From 8dd59fba5ea57c1533014e143ba8a3c65997eb34 Mon Sep 17 00:00:00 2001 From: Pau Espin Pedrol Date: Wed, 29 Apr 2020 15:08:16 +0200 Subject: [PATCH] pcu: Rename PCU*RAW* content to PCU Basically what's done here: * mv PCU_Tests_RAW${suffix}.ttcn -> PCU_Tests${suffix}.ttcn * mv PCUIF_RAW_Components.ttcn -> PCUIF_Components.ttcn * Change module names according to file names and fix all references in code and configuration. Change-Id: Iacaddb56e41012ba58ef6d1b9e79d2c012259bed --- ..._Components.ttcn => PCUIF_Components.ttcn} | 2 +- pcu/PCU_Tests.cfg | 4 +- pcu/PCU_Tests.ttcn | 1904 ++++++++++++++++ ...CU_Tests_RAW_NS.ttcn => PCU_Tests_NS.ttcn} | 4 +- pcu/PCU_Tests_RAW.ttcn | 1906 ----------------- pcu/PCU_Tests_SNS.cfg | 2 +- ..._Tests_RAW_SNS.ttcn => PCU_Tests_SNS.ttcn} | 4 +- pcu/README.md | 2 +- 8 files changed, 1913 insertions(+), 1915 deletions(-) rename pcu/{PCUIF_RAW_Components.ttcn => PCUIF_Components.ttcn} (99%) rename pcu/{PCU_Tests_RAW_NS.ttcn => PCU_Tests_NS.ttcn} (99%) delete mode 100644 pcu/PCU_Tests_RAW.ttcn rename pcu/{PCU_Tests_RAW_SNS.ttcn => PCU_Tests_SNS.ttcn} (99%) diff --git a/pcu/PCUIF_RAW_Components.ttcn b/pcu/PCUIF_Components.ttcn similarity index 99% rename from pcu/PCUIF_RAW_Components.ttcn rename to pcu/PCUIF_Components.ttcn index 4ed57e572..c0266fb8b 100644 --- a/pcu/PCUIF_RAW_Components.ttcn +++ b/pcu/PCUIF_Components.ttcn @@ -1,4 +1,4 @@ -module PCUIF_RAW_Components { +module PCUIF_Components { /* * Components for (RAW) PCU test cases. diff --git a/pcu/PCU_Tests.cfg b/pcu/PCU_Tests.cfg index 692ebbd91..db6f56ebc 100644 --- a/pcu/PCU_Tests.cfg +++ b/pcu/PCU_Tests.cfg @@ -21,5 +21,5 @@ SGSN_Components.mp_nsconfig := { [MAIN_CONTROLLER] [EXECUTE] -PCU_Tests_RAW.control -PCU_Tests_RAW_NS.control +PCU_Tests.control +PCU_Tests_NS.control diff --git a/pcu/PCU_Tests.ttcn b/pcu/PCU_Tests.ttcn index 43a617821..24c198ec9 100644 --- a/pcu/PCU_Tests.ttcn +++ b/pcu/PCU_Tests.ttcn @@ -1,2 +1,1906 @@ module PCU_Tests { + +/* "RAW" PCU tests: Talk directly to the PCU socket of OsmoPCU on the one hand side (emulating + the BTS/BSC side PCU socket server) and the Gb interface on the other hand side. No NS/BSSGP + Emulation is used; rather, we simply use the NS_CodecPort to implement both standard and non- + standard procedures on the NS and BSSGP level. The goal of these tests is to test exactly + those NS and BSSGP implementations on the BSS (PCU) side. */ + +/* (C) 2018-2019 Harald Welte + * (C) 2019 Vadim Yanitskiy + * All rights reserved. + * + * Released under the terms of GNU General Public License, Version 2 or + * (at your option) any later version. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +friend module PCU_Tests_NS; + +import from General_Types all; +import from Osmocom_Types all; +import from GSM_Types all; +import from GSM_RR_Types all; + +import from Osmocom_VTY_Functions all; +import from TELNETasp_PortType all; + +import from MobileL3_GMM_SM_Types all; +import from RLCMAC_CSN1_Types all; +import from RLCMAC_Types all; + +import from MobileL3_CommonIE_Types all; +import from L3_Templates all; + +import from NS_Types all; +import from BSSGP_Types all; +import from Osmocom_Gb_Types all; + +import from BSSGP_Emulation all; /* BssgpConfig */ +import from NS_Emulation all; /* NSConfiguration */ + +import from UD_Types all; +import from PCUIF_Types all; +import from PCUIF_CodecPort all; +import from PCUIF_Components all; +import from IPL4asp_Types all; +import from Native_Functions all; +import from SGSN_Components all; + +modulepar { + charstring mp_pcu_sock_path := PCU_SOCK_DEFAULT; + + float X2002 := 0.2; /* Timer -2002, IMM ASSIGN confirm delay */ +} + + +/* FIXME: make sure to use parameters from mp_gb_cfg.cell_id in the PCU INFO IND */ +private template (value) PCUIF_info_ind ts_PCUIF_INFO_default := { + version := PCU_IF_VERSION, + flags := c_PCUIF_Flags_default, + trx := valueof(ts_PCUIF_InfoTrxs_def), + bsic := 7, + mcc := 262, + mnc := 42, + mnc_3_digits := 0, + lac := 13135, + rac := 0, + nsei := mp_nsconfig.nsei, + nse_timer := { 3, 3, 3, 3, 30, 3, 10 }, + cell_timer := { 3, 3, 3, 3, 3, 10, 3, 10, 3, 10, 3 }, + cell_id := 20960, + repeat_time := 5 * 50, + repeat_count := 3, + bvci := mp_gb_cfg.bvci, + t3142 := 20, + t3169 := 5, + t3191 := 5, + t3193_10ms := 160, + t3195 := 5, + t3101 := 10, + t3103 := 4, + t3105 := 8, + cv_countdown := 15, + dl_tbf_ext := 250 * 10, /* ms */ + ul_tbf_ext := 250 * 10, /* ms */ + initial_cs := 2, + initial_mcs := 6, + nsvci := { mp_nsconfig.nsvci, 0 }, + local_pprt := { mp_nsconfig.remote_udp_port, 0 }, + remote_port := { mp_nsconfig.local_udp_port, 0 }, + remote_ip := { f_inet_haddr(mp_nsconfig.local_ip) , '00000000'O } +} + +type record lqual_range { + /* component reference to the IPA_Client component used for RSL */ + uint8_t low, + uint8_t high +} + +type component RAW_PCU_Test_CT extends bssgp_CT { + /* Connection to the BTS component (one for now) */ + port RAW_PCU_MSG_PT BTS; + /* Connection to the PCUIF component */ + port RAW_PCU_MSG_PT PCUIF; + /* VTY connection to the PCU */ + port TELNETasp_PT PCUVTY; + + /* Uplink CS/MCS thresholds, default from pcu_main.c: */ + var lqual_range g_cs_lqual_ranges[4] := {{low := 0, high := 6}, + {low := 5, high := 8}, + {low := 7, high := 13}, + {low := 12,high := 35}}; + var lqual_range g_mcs_lqual_ranges[9] := {{low := 0, high := 6}, + {low := 5, high := 8}, + {low := 7, high := 13}, + {low := 12,high := 15}, + {low := 14, high := 17}, + {low := 16, high := 18}, + {low := 17,high := 20}, + {low := 19, high := 24}, + {low := 23,high := 35}}; + var uint8_t g_cs_initial_dl := 1; + var uint8_t g_cs_initial_ul := 1; + var uint8_t g_mcs_initial_dl := 1; + var uint8_t g_mcs_initial_ul := 1; + var uint8_t g_cs_max_dl := 4; + var uint8_t g_cs_max_ul := 4; + var uint8_t g_mcs_max_dl := 9; + var uint8_t g_mcs_max_ul := 9; + + var boolean g_egprs_only := false; + + /* Guard timeout */ + timer g_T_guard := 60.0; +}; + +private altstep as_Tguard_RAW() runs on RAW_PCU_Test_CT { + [] g_T_guard.timeout { + setverdict(fail, "Timeout of T_guard"); + mtc.stop; + } +} + +private function f_pcuvty_set_allowed_cs_mcs() runs on RAW_PCU_Test_CT { + f_vty_config2(PCUVTY, {"pcu"}, "cs " & int2str(g_cs_initial_dl) & " " & int2str(g_cs_initial_ul)); + f_vty_config2(PCUVTY, {"pcu"}, "cs max " & int2str(g_cs_max_dl) & " " & int2str(g_cs_max_ul)); + + f_vty_config2(PCUVTY, {"pcu"}, "mcs " & int2str(g_mcs_initial_dl) & " " & int2str(g_mcs_initial_ul)); + f_vty_config2(PCUVTY, {"pcu"}, "mcs max " & int2str(g_mcs_max_dl) & " " & int2str(g_mcs_max_ul)); +} + +private function f_pcuvty_set_link_quality_ranges() runs on RAW_PCU_Test_CT { + var charstring cmd; + + cmd := "cs link-quality-ranges" & + " cs1 " & int2str(g_cs_lqual_ranges[0].high) & + " cs2 " & int2str(g_cs_lqual_ranges[1].low) & " " & int2str(g_cs_lqual_ranges[1].high) & + " cs3 " & int2str(g_cs_lqual_ranges[2].low) & " " & int2str(g_cs_lqual_ranges[2].high) & + " cs4 " & int2str(g_cs_lqual_ranges[3].low); + f_vty_config2(PCUVTY, {"pcu"}, cmd); + + cmd := "mcs link-quality-ranges" & + " mcs1 " & int2str(g_mcs_lqual_ranges[0].high) & + " mcs2 " & int2str(g_mcs_lqual_ranges[1].low) & " " & int2str(g_mcs_lqual_ranges[1].high) & + " mcs3 " & int2str(g_mcs_lqual_ranges[2].low) & " " & int2str(g_mcs_lqual_ranges[2].high) & + " mcs4 " & int2str(g_mcs_lqual_ranges[3].low) & " " & int2str(g_mcs_lqual_ranges[3].high) & + " mcs5 " & int2str(g_mcs_lqual_ranges[4].low) & " " & int2str(g_mcs_lqual_ranges[4].high) & + " mcs6 " & int2str(g_mcs_lqual_ranges[5].low) & " " & int2str(g_mcs_lqual_ranges[5].high) & + " mcs7 " & int2str(g_mcs_lqual_ranges[6].low) & " " & int2str(g_mcs_lqual_ranges[6].high) & + " mcs8 " & int2str(g_mcs_lqual_ranges[7].low) & " " & int2str(g_mcs_lqual_ranges[7].high) & + " mcs9 " & int2str(g_mcs_lqual_ranges[8].low); + f_vty_config2(PCUVTY, {"pcu"}, cmd); +} + +private function f_init_vty(charstring id) runs on RAW_PCU_Test_CT { + map(self:PCUVTY, system:PCUVTY); + f_vty_set_prompts(PCUVTY); + f_vty_transceive(PCUVTY, "enable"); + + if (g_egprs_only) { + f_vty_config2(PCUVTY, {"pcu"}, "egprs only"); + } else { + f_vty_config2(PCUVTY, {"pcu"}, "no egprs"); + } +} + +private function f_init_raw(charstring id, template (value) PCUIF_info_ind info_ind := ts_PCUIF_INFO_default) +runs on RAW_PCU_Test_CT { + var RAW_PCUIF_CT vc_PCUIF; + var RAW_PCU_BTS_CT vc_BTS; + + /* Start the guard timer */ + g_T_guard.start; + activate(as_Tguard_RAW()); + + /* Init PCU interface component */ + vc_PCUIF := RAW_PCUIF_CT.create("PCUIF-" & id); + connect(vc_PCUIF:MTC, self:PCUIF); + map(vc_PCUIF:PCU, system:PCU); + + /* Create one BTS component (we may want more some day) */ + vc_BTS := RAW_PCU_BTS_CT.create("BTS-" & id); + connect(vc_BTS:PCUIF, vc_PCUIF:BTS); + connect(vc_BTS:TC, self:BTS); + + f_init_vty(id); + + vc_PCUIF.start(f_PCUIF_CT_handler(mp_pcu_sock_path)); + vc_BTS.start(f_BTS_CT_handler(0, valueof(info_ind))); + + /* Wait until the BTS is ready (SI13 negotiated) */ + BTS.receive(tr_RAW_PCU_EV(BTS_EV_SI13_NEGO)); +} + +template AckNackDescription t_AckNackDescription_init := { + final_ack := '0'B, + starting_seq_nr := 0, + receive_block_bitmap := '0000000000000000000000000000000000000000000000000000000000000000'B +} + +private function f_rlcmac_dl_block_get_tfi(RlcmacDlBlock dl_block) return uint5_t { + if (ischosen(dl_block.data)) { + return dl_block.data.mac_hdr.hdr_ext.tfi; + } else { + return dl_block.data_egprs.mac_hdr.tfi; + } +} + +/* TS 44.060 sec 12.3 Ack/Nack Description */ +private function f_acknackdesc_ack_block(inout AckNackDescription desc, RlcmacDlBlock dl_block, BIT1 final_ack := '0'B) +{ + var uint7_t bsn; + var integer i; + var integer inc; + + if (ischosen(dl_block.data)) { + bsn := dl_block.data.mac_hdr.hdr_ext.bsn; + } else { + bsn := dl_block.data_egprs.mac_hdr.bsn1; + } + + inc := bsn - desc.starting_seq_nr + 1; + /* Filling hole? */ + if (bsn < desc.starting_seq_nr) { + desc.receive_block_bitmap[lengthof(desc.receive_block_bitmap) - (desc.starting_seq_nr - bsn)] := int2bit(1, 1); + return; + } + + /* SSN is increased, and so RBB values need to be moved */ + for (i := 0; i < lengthof(desc.receive_block_bitmap) - inc; i := i+1) { + desc.receive_block_bitmap[i] := desc.receive_block_bitmap[i + inc]; + } + for (i := lengthof(desc.receive_block_bitmap) - inc; i < lengthof(desc.receive_block_bitmap) - 1; i := i+1) { + desc.receive_block_bitmap[i] := int2bit(0, 1); + } + /* Now we can set current bit and update SSN */ + desc.starting_seq_nr := bsn + 1; + desc.receive_block_bitmap[lengthof(desc.receive_block_bitmap) - 1] := int2bit(1, 1); + + /* Finally update the final_ack bit as requested: */ + desc.final_ack := final_ack; +} + +/* This function can be used to send DATA.cnf in response to the IUT originated DATA.req. + * NOTE: it's the responsibility of caller to make sure that pcu_msg contains u.data_req. */ +private function f_pcuif_tx_data_cnf(in PCUIF_Message pcu_msg) +runs on RAW_PCU_Test_CT { + var PCUIF_Message pcu_msg_cnf := { + msg_type := PCU_IF_MSG_DATA_CNF, + bts_nr := pcu_msg.bts_nr, + spare := pcu_msg.spare, + u := { data_cnf := pcu_msg.u.data_req } + }; + + /* PCU wants DATA.cnf containing basically everything that was in DATA.req, + * but PCU_IF_SAPI_PCH is a special case - paging group shall be excluded. */ + if (pcu_msg.u.data_req.sapi == PCU_IF_SAPI_PCH) { + pcu_msg_cnf.u.data_cnf.data := substr(pcu_msg.u.data_req.data, 3, + pcu_msg.u.data_req.len - 3); + } + + BTS.send(pcu_msg_cnf); +} + +private function f_pcuif_rx_imm_ass(out GsmRrMessage rr_imm_ass, + template PCUIF_Sapi sapi := PCU_IF_SAPI_AGCH, + template GsmRrMessage t_imm_ass := ?, + uint8_t bts_nr := 0) +runs on RAW_PCU_Test_CT return boolean { + var PCUIF_Message pcu_msg; + var octetstring data; + timer T; + + T.start(2.0); + alt { + [] BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := bts_nr, trx_nr := 0, ts_nr := 0, + sapi := sapi, data := ?)) -> value pcu_msg { + /* On PCH the payload is prefixed with paging group (3 octets): skip it. + * TODO: add an additional template parameter, so we can match it. */ + if (pcu_msg.u.data_req.sapi == PCU_IF_SAPI_PCH) { + data := substr(pcu_msg.u.data_req.data, 3, pcu_msg.u.data_req.len - 3); + } else { + data := pcu_msg.u.data_req.data; + } + + rr_imm_ass := dec_GsmRrMessage(data); + if (not match(rr_imm_ass, t_imm_ass)) { + /* Not for us? Wait for more. */ + repeat; + } + + log("Rx Immediate Assignment: ", rr_imm_ass); + setverdict(pass); + return true; + } + [] BTS.receive { repeat; } + [] T.timeout { + setverdict(fail, "Timeout waiting for Immediate Assignment"); + } + } + + return false; +} + +/* FIXME: properly encode RA (see TS 24.060, table 11.2.5.2) */ +private function f_establish_tbf(out GsmRrMessage rr_imm_ass, uint8_t bts_nr := 0, + uint16_t ra := oct2int('3A'O), uint8_t is_11bit := 0, + PCUIF_BurstType burst_type := BURST_TYPE_0, + TimingAdvance ta := 0) +runs on RAW_PCU_Test_CT return boolean { + var uint32_t fn; + + /* FIXME: ask the BTS component to give us the current TDMA fn */ + fn := 1337 + ta; + + /* Send RACH.ind */ + log("Sending RACH.ind on fn=", fn, " with RA=", ra, ", TA=", ta); + BTS.send(ts_PCUIF_RACH_IND(bts_nr := bts_nr, trx_nr := 0, ts_nr := 0, + ra := ra, is_11bit := is_11bit, + burst_type := burst_type, + fn := fn, arfcn := 871, + qta := ta * 4)); + + /* 3GPP TS 44.018, table 9.1.8.1, note 2b: Request Reference shall be set to 127 + * when Immediate Assignment is triggered by EGPRS Packet Channel Request. Here + * we assume that 11 bit RA always contains EGPRS Packet Channel Request. */ + if (is_11bit != 0) { ra := 127; } + + /* Expect Immediate (TBF) Assignment on TS0/AGCH */ + return f_pcuif_rx_imm_ass(rr_imm_ass, PCU_IF_SAPI_AGCH, + tr_IMM_TBF_ASS(?, ra, fn), + bts_nr := bts_nr); +} + +private function f_imm_ass_verify_ul_tbf_ass(GsmRrMessage rr_imm_ass, out PacketUlAssign ul_tbf_ass) +runs on RAW_PCU_Test_CT return boolean { + + /* Make sure we received an UL TBF Assignment */ + if (match(rr_imm_ass, tr_IMM_TBF_ASS(dl := false, rest := tr_IaRestOctets_ULAss(?)))) { + ul_tbf_ass := rr_imm_ass.payload.imm_ass.rest_octets.hh.pa.uldl.ass.ul; + log("Rx Uplink TBF assignment: ", ul_tbf_ass); + setverdict(pass); + } else { + setverdict(fail, "Failed to match UL TBF Assignment"); + return false; + } + + /* Make sure we have got a TBF with Dynamic Block Allocation */ + if (ul_tbf_ass.dynamic == omit) { + setverdict(fail, "Single Block Allocation is not handled by ", testcasename()); + return false; + } + + return true; +} + +private function f_imm_ass_verify_dl_tbf_ass(GsmRrMessage rr_imm_ass, out PacketDlAssign dl_tbf_ass) +runs on RAW_PCU_Test_CT return boolean { + + /* Make sure we received a DL TBF Assignment */ + if (match(rr_imm_ass, tr_IMM_TBF_ASS(dl := true, rest := tr_IaRestOctets_DLAss(?)))) { + dl_tbf_ass := rr_imm_ass.payload.imm_ass.rest_octets.hh.pa.uldl.ass.dl; + log("Rx Downlink TBF assignment: ", dl_tbf_ass); + setverdict(pass); + } else { + setverdict(fail, "Failed to match DL TBF Assignment"); + return false; + } + + return true; +} + +/* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ +private function f_pcuif_tx_data_ind(octetstring data, int16_t lqual_cb := 0, uint32_t fn := 0) +runs on RAW_PCU_Test_CT { + var template RAW_PCU_EventParam ev_param := {tdma_fn := ? }; + BTS.send(ts_PCUIF_DATA_IND(bts_nr := 0, trx_nr := 0, ts_nr := 7, block_nr := 0, + sapi := PCU_IF_SAPI_PDTCH, data := data, + fn := fn, arfcn := 871, lqual_cb := lqual_cb)); + if (fn != 0) { + ev_param := {tdma_fn := fn }; + } + BTS.receive(tr_RAW_PCU_EV(TDMA_EV_PDTCH_BLOCK_SENT, ev_param)); +} + +/* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ +private function f_pcuif_rx_data_req(out PCUIF_Message pcu_msg) +runs on RAW_PCU_Test_CT { + BTS.send(ts_PCUIF_RTS_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, + sapi := PCU_IF_SAPI_PDTCH, fn := 0, + arfcn := 871, block_nr := 0)); + BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, + sapi := PCU_IF_SAPI_PDTCH)) -> value pcu_msg; +} + +/* Expect an Immediate Assignment (paging) from PCU on PCUIF on specified sapi. */ +private function f_pcuif_rx_pch_imm_tbf_ass(out GsmRrMessage rr_imm_ass) +runs on RAW_PCU_Test_CT { + var PCUIF_Message pcu_msg; + var octetstring macblock; + BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 0, + sapi := PCU_IF_SAPI_PCH)) -> value pcu_msg; + /* First 3 bytes contain paging group: */ + macblock := substr(pcu_msg.u.data_req.data, 3, pcu_msg.u.data_req.len - 3); + rr_imm_ass := dec_GsmRrMessage(macblock); + if (not match(rr_imm_ass, tr_IMM_TBF_ASS())) { + setverdict(fail, "Failed to match Immediate Assignment: ", rr_imm_ass); + mtc.stop; + } + f_pcuif_tx_data_cnf(pcu_msg); +} + +/* Expect a Paging Request Type 1 from PCU on PCUIF on specified sapi. */ +private function f_pcuif_rx_pch_pag_req1(template MobileIdentityV mi1 := ?, + template integer pag_group := ?) +runs on RAW_PCU_Test_CT return GsmRrMessage { + var GsmRrMessage rr_pag_req1; + var PCUIF_Message pcu_msg; + var octetstring imsi_suff_octstr; + var integer pag_group_rx; + var octetstring macblock; + + BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 0, + sapi := PCU_IF_SAPI_PCH)) -> value pcu_msg; + + /* First 3 bytes contain IMSI suffix to calculate paging group: */ + imsi_suff_octstr := substr(pcu_msg.u.data_req.data, 0, 3); + pag_group_rx := str2int(oct2char(imsi_suff_octstr[0])) * 100 + + str2int(oct2char(imsi_suff_octstr[1])) * 10 + + str2int(oct2char(imsi_suff_octstr[2])); + + /* Make sure we've got RR Paging Request Type 1 for a given MI */ + macblock := substr(pcu_msg.u.data_req.data, 3, pcu_msg.u.data_req.len - 3); + rr_pag_req1 := dec_GsmRrMessage(macblock); + if (not match(rr_pag_req1, tr_PAG_REQ1(tr_MI_LV(mi1)))) { + setverdict(fail, "Failed to match Paging Request Type 1: ", rr_pag_req1); + mtc.stop; + } + + /* Make sure that received paging froup matches the expected one */ + if (not match(pag_group_rx, pag_group)) { + setverdict(fail, "Paging group", pag_group_rx, " does not match expected ", pag_group); + mtc.stop; + } + + f_pcuif_tx_data_cnf(pcu_msg); + return rr_pag_req1; +} + +private function f_tx_rlcmac_ul_block(template (value) RlcmacUlBlock ul_data, int16_t lqual_cb := 0, uint32_t fn := 0) +runs on RAW_PCU_Test_CT { + var octetstring data; + /* Encode the payload of DATA.ind */ + data := enc_RlcmacUlBlock(valueof(ul_data)); + data := f_pad_oct(data, 23, '00'O); /* CS-1 */ + + /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ + f_pcuif_tx_data_ind(data, lqual_cb, fn); +} + +private function f_tx_rlcmac_ul_n_blocks(PacketUlAssign ul_tbf_ass, integer num_blocks := 1) +runs on RAW_PCU_Test_CT { + var template (value) RlcmacUlBlock ul_data := t_RLCMAC_UL_DATA( + tfi := ul_tbf_ass.dynamic.tfi_assignment, + cv := num_blocks - 1, /* num UL blocks to be sent (to be overridden in loop) */ + bsn := 0, /* TODO: what should be here? */ + blocks := { /* To be generated in loop */ }); + + /* HACK: patch missing TLLI; otherwise OsmoPCU rejects DATA.req */ + ul_data.data.tlli := '00000001'O; + + for (var integer i := 0; i < num_blocks; i := i + 1) { + /* Prepare a new UL block (CV, random payload) */ + ul_data.data.mac_hdr.countdown := (num_blocks - i - 1); + ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; + f_tx_rlcmac_ul_block(ul_data); + } +} + +private function f_rx_rlcmac_dl_block(out RlcmacDlBlock dl_block, out uint32_t dl_fn, template (present) CodingScheme exp_cs_mcs := ?) +runs on RAW_PCU_Test_CT { + var PCUIF_Message pcu_msg; + f_pcuif_rx_data_req(pcu_msg); + dl_block := dec_RlcmacDlBlock(pcu_msg.u.data_req.data); + dl_fn := pcu_msg.u.data_req.fn; + + var integer len := lengthof(pcu_msg.u.data_req.data); + var CodingScheme cs_mcs := f_rlcmac_block_len2cs_mcs(len) + if (not match(f_rlcmac_block_len2cs_mcs(len), exp_cs_mcs)) { + setverdict(fail, "Failed to match Coding Scheme exp ", exp_cs_mcs, " vs ", cs_mcs, " (", len, ")"); + mtc.stop; + } +} + +private function f_rx_rlcmac_dl_block_exp_ack_nack(out RlcmacDlBlock dl_block, out uint32_t poll_fn) +runs on RAW_PCU_Test_CT { + var uint32_t dl_fn; + + f_rx_rlcmac_dl_block(dl_block, dl_fn); + if (not match(dl_block, tr_RLCMAC_UL_ACK_NACK(ul_tfi := ?, tlli := ?))) { + setverdict(fail, "Failed to match Packet Uplink ACK / NACK"); + mtc.stop; + } + + poll_fn := dl_fn + f_rrbp_fn_delay(dl_block.ctrl.mac_hdr.rrbp); +} + +private function f_rx_rlcmac_dl_block_exp_dummy(out RlcmacDlBlock dl_block) +runs on RAW_PCU_Test_CT { + var uint32_t dl_fn; + + f_rx_rlcmac_dl_block(dl_block, dl_fn); + if (not match(dl_block, tr_RLCMAC_DUMMY_CTRL())) { + setverdict(fail, "Failed to match Packet DUMMY DL"); + mtc.stop; + } +} + +private function f_rx_rlcmac_dl_block_exp_pkt_ass(out RlcmacDlBlock dl_block, out uint32_t poll_fn) +runs on RAW_PCU_Test_CT { + var uint32_t dl_fn; + + f_rx_rlcmac_dl_block(dl_block, dl_fn); + if (not match(dl_block, tr_RLCMAC_DL_PACKET_ASS())) { + setverdict(fail, "Failed to match Packet Downlink Assignment"); + mtc.stop; + } + + poll_fn := dl_fn + f_rrbp_fn_delay(dl_block.ctrl.mac_hdr.rrbp); +} + +private function f_rx_rlcmac_dl_block_exp_pkt_ul_ass(out RlcmacDlBlock dl_block, out uint32_t poll_fn) +runs on RAW_PCU_Test_CT { + var uint32_t dl_fn; + + f_rx_rlcmac_dl_block(dl_block, dl_fn); + if (not match(dl_block, tr_RLCMAC_UL_PACKET_ASS())) { + setverdict(fail, "Failed to match Packet Uplink Assignment"); + mtc.stop; + } + + poll_fn := dl_fn + f_rrbp_fn_delay(dl_block.ctrl.mac_hdr.rrbp); +} + + +private function f_rx_rlcmac_dl_block_exp_pkt_pag_req(out RlcmacDlBlock dl_block) +runs on RAW_PCU_Test_CT { + var uint32_t dl_fn; + + f_rx_rlcmac_dl_block(dl_block, dl_fn); + if (not match(dl_block, tr_RLCMAC_PACKET_PAG_REQ())) { + setverdict(fail, "Failed to match Packet Paging Request: ", dl_block, " vs ", tr_RLCMAC_PACKET_PAG_REQ()); + mtc.stop; + } +} + +private function f_rlcmac_dl_block_verify_data_gprs(RlcmacDlBlock dl_block, uint32_t dl_fn, out uint32_t ack_fn, octetstring data, template (present) uint7_t exp_bsn := ?, template (present) CodingScheme exp_cs := ?) +{ + log("verifying dl data block (gprs): ", dl_block); + + ack_fn := dl_fn + f_rrbp_fn_delay(dl_block.data.mac_hdr.mac_hdr.rrbp); + + if (not match(dl_block.data.mac_hdr.hdr_ext.bsn, exp_bsn)) { + setverdict(fail, "DL block BSN doesn't match: ", + dl_block.data.blocks[0].hdr.length_ind, " vs exp ", exp_bsn); + } + + if (lengthof(dl_block.data.blocks) < 1) { + setverdict(fail, "DL block has no LLC payload: ", dl_block); + mtc.stop; + } + + if (ispresent(dl_block.data.blocks[0].hdr) and dl_block.data.blocks[0].hdr.length_ind != lengthof(data)) { + setverdict(fail, "DL block has LLC header with wrong expected size: ", + dl_block.data.blocks[0].hdr.length_ind, " vs ", lengthof(data)); + mtc.stop; + } + + if (dl_block.data.blocks[0].payload != data) { + setverdict(fail, "Failed to match content of LLC payload in DL Block: ", dl_block, " vs ", data); + mtc.stop; + } + + /* Check next data blocks contain dummy frames */ + if (lengthof(dl_block.data.blocks) > 1 and substr(dl_block.data.blocks[1].payload, 0, 3) != '43C001'O) { + setverdict(fail, "Second data payload is not a dummy frame: ", dl_block.data.blocks[1].payload); + mtc.stop; + } + + /* TODO: check exp_cs */ +} + +private function f_rlcmac_dl_block_verify_data_egprs(RlcmacDlBlock dl_block, uint32_t dl_fn, out uint32_t ack_fn, octetstring data, template (present) uint14_t exp_bsn := ?, template (present) CodingScheme exp_cs := ?) +{ + log("verifying dl data block (egprs): ", dl_block); + + ack_fn := dl_fn + f_rrbp_fn_delay(dl_block.data_egprs.mac_hdr.rrbp); + + if (not match(dl_block.data_egprs.mac_hdr.bsn1, exp_bsn)) { + setverdict(fail, "DL block BSN doesn't match: ", + dl_block.data_egprs.blocks[0].hdr.length_ind, " vs exp ", exp_bsn); + } + + if (lengthof(dl_block.data_egprs.blocks) < 1) { + setverdict(fail, "DL block has no LLC payload: ", dl_block); + mtc.stop; + } + + if (ispresent(dl_block.data_egprs.blocks[0].hdr) and dl_block.data_egprs.blocks[0].hdr.length_ind != lengthof(data)) { + setverdict(fail, "DL block has LLC header with wrong expected size: ", + dl_block.data_egprs.blocks[0].hdr.length_ind, " vs ", lengthof(data)); + mtc.stop; + } + + if (dl_block.data_egprs.blocks[0].payload != data) { + setverdict(fail, "Failed to match content of LLC payload in DL Block: ", dl_block, " vs ", data); + mtc.stop; + } + + /* Check next data blocks contain dummy frames */ + if (lengthof(dl_block.data_egprs.blocks) > 1 and substr(dl_block.data_egprs.blocks[1].payload, 0, 3) != '43C001'O) { + setverdict(fail, "Second data payload is not a dummy frame: ", dl_block.data.blocks[1].payload); + mtc.stop; + } + + /* TODO: Check exp_cs. In the case of EGPRS, first check mac_hdr.header_type and then decode CPS = exp_cs based on mac_hdr.header_type. + See wireshark's egprs_Header_type1_coding_puncturing_scheme_to_mcs. */ +} + +private function f_rx_rlcmac_dl_block_exp_data(out RlcmacDlBlock dl_block, out uint32_t ack_fn, octetstring data, template (present) uint7_t exp_bsn := ?, template (present) CodingScheme exp_cs := ?) +runs on RAW_PCU_Test_CT { + var PCUIF_Message pcu_msg; + var uint32_t dl_fn; + var boolean is_egprs := false; + var template RlcmacDlBlock dl_template := tr_RLCMAC_DATA_RRBP; + dl_template.data.blocks := ?; + + f_rx_rlcmac_dl_block(dl_block, dl_fn); + if (not match(dl_block, dl_template)) { + dl_template := tr_RLCMAC_DATA_EGPRS; + dl_template.data_egprs.blocks := ?; + if (not match(dl_block, dl_template)) { + setverdict(fail, "Failed to match Packet data: ", dl_block, " vs ", dl_template); + mtc.stop; + } + is_egprs := true; + } + + if (is_egprs) { + f_rlcmac_dl_block_verify_data_egprs(dl_block, dl_fn, ack_fn, data, exp_bsn, exp_cs); + } else { + f_rlcmac_dl_block_verify_data_gprs(dl_block, dl_fn, ack_fn, data, exp_bsn, exp_cs); + } +} + +testcase TC_pcuif_suspend() runs on RAW_PCU_Test_CT { + var octetstring ra_id := enc_RoutingAreaIdentification(mp_gb_cfg.cell_id.ra_id); + var GprsTlli tlli := 'FFFFFFFF'O; + timer T; + + /* Initialize NS/BSSGP side */ + f_init_bssgp(); + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Establish BSSGP connection to the PCU */ + f_bssgp_establish(); + + BTS.send(ts_PCUIF_SUSP_REQ(0, tlli, ra_id, 0)); + + T.start(2.0); + alt { + [] BSSGP_SIG[0].receive(tr_BSSGP_SUSPEND(tlli, mp_gb_cfg.cell_id.ra_id)) { + setverdict(pass); + } + [] T.timeout { + setverdict(fail, "Timeout waiting for BSSGP SUSPEND"); + } + } +} + +/* Test of correct Timing Advance at the time of TBF establishment + * (derived from timing offset of the Access Burst). */ +testcase TC_ta_rach_imm_ass() runs on RAW_PCU_Test_CT { + var GsmRrMessage rr_msg; + var boolean ok; + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* We cannot send too many TBF requests in a short time because + * at some point the PCU will fail to allocate a new TBF. */ + for (var TimingAdvance ta := 0; ta < 64; ta := ta + 16) { + /* Establish an Uplink TBF (send RACH.ind with current TA) */ + ok := f_establish_tbf(rr_msg, bts_nr := 0, ta := ta); + if (not ok) { + setverdict(fail, "Failed to establish an Uplink TBF"); + mtc.stop; + } + + /* Make sure Timing Advance IE matches out expectations */ + if (match(rr_msg, tr_IMM_TBF_ASS(dl := false, ta := ta))) { + setverdict(pass); + } + } +} + +/* Verify Timing Advance value(s) indicated during the packet Downlink assignment + * procedure as per 3GPP TS 44.018, section 3.5.3. There seems to be a bug in the + * IUT that causes it to send an unreasonable Timing Advance value > 0 despite + * no active TBF exists at the moment of establishment (idle mode). */ +testcase TC_ta_idle_dl_tbf_ass() runs on RAW_PCU_Test_CT { + var OCT4 tlli := f_rnd_octstring(4); + var GsmRrMessage rr_imm_ass; + + /* Initialize NS/BSSGP side */ + f_init_bssgp(); + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Establish BSSGP connection to the PCU */ + f_bssgp_establish(); + f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); + + /* SGSN sends some DL data, PCU will initiate Packet Downlink + * Assignment on CCCH (PCH). We don't care about the payload. */ + BSSGP[0].send(ts_BSSGP_DL_UD(tlli, f_rnd_octstring(10))); + f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); // TODO: match by TLLI! + + /* Make sure that Timing Advance is 0 (the actual value is not known yet). + * As per 3GPP S 44.018, section 3.5.3.1.2, the network *shall* initiate + * the procedures defined in 3GPP TS 44.060 or use the polling mechanism. */ + if (not match(rr_imm_ass, tr_IMM_TBF_ASS(ta := 0))) { + setverdict(fail, "Timing Advance value doesn't match"); + mtc.stop; + } +} + +/* Verify that the PCU generates valid PTCCH/D messages + * while neither Uplink nor Downlink TBF is established. */ +testcase TC_ta_ptcch_idle() runs on RAW_PCU_Test_CT { + var PTCCHDownlinkMsg ptcch_msg; + var PCUIF_Message pcu_msg; + timer T; + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Sent an RTS.req for PTCCH/D */ + BTS.send(ts_PCUIF_RTS_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, + sapi := PCU_IF_SAPI_PTCCH, fn := 0, + arfcn := 871, block_nr := 0)); + T.start(5.0); + alt { + [] BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, + sapi := PCU_IF_SAPI_PTCCH)) -> value pcu_msg { + log("Rx DATA.req message: ", pcu_msg); + setverdict(pass); + } + [] BTS.receive(PCUIF_Message:?) { repeat; } + [] T.timeout { + setverdict(fail, "Timeout waiting for a PTCCH/D block"); + mtc.stop; + } + } + + ptcch_msg := dec_PTCCHDownlinkMsg(pcu_msg.u.data_req.data); + log("Decoded PTCCH/D message: ", ptcch_msg); + + /* Make sure the message is encoded correctly + * TODO: do we expect all TA values to be equal '1111111'B? */ + if (not match(ptcch_msg, tr_PTCCHDownlinkMsg)) { + setverdict(fail, "Malformed PTCCH/D message"); + mtc.stop; + } +} + +/* Test of correct Timing Advance during an active Uplink TBF. + * + * Unlike the circuit-switched domain, Uplink transmissions on PDCH time-slots + * are not continuous and there can be long time gaps between them. This happens + * due to a bursty nature of packet data. The actual Timing Advance of a MS may + * significantly change between such rare Uplink transmissions, so GPRS introduces + * additional mechanisms to control Timing Advance, and thus reduce interference + * between neighboring TDMA time-slots. + * + * At the moment of Uplink TBF establishment, initial Timing Advance is measured + * from ToA (Timing of Arrival) of an Access Burst. This is covered by another + * test case - TC_ta_rach_imm_ass. In response to that Access Burst the network + * sends Immediate Assignment on AGCH, which _may_ contain Timing Advance Index + * among with the initial Timing Advance value. And here PTCCH comes to play. + * + * PTCCH is a unidirectional channel on which the network can instruct a sub-set + * of 16 MS (whether TBFs are active or not) to adjust their Timing Advance + * continuously. To ensure continuous measurements of the signal propagation + * delay, the MSs shall transmit Access Bursts on Uplink (PTCCH/U) on sub-slots + * defined by an assigned Timing Advance Index (see 3GPP TS 45.002). + * + * The purpose of this test case is to verify the assignment of Timing Advance + * Index, and the process of Timing Advance notification on PTCCH/D. The MTC + * first establishes several Uplink TBFs, but does not transmit any Uplink + * blocks on them. During 4 TDMA multi-frame periods the MTC is sending RACH + * indications to the PCU, checking the correctness of two received PTCCH/D + * messages (period of PTCCH/D is two multi-frames). + */ + +/* List of ToA values for Access Bursts to be sent on PTCCH/U, + * each ToA (Timing of Arrival) value is in units of 1/4 of + * a symbol (i.e. 1 symbol is 4 QTA units). */ +type record length(16) of int16_t PTCCH_TAI_ToA_MAP; +const PTCCH_TAI_ToA_MAP ptcch_toa_map_def := { + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0 +}; + +private altstep as_ta_ptcch(uint8_t bts_nr := 0, uint8_t trx_nr := 0, uint8_t ts_nr := 7, + in PTCCH_TAI_ToA_MAP toa_map := ptcch_toa_map_def) +runs on RAW_PCU_Test_CT { + var RAW_PCU_Event event; + var integer ss; + + /* Send Access Bursts on PTCCH/U for every TA Index */ + [] BTS.receive(tr_RAW_PCU_EV(TDMA_EV_PTCCH_UL_BURST)) -> value event { + ss := f_tdma_ptcch_fn2ss(event.data.tdma_fn); + if (ss < 0) { mtc.stop; } /* Shall not happen */ + + log("Sending an Access Burst on PTCCH/U", + ", sub-slot=", ss, " (TAI)", + ", fn=", event.data.tdma_fn, + ", ToA=", toa_map[ss], " (QTA)"); + /* TODO: do we care about RA and burst format? */ + BTS.send(ts_PCUIF_RACH_IND(bts_nr, trx_nr, ts_nr, + ra := oct2int('3A'O), + is_11bit := 0, + burst_type := BURST_TYPE_0, + fn := event.data.tdma_fn, + arfcn := 871, + qta := toa_map[ss], + sapi := PCU_IF_SAPI_PTCCH)); + repeat; + } +} + +private function f_TC_ta_ptcch_ul_multi_tbf(in PTCCH_TAI_ToA_MAP ptcch_toa_map, + template PTCCHDownlinkMsg t_ta_msg) +runs on RAW_PCU_Test_CT { + var PTCCHDownlinkMsg ta_msg; + var PCUIF_Message pcu_msg; + timer T; + + /* First, send an RTS.req for the upcoming PTCCH/D block */ + BTS.send(ts_PCUIF_RTS_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, + sapi := PCU_IF_SAPI_PTCCH, fn := 0, + arfcn := 871, block_nr := 0)); + T.start(2.0); + alt { + /* Keep sending of Access Bursts during two multi-frames (period of PTCCH/D) + * with increasing ToA (Timing of Arrival) values: 0, 7, 14, 28, 35... */ + [] as_ta_ptcch(bts_nr := 0, trx_nr := 0, ts_nr := 7, toa_map := ptcch_toa_map); + /* In the end of 2nd multi-frame we should receive a PTCCH/D block */ + [] BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, + sapi := PCU_IF_SAPI_PTCCH)) -> value pcu_msg { + ta_msg := dec_PTCCHDownlinkMsg(pcu_msg.u.data_req.data); + log("Rx PTCCH/D message: ", ta_msg); + + /* Make sure Timing Advance values match our expectations */ + if (match(ta_msg, t_ta_msg)) { + setverdict(pass); + } else { + setverdict(fail, "PTCCH/D message does not match: ", t_ta_msg); + } + } + [] BTS.receive { repeat; } + [] T.timeout { + setverdict(fail, "Timeout waiting for a PTCCH/D block"); + mtc.stop; + } + } +} + +testcase TC_ta_ptcch_ul_multi_tbf() runs on RAW_PCU_Test_CT { + var template PacketUlAssign t_ul_tbf_ass; + var PacketUlAssign ul_tbf_ass[7]; + var GsmRrMessage rr_msg[7]; + var boolean ok; + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Enable forwarding of PTCCH/U TDMA events to us */ + BTS.send(ts_RAW_PCU_CMD(TDMA_CMD_ENABLE_PTCCH_UL_FWD)); + + /* Establish 7 Uplink TBFs (USF flag is 3 bits long, '111'B is reserved) */ + for (var integer i := 0; i < 7; i := i + 1) { + ok := f_establish_tbf(rr_msg[i], ta := 0); + if (not ok) { + setverdict(fail, "Failed to establish an Uplink TBF #", i); + mtc.stop; + } + + /* Make sure we received an UL TBF Assignment */ + if (match(rr_msg[i], tr_IMM_TBF_ASS(dl := false, rest := tr_IaRestOctets_ULAss(?)))) { + ul_tbf_ass[i] := rr_msg[i].payload.imm_ass.rest_octets.hh.pa.uldl.ass.ul; + log("Rx Uplink TBF assignment for #", i, ": ", ul_tbf_ass[i]); + } else { + setverdict(fail, "Failed to match UL TBF Assignment for #", i); + mtc.stop; + } + + /* We expect incremental TFI/USF assignment (dynamic allocation) */ + t_ul_tbf_ass := tr_PacketUlDynAssign(tfi := i, usf := i); + if (not match(ul_tbf_ass[i], t_ul_tbf_ass)) { + setverdict(fail, "Failed to match Packet Uplink Assignment for #", i); + mtc.stop; + } + + /* We also expect Timing Advance Index to be a part of the assignment */ + if (ul_tbf_ass[i].dynamic.ta_index != i) { + setverdict(fail, "Failed to match Timing Advance Index for #", i); + /* Keep going, the current OsmoPCU does not assign TA Index */ + } + } + + /* Prepare a list of ToA values for Access Bursts to be sent on PTCCH/U */ + var PTCCH_TAI_ToA_MAP toa_map := ptcch_toa_map_def; + for (var integer i := 0; i < 7; i := i + 1) { + /* ToA in units of 1/4 of a symbol */ + toa_map[i] := (i + 1) * 7 * 4; + } + + /* Now we have all 7 TBFs established in one-phase access mode, + * however we will not be sending any data on them. Instead, we + * will be sending RACH.ind on PTCCH/U during 4 multi-frame + * periods (TAI 0..8), and then will check two PTCCH/D blocks. + * + * Why not 4 TBFs at once? Because Uplink is delayed by 3 TDMA + * time-slots, so at the moment of scheduling a PTCCH/D block + * the PCU has odd number of PTCCH/U Access Bursts received. */ + f_TC_ta_ptcch_ul_multi_tbf(toa_map, tr_PTCCHDownlinkMsg( + tai0_ta := 7, tai1_ta := 14, tai2_ta := 21, + /* Other values are not known (yet) */ + tai3_ta := ?)); + f_TC_ta_ptcch_ul_multi_tbf(toa_map, tr_PTCCHDownlinkMsg( + tai0_ta := 7, tai1_ta := 14, tai2_ta := 21, + tai3_ta := 28, tai4_ta := 35, tai5_ta := 42, + /* Other values are out of our interest */ + tai6_ta := ?)); +} + +/* Default link quality adaptation (Coding Scheme) ranges (inclusive). + * OsmoPCU (VTY): cs link-quality-ranges cs1 6 cs2 5 8 cs3 7 13 cs4 12 + * + * NOTE: the ranges are intentionally overlapping because OsmoPCU + * does not change CS/MCS on the range borders (5-6, 7-8, 12-13). */ +private template integer CS1_lqual_dB_range := (-infinity .. 6); +private template integer CS2_lqual_dB_range := (5 .. 8); +private template integer CS3_lqual_dB_range := (7 .. 13); +private template integer CS4_lqual_dB_range := (12 .. infinity); + +testcase TC_cs_lqual_ul_tbf() runs on RAW_PCU_Test_CT { + var GsmRrMessage rr_imm_ass; + var PacketUlAssign ul_tbf_ass; + var RlcmacDlBlock dl_block; + var PCUIF_Message pcu_msg; + var octetstring data; + var boolean ok; + var uint32_t unused_fn; + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + f_pcuvty_set_allowed_cs_mcs(); + f_pcuvty_set_link_quality_ranges(); + + /* Establish an Uplink TBF */ + ok := f_establish_tbf(rr_imm_ass); + if (not ok) { + setverdict(fail, "Failed to establish TBF"); + mtc.stop; + } + + ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); + if (not ok) { + setverdict(fail, "Immediate Assignment not an Uplink TBF"); + mtc.stop; + } + + var template (value) RlcmacUlBlock ul_data := t_RLCMAC_UL_DATA( + tfi := ul_tbf_ass.dynamic.tfi_assignment, + cv := 15, /* 16 UL blocks to be sent (to be overridden in loop) */ + bsn := 0, /* TODO: what should be here? */ + blocks := { /* To be generated in loop */ }); + + /* HACK: patch missing TLLI; otherwise OsmoPCU rejects DATA.req */ + ul_data.data.tlli := '00000001'O; + + /* The actual / old link quality values. We need to keep track of the old + * (basically previous) link quality value, because OsmoPCU actually + * changes the coding scheme if not only the actual, but also the old + * value leaves the current link quality range (window). */ + var integer lqual := 0; + var integer lqual_old; + + /* 16 UL blocks (0 .. 15 dB, step = 1 dB) */ + for (var integer i := 0; i < 16; i := i + 1) { + /* Prepare a new UL block (CV, random payload) */ + ul_data.data.mac_hdr.countdown := (15 - i); + ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; + + /* Update the old / actual link quality */ + lqual_old := lqual; + lqual := i; + + /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ + log("Sending DATA.ind with link quality (dB): ", lqual); + f_tx_rlcmac_ul_block(ul_data, lqual * 10); + + /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ + f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); + + log("Rx Packet Uplink ACK / NACK with Channel Coding Command: ", + dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd); + + /* Match the received Channel Coding Command. Since we are increasing + * the link quality value on each iteration and not decreasing, there + * is no need to check the both old and current link quality values. */ + var template ChCodingCommand ch_coding; + select (lqual_old) { + case (CS1_lqual_dB_range) { ch_coding := CH_CODING_CS1; } + case (CS2_lqual_dB_range) { ch_coding := CH_CODING_CS2; } + case (CS3_lqual_dB_range) { ch_coding := CH_CODING_CS3; } + case (CS4_lqual_dB_range) { ch_coding := CH_CODING_CS4; } + } + + if (not match(dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd, ch_coding)) { + setverdict(fail, "Channel Coding does not match our expectations: ", ch_coding); + } else { + setverdict(pass); + } + } +} + +/* Test the max UL CS set by VTY works fine */ +testcase TC_cs_initial_ul() runs on RAW_PCU_Test_CT { + var GsmRrMessage rr_imm_ass; + var PacketUlAssign ul_tbf_ass; + var RlcmacDlBlock dl_block; + var boolean ok; + var integer lqual_cb; + var ChCodingCommand last_ch_coding; + var uint32_t unused_fn; + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Set initial UL CS to 3 */ + g_cs_initial_ul := 3; + f_pcuvty_set_allowed_cs_mcs(); + f_pcuvty_set_link_quality_ranges(); + + /* Take lqual (dB->cB) so that we stay in that CS */ + lqual_cb := g_cs_lqual_ranges[2].low * 10; + + /* Establish an Uplink TBF */ + ok := f_establish_tbf(rr_imm_ass); + if (not ok) { + setverdict(fail, "Failed to establish TBF"); + mtc.stop; + } + + ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); + if (not ok) { + setverdict(fail, "Immediate Assignment not an Uplink TBF"); + mtc.stop; + } + + var template (value) RlcmacUlBlock ul_data := t_RLCMAC_UL_DATA( + tfi := ul_tbf_ass.dynamic.tfi_assignment, + cv := 3, /* 8 UL blocks to be sent (to be overridden in loop) */ + bsn := 0, /* TODO: what should be here? */ + blocks := { /* To be generated in loop */ }); + + /* HACK: patch missing TLLI; otherwise OsmoPCU rejects DATA.req */ + ul_data.data.tlli := '00000001'O; + + /* 3 UL blocks, check we are in same initial CS: */ + for (var integer i := 0; i < 3; i := i + 1) { + /* Prepare a new UL block (CV, random payload) */ + ul_data.data.mac_hdr.countdown := (7 - i); + ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; + + /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ + f_tx_rlcmac_ul_block(ul_data, lqual_cb); + + /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ + f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); + last_ch_coding := dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd; + } + + if (last_ch_coding != CH_CODING_CS3) { + setverdict(fail, "Channel Coding does not match our expectations (CS-3): ", last_ch_coding); + mtc.stop; + } + + setverdict(pass); + + /* Remaining UL blocks are used to make sure regardless of initial + /* lqual, we can go lower at any time */ + + /* 5 UL blocks, check we are in same initial CS: */ + for (var integer i := 3; i < 8; i := i + 1) { + /* Prepare a new UL block (CV, random payload) */ + ul_data.data.mac_hdr.countdown := (7 - i); + ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; + + /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ + f_tx_rlcmac_ul_block(ul_data, 0); /* 0 dB, make sure we downgrade CS */ + + /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ + f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); + + last_ch_coding := dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd; + } + + if (last_ch_coding != CH_CODING_CS1) { + setverdict(fail, "Channel Coding does not match our expectations (CS-1): ", last_ch_coding); + } else { + setverdict(pass); + } +} + +/* Test the max UL CS set by VTY works fine */ +testcase TC_cs_max_ul() runs on RAW_PCU_Test_CT { + var GsmRrMessage rr_imm_ass; + var PacketUlAssign ul_tbf_ass; + var RlcmacDlBlock dl_block; + var boolean ok; + var ChCodingCommand last_ch_coding; + var uint32_t unused_fn; + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Set maximum allowed UL CS to 3 */ + g_cs_max_ul := 3; + f_pcuvty_set_allowed_cs_mcs(); + f_pcuvty_set_link_quality_ranges(); + + /* Establish an Uplink TBF */ + ok := f_establish_tbf(rr_imm_ass); + if (not ok) { + setverdict(fail, "Failed to establish TBF"); + mtc.stop; + } + + ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); + if (not ok) { + setverdict(fail, "Immediate Assignment not an Uplink TBF"); + mtc.stop; + } + + var template (value) RlcmacUlBlock ul_data := t_RLCMAC_UL_DATA( + tfi := ul_tbf_ass.dynamic.tfi_assignment, + cv := 15, /* 16 UL blocks to be sent (to be overridden in loop) */ + bsn := 0, /* TODO: what should be here? */ + blocks := { /* To be generated in loop */ }); + + /* HACK: patch missing TLLI; otherwise OsmoPCU rejects DATA.req */ + ul_data.data.tlli := '00000001'O; + + /* 16 UL blocks */ + for (var integer i := 0; i < 16; i := i + 1) { + /* Prepare a new UL block (CV, random payload) */ + ul_data.data.mac_hdr.countdown := (15 - i); + ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; + + /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ + f_tx_rlcmac_ul_block(ul_data, 40*10); /* 40 dB */ + + /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ + f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); + + last_ch_coding := dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd; + } + + if (last_ch_coding != CH_CODING_CS3) { + setverdict(fail, "Channel Coding does not match our expectations (CS-3): ", last_ch_coding); + } else { + setverdict(pass); + } +} + +/* Verify PCU drops TBF after some time of inactivity. */ +testcase TC_t3169() runs on RAW_PCU_Test_CT { + var PCUIF_info_ind info_ind; + var GsmRrMessage rr_imm_ass; + var PacketUlAssign ul_tbf_ass; + var RlcmacDlBlock dl_block; + var PCUIF_Message pcu_msg; + var octetstring data; + var boolean ok; + var uint32_t unused_fn; + var OCT4 tlli := '00000001'O; + + /* Initialize NS/BSSGP side */ + f_init_bssgp(); + + info_ind := valueof(ts_PCUIF_INFO_default); + /* Set timer to 1 sec (default 5) to speedup test: */ + info_ind.t3169 := 1; + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename(), info_ind); + + /* Establish BSSGP connection to the PCU */ + f_bssgp_establish(); + f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); + + /* Establish an Uplink TBF */ + ok := f_establish_tbf(rr_imm_ass); + if (not ok) { + setverdict(fail, "Failed to establish TBF"); + mtc.stop; + } + + ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); + if (not ok) { + setverdict(fail, "Immediate Assignment not an Uplink TBF"); + mtc.stop; + } + + /* Send one UL block and make sure it is ACKED fine */ + f_tx_rlcmac_ul_n_blocks(ul_tbf_ass, 1); + f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); + /* UL block should be received in SGSN */ + BSSGP[0].receive(tr_BSSGP_UL_UD(tlli, mp_gb_cfg.cell_id)); + + /* Wait until T3169 fires (plus 1 extra sec to make sure) */ + f_sleep(int2float(info_ind.t3169) + 1.0); + + /* Send an UL block once again, the TBF should be gone by now so no ACK */ + f_tx_rlcmac_ul_n_blocks(ul_tbf_ass, 1); + f_rx_rlcmac_dl_block_exp_dummy(dl_block); +} + +/* Verify that a Downlink TBF can be assigned using PACCH shortly after the + * release of prev DL TBF due to MS staying in PDCH for a while (T3192, in PCU + * T3193) after DL TBF release */ +testcase TC_t3193() runs on RAW_PCU_Test_CT { + var GsmRrMessage rr_imm_ass; + var PacketDlAssign dl_tbf_ass; + var RlcmacDlBlock dl_block; + var octetstring data := f_rnd_octstring(10); + var boolean ok; + var uint32_t sched_fn; + var OCT4 tlli := '00000001'O; + var AckNackDescription ack_nack_desc := valueof(t_AckNackDescription_init); + + /* Initialize NS/BSSGP side */ + f_init_bssgp(); + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Establish BSSGP connection to the PCU */ + f_bssgp_establish(); + f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); + + /* SGSN sends some DL data, PCU will page on CCCH (PCH) */ + BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data)); + f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); + ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); + if (not ok) { + setverdict(fail, "Immediate Assignment not a Downlink TBF"); + mtc.stop; + } + /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ + f_sleep(X2002); + f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0); + + /* ACK the DL block */ + f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); + f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); + /* we are done with the DL-TBF here so far, let's clean up our local state: */ + ack_nack_desc := valueof(t_AckNackDescription_init) + + /* Now that final DL block is ACKED and TBF is released, T3193 in PCU + (T3192 in MS) was started and until it fires the MS will be abailable + on PDCH in case new data arrives from SGSN. Let's verify it: */ + BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data)); + f_rx_rlcmac_dl_block_exp_pkt_ass(dl_block, sched_fn); + f_tx_rlcmac_ul_block(ts_RLCMAC_CTRL_ACK(tlli), 0, sched_fn); + + /* Now that we confirmed the new assignment in the dl-tbf, lets receive the data and ack it */ + f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0); + f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); + f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); +} + +/* Test scenario where MS wants to send some data on PDCH against SGSN and it is + * answered, so TBFs for uplink and later for downlink are created. + */ +private function f_TC_mo_ping_pong(template (omit) MSRadioAccessCapabilityV ms_racap := omit, template (present) CodingScheme exp_cs_mcs := ?) runs on RAW_PCU_Test_CT { + var GsmRrMessage rr_imm_ass; + var PacketUlAssign ul_tbf_ass; + var PacketDlAssign dl_tbf_ass; + var RlcmacDlBlock dl_block; + var PCUIF_Message pcu_msg; + var octetstring data := f_rnd_octstring(10); + var boolean ok; + var uint32_t sched_fn; + var OCT4 tlli := '00000001'O; + var AckNackDescription ack_nack_desc := valueof(t_AckNackDescription_init); + + /* Initialize NS/BSSGP side */ + f_init_bssgp(); + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Establish BSSGP connection to the PCU */ + f_bssgp_establish(); + f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); + + /* Establish an Uplink TBF */ + ok := f_establish_tbf(rr_imm_ass); + if (not ok) { + setverdict(fail, "Failed to establish TBF"); + mtc.stop; + } + ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); + if (not ok) { + setverdict(fail, "Immediate Assignment not an Uplink TBF"); + mtc.stop; + } + + if (not istemplatekind(ms_racap, "omit")) { + /* Send PACKET RESOURCE REQUEST to upgrade to EGPRS + * (see 3GPP TS 04.60 "7.1.3.1 Initiation of the Packet resource request procedure") + */ + f_tx_rlcmac_ul_block(ts_RLC_UL_CTRL_ACK(valueof(ts_RlcMacUlCtrl_PKT_RES_REQ(tlli, ms_racap))), 0); + f_rx_rlcmac_dl_block_exp_pkt_ul_ass(dl_block, sched_fn); + if (dl_block.ctrl.payload.u.ul_assignment.identity.tlli.tlli != tlli) { + setverdict(fail, "Wrong TLLI ", dl_block.ctrl.payload.u.ul_assignment.identity.tlli, " received vs exp ", tlli); + mtc.stop; + } + } + + /* Send one UL block and make sure it is ACKED fine */ + f_tx_rlcmac_ul_n_blocks(ul_tbf_ass, 1); + f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, sched_fn); + /* DL ACK/NACK sets poll+rrbp requesting PACKET CONTROL ACK */ + f_tx_rlcmac_ul_block(ts_RLCMAC_CTRL_ACK(tlli), 0, sched_fn); + + /* UL block should be received in SGSN */ + BSSGP[0].receive(tr_BSSGP_UL_UD(tlli, mp_gb_cfg.cell_id)); + + /* Now SGSN sends some DL data, PCU will page on CCCH (PCH) */ + BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data)); + f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); + + ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); + if (not ok) { + setverdict(fail, "Immediate Assignment not a Downlink TBF"); + mtc.stop; + } + + /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ + f_sleep(X2002); + f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0, exp_cs_mcs); + + /* ACK the DL block */ + f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); + f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); +} + +/* Test scenario where MS wants to send some data on PDCH against SGSN and it is + * answered, so TBFs for uplink and later for downlink are created. + */ +testcase TC_mo_ping_pong() runs on RAW_PCU_Test_CT { + var CodingScheme exp_cs_mcs := CS_1; + f_TC_mo_ping_pong(omit, exp_cs_mcs); +} + + +testcase TC_mo_ping_pong_with_ul_racap() runs on RAW_PCU_Test_CT { + var MultislotCap_GPRS mscap_gprs := { + gprsmultislotclass := '00011'B, + gprsextendeddynalloccap := '0'B + }; + var MSRadioAccessCapabilityV ms_racap := { valueof(ts_RaCapRec('0001'B /* E-GSM */, mscap_gprs, omit)) }; + var CodingScheme exp_cs_mcs := CS_2; + + f_TC_mo_ping_pong(ms_racap, exp_cs_mcs); +} + +/* Test scenario where SGSN wants to send some data against MS and it is + * answered by the MS on PDCH, so TBFs for downlink and later for uplink are created. + */ +private function f_TC_mt_ping_pong(template (omit) MSRadioAccessCapabilityV_BSSGP ms_racap := omit, template (present) CodingScheme exp_cs_mcs := ?) runs on RAW_PCU_Test_CT { + var GsmRrMessage rr_imm_ass; + var PacketUlAssign ul_tbf_ass; + var PacketDlAssign dl_tbf_ass; + var RlcmacDlBlock dl_block; + var PCUIF_Message pcu_msg; + var octetstring data := f_rnd_octstring(10); + var boolean ok; + var uint32_t sched_fn; + var OCT4 tlli := '00000001'O; + var AckNackDescription ack_nack_desc := valueof(t_AckNackDescription_init); + + /* Initialize NS/BSSGP side */ + f_init_bssgp(); + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Establish BSSGP connection to the PCU */ + f_bssgp_establish(); + f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); + + /* SGSN sends some DL data, PCU will page on CCCH (PCH) */ + BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data, ms_racap)); + f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); + + ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); + if (not ok) { + setverdict(fail, "Immediate Assignment not a Downlink TBF"); + mtc.stop; + } + + /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ + f_sleep(X2002); + f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0, exp_cs_mcs); + + /* ACK the DL block */ + f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); + f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); + + /* Now MS wants to answer the DL data, Establish an Uplink TBF */ + ok := f_establish_tbf(rr_imm_ass); + if (not ok) { + setverdict(fail, "Failed to establish TBF"); + mtc.stop; + } + ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); + if (not ok) { + setverdict(fail, "Immediate Assignment not an Uplink TBF"); + mtc.stop; + } + + /* Send one UL block and make sure it is ACKED fine */ + f_tx_rlcmac_ul_n_blocks(ul_tbf_ass, 1); + f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, sched_fn); + /* DL ACK/NACK sets poll+rrbp requesting PACKET CONTROL ACK */ + f_tx_rlcmac_ul_block(ts_RLCMAC_CTRL_ACK(tlli), 0, sched_fn); + + /* UL block should be received in SGSN */ + BSSGP[0].receive(tr_BSSGP_UL_UD(tlli, mp_gb_cfg.cell_id)); +} + +testcase TC_mt_ping_pong() runs on RAW_PCU_Test_CT { + var CodingScheme exp_cs_mcs := CS_1; + f_TC_mt_ping_pong(omit, exp_cs_mcs); +} + +/* TC_mt_ping_pong, but DL-UNITDATA contains RA Access capability with (M)CS +/* information about the MS */ +testcase TC_mt_ping_pong_with_dl_racap() runs on RAW_PCU_Test_CT { + var MultislotCap_GPRS_BSSGP mscap_gprs := { + gprsmultislotclass := '00011'B, + gprsextendeddynalloccap := '0'B + } ; + var MSRadioAccessCapabilityV_BSSGP ms_racap := { valueof(ts_RaCapRec_BSSGP('0001'B /* E-GSM */, mscap_gprs, omit)) }; + var CodingScheme exp_cs_mcs := CS_2; + f_TC_mt_ping_pong(ms_racap, exp_cs_mcs); +} + +/* Verify that if PCU doesn't get an ACK for first DL block after IMM ASS, it + * will retry by retransmitting both the IMM ASS + DL block after poll (ack) + * timeout occurs (specified by sent RRBP on DL block). */ +testcase TC_imm_ass_dl_block_retrans() runs on RAW_PCU_Test_CT { + var GsmRrMessage rr_imm_ass; + var PacketDlAssign dl_tbf_ass; + var RlcmacDlBlock dl_block; + var octetstring data := f_rnd_octstring(10); + var boolean ok; + var uint32_t sched_fn; + var OCT4 tlli := '00000001'O; + var AckNackDescription ack_nack_desc := valueof(t_AckNackDescription_init); + + /* Initialize NS/BSSGP side */ + f_init_bssgp(); + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Establish BSSGP connection to the PCU */ + f_bssgp_establish(); + f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); + + /* SGSN sends some DL data, PCU will page on CCCH (PCH) */ + BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data)); + f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); + ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); + if (not ok) { + setverdict(fail, "Immediate Assignment not a Downlink TBF"); + mtc.stop; + } + + /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ + f_sleep(X2002); + f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0); + + /* Now we don't ack the dl block (emulate MS failed receiveing IMM ASS + * or GPRS DL, or DL ACK was lost for some reason). As a result, PCU + * should retrigger IMM ASS + GPRS DL procedure after poll timeout. */ + f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); + ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); + if (not ok) { + setverdict(fail, "Immediate Assignment not a Downlink TBF"); + mtc.stop; + } + /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ + f_sleep(X2002); + f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0); + + /* ACK the DL block */ + f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); + f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); +} + +private function f_pkt_paging_match_imsi(in PacketPagingReq req, hexstring imsi) { + var MobileIdentityLV_Paging mi_lv := req.repeated_pageinfo.cs.mobile_identity; + var MobileIdentityV mi := dec_MobileIdentityV(mi_lv.mobile_id); + + if (mi_lv.len != 8) { /* 8 octets: type of ID (3 bits) + even/odd flag (1 bit) + 15 BCD-encoded digits (60 bits) */ + setverdict(fail, "Mobile Identity length mismatch: ", + "expected: 8, got: ", mi_lv.len); + mtc.stop; + } + + /* Make sure MI contains IMSI before referencing it */ + if (mi.typeOfIdentity != '001'B) { + setverdict(fail, "Mobile Identity must be of type IMSI ('001'B), ", + "got: ", mi.typeOfIdentity); + mtc.stop; + } else if (mi.oddEvenInd_identity.imsi.digits != imsi) { + setverdict(fail, "Mobile Identity contains unexpected IMSI, ", + "expected: ", imsi, " got: ", mi.oddEvenInd_identity.imsi.digits); + mtc.stop; + } +} + +private function f_pkt_paging_match_tmsi(in PacketPagingReq req, template GsmTmsi tmsi) { + if (not match(req.repeated_pageinfo.cs.tmsi, tmsi)) { + setverdict(fail, "Mobile Identity (TMSI/P-TMSI) mismatch: ", + "expected: ", tmsi, "got: ", req.repeated_pageinfo.cs.tmsi); + mtc.stop; + } +} + +/* Test CS paging over the BTS<->PCU socket. + * When a (class B or C, not A) MS has an active TBF (or is on the PDCH), the MS can not react on CS paging over CCCH. + * Paging should be send on the PACCH. + * + * 1. Send a Paging Request over PCU socket. + * 2. Send a Ready-To-Send message over PCU socket + * 3. Expect a Paging Frame + */ +testcase TC_paging_cs_from_bts() runs on RAW_PCU_Test_CT { + var GsmRrMessage rr_imm_ass; + var PacketUlAssign ul_tbf_ass; + var RlcmacDlBlock dl_block; + var boolean ok; + var OCT4 tlli := '00000001'O; + var MobileIdentityLV mi; + var octetstring mi_enc_lv; + var hexstring imsi := f_gen_imsi(42); + + /* Initialize NS/BSSGP side */ + f_init_bssgp(); + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Establish BSSGP connection to the PCU */ + f_bssgp_establish(); + f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); + + /* Establish an Uplink TBF */ + ok := f_establish_tbf(rr_imm_ass); + if (not ok) { + setverdict(fail, "Failed to establish TBF"); + mtc.stop; + } + + ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); + if (not ok) { + setverdict(fail, "Immediate Assignment not an Uplink TBF"); + mtc.stop; + } + + + /* build mobile Identity */ + mi := valueof(ts_MI_IMSI_LV(imsi)); + mi_enc_lv := enc_MobileIdentityLV(mi); + /* Send paging request */ + BTS.send(ts_PCUIF_PAG_REQ(bts_nr := 0, id_lv := mi_enc_lv, chan_needed := 0, + sapi :=PCU_IF_SAPI_PDTCH)); + + /* Receive it on BTS side towards MS */ + f_rx_rlcmac_dl_block_exp_pkt_pag_req(dl_block); + + /* Make sure that Packet Paging Request contains the same IMSI */ + f_pkt_paging_match_imsi(dl_block.ctrl.payload.u.paging, imsi); + + setverdict(pass); +} + +/* Test CS paging over Gb (SGSN->PCU->BTS[PDCH]). + */ +private function f_tc_paging_cs_from_sgsn(Nsvci bvci, boolean use_ptmsi := false) +runs on RAW_PCU_Test_CT { + var GsmRrMessage rr_imm_ass; + var PacketUlAssign ul_tbf_ass; + var RlcmacDlBlock dl_block; + var boolean ok; + var OCT4 tlli := '00000001'O; + var hexstring imsi := f_gen_imsi(42); + var GsmTmsi tmsi; + + /* Initialize NS/BSSGP side */ + f_init_bssgp(); + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Establish BSSGP connection to the PCU */ + f_bssgp_establish(); + f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); + + /* Establish an Uplink TBF */ + ok := f_establish_tbf(rr_imm_ass); + if (not ok) { + setverdict(fail, "Failed to establish TBF"); + mtc.stop; + } + + ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); + if (not ok) { + setverdict(fail, "Immediate Assignment not an Uplink TBF"); + mtc.stop; + } + + /* Send paging request with or without TMSI */ + if (use_ptmsi) { + tmsi := oct2int(f_rnd_octstring(4)); /* Random P-TMSI */ + BSSGP[0].send(ts_BSSGP_CS_PAGING_PTMSI(bvci, imsi, tmsi)); + } else { + BSSGP[0].send(ts_BSSGP_CS_PAGING_IMSI(bvci, imsi)); + } + + /* Receive it on BTS side towards MS */ + f_rx_rlcmac_dl_block_exp_pkt_pag_req(dl_block); + + /* Make sure that Packet Paging Request contains the same P-TMSI/IMSI */ + if (use_ptmsi) { + f_pkt_paging_match_tmsi(dl_block.ctrl.payload.u.paging, tmsi); + } else { + f_pkt_paging_match_imsi(dl_block.ctrl.payload.u.paging, imsi); + } + + setverdict(pass); +} + +testcase TC_paging_cs_from_sgsn_sign_ptmsi() runs on RAW_PCU_Test_CT { + f_tc_paging_cs_from_sgsn(0, true); +} + +testcase TC_paging_cs_from_sgsn_sign() runs on RAW_PCU_Test_CT { + f_tc_paging_cs_from_sgsn(0); +} + +testcase TC_paging_cs_from_sgsn_ptp() runs on RAW_PCU_Test_CT { + f_tc_paging_cs_from_sgsn(mp_gb_cfg.bvci); +} + +/* Test PS paging over Gb (SGSN->PCU->BTS[CCCH]). + */ +private function f_tc_paging_ps_from_sgsn(Nsvci bvci, boolean use_ptmsi := false) +runs on RAW_PCU_Test_CT { + var OCT4 tlli := '00000001'O; + var integer imsi_suff_tx := 423; + var hexstring imsi := f_gen_imsi(imsi_suff_tx); + + /* Initialize NS/BSSGP side */ + f_init_bssgp(); + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Establish BSSGP connection to the PCU */ + f_bssgp_establish(); + f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); + + /* Send BSSGP PAGING-PS (with or without TMSI), wait for RR Paging Request Type 1. + * Make sure that both paging group (IMSI suffix) and Mobile Identity match. */ + if (use_ptmsi) { + var OCT4 tmsi := f_rnd_octstring(4); /* Random P-TMSI */ + BSSGP[0].send(ts_BSSGP_PS_PAGING_PTMSI(bvci, imsi, oct2int(tmsi))); + f_pcuif_rx_pch_pag_req1(t_MI_TMSI(tmsi), imsi_suff_tx); + } else { + BSSGP[0].send(ts_BSSGP_PS_PAGING_IMSI(bvci, imsi)); + f_pcuif_rx_pch_pag_req1(tr_MI_IMSI(imsi), imsi_suff_tx); + } + + setverdict(pass); +} + +testcase TC_paging_ps_from_sgsn_sign_ptmsi() runs on RAW_PCU_Test_CT { + f_tc_paging_ps_from_sgsn(0, true); +} + +testcase TC_paging_ps_from_sgsn_sign() runs on RAW_PCU_Test_CT { + f_tc_paging_ps_from_sgsn(0); +} + +testcase TC_paging_ps_from_sgsn_ptp() runs on RAW_PCU_Test_CT { + f_tc_paging_ps_from_sgsn(mp_gb_cfg.bvci); +} + +private function f_TC_egprs_pkt_chan_req(in EGPRSPktChRequest req, + template GsmRrMessage t_imm_ass := ?, + PCUIF_BurstType bt := BURST_TYPE_1) +runs on RAW_PCU_Test_CT { + var GsmRrMessage rr_msg; + var uint16_t ra11; + var boolean ok; + + ra11 := enc_EGPRSPktChRequest2uint(req); + log("Sending EGPRS Packet Channel Request (", ra11, "): ", req); + + ok := f_establish_tbf(rr_msg, ra := ra11, is_11bit := 1, burst_type := bt); + if (not ok) { + setverdict(fail, "Failed to establush an Uplink TBF"); + mtc.stop; + } + + if (not match(rr_msg, t_imm_ass)) { + setverdict(fail, "Immediate Assignment does not match"); + mtc.stop; + } + + setverdict(pass); +} + +testcase TC_egprs_pkt_chan_req_signalling() runs on RAW_PCU_Test_CT { + var template GsmRrMessage imm_ass; + var template IaRestOctets rest; + var template EgprsUlAss ul_ass; + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + var EGPRSPktChRequest req := { + /* NOTE: other fields are set in the loop */ + signalling := { tag := '110011'B } + }; + + for (var integer i := 0; i < 6; i := i + 1) { + var BIT5 ext_ra := int2bit(f_rnd_int(32), 5); + req.signalling.random_bits := ext_ra; + + /* For signalling, do we expect Multiblock UL TBF Assignment? */ + ul_ass := tr_EgprsUlAssMultiblock(ext_ra := ext_ra); + rest := tr_IaRestOctets_EGPRSULAss(ul_ass); + imm_ass := tr_IMM_TBF_ASS(dl := false, rest := rest); + + f_TC_egprs_pkt_chan_req(req, imm_ass); + } +} + +testcase TC_egprs_pkt_chan_req_one_phase() runs on RAW_PCU_Test_CT { + var template GsmRrMessage imm_ass; + var template IaRestOctets rest; + var template EgprsUlAss ul_ass; + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + var EGPRSPktChRequest req := { + /* NOTE: other fields are set in the loop */ + one_phase := { tag := '0'B } + }; + + for (var integer i := 0; i < 6; i := i + 1) { + var BIT5 ext_ra := int2bit(f_rnd_int(32), 5); + var BIT5 mslot_class := int2bit(f_rnd_int(32), 5); + var BIT2 priority := substr(ext_ra, 0, 2); + var BIT3 rand := substr(ext_ra, 2, 3); + + req.one_phase.multislot_class := mslot_class; + req.one_phase.priority := priority; + req.one_phase.random_bits := rand; + + /* For one phase access, do we expect Dynamic UL TBF Assignment? */ + ul_ass := tr_EgprsUlAssDynamic(ext_ra := ext_ra); + rest := tr_IaRestOctets_EGPRSULAss(ul_ass); + imm_ass := tr_IMM_TBF_ASS(dl := false, rest := rest); + + f_TC_egprs_pkt_chan_req(req, imm_ass); + } +} + +testcase TC_egprs_pkt_chan_req_two_phase() runs on RAW_PCU_Test_CT { + var template GsmRrMessage imm_ass; + var template IaRestOctets rest; + var template EgprsUlAss ul_ass; + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + var EGPRSPktChRequest req := { + /* NOTE: other fields are set in the loop */ + two_phase := { tag := '110000'B } + }; + + for (var integer i := 0; i < 6; i := i + 1) { + var BIT5 ext_ra := int2bit(f_rnd_int(32), 5); + var BIT2 priority := substr(ext_ra, 0, 2); + var BIT3 rand := substr(ext_ra, 2, 3); + + req.two_phase.priority := priority; + req.two_phase.random_bits := rand; + + /* For two phase access, do we expect Multiblock UL TBF Assignment? */ + ul_ass := tr_EgprsUlAssMultiblock(ext_ra := ext_ra); + rest := tr_IaRestOctets_EGPRSULAss(ul_ass); + imm_ass := tr_IMM_TBF_ASS(dl := false, rest := rest); + + f_TC_egprs_pkt_chan_req(req, imm_ass); + } +} + +control { + execute( TC_pcuif_suspend() ); + execute( TC_ta_ptcch_idle() ); + execute( TC_ta_rach_imm_ass() ); + execute( TC_ta_idle_dl_tbf_ass() ); + execute( TC_ta_ptcch_ul_multi_tbf() ); + execute( TC_cs_lqual_ul_tbf() ); + execute( TC_cs_initial_ul() ); + execute( TC_cs_max_ul() ); + execute( TC_t3169() ); + execute( TC_t3193() ); + execute( TC_mo_ping_pong() ); + execute( TC_mo_ping_pong_with_ul_racap() ); + execute( TC_mt_ping_pong() ); + execute( TC_mt_ping_pong_with_dl_racap() ); + execute( TC_imm_ass_dl_block_retrans() ); + execute( TC_paging_cs_from_bts() ); + execute( TC_paging_cs_from_sgsn_sign_ptmsi() ); + execute( TC_paging_cs_from_sgsn_sign() ); + execute( TC_paging_cs_from_sgsn_ptp() ); + execute( TC_paging_ps_from_sgsn_sign_ptmsi() ); + execute( TC_paging_ps_from_sgsn_sign() ); + execute( TC_paging_ps_from_sgsn_ptp() ); + + /* EGPRS specific test cases */ + execute( TC_egprs_pkt_chan_req_signalling() ); + execute( TC_egprs_pkt_chan_req_one_phase() ); + execute( TC_egprs_pkt_chan_req_two_phase() ); +} + + + + + + } diff --git a/pcu/PCU_Tests_RAW_NS.ttcn b/pcu/PCU_Tests_NS.ttcn similarity index 99% rename from pcu/PCU_Tests_RAW_NS.ttcn rename to pcu/PCU_Tests_NS.ttcn index 81b60c3d4..9ea5149a8 100644 --- a/pcu/PCU_Tests_RAW_NS.ttcn +++ b/pcu/PCU_Tests_NS.ttcn @@ -1,4 +1,4 @@ -module PCU_Tests_RAW_NS { +module PCU_Tests_NS { /* Osmocom PCU test suite for IP Sub-Network-Service (SNS) in TTCN-3 * (C) 2018-2019 Harald Welte @@ -12,7 +12,7 @@ module PCU_Tests_RAW_NS { import from General_Types all; import from Osmocom_Types all; -import from PCU_Tests_RAW all; +import from PCU_Tests all; import from SGSN_Components all; import from Osmocom_Gb_Types all; import from NS_CodecPort all; diff --git a/pcu/PCU_Tests_RAW.ttcn b/pcu/PCU_Tests_RAW.ttcn deleted file mode 100644 index 1348a8e71..000000000 --- a/pcu/PCU_Tests_RAW.ttcn +++ /dev/null @@ -1,1906 +0,0 @@ -module PCU_Tests_RAW { - -/* "RAW" PCU tests: Talk directly to the PCU socket of OsmoPCU on the one hand side (emulating - the BTS/BSC side PCU socket server) and the Gb interface on the other hand side. No NS/BSSGP - Emulation is used; rather, we simply use the NS_CodecPort to implement both standard and non- - standard procedures on the NS and BSSGP level. The goal of these tests is to test exactly - those NS and BSSGP implementations on the BSS (PCU) side. */ - -/* (C) 2018-2019 Harald Welte - * (C) 2019 Vadim Yanitskiy - * All rights reserved. - * - * Released under the terms of GNU General Public License, Version 2 or - * (at your option) any later version. - * - * SPDX-License-Identifier: GPL-2.0-or-later - */ - -friend module PCU_Tests_RAW_NS; - -import from General_Types all; -import from Osmocom_Types all; -import from GSM_Types all; -import from GSM_RR_Types all; - -import from Osmocom_VTY_Functions all; -import from TELNETasp_PortType all; - -import from MobileL3_GMM_SM_Types all; -import from RLCMAC_CSN1_Types all; -import from RLCMAC_Types all; - -import from MobileL3_CommonIE_Types all; -import from L3_Templates all; - -import from NS_Types all; -import from BSSGP_Types all; -import from Osmocom_Gb_Types all; - -import from BSSGP_Emulation all; /* BssgpConfig */ -import from NS_Emulation all; /* NSConfiguration */ - -import from UD_Types all; -import from PCUIF_Types all; -import from PCUIF_CodecPort all; -import from PCUIF_RAW_Components all; -import from IPL4asp_Types all; -import from Native_Functions all; -import from SGSN_Components all; - -modulepar { - charstring mp_pcu_sock_path := PCU_SOCK_DEFAULT; - - float X2002 := 0.2; /* Timer -2002, IMM ASSIGN confirm delay */ -} - - -/* FIXME: make sure to use parameters from mp_gb_cfg.cell_id in the PCU INFO IND */ -private template (value) PCUIF_info_ind ts_PCUIF_INFO_default := { - version := PCU_IF_VERSION, - flags := c_PCUIF_Flags_default, - trx := valueof(ts_PCUIF_InfoTrxs_def), - bsic := 7, - mcc := 262, - mnc := 42, - mnc_3_digits := 0, - lac := 13135, - rac := 0, - nsei := mp_nsconfig.nsei, - nse_timer := { 3, 3, 3, 3, 30, 3, 10 }, - cell_timer := { 3, 3, 3, 3, 3, 10, 3, 10, 3, 10, 3 }, - cell_id := 20960, - repeat_time := 5 * 50, - repeat_count := 3, - bvci := mp_gb_cfg.bvci, - t3142 := 20, - t3169 := 5, - t3191 := 5, - t3193_10ms := 160, - t3195 := 5, - t3101 := 10, - t3103 := 4, - t3105 := 8, - cv_countdown := 15, - dl_tbf_ext := 250 * 10, /* ms */ - ul_tbf_ext := 250 * 10, /* ms */ - initial_cs := 2, - initial_mcs := 6, - nsvci := { mp_nsconfig.nsvci, 0 }, - local_pprt := { mp_nsconfig.remote_udp_port, 0 }, - remote_port := { mp_nsconfig.local_udp_port, 0 }, - remote_ip := { f_inet_haddr(mp_nsconfig.local_ip) , '00000000'O } -} - -type record lqual_range { - /* component reference to the IPA_Client component used for RSL */ - uint8_t low, - uint8_t high -} - -type component RAW_PCU_Test_CT extends bssgp_CT { - /* Connection to the BTS component (one for now) */ - port RAW_PCU_MSG_PT BTS; - /* Connection to the PCUIF component */ - port RAW_PCU_MSG_PT PCUIF; - /* VTY connection to the PCU */ - port TELNETasp_PT PCUVTY; - - /* Uplink CS/MCS thresholds, default from pcu_main.c: */ - var lqual_range g_cs_lqual_ranges[4] := {{low := 0, high := 6}, - {low := 5, high := 8}, - {low := 7, high := 13}, - {low := 12,high := 35}}; - var lqual_range g_mcs_lqual_ranges[9] := {{low := 0, high := 6}, - {low := 5, high := 8}, - {low := 7, high := 13}, - {low := 12,high := 15}, - {low := 14, high := 17}, - {low := 16, high := 18}, - {low := 17,high := 20}, - {low := 19, high := 24}, - {low := 23,high := 35}}; - var uint8_t g_cs_initial_dl := 1; - var uint8_t g_cs_initial_ul := 1; - var uint8_t g_mcs_initial_dl := 1; - var uint8_t g_mcs_initial_ul := 1; - var uint8_t g_cs_max_dl := 4; - var uint8_t g_cs_max_ul := 4; - var uint8_t g_mcs_max_dl := 9; - var uint8_t g_mcs_max_ul := 9; - - var boolean g_egprs_only := false; - - /* Guard timeout */ - timer g_T_guard := 60.0; -}; - -private altstep as_Tguard_RAW() runs on RAW_PCU_Test_CT { - [] g_T_guard.timeout { - setverdict(fail, "Timeout of T_guard"); - mtc.stop; - } -} - -private function f_pcuvty_set_allowed_cs_mcs() runs on RAW_PCU_Test_CT { - f_vty_config2(PCUVTY, {"pcu"}, "cs " & int2str(g_cs_initial_dl) & " " & int2str(g_cs_initial_ul)); - f_vty_config2(PCUVTY, {"pcu"}, "cs max " & int2str(g_cs_max_dl) & " " & int2str(g_cs_max_ul)); - - f_vty_config2(PCUVTY, {"pcu"}, "mcs " & int2str(g_mcs_initial_dl) & " " & int2str(g_mcs_initial_ul)); - f_vty_config2(PCUVTY, {"pcu"}, "mcs max " & int2str(g_mcs_max_dl) & " " & int2str(g_mcs_max_ul)); -} - -private function f_pcuvty_set_link_quality_ranges() runs on RAW_PCU_Test_CT { - var charstring cmd; - - cmd := "cs link-quality-ranges" & - " cs1 " & int2str(g_cs_lqual_ranges[0].high) & - " cs2 " & int2str(g_cs_lqual_ranges[1].low) & " " & int2str(g_cs_lqual_ranges[1].high) & - " cs3 " & int2str(g_cs_lqual_ranges[2].low) & " " & int2str(g_cs_lqual_ranges[2].high) & - " cs4 " & int2str(g_cs_lqual_ranges[3].low); - f_vty_config2(PCUVTY, {"pcu"}, cmd); - - cmd := "mcs link-quality-ranges" & - " mcs1 " & int2str(g_mcs_lqual_ranges[0].high) & - " mcs2 " & int2str(g_mcs_lqual_ranges[1].low) & " " & int2str(g_mcs_lqual_ranges[1].high) & - " mcs3 " & int2str(g_mcs_lqual_ranges[2].low) & " " & int2str(g_mcs_lqual_ranges[2].high) & - " mcs4 " & int2str(g_mcs_lqual_ranges[3].low) & " " & int2str(g_mcs_lqual_ranges[3].high) & - " mcs5 " & int2str(g_mcs_lqual_ranges[4].low) & " " & int2str(g_mcs_lqual_ranges[4].high) & - " mcs6 " & int2str(g_mcs_lqual_ranges[5].low) & " " & int2str(g_mcs_lqual_ranges[5].high) & - " mcs7 " & int2str(g_mcs_lqual_ranges[6].low) & " " & int2str(g_mcs_lqual_ranges[6].high) & - " mcs8 " & int2str(g_mcs_lqual_ranges[7].low) & " " & int2str(g_mcs_lqual_ranges[7].high) & - " mcs9 " & int2str(g_mcs_lqual_ranges[8].low); - f_vty_config2(PCUVTY, {"pcu"}, cmd); -} - -private function f_init_vty(charstring id) runs on RAW_PCU_Test_CT { - map(self:PCUVTY, system:PCUVTY); - f_vty_set_prompts(PCUVTY); - f_vty_transceive(PCUVTY, "enable"); - - if (g_egprs_only) { - f_vty_config2(PCUVTY, {"pcu"}, "egprs only"); - } else { - f_vty_config2(PCUVTY, {"pcu"}, "no egprs"); - } -} - -private function f_init_raw(charstring id, template (value) PCUIF_info_ind info_ind := ts_PCUIF_INFO_default) -runs on RAW_PCU_Test_CT { - var RAW_PCUIF_CT vc_PCUIF; - var RAW_PCU_BTS_CT vc_BTS; - - /* Start the guard timer */ - g_T_guard.start; - activate(as_Tguard_RAW()); - - /* Init PCU interface component */ - vc_PCUIF := RAW_PCUIF_CT.create("PCUIF-" & id); - connect(vc_PCUIF:MTC, self:PCUIF); - map(vc_PCUIF:PCU, system:PCU); - - /* Create one BTS component (we may want more some day) */ - vc_BTS := RAW_PCU_BTS_CT.create("BTS-" & id); - connect(vc_BTS:PCUIF, vc_PCUIF:BTS); - connect(vc_BTS:TC, self:BTS); - - f_init_vty(id); - - vc_PCUIF.start(f_PCUIF_CT_handler(mp_pcu_sock_path)); - vc_BTS.start(f_BTS_CT_handler(0, valueof(info_ind))); - - /* Wait until the BTS is ready (SI13 negotiated) */ - BTS.receive(tr_RAW_PCU_EV(BTS_EV_SI13_NEGO)); -} - -template AckNackDescription t_AckNackDescription_init := { - final_ack := '0'B, - starting_seq_nr := 0, - receive_block_bitmap := '0000000000000000000000000000000000000000000000000000000000000000'B -} - -private function f_rlcmac_dl_block_get_tfi(RlcmacDlBlock dl_block) return uint5_t { - if (ischosen(dl_block.data)) { - return dl_block.data.mac_hdr.hdr_ext.tfi; - } else { - return dl_block.data_egprs.mac_hdr.tfi; - } -} - -/* TS 44.060 sec 12.3 Ack/Nack Description */ -private function f_acknackdesc_ack_block(inout AckNackDescription desc, RlcmacDlBlock dl_block, BIT1 final_ack := '0'B) -{ - var uint7_t bsn; - var integer i; - var integer inc; - - if (ischosen(dl_block.data)) { - bsn := dl_block.data.mac_hdr.hdr_ext.bsn; - } else { - bsn := dl_block.data_egprs.mac_hdr.bsn1; - } - - inc := bsn - desc.starting_seq_nr + 1; - /* Filling hole? */ - if (bsn < desc.starting_seq_nr) { - desc.receive_block_bitmap[lengthof(desc.receive_block_bitmap) - (desc.starting_seq_nr - bsn)] := int2bit(1, 1); - return; - } - - /* SSN is increased, and so RBB values need to be moved */ - for (i := 0; i < lengthof(desc.receive_block_bitmap) - inc; i := i+1) { - desc.receive_block_bitmap[i] := desc.receive_block_bitmap[i + inc]; - } - for (i := lengthof(desc.receive_block_bitmap) - inc; i < lengthof(desc.receive_block_bitmap) - 1; i := i+1) { - desc.receive_block_bitmap[i] := int2bit(0, 1); - } - /* Now we can set current bit and update SSN */ - desc.starting_seq_nr := bsn + 1; - desc.receive_block_bitmap[lengthof(desc.receive_block_bitmap) - 1] := int2bit(1, 1); - - /* Finally update the final_ack bit as requested: */ - desc.final_ack := final_ack; -} - -/* This function can be used to send DATA.cnf in response to the IUT originated DATA.req. - * NOTE: it's the responsibility of caller to make sure that pcu_msg contains u.data_req. */ -private function f_pcuif_tx_data_cnf(in PCUIF_Message pcu_msg) -runs on RAW_PCU_Test_CT { - var PCUIF_Message pcu_msg_cnf := { - msg_type := PCU_IF_MSG_DATA_CNF, - bts_nr := pcu_msg.bts_nr, - spare := pcu_msg.spare, - u := { data_cnf := pcu_msg.u.data_req } - }; - - /* PCU wants DATA.cnf containing basically everything that was in DATA.req, - * but PCU_IF_SAPI_PCH is a special case - paging group shall be excluded. */ - if (pcu_msg.u.data_req.sapi == PCU_IF_SAPI_PCH) { - pcu_msg_cnf.u.data_cnf.data := substr(pcu_msg.u.data_req.data, 3, - pcu_msg.u.data_req.len - 3); - } - - BTS.send(pcu_msg_cnf); -} - -private function f_pcuif_rx_imm_ass(out GsmRrMessage rr_imm_ass, - template PCUIF_Sapi sapi := PCU_IF_SAPI_AGCH, - template GsmRrMessage t_imm_ass := ?, - uint8_t bts_nr := 0) -runs on RAW_PCU_Test_CT return boolean { - var PCUIF_Message pcu_msg; - var octetstring data; - timer T; - - T.start(2.0); - alt { - [] BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := bts_nr, trx_nr := 0, ts_nr := 0, - sapi := sapi, data := ?)) -> value pcu_msg { - /* On PCH the payload is prefixed with paging group (3 octets): skip it. - * TODO: add an additional template parameter, so we can match it. */ - if (pcu_msg.u.data_req.sapi == PCU_IF_SAPI_PCH) { - data := substr(pcu_msg.u.data_req.data, 3, pcu_msg.u.data_req.len - 3); - } else { - data := pcu_msg.u.data_req.data; - } - - rr_imm_ass := dec_GsmRrMessage(data); - if (not match(rr_imm_ass, t_imm_ass)) { - /* Not for us? Wait for more. */ - repeat; - } - - log("Rx Immediate Assignment: ", rr_imm_ass); - setverdict(pass); - return true; - } - [] BTS.receive { repeat; } - [] T.timeout { - setverdict(fail, "Timeout waiting for Immediate Assignment"); - } - } - - return false; -} - -/* FIXME: properly encode RA (see TS 24.060, table 11.2.5.2) */ -private function f_establish_tbf(out GsmRrMessage rr_imm_ass, uint8_t bts_nr := 0, - uint16_t ra := oct2int('3A'O), uint8_t is_11bit := 0, - PCUIF_BurstType burst_type := BURST_TYPE_0, - TimingAdvance ta := 0) -runs on RAW_PCU_Test_CT return boolean { - var uint32_t fn; - - /* FIXME: ask the BTS component to give us the current TDMA fn */ - fn := 1337 + ta; - - /* Send RACH.ind */ - log("Sending RACH.ind on fn=", fn, " with RA=", ra, ", TA=", ta); - BTS.send(ts_PCUIF_RACH_IND(bts_nr := bts_nr, trx_nr := 0, ts_nr := 0, - ra := ra, is_11bit := is_11bit, - burst_type := burst_type, - fn := fn, arfcn := 871, - qta := ta * 4)); - - /* 3GPP TS 44.018, table 9.1.8.1, note 2b: Request Reference shall be set to 127 - * when Immediate Assignment is triggered by EGPRS Packet Channel Request. Here - * we assume that 11 bit RA always contains EGPRS Packet Channel Request. */ - if (is_11bit != 0) { ra := 127; } - - /* Expect Immediate (TBF) Assignment on TS0/AGCH */ - return f_pcuif_rx_imm_ass(rr_imm_ass, PCU_IF_SAPI_AGCH, - tr_IMM_TBF_ASS(?, ra, fn), - bts_nr := bts_nr); -} - -private function f_imm_ass_verify_ul_tbf_ass(GsmRrMessage rr_imm_ass, out PacketUlAssign ul_tbf_ass) -runs on RAW_PCU_Test_CT return boolean { - - /* Make sure we received an UL TBF Assignment */ - if (match(rr_imm_ass, tr_IMM_TBF_ASS(dl := false, rest := tr_IaRestOctets_ULAss(?)))) { - ul_tbf_ass := rr_imm_ass.payload.imm_ass.rest_octets.hh.pa.uldl.ass.ul; - log("Rx Uplink TBF assignment: ", ul_tbf_ass); - setverdict(pass); - } else { - setverdict(fail, "Failed to match UL TBF Assignment"); - return false; - } - - /* Make sure we have got a TBF with Dynamic Block Allocation */ - if (ul_tbf_ass.dynamic == omit) { - setverdict(fail, "Single Block Allocation is not handled by ", testcasename()); - return false; - } - - return true; -} - -private function f_imm_ass_verify_dl_tbf_ass(GsmRrMessage rr_imm_ass, out PacketDlAssign dl_tbf_ass) -runs on RAW_PCU_Test_CT return boolean { - - /* Make sure we received a DL TBF Assignment */ - if (match(rr_imm_ass, tr_IMM_TBF_ASS(dl := true, rest := tr_IaRestOctets_DLAss(?)))) { - dl_tbf_ass := rr_imm_ass.payload.imm_ass.rest_octets.hh.pa.uldl.ass.dl; - log("Rx Downlink TBF assignment: ", dl_tbf_ass); - setverdict(pass); - } else { - setverdict(fail, "Failed to match DL TBF Assignment"); - return false; - } - - return true; -} - -/* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ -private function f_pcuif_tx_data_ind(octetstring data, int16_t lqual_cb := 0, uint32_t fn := 0) -runs on RAW_PCU_Test_CT { - var template RAW_PCU_EventParam ev_param := {tdma_fn := ? }; - BTS.send(ts_PCUIF_DATA_IND(bts_nr := 0, trx_nr := 0, ts_nr := 7, block_nr := 0, - sapi := PCU_IF_SAPI_PDTCH, data := data, - fn := fn, arfcn := 871, lqual_cb := lqual_cb)); - if (fn != 0) { - ev_param := {tdma_fn := fn }; - } - BTS.receive(tr_RAW_PCU_EV(TDMA_EV_PDTCH_BLOCK_SENT, ev_param)); -} - -/* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ -private function f_pcuif_rx_data_req(out PCUIF_Message pcu_msg) -runs on RAW_PCU_Test_CT { - BTS.send(ts_PCUIF_RTS_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, - sapi := PCU_IF_SAPI_PDTCH, fn := 0, - arfcn := 871, block_nr := 0)); - BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, - sapi := PCU_IF_SAPI_PDTCH)) -> value pcu_msg; -} - -/* Expect an Immediate Assignment (paging) from PCU on PCUIF on specified sapi. */ -private function f_pcuif_rx_pch_imm_tbf_ass(out GsmRrMessage rr_imm_ass) -runs on RAW_PCU_Test_CT { - var PCUIF_Message pcu_msg; - var octetstring macblock; - BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 0, - sapi := PCU_IF_SAPI_PCH)) -> value pcu_msg; - /* First 3 bytes contain paging group: */ - macblock := substr(pcu_msg.u.data_req.data, 3, pcu_msg.u.data_req.len - 3); - rr_imm_ass := dec_GsmRrMessage(macblock); - if (not match(rr_imm_ass, tr_IMM_TBF_ASS())) { - setverdict(fail, "Failed to match Immediate Assignment: ", rr_imm_ass); - mtc.stop; - } - f_pcuif_tx_data_cnf(pcu_msg); -} - -/* Expect a Paging Request Type 1 from PCU on PCUIF on specified sapi. */ -private function f_pcuif_rx_pch_pag_req1(template MobileIdentityV mi1 := ?, - template integer pag_group := ?) -runs on RAW_PCU_Test_CT return GsmRrMessage { - var GsmRrMessage rr_pag_req1; - var PCUIF_Message pcu_msg; - var octetstring imsi_suff_octstr; - var integer pag_group_rx; - var octetstring macblock; - - BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 0, - sapi := PCU_IF_SAPI_PCH)) -> value pcu_msg; - - /* First 3 bytes contain IMSI suffix to calculate paging group: */ - imsi_suff_octstr := substr(pcu_msg.u.data_req.data, 0, 3); - pag_group_rx := str2int(oct2char(imsi_suff_octstr[0])) * 100 + - str2int(oct2char(imsi_suff_octstr[1])) * 10 + - str2int(oct2char(imsi_suff_octstr[2])); - - /* Make sure we've got RR Paging Request Type 1 for a given MI */ - macblock := substr(pcu_msg.u.data_req.data, 3, pcu_msg.u.data_req.len - 3); - rr_pag_req1 := dec_GsmRrMessage(macblock); - if (not match(rr_pag_req1, tr_PAG_REQ1(tr_MI_LV(mi1)))) { - setverdict(fail, "Failed to match Paging Request Type 1: ", rr_pag_req1); - mtc.stop; - } - - /* Make sure that received paging froup matches the expected one */ - if (not match(pag_group_rx, pag_group)) { - setverdict(fail, "Paging group", pag_group_rx, " does not match expected ", pag_group); - mtc.stop; - } - - f_pcuif_tx_data_cnf(pcu_msg); - return rr_pag_req1; -} - -private function f_tx_rlcmac_ul_block(template (value) RlcmacUlBlock ul_data, int16_t lqual_cb := 0, uint32_t fn := 0) -runs on RAW_PCU_Test_CT { - var octetstring data; - /* Encode the payload of DATA.ind */ - data := enc_RlcmacUlBlock(valueof(ul_data)); - data := f_pad_oct(data, 23, '00'O); /* CS-1 */ - - /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ - f_pcuif_tx_data_ind(data, lqual_cb, fn); -} - -private function f_tx_rlcmac_ul_n_blocks(PacketUlAssign ul_tbf_ass, integer num_blocks := 1) -runs on RAW_PCU_Test_CT { - var template (value) RlcmacUlBlock ul_data := t_RLCMAC_UL_DATA( - tfi := ul_tbf_ass.dynamic.tfi_assignment, - cv := num_blocks - 1, /* num UL blocks to be sent (to be overridden in loop) */ - bsn := 0, /* TODO: what should be here? */ - blocks := { /* To be generated in loop */ }); - - /* HACK: patch missing TLLI; otherwise OsmoPCU rejects DATA.req */ - ul_data.data.tlli := '00000001'O; - - for (var integer i := 0; i < num_blocks; i := i + 1) { - /* Prepare a new UL block (CV, random payload) */ - ul_data.data.mac_hdr.countdown := (num_blocks - i - 1); - ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; - f_tx_rlcmac_ul_block(ul_data); - } -} - -private function f_rx_rlcmac_dl_block(out RlcmacDlBlock dl_block, out uint32_t dl_fn, template (present) CodingScheme exp_cs_mcs := ?) -runs on RAW_PCU_Test_CT { - var PCUIF_Message pcu_msg; - f_pcuif_rx_data_req(pcu_msg); - dl_block := dec_RlcmacDlBlock(pcu_msg.u.data_req.data); - dl_fn := pcu_msg.u.data_req.fn; - - var integer len := lengthof(pcu_msg.u.data_req.data); - var CodingScheme cs_mcs := f_rlcmac_block_len2cs_mcs(len) - if (not match(f_rlcmac_block_len2cs_mcs(len), exp_cs_mcs)) { - setverdict(fail, "Failed to match Coding Scheme exp ", exp_cs_mcs, " vs ", cs_mcs, " (", len, ")"); - mtc.stop; - } -} - -private function f_rx_rlcmac_dl_block_exp_ack_nack(out RlcmacDlBlock dl_block, out uint32_t poll_fn) -runs on RAW_PCU_Test_CT { - var uint32_t dl_fn; - - f_rx_rlcmac_dl_block(dl_block, dl_fn); - if (not match(dl_block, tr_RLCMAC_UL_ACK_NACK(ul_tfi := ?, tlli := ?))) { - setverdict(fail, "Failed to match Packet Uplink ACK / NACK"); - mtc.stop; - } - - poll_fn := dl_fn + f_rrbp_fn_delay(dl_block.ctrl.mac_hdr.rrbp); -} - -private function f_rx_rlcmac_dl_block_exp_dummy(out RlcmacDlBlock dl_block) -runs on RAW_PCU_Test_CT { - var uint32_t dl_fn; - - f_rx_rlcmac_dl_block(dl_block, dl_fn); - if (not match(dl_block, tr_RLCMAC_DUMMY_CTRL())) { - setverdict(fail, "Failed to match Packet DUMMY DL"); - mtc.stop; - } -} - -private function f_rx_rlcmac_dl_block_exp_pkt_ass(out RlcmacDlBlock dl_block, out uint32_t poll_fn) -runs on RAW_PCU_Test_CT { - var uint32_t dl_fn; - - f_rx_rlcmac_dl_block(dl_block, dl_fn); - if (not match(dl_block, tr_RLCMAC_DL_PACKET_ASS())) { - setverdict(fail, "Failed to match Packet Downlink Assignment"); - mtc.stop; - } - - poll_fn := dl_fn + f_rrbp_fn_delay(dl_block.ctrl.mac_hdr.rrbp); -} - -private function f_rx_rlcmac_dl_block_exp_pkt_ul_ass(out RlcmacDlBlock dl_block, out uint32_t poll_fn) -runs on RAW_PCU_Test_CT { - var uint32_t dl_fn; - - f_rx_rlcmac_dl_block(dl_block, dl_fn); - if (not match(dl_block, tr_RLCMAC_UL_PACKET_ASS())) { - setverdict(fail, "Failed to match Packet Uplink Assignment"); - mtc.stop; - } - - poll_fn := dl_fn + f_rrbp_fn_delay(dl_block.ctrl.mac_hdr.rrbp); -} - - -private function f_rx_rlcmac_dl_block_exp_pkt_pag_req(out RlcmacDlBlock dl_block) -runs on RAW_PCU_Test_CT { - var uint32_t dl_fn; - - f_rx_rlcmac_dl_block(dl_block, dl_fn); - if (not match(dl_block, tr_RLCMAC_PACKET_PAG_REQ())) { - setverdict(fail, "Failed to match Packet Paging Request: ", dl_block, " vs ", tr_RLCMAC_PACKET_PAG_REQ()); - mtc.stop; - } -} - -private function f_rlcmac_dl_block_verify_data_gprs(RlcmacDlBlock dl_block, uint32_t dl_fn, out uint32_t ack_fn, octetstring data, template (present) uint7_t exp_bsn := ?, template (present) CodingScheme exp_cs := ?) -{ - log("verifying dl data block (gprs): ", dl_block); - - ack_fn := dl_fn + f_rrbp_fn_delay(dl_block.data.mac_hdr.mac_hdr.rrbp); - - if (not match(dl_block.data.mac_hdr.hdr_ext.bsn, exp_bsn)) { - setverdict(fail, "DL block BSN doesn't match: ", - dl_block.data.blocks[0].hdr.length_ind, " vs exp ", exp_bsn); - } - - if (lengthof(dl_block.data.blocks) < 1) { - setverdict(fail, "DL block has no LLC payload: ", dl_block); - mtc.stop; - } - - if (ispresent(dl_block.data.blocks[0].hdr) and dl_block.data.blocks[0].hdr.length_ind != lengthof(data)) { - setverdict(fail, "DL block has LLC header with wrong expected size: ", - dl_block.data.blocks[0].hdr.length_ind, " vs ", lengthof(data)); - mtc.stop; - } - - if (dl_block.data.blocks[0].payload != data) { - setverdict(fail, "Failed to match content of LLC payload in DL Block: ", dl_block, " vs ", data); - mtc.stop; - } - - /* Check next data blocks contain dummy frames */ - if (lengthof(dl_block.data.blocks) > 1 and substr(dl_block.data.blocks[1].payload, 0, 3) != '43C001'O) { - setverdict(fail, "Second data payload is not a dummy frame: ", dl_block.data.blocks[1].payload); - mtc.stop; - } - - /* TODO: check exp_cs */ -} - -private function f_rlcmac_dl_block_verify_data_egprs(RlcmacDlBlock dl_block, uint32_t dl_fn, out uint32_t ack_fn, octetstring data, template (present) uint14_t exp_bsn := ?, template (present) CodingScheme exp_cs := ?) -{ - log("verifying dl data block (egprs): ", dl_block); - - ack_fn := dl_fn + f_rrbp_fn_delay(dl_block.data_egprs.mac_hdr.rrbp); - - if (not match(dl_block.data_egprs.mac_hdr.bsn1, exp_bsn)) { - setverdict(fail, "DL block BSN doesn't match: ", - dl_block.data_egprs.blocks[0].hdr.length_ind, " vs exp ", exp_bsn); - } - - if (lengthof(dl_block.data_egprs.blocks) < 1) { - setverdict(fail, "DL block has no LLC payload: ", dl_block); - mtc.stop; - } - - if (ispresent(dl_block.data_egprs.blocks[0].hdr) and dl_block.data_egprs.blocks[0].hdr.length_ind != lengthof(data)) { - setverdict(fail, "DL block has LLC header with wrong expected size: ", - dl_block.data_egprs.blocks[0].hdr.length_ind, " vs ", lengthof(data)); - mtc.stop; - } - - if (dl_block.data_egprs.blocks[0].payload != data) { - setverdict(fail, "Failed to match content of LLC payload in DL Block: ", dl_block, " vs ", data); - mtc.stop; - } - - /* Check next data blocks contain dummy frames */ - if (lengthof(dl_block.data_egprs.blocks) > 1 and substr(dl_block.data_egprs.blocks[1].payload, 0, 3) != '43C001'O) { - setverdict(fail, "Second data payload is not a dummy frame: ", dl_block.data.blocks[1].payload); - mtc.stop; - } - - /* TODO: Check exp_cs. In the case of EGPRS, first check mac_hdr.header_type and then decode CPS = exp_cs based on mac_hdr.header_type. - See wireshark's egprs_Header_type1_coding_puncturing_scheme_to_mcs. */ -} - -private function f_rx_rlcmac_dl_block_exp_data(out RlcmacDlBlock dl_block, out uint32_t ack_fn, octetstring data, template (present) uint7_t exp_bsn := ?, template (present) CodingScheme exp_cs := ?) -runs on RAW_PCU_Test_CT { - var PCUIF_Message pcu_msg; - var uint32_t dl_fn; - var boolean is_egprs := false; - var template RlcmacDlBlock dl_template := tr_RLCMAC_DATA_RRBP; - dl_template.data.blocks := ?; - - f_rx_rlcmac_dl_block(dl_block, dl_fn); - if (not match(dl_block, dl_template)) { - dl_template := tr_RLCMAC_DATA_EGPRS; - dl_template.data_egprs.blocks := ?; - if (not match(dl_block, dl_template)) { - setverdict(fail, "Failed to match Packet data: ", dl_block, " vs ", dl_template); - mtc.stop; - } - is_egprs := true; - } - - if (is_egprs) { - f_rlcmac_dl_block_verify_data_egprs(dl_block, dl_fn, ack_fn, data, exp_bsn, exp_cs); - } else { - f_rlcmac_dl_block_verify_data_gprs(dl_block, dl_fn, ack_fn, data, exp_bsn, exp_cs); - } -} - -testcase TC_pcuif_suspend() runs on RAW_PCU_Test_CT { - var octetstring ra_id := enc_RoutingAreaIdentification(mp_gb_cfg.cell_id.ra_id); - var GprsTlli tlli := 'FFFFFFFF'O; - timer T; - - /* Initialize NS/BSSGP side */ - f_init_bssgp(); - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - /* Establish BSSGP connection to the PCU */ - f_bssgp_establish(); - - BTS.send(ts_PCUIF_SUSP_REQ(0, tlli, ra_id, 0)); - - T.start(2.0); - alt { - [] BSSGP_SIG[0].receive(tr_BSSGP_SUSPEND(tlli, mp_gb_cfg.cell_id.ra_id)) { - setverdict(pass); - } - [] T.timeout { - setverdict(fail, "Timeout waiting for BSSGP SUSPEND"); - } - } -} - -/* Test of correct Timing Advance at the time of TBF establishment - * (derived from timing offset of the Access Burst). */ -testcase TC_ta_rach_imm_ass() runs on RAW_PCU_Test_CT { - var GsmRrMessage rr_msg; - var boolean ok; - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - /* We cannot send too many TBF requests in a short time because - * at some point the PCU will fail to allocate a new TBF. */ - for (var TimingAdvance ta := 0; ta < 64; ta := ta + 16) { - /* Establish an Uplink TBF (send RACH.ind with current TA) */ - ok := f_establish_tbf(rr_msg, bts_nr := 0, ta := ta); - if (not ok) { - setverdict(fail, "Failed to establish an Uplink TBF"); - mtc.stop; - } - - /* Make sure Timing Advance IE matches out expectations */ - if (match(rr_msg, tr_IMM_TBF_ASS(dl := false, ta := ta))) { - setverdict(pass); - } - } -} - -/* Verify Timing Advance value(s) indicated during the packet Downlink assignment - * procedure as per 3GPP TS 44.018, section 3.5.3. There seems to be a bug in the - * IUT that causes it to send an unreasonable Timing Advance value > 0 despite - * no active TBF exists at the moment of establishment (idle mode). */ -testcase TC_ta_idle_dl_tbf_ass() runs on RAW_PCU_Test_CT { - var OCT4 tlli := f_rnd_octstring(4); - var GsmRrMessage rr_imm_ass; - - /* Initialize NS/BSSGP side */ - f_init_bssgp(); - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - /* Establish BSSGP connection to the PCU */ - f_bssgp_establish(); - f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); - - /* SGSN sends some DL data, PCU will initiate Packet Downlink - * Assignment on CCCH (PCH). We don't care about the payload. */ - BSSGP[0].send(ts_BSSGP_DL_UD(tlli, f_rnd_octstring(10))); - f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); // TODO: match by TLLI! - - /* Make sure that Timing Advance is 0 (the actual value is not known yet). - * As per 3GPP S 44.018, section 3.5.3.1.2, the network *shall* initiate - * the procedures defined in 3GPP TS 44.060 or use the polling mechanism. */ - if (not match(rr_imm_ass, tr_IMM_TBF_ASS(ta := 0))) { - setverdict(fail, "Timing Advance value doesn't match"); - mtc.stop; - } -} - -/* Verify that the PCU generates valid PTCCH/D messages - * while neither Uplink nor Downlink TBF is established. */ -testcase TC_ta_ptcch_idle() runs on RAW_PCU_Test_CT { - var PTCCHDownlinkMsg ptcch_msg; - var PCUIF_Message pcu_msg; - timer T; - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - /* Sent an RTS.req for PTCCH/D */ - BTS.send(ts_PCUIF_RTS_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, - sapi := PCU_IF_SAPI_PTCCH, fn := 0, - arfcn := 871, block_nr := 0)); - T.start(5.0); - alt { - [] BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, - sapi := PCU_IF_SAPI_PTCCH)) -> value pcu_msg { - log("Rx DATA.req message: ", pcu_msg); - setverdict(pass); - } - [] BTS.receive(PCUIF_Message:?) { repeat; } - [] T.timeout { - setverdict(fail, "Timeout waiting for a PTCCH/D block"); - mtc.stop; - } - } - - ptcch_msg := dec_PTCCHDownlinkMsg(pcu_msg.u.data_req.data); - log("Decoded PTCCH/D message: ", ptcch_msg); - - /* Make sure the message is encoded correctly - * TODO: do we expect all TA values to be equal '1111111'B? */ - if (not match(ptcch_msg, tr_PTCCHDownlinkMsg)) { - setverdict(fail, "Malformed PTCCH/D message"); - mtc.stop; - } -} - -/* Test of correct Timing Advance during an active Uplink TBF. - * - * Unlike the circuit-switched domain, Uplink transmissions on PDCH time-slots - * are not continuous and there can be long time gaps between them. This happens - * due to a bursty nature of packet data. The actual Timing Advance of a MS may - * significantly change between such rare Uplink transmissions, so GPRS introduces - * additional mechanisms to control Timing Advance, and thus reduce interference - * between neighboring TDMA time-slots. - * - * At the moment of Uplink TBF establishment, initial Timing Advance is measured - * from ToA (Timing of Arrival) of an Access Burst. This is covered by another - * test case - TC_ta_rach_imm_ass. In response to that Access Burst the network - * sends Immediate Assignment on AGCH, which _may_ contain Timing Advance Index - * among with the initial Timing Advance value. And here PTCCH comes to play. - * - * PTCCH is a unidirectional channel on which the network can instruct a sub-set - * of 16 MS (whether TBFs are active or not) to adjust their Timing Advance - * continuously. To ensure continuous measurements of the signal propagation - * delay, the MSs shall transmit Access Bursts on Uplink (PTCCH/U) on sub-slots - * defined by an assigned Timing Advance Index (see 3GPP TS 45.002). - * - * The purpose of this test case is to verify the assignment of Timing Advance - * Index, and the process of Timing Advance notification on PTCCH/D. The MTC - * first establishes several Uplink TBFs, but does not transmit any Uplink - * blocks on them. During 4 TDMA multi-frame periods the MTC is sending RACH - * indications to the PCU, checking the correctness of two received PTCCH/D - * messages (period of PTCCH/D is two multi-frames). - */ - -/* List of ToA values for Access Bursts to be sent on PTCCH/U, - * each ToA (Timing of Arrival) value is in units of 1/4 of - * a symbol (i.e. 1 symbol is 4 QTA units). */ -type record length(16) of int16_t PTCCH_TAI_ToA_MAP; -const PTCCH_TAI_ToA_MAP ptcch_toa_map_def := { - 0, 0, 0, 0, - 0, 0, 0, 0, - 0, 0, 0, 0, - 0, 0, 0, 0 -}; - -private altstep as_ta_ptcch(uint8_t bts_nr := 0, uint8_t trx_nr := 0, uint8_t ts_nr := 7, - in PTCCH_TAI_ToA_MAP toa_map := ptcch_toa_map_def) -runs on RAW_PCU_Test_CT { - var RAW_PCU_Event event; - var integer ss; - - /* Send Access Bursts on PTCCH/U for every TA Index */ - [] BTS.receive(tr_RAW_PCU_EV(TDMA_EV_PTCCH_UL_BURST)) -> value event { - ss := f_tdma_ptcch_fn2ss(event.data.tdma_fn); - if (ss < 0) { mtc.stop; } /* Shall not happen */ - - log("Sending an Access Burst on PTCCH/U", - ", sub-slot=", ss, " (TAI)", - ", fn=", event.data.tdma_fn, - ", ToA=", toa_map[ss], " (QTA)"); - /* TODO: do we care about RA and burst format? */ - BTS.send(ts_PCUIF_RACH_IND(bts_nr, trx_nr, ts_nr, - ra := oct2int('3A'O), - is_11bit := 0, - burst_type := BURST_TYPE_0, - fn := event.data.tdma_fn, - arfcn := 871, - qta := toa_map[ss], - sapi := PCU_IF_SAPI_PTCCH)); - repeat; - } -} - -private function f_TC_ta_ptcch_ul_multi_tbf(in PTCCH_TAI_ToA_MAP ptcch_toa_map, - template PTCCHDownlinkMsg t_ta_msg) -runs on RAW_PCU_Test_CT { - var PTCCHDownlinkMsg ta_msg; - var PCUIF_Message pcu_msg; - timer T; - - /* First, send an RTS.req for the upcoming PTCCH/D block */ - BTS.send(ts_PCUIF_RTS_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, - sapi := PCU_IF_SAPI_PTCCH, fn := 0, - arfcn := 871, block_nr := 0)); - T.start(2.0); - alt { - /* Keep sending of Access Bursts during two multi-frames (period of PTCCH/D) - * with increasing ToA (Timing of Arrival) values: 0, 7, 14, 28, 35... */ - [] as_ta_ptcch(bts_nr := 0, trx_nr := 0, ts_nr := 7, toa_map := ptcch_toa_map); - /* In the end of 2nd multi-frame we should receive a PTCCH/D block */ - [] BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, - sapi := PCU_IF_SAPI_PTCCH)) -> value pcu_msg { - ta_msg := dec_PTCCHDownlinkMsg(pcu_msg.u.data_req.data); - log("Rx PTCCH/D message: ", ta_msg); - - /* Make sure Timing Advance values match our expectations */ - if (match(ta_msg, t_ta_msg)) { - setverdict(pass); - } else { - setverdict(fail, "PTCCH/D message does not match: ", t_ta_msg); - } - } - [] BTS.receive { repeat; } - [] T.timeout { - setverdict(fail, "Timeout waiting for a PTCCH/D block"); - mtc.stop; - } - } -} - -testcase TC_ta_ptcch_ul_multi_tbf() runs on RAW_PCU_Test_CT { - var template PacketUlAssign t_ul_tbf_ass; - var PacketUlAssign ul_tbf_ass[7]; - var GsmRrMessage rr_msg[7]; - var boolean ok; - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - /* Enable forwarding of PTCCH/U TDMA events to us */ - BTS.send(ts_RAW_PCU_CMD(TDMA_CMD_ENABLE_PTCCH_UL_FWD)); - - /* Establish 7 Uplink TBFs (USF flag is 3 bits long, '111'B is reserved) */ - for (var integer i := 0; i < 7; i := i + 1) { - ok := f_establish_tbf(rr_msg[i], ta := 0); - if (not ok) { - setverdict(fail, "Failed to establish an Uplink TBF #", i); - mtc.stop; - } - - /* Make sure we received an UL TBF Assignment */ - if (match(rr_msg[i], tr_IMM_TBF_ASS(dl := false, rest := tr_IaRestOctets_ULAss(?)))) { - ul_tbf_ass[i] := rr_msg[i].payload.imm_ass.rest_octets.hh.pa.uldl.ass.ul; - log("Rx Uplink TBF assignment for #", i, ": ", ul_tbf_ass[i]); - } else { - setverdict(fail, "Failed to match UL TBF Assignment for #", i); - mtc.stop; - } - - /* We expect incremental TFI/USF assignment (dynamic allocation) */ - t_ul_tbf_ass := tr_PacketUlDynAssign(tfi := i, usf := i); - if (not match(ul_tbf_ass[i], t_ul_tbf_ass)) { - setverdict(fail, "Failed to match Packet Uplink Assignment for #", i); - mtc.stop; - } - - /* We also expect Timing Advance Index to be a part of the assignment */ - if (ul_tbf_ass[i].dynamic.ta_index != i) { - setverdict(fail, "Failed to match Timing Advance Index for #", i); - /* Keep going, the current OsmoPCU does not assign TA Index */ - } - } - - /* Prepare a list of ToA values for Access Bursts to be sent on PTCCH/U */ - var PTCCH_TAI_ToA_MAP toa_map := ptcch_toa_map_def; - for (var integer i := 0; i < 7; i := i + 1) { - /* ToA in units of 1/4 of a symbol */ - toa_map[i] := (i + 1) * 7 * 4; - } - - /* Now we have all 7 TBFs established in one-phase access mode, - * however we will not be sending any data on them. Instead, we - * will be sending RACH.ind on PTCCH/U during 4 multi-frame - * periods (TAI 0..8), and then will check two PTCCH/D blocks. - * - * Why not 4 TBFs at once? Because Uplink is delayed by 3 TDMA - * time-slots, so at the moment of scheduling a PTCCH/D block - * the PCU has odd number of PTCCH/U Access Bursts received. */ - f_TC_ta_ptcch_ul_multi_tbf(toa_map, tr_PTCCHDownlinkMsg( - tai0_ta := 7, tai1_ta := 14, tai2_ta := 21, - /* Other values are not known (yet) */ - tai3_ta := ?)); - f_TC_ta_ptcch_ul_multi_tbf(toa_map, tr_PTCCHDownlinkMsg( - tai0_ta := 7, tai1_ta := 14, tai2_ta := 21, - tai3_ta := 28, tai4_ta := 35, tai5_ta := 42, - /* Other values are out of our interest */ - tai6_ta := ?)); -} - -/* Default link quality adaptation (Coding Scheme) ranges (inclusive). - * OsmoPCU (VTY): cs link-quality-ranges cs1 6 cs2 5 8 cs3 7 13 cs4 12 - * - * NOTE: the ranges are intentionally overlapping because OsmoPCU - * does not change CS/MCS on the range borders (5-6, 7-8, 12-13). */ -private template integer CS1_lqual_dB_range := (-infinity .. 6); -private template integer CS2_lqual_dB_range := (5 .. 8); -private template integer CS3_lqual_dB_range := (7 .. 13); -private template integer CS4_lqual_dB_range := (12 .. infinity); - -testcase TC_cs_lqual_ul_tbf() runs on RAW_PCU_Test_CT { - var GsmRrMessage rr_imm_ass; - var PacketUlAssign ul_tbf_ass; - var RlcmacDlBlock dl_block; - var PCUIF_Message pcu_msg; - var octetstring data; - var boolean ok; - var uint32_t unused_fn; - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - f_pcuvty_set_allowed_cs_mcs(); - f_pcuvty_set_link_quality_ranges(); - - /* Establish an Uplink TBF */ - ok := f_establish_tbf(rr_imm_ass); - if (not ok) { - setverdict(fail, "Failed to establish TBF"); - mtc.stop; - } - - ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); - if (not ok) { - setverdict(fail, "Immediate Assignment not an Uplink TBF"); - mtc.stop; - } - - var template (value) RlcmacUlBlock ul_data := t_RLCMAC_UL_DATA( - tfi := ul_tbf_ass.dynamic.tfi_assignment, - cv := 15, /* 16 UL blocks to be sent (to be overridden in loop) */ - bsn := 0, /* TODO: what should be here? */ - blocks := { /* To be generated in loop */ }); - - /* HACK: patch missing TLLI; otherwise OsmoPCU rejects DATA.req */ - ul_data.data.tlli := '00000001'O; - - /* The actual / old link quality values. We need to keep track of the old - * (basically previous) link quality value, because OsmoPCU actually - * changes the coding scheme if not only the actual, but also the old - * value leaves the current link quality range (window). */ - var integer lqual := 0; - var integer lqual_old; - - /* 16 UL blocks (0 .. 15 dB, step = 1 dB) */ - for (var integer i := 0; i < 16; i := i + 1) { - /* Prepare a new UL block (CV, random payload) */ - ul_data.data.mac_hdr.countdown := (15 - i); - ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; - - /* Update the old / actual link quality */ - lqual_old := lqual; - lqual := i; - - /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ - log("Sending DATA.ind with link quality (dB): ", lqual); - f_tx_rlcmac_ul_block(ul_data, lqual * 10); - - /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ - f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); - - log("Rx Packet Uplink ACK / NACK with Channel Coding Command: ", - dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd); - - /* Match the received Channel Coding Command. Since we are increasing - * the link quality value on each iteration and not decreasing, there - * is no need to check the both old and current link quality values. */ - var template ChCodingCommand ch_coding; - select (lqual_old) { - case (CS1_lqual_dB_range) { ch_coding := CH_CODING_CS1; } - case (CS2_lqual_dB_range) { ch_coding := CH_CODING_CS2; } - case (CS3_lqual_dB_range) { ch_coding := CH_CODING_CS3; } - case (CS4_lqual_dB_range) { ch_coding := CH_CODING_CS4; } - } - - if (not match(dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd, ch_coding)) { - setverdict(fail, "Channel Coding does not match our expectations: ", ch_coding); - } else { - setverdict(pass); - } - } -} - -/* Test the max UL CS set by VTY works fine */ -testcase TC_cs_initial_ul() runs on RAW_PCU_Test_CT { - var GsmRrMessage rr_imm_ass; - var PacketUlAssign ul_tbf_ass; - var RlcmacDlBlock dl_block; - var boolean ok; - var integer lqual_cb; - var ChCodingCommand last_ch_coding; - var uint32_t unused_fn; - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - /* Set initial UL CS to 3 */ - g_cs_initial_ul := 3; - f_pcuvty_set_allowed_cs_mcs(); - f_pcuvty_set_link_quality_ranges(); - - /* Take lqual (dB->cB) so that we stay in that CS */ - lqual_cb := g_cs_lqual_ranges[2].low * 10; - - /* Establish an Uplink TBF */ - ok := f_establish_tbf(rr_imm_ass); - if (not ok) { - setverdict(fail, "Failed to establish TBF"); - mtc.stop; - } - - ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); - if (not ok) { - setverdict(fail, "Immediate Assignment not an Uplink TBF"); - mtc.stop; - } - - var template (value) RlcmacUlBlock ul_data := t_RLCMAC_UL_DATA( - tfi := ul_tbf_ass.dynamic.tfi_assignment, - cv := 3, /* 8 UL blocks to be sent (to be overridden in loop) */ - bsn := 0, /* TODO: what should be here? */ - blocks := { /* To be generated in loop */ }); - - /* HACK: patch missing TLLI; otherwise OsmoPCU rejects DATA.req */ - ul_data.data.tlli := '00000001'O; - - /* 3 UL blocks, check we are in same initial CS: */ - for (var integer i := 0; i < 3; i := i + 1) { - /* Prepare a new UL block (CV, random payload) */ - ul_data.data.mac_hdr.countdown := (7 - i); - ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; - - /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ - f_tx_rlcmac_ul_block(ul_data, lqual_cb); - - /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ - f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); - last_ch_coding := dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd; - } - - if (last_ch_coding != CH_CODING_CS3) { - setverdict(fail, "Channel Coding does not match our expectations (CS-3): ", last_ch_coding); - mtc.stop; - } - - setverdict(pass); - - /* Remaining UL blocks are used to make sure regardless of initial - /* lqual, we can go lower at any time */ - - /* 5 UL blocks, check we are in same initial CS: */ - for (var integer i := 3; i < 8; i := i + 1) { - /* Prepare a new UL block (CV, random payload) */ - ul_data.data.mac_hdr.countdown := (7 - i); - ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; - - /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ - f_tx_rlcmac_ul_block(ul_data, 0); /* 0 dB, make sure we downgrade CS */ - - /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ - f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); - - last_ch_coding := dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd; - } - - if (last_ch_coding != CH_CODING_CS1) { - setverdict(fail, "Channel Coding does not match our expectations (CS-1): ", last_ch_coding); - } else { - setverdict(pass); - } -} - -/* Test the max UL CS set by VTY works fine */ -testcase TC_cs_max_ul() runs on RAW_PCU_Test_CT { - var GsmRrMessage rr_imm_ass; - var PacketUlAssign ul_tbf_ass; - var RlcmacDlBlock dl_block; - var boolean ok; - var ChCodingCommand last_ch_coding; - var uint32_t unused_fn; - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - /* Set maximum allowed UL CS to 3 */ - g_cs_max_ul := 3; - f_pcuvty_set_allowed_cs_mcs(); - f_pcuvty_set_link_quality_ranges(); - - /* Establish an Uplink TBF */ - ok := f_establish_tbf(rr_imm_ass); - if (not ok) { - setverdict(fail, "Failed to establish TBF"); - mtc.stop; - } - - ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); - if (not ok) { - setverdict(fail, "Immediate Assignment not an Uplink TBF"); - mtc.stop; - } - - var template (value) RlcmacUlBlock ul_data := t_RLCMAC_UL_DATA( - tfi := ul_tbf_ass.dynamic.tfi_assignment, - cv := 15, /* 16 UL blocks to be sent (to be overridden in loop) */ - bsn := 0, /* TODO: what should be here? */ - blocks := { /* To be generated in loop */ }); - - /* HACK: patch missing TLLI; otherwise OsmoPCU rejects DATA.req */ - ul_data.data.tlli := '00000001'O; - - /* 16 UL blocks */ - for (var integer i := 0; i < 16; i := i + 1) { - /* Prepare a new UL block (CV, random payload) */ - ul_data.data.mac_hdr.countdown := (15 - i); - ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; - - /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ - f_tx_rlcmac_ul_block(ul_data, 40*10); /* 40 dB */ - - /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ - f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); - - last_ch_coding := dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd; - } - - if (last_ch_coding != CH_CODING_CS3) { - setverdict(fail, "Channel Coding does not match our expectations (CS-3): ", last_ch_coding); - } else { - setverdict(pass); - } -} - -/* Verify PCU drops TBF after some time of inactivity. */ -testcase TC_t3169() runs on RAW_PCU_Test_CT { - var PCUIF_info_ind info_ind; - var GsmRrMessage rr_imm_ass; - var PacketUlAssign ul_tbf_ass; - var RlcmacDlBlock dl_block; - var PCUIF_Message pcu_msg; - var octetstring data; - var boolean ok; - var uint32_t unused_fn; - var OCT4 tlli := '00000001'O; - - /* Initialize NS/BSSGP side */ - f_init_bssgp(); - - info_ind := valueof(ts_PCUIF_INFO_default); - /* Set timer to 1 sec (default 5) to speedup test: */ - info_ind.t3169 := 1; - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename(), info_ind); - - /* Establish BSSGP connection to the PCU */ - f_bssgp_establish(); - f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); - - /* Establish an Uplink TBF */ - ok := f_establish_tbf(rr_imm_ass); - if (not ok) { - setverdict(fail, "Failed to establish TBF"); - mtc.stop; - } - - ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); - if (not ok) { - setverdict(fail, "Immediate Assignment not an Uplink TBF"); - mtc.stop; - } - - /* Send one UL block and make sure it is ACKED fine */ - f_tx_rlcmac_ul_n_blocks(ul_tbf_ass, 1); - f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); - /* UL block should be received in SGSN */ - BSSGP[0].receive(tr_BSSGP_UL_UD(tlli, mp_gb_cfg.cell_id)); - - /* Wait until T3169 fires (plus 1 extra sec to make sure) */ - f_sleep(int2float(info_ind.t3169) + 1.0); - - /* Send an UL block once again, the TBF should be gone by now so no ACK */ - f_tx_rlcmac_ul_n_blocks(ul_tbf_ass, 1); - f_rx_rlcmac_dl_block_exp_dummy(dl_block); -} - -/* Verify that a Downlink TBF can be assigned using PACCH shortly after the - * release of prev DL TBF due to MS staying in PDCH for a while (T3192, in PCU - * T3193) after DL TBF release */ -testcase TC_t3193() runs on RAW_PCU_Test_CT { - var GsmRrMessage rr_imm_ass; - var PacketDlAssign dl_tbf_ass; - var RlcmacDlBlock dl_block; - var octetstring data := f_rnd_octstring(10); - var boolean ok; - var uint32_t sched_fn; - var OCT4 tlli := '00000001'O; - var AckNackDescription ack_nack_desc := valueof(t_AckNackDescription_init); - - /* Initialize NS/BSSGP side */ - f_init_bssgp(); - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - /* Establish BSSGP connection to the PCU */ - f_bssgp_establish(); - f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); - - /* SGSN sends some DL data, PCU will page on CCCH (PCH) */ - BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data)); - f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); - ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); - if (not ok) { - setverdict(fail, "Immediate Assignment not a Downlink TBF"); - mtc.stop; - } - /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ - f_sleep(X2002); - f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0); - - /* ACK the DL block */ - f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); - f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); - /* we are done with the DL-TBF here so far, let's clean up our local state: */ - ack_nack_desc := valueof(t_AckNackDescription_init) - - /* Now that final DL block is ACKED and TBF is released, T3193 in PCU - (T3192 in MS) was started and until it fires the MS will be abailable - on PDCH in case new data arrives from SGSN. Let's verify it: */ - BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data)); - f_rx_rlcmac_dl_block_exp_pkt_ass(dl_block, sched_fn); - f_tx_rlcmac_ul_block(ts_RLCMAC_CTRL_ACK(tlli), 0, sched_fn); - - /* Now that we confirmed the new assignment in the dl-tbf, lets receive the data and ack it */ - f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0); - f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); - f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); -} - -/* Test scenario where MS wants to send some data on PDCH against SGSN and it is - * answered, so TBFs for uplink and later for downlink are created. - */ -private function f_TC_mo_ping_pong(template (omit) MSRadioAccessCapabilityV ms_racap := omit, template (present) CodingScheme exp_cs_mcs := ?) runs on RAW_PCU_Test_CT { - var GsmRrMessage rr_imm_ass; - var PacketUlAssign ul_tbf_ass; - var PacketDlAssign dl_tbf_ass; - var RlcmacDlBlock dl_block; - var PCUIF_Message pcu_msg; - var octetstring data := f_rnd_octstring(10); - var boolean ok; - var uint32_t sched_fn; - var OCT4 tlli := '00000001'O; - var AckNackDescription ack_nack_desc := valueof(t_AckNackDescription_init); - - /* Initialize NS/BSSGP side */ - f_init_bssgp(); - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - /* Establish BSSGP connection to the PCU */ - f_bssgp_establish(); - f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); - - /* Establish an Uplink TBF */ - ok := f_establish_tbf(rr_imm_ass); - if (not ok) { - setverdict(fail, "Failed to establish TBF"); - mtc.stop; - } - ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); - if (not ok) { - setverdict(fail, "Immediate Assignment not an Uplink TBF"); - mtc.stop; - } - - if (not istemplatekind(ms_racap, "omit")) { - /* Send PACKET RESOURCE REQUEST to upgrade to EGPRS - * (see 3GPP TS 04.60 "7.1.3.1 Initiation of the Packet resource request procedure") - */ - f_tx_rlcmac_ul_block(ts_RLC_UL_CTRL_ACK(valueof(ts_RlcMacUlCtrl_PKT_RES_REQ(tlli, ms_racap))), 0); - f_rx_rlcmac_dl_block_exp_pkt_ul_ass(dl_block, sched_fn); - if (dl_block.ctrl.payload.u.ul_assignment.identity.tlli.tlli != tlli) { - setverdict(fail, "Wrong TLLI ", dl_block.ctrl.payload.u.ul_assignment.identity.tlli, " received vs exp ", tlli); - mtc.stop; - } - } - - /* Send one UL block and make sure it is ACKED fine */ - f_tx_rlcmac_ul_n_blocks(ul_tbf_ass, 1); - f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, sched_fn); - /* DL ACK/NACK sets poll+rrbp requesting PACKET CONTROL ACK */ - f_tx_rlcmac_ul_block(ts_RLCMAC_CTRL_ACK(tlli), 0, sched_fn); - - /* UL block should be received in SGSN */ - BSSGP[0].receive(tr_BSSGP_UL_UD(tlli, mp_gb_cfg.cell_id)); - - /* Now SGSN sends some DL data, PCU will page on CCCH (PCH) */ - BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data)); - f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); - - ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); - if (not ok) { - setverdict(fail, "Immediate Assignment not a Downlink TBF"); - mtc.stop; - } - - /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ - f_sleep(X2002); - f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0, exp_cs_mcs); - - /* ACK the DL block */ - f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); - f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); -} - -/* Test scenario where MS wants to send some data on PDCH against SGSN and it is - * answered, so TBFs for uplink and later for downlink are created. - */ -testcase TC_mo_ping_pong() runs on RAW_PCU_Test_CT { - var CodingScheme exp_cs_mcs := CS_1; - f_TC_mo_ping_pong(omit, exp_cs_mcs); -} - - -testcase TC_mo_ping_pong_with_ul_racap() runs on RAW_PCU_Test_CT { - var MultislotCap_GPRS mscap_gprs := { - gprsmultislotclass := '00011'B, - gprsextendeddynalloccap := '0'B - }; - var MSRadioAccessCapabilityV ms_racap := { valueof(ts_RaCapRec('0001'B /* E-GSM */, mscap_gprs, omit)) }; - var CodingScheme exp_cs_mcs := CS_2; - - f_TC_mo_ping_pong(ms_racap, exp_cs_mcs); -} - -/* Test scenario where SGSN wants to send some data against MS and it is - * answered by the MS on PDCH, so TBFs for downlink and later for uplink are created. - */ -private function f_TC_mt_ping_pong(template (omit) MSRadioAccessCapabilityV_BSSGP ms_racap := omit, template (present) CodingScheme exp_cs_mcs := ?) runs on RAW_PCU_Test_CT { - var GsmRrMessage rr_imm_ass; - var PacketUlAssign ul_tbf_ass; - var PacketDlAssign dl_tbf_ass; - var RlcmacDlBlock dl_block; - var PCUIF_Message pcu_msg; - var octetstring data := f_rnd_octstring(10); - var boolean ok; - var uint32_t sched_fn; - var OCT4 tlli := '00000001'O; - var AckNackDescription ack_nack_desc := valueof(t_AckNackDescription_init); - - /* Initialize NS/BSSGP side */ - f_init_bssgp(); - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - /* Establish BSSGP connection to the PCU */ - f_bssgp_establish(); - f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); - - /* SGSN sends some DL data, PCU will page on CCCH (PCH) */ - BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data, ms_racap)); - f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); - - ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); - if (not ok) { - setverdict(fail, "Immediate Assignment not a Downlink TBF"); - mtc.stop; - } - - /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ - f_sleep(X2002); - f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0, exp_cs_mcs); - - /* ACK the DL block */ - f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); - f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); - - /* Now MS wants to answer the DL data, Establish an Uplink TBF */ - ok := f_establish_tbf(rr_imm_ass); - if (not ok) { - setverdict(fail, "Failed to establish TBF"); - mtc.stop; - } - ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); - if (not ok) { - setverdict(fail, "Immediate Assignment not an Uplink TBF"); - mtc.stop; - } - - /* Send one UL block and make sure it is ACKED fine */ - f_tx_rlcmac_ul_n_blocks(ul_tbf_ass, 1); - f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, sched_fn); - /* DL ACK/NACK sets poll+rrbp requesting PACKET CONTROL ACK */ - f_tx_rlcmac_ul_block(ts_RLCMAC_CTRL_ACK(tlli), 0, sched_fn); - - /* UL block should be received in SGSN */ - BSSGP[0].receive(tr_BSSGP_UL_UD(tlli, mp_gb_cfg.cell_id)); -} - -testcase TC_mt_ping_pong() runs on RAW_PCU_Test_CT { - var CodingScheme exp_cs_mcs := CS_1; - f_TC_mt_ping_pong(omit, exp_cs_mcs); -} - -/* TC_mt_ping_pong, but DL-UNITDATA contains RA Access capability with (M)CS -/* information about the MS */ -testcase TC_mt_ping_pong_with_dl_racap() runs on RAW_PCU_Test_CT { - var MultislotCap_GPRS_BSSGP mscap_gprs := { - gprsmultislotclass := '00011'B, - gprsextendeddynalloccap := '0'B - } ; - var MSRadioAccessCapabilityV_BSSGP ms_racap := { valueof(ts_RaCapRec_BSSGP('0001'B /* E-GSM */, mscap_gprs, omit)) }; - var CodingScheme exp_cs_mcs := CS_2; - f_TC_mt_ping_pong(ms_racap, exp_cs_mcs); -} - -/* Verify that if PCU doesn't get an ACK for first DL block after IMM ASS, it - * will retry by retransmitting both the IMM ASS + DL block after poll (ack) - * timeout occurs (specified by sent RRBP on DL block). */ -testcase TC_imm_ass_dl_block_retrans() runs on RAW_PCU_Test_CT { - var GsmRrMessage rr_imm_ass; - var PacketDlAssign dl_tbf_ass; - var RlcmacDlBlock dl_block; - var octetstring data := f_rnd_octstring(10); - var boolean ok; - var uint32_t sched_fn; - var OCT4 tlli := '00000001'O; - var AckNackDescription ack_nack_desc := valueof(t_AckNackDescription_init); - - /* Initialize NS/BSSGP side */ - f_init_bssgp(); - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - /* Establish BSSGP connection to the PCU */ - f_bssgp_establish(); - f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); - - /* SGSN sends some DL data, PCU will page on CCCH (PCH) */ - BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data)); - f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); - ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); - if (not ok) { - setverdict(fail, "Immediate Assignment not a Downlink TBF"); - mtc.stop; - } - - /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ - f_sleep(X2002); - f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0); - - /* Now we don't ack the dl block (emulate MS failed receiveing IMM ASS - * or GPRS DL, or DL ACK was lost for some reason). As a result, PCU - * should retrigger IMM ASS + GPRS DL procedure after poll timeout. */ - f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); - ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); - if (not ok) { - setverdict(fail, "Immediate Assignment not a Downlink TBF"); - mtc.stop; - } - /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ - f_sleep(X2002); - f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0); - - /* ACK the DL block */ - f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); - f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); -} - -private function f_pkt_paging_match_imsi(in PacketPagingReq req, hexstring imsi) { - var MobileIdentityLV_Paging mi_lv := req.repeated_pageinfo.cs.mobile_identity; - var MobileIdentityV mi := dec_MobileIdentityV(mi_lv.mobile_id); - - if (mi_lv.len != 8) { /* 8 octets: type of ID (3 bits) + even/odd flag (1 bit) + 15 BCD-encoded digits (60 bits) */ - setverdict(fail, "Mobile Identity length mismatch: ", - "expected: 8, got: ", mi_lv.len); - mtc.stop; - } - - /* Make sure MI contains IMSI before referencing it */ - if (mi.typeOfIdentity != '001'B) { - setverdict(fail, "Mobile Identity must be of type IMSI ('001'B), ", - "got: ", mi.typeOfIdentity); - mtc.stop; - } else if (mi.oddEvenInd_identity.imsi.digits != imsi) { - setverdict(fail, "Mobile Identity contains unexpected IMSI, ", - "expected: ", imsi, " got: ", mi.oddEvenInd_identity.imsi.digits); - mtc.stop; - } -} - -private function f_pkt_paging_match_tmsi(in PacketPagingReq req, template GsmTmsi tmsi) { - if (not match(req.repeated_pageinfo.cs.tmsi, tmsi)) { - setverdict(fail, "Mobile Identity (TMSI/P-TMSI) mismatch: ", - "expected: ", tmsi, "got: ", req.repeated_pageinfo.cs.tmsi); - mtc.stop; - } -} - -/* Test CS paging over the BTS<->PCU socket. - * When a (class B or C, not A) MS has an active TBF (or is on the PDCH), the MS can not react on CS paging over CCCH. - * Paging should be send on the PACCH. - * - * 1. Send a Paging Request over PCU socket. - * 2. Send a Ready-To-Send message over PCU socket - * 3. Expect a Paging Frame - */ -testcase TC_paging_cs_from_bts() runs on RAW_PCU_Test_CT { - var GsmRrMessage rr_imm_ass; - var PacketUlAssign ul_tbf_ass; - var RlcmacDlBlock dl_block; - var boolean ok; - var OCT4 tlli := '00000001'O; - var MobileIdentityLV mi; - var octetstring mi_enc_lv; - var hexstring imsi := f_gen_imsi(42); - - /* Initialize NS/BSSGP side */ - f_init_bssgp(); - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - /* Establish BSSGP connection to the PCU */ - f_bssgp_establish(); - f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); - - /* Establish an Uplink TBF */ - ok := f_establish_tbf(rr_imm_ass); - if (not ok) { - setverdict(fail, "Failed to establish TBF"); - mtc.stop; - } - - ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); - if (not ok) { - setverdict(fail, "Immediate Assignment not an Uplink TBF"); - mtc.stop; - } - - - /* build mobile Identity */ - mi := valueof(ts_MI_IMSI_LV(imsi)); - mi_enc_lv := enc_MobileIdentityLV(mi); - /* Send paging request */ - BTS.send(ts_PCUIF_PAG_REQ(bts_nr := 0, id_lv := mi_enc_lv, chan_needed := 0, - sapi :=PCU_IF_SAPI_PDTCH)); - - /* Receive it on BTS side towards MS */ - f_rx_rlcmac_dl_block_exp_pkt_pag_req(dl_block); - - /* Make sure that Packet Paging Request contains the same IMSI */ - f_pkt_paging_match_imsi(dl_block.ctrl.payload.u.paging, imsi); - - setverdict(pass); -} - -/* Test CS paging over Gb (SGSN->PCU->BTS[PDCH]). - */ -private function f_tc_paging_cs_from_sgsn(Nsvci bvci, boolean use_ptmsi := false) -runs on RAW_PCU_Test_CT { - var GsmRrMessage rr_imm_ass; - var PacketUlAssign ul_tbf_ass; - var RlcmacDlBlock dl_block; - var boolean ok; - var OCT4 tlli := '00000001'O; - var hexstring imsi := f_gen_imsi(42); - var GsmTmsi tmsi; - - /* Initialize NS/BSSGP side */ - f_init_bssgp(); - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - /* Establish BSSGP connection to the PCU */ - f_bssgp_establish(); - f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); - - /* Establish an Uplink TBF */ - ok := f_establish_tbf(rr_imm_ass); - if (not ok) { - setverdict(fail, "Failed to establish TBF"); - mtc.stop; - } - - ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); - if (not ok) { - setverdict(fail, "Immediate Assignment not an Uplink TBF"); - mtc.stop; - } - - /* Send paging request with or without TMSI */ - if (use_ptmsi) { - tmsi := oct2int(f_rnd_octstring(4)); /* Random P-TMSI */ - BSSGP[0].send(ts_BSSGP_CS_PAGING_PTMSI(bvci, imsi, tmsi)); - } else { - BSSGP[0].send(ts_BSSGP_CS_PAGING_IMSI(bvci, imsi)); - } - - /* Receive it on BTS side towards MS */ - f_rx_rlcmac_dl_block_exp_pkt_pag_req(dl_block); - - /* Make sure that Packet Paging Request contains the same P-TMSI/IMSI */ - if (use_ptmsi) { - f_pkt_paging_match_tmsi(dl_block.ctrl.payload.u.paging, tmsi); - } else { - f_pkt_paging_match_imsi(dl_block.ctrl.payload.u.paging, imsi); - } - - setverdict(pass); -} - -testcase TC_paging_cs_from_sgsn_sign_ptmsi() runs on RAW_PCU_Test_CT { - f_tc_paging_cs_from_sgsn(0, true); -} - -testcase TC_paging_cs_from_sgsn_sign() runs on RAW_PCU_Test_CT { - f_tc_paging_cs_from_sgsn(0); -} - -testcase TC_paging_cs_from_sgsn_ptp() runs on RAW_PCU_Test_CT { - f_tc_paging_cs_from_sgsn(mp_gb_cfg.bvci); -} - -/* Test PS paging over Gb (SGSN->PCU->BTS[CCCH]). - */ -private function f_tc_paging_ps_from_sgsn(Nsvci bvci, boolean use_ptmsi := false) -runs on RAW_PCU_Test_CT { - var OCT4 tlli := '00000001'O; - var integer imsi_suff_tx := 423; - var hexstring imsi := f_gen_imsi(imsi_suff_tx); - - /* Initialize NS/BSSGP side */ - f_init_bssgp(); - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - /* Establish BSSGP connection to the PCU */ - f_bssgp_establish(); - f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); - - /* Send BSSGP PAGING-PS (with or without TMSI), wait for RR Paging Request Type 1. - * Make sure that both paging group (IMSI suffix) and Mobile Identity match. */ - if (use_ptmsi) { - var OCT4 tmsi := f_rnd_octstring(4); /* Random P-TMSI */ - BSSGP[0].send(ts_BSSGP_PS_PAGING_PTMSI(bvci, imsi, oct2int(tmsi))); - f_pcuif_rx_pch_pag_req1(t_MI_TMSI(tmsi), imsi_suff_tx); - } else { - BSSGP[0].send(ts_BSSGP_PS_PAGING_IMSI(bvci, imsi)); - f_pcuif_rx_pch_pag_req1(tr_MI_IMSI(imsi), imsi_suff_tx); - } - - setverdict(pass); -} - -testcase TC_paging_ps_from_sgsn_sign_ptmsi() runs on RAW_PCU_Test_CT { - f_tc_paging_ps_from_sgsn(0, true); -} - -testcase TC_paging_ps_from_sgsn_sign() runs on RAW_PCU_Test_CT { - f_tc_paging_ps_from_sgsn(0); -} - -testcase TC_paging_ps_from_sgsn_ptp() runs on RAW_PCU_Test_CT { - f_tc_paging_ps_from_sgsn(mp_gb_cfg.bvci); -} - -private function f_TC_egprs_pkt_chan_req(in EGPRSPktChRequest req, - template GsmRrMessage t_imm_ass := ?, - PCUIF_BurstType bt := BURST_TYPE_1) -runs on RAW_PCU_Test_CT { - var GsmRrMessage rr_msg; - var uint16_t ra11; - var boolean ok; - - ra11 := enc_EGPRSPktChRequest2uint(req); - log("Sending EGPRS Packet Channel Request (", ra11, "): ", req); - - ok := f_establish_tbf(rr_msg, ra := ra11, is_11bit := 1, burst_type := bt); - if (not ok) { - setverdict(fail, "Failed to establush an Uplink TBF"); - mtc.stop; - } - - if (not match(rr_msg, t_imm_ass)) { - setverdict(fail, "Immediate Assignment does not match"); - mtc.stop; - } - - setverdict(pass); -} - -testcase TC_egprs_pkt_chan_req_signalling() runs on RAW_PCU_Test_CT { - var template GsmRrMessage imm_ass; - var template IaRestOctets rest; - var template EgprsUlAss ul_ass; - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - var EGPRSPktChRequest req := { - /* NOTE: other fields are set in the loop */ - signalling := { tag := '110011'B } - }; - - for (var integer i := 0; i < 6; i := i + 1) { - var BIT5 ext_ra := int2bit(f_rnd_int(32), 5); - req.signalling.random_bits := ext_ra; - - /* For signalling, do we expect Multiblock UL TBF Assignment? */ - ul_ass := tr_EgprsUlAssMultiblock(ext_ra := ext_ra); - rest := tr_IaRestOctets_EGPRSULAss(ul_ass); - imm_ass := tr_IMM_TBF_ASS(dl := false, rest := rest); - - f_TC_egprs_pkt_chan_req(req, imm_ass); - } -} - -testcase TC_egprs_pkt_chan_req_one_phase() runs on RAW_PCU_Test_CT { - var template GsmRrMessage imm_ass; - var template IaRestOctets rest; - var template EgprsUlAss ul_ass; - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - var EGPRSPktChRequest req := { - /* NOTE: other fields are set in the loop */ - one_phase := { tag := '0'B } - }; - - for (var integer i := 0; i < 6; i := i + 1) { - var BIT5 ext_ra := int2bit(f_rnd_int(32), 5); - var BIT5 mslot_class := int2bit(f_rnd_int(32), 5); - var BIT2 priority := substr(ext_ra, 0, 2); - var BIT3 rand := substr(ext_ra, 2, 3); - - req.one_phase.multislot_class := mslot_class; - req.one_phase.priority := priority; - req.one_phase.random_bits := rand; - - /* For one phase access, do we expect Dynamic UL TBF Assignment? */ - ul_ass := tr_EgprsUlAssDynamic(ext_ra := ext_ra); - rest := tr_IaRestOctets_EGPRSULAss(ul_ass); - imm_ass := tr_IMM_TBF_ASS(dl := false, rest := rest); - - f_TC_egprs_pkt_chan_req(req, imm_ass); - } -} - -testcase TC_egprs_pkt_chan_req_two_phase() runs on RAW_PCU_Test_CT { - var template GsmRrMessage imm_ass; - var template IaRestOctets rest; - var template EgprsUlAss ul_ass; - - /* Initialize the PCU interface abstraction */ - f_init_raw(testcasename()); - - var EGPRSPktChRequest req := { - /* NOTE: other fields are set in the loop */ - two_phase := { tag := '110000'B } - }; - - for (var integer i := 0; i < 6; i := i + 1) { - var BIT5 ext_ra := int2bit(f_rnd_int(32), 5); - var BIT2 priority := substr(ext_ra, 0, 2); - var BIT3 rand := substr(ext_ra, 2, 3); - - req.two_phase.priority := priority; - req.two_phase.random_bits := rand; - - /* For two phase access, do we expect Multiblock UL TBF Assignment? */ - ul_ass := tr_EgprsUlAssMultiblock(ext_ra := ext_ra); - rest := tr_IaRestOctets_EGPRSULAss(ul_ass); - imm_ass := tr_IMM_TBF_ASS(dl := false, rest := rest); - - f_TC_egprs_pkt_chan_req(req, imm_ass); - } -} - -control { - execute( TC_pcuif_suspend() ); - execute( TC_ta_ptcch_idle() ); - execute( TC_ta_rach_imm_ass() ); - execute( TC_ta_idle_dl_tbf_ass() ); - execute( TC_ta_ptcch_ul_multi_tbf() ); - execute( TC_cs_lqual_ul_tbf() ); - execute( TC_cs_initial_ul() ); - execute( TC_cs_max_ul() ); - execute( TC_t3169() ); - execute( TC_t3193() ); - execute( TC_mo_ping_pong() ); - execute( TC_mo_ping_pong_with_ul_racap() ); - execute( TC_mt_ping_pong() ); - execute( TC_mt_ping_pong_with_dl_racap() ); - execute( TC_imm_ass_dl_block_retrans() ); - execute( TC_paging_cs_from_bts() ); - execute( TC_paging_cs_from_sgsn_sign_ptmsi() ); - execute( TC_paging_cs_from_sgsn_sign() ); - execute( TC_paging_cs_from_sgsn_ptp() ); - execute( TC_paging_ps_from_sgsn_sign_ptmsi() ); - execute( TC_paging_ps_from_sgsn_sign() ); - execute( TC_paging_ps_from_sgsn_ptp() ); - - /* EGPRS specific test cases */ - execute( TC_egprs_pkt_chan_req_signalling() ); - execute( TC_egprs_pkt_chan_req_one_phase() ); - execute( TC_egprs_pkt_chan_req_two_phase() ); -} - - - - - - -} diff --git a/pcu/PCU_Tests_SNS.cfg b/pcu/PCU_Tests_SNS.cfg index 0368f36fe..022f91c53 100644 --- a/pcu/PCU_Tests_SNS.cfg +++ b/pcu/PCU_Tests_SNS.cfg @@ -21,4 +21,4 @@ SGSN_Components.mp_nsconfig := { [MAIN_CONTROLLER] [EXECUTE] -PCU_Tests_RAW_SNS.control +PCU_Tests_SNS.control diff --git a/pcu/PCU_Tests_RAW_SNS.ttcn b/pcu/PCU_Tests_SNS.ttcn similarity index 99% rename from pcu/PCU_Tests_RAW_SNS.ttcn rename to pcu/PCU_Tests_SNS.ttcn index 1690ad48d..fc98979dc 100644 --- a/pcu/PCU_Tests_RAW_SNS.ttcn +++ b/pcu/PCU_Tests_SNS.ttcn @@ -1,4 +1,4 @@ -module PCU_Tests_RAW_SNS { +module PCU_Tests_SNS { /* Osmocom PCU test suite for IP Sub-Network-Service (SNS) in TTCN-3 * (C) 2018-2019 Harald Welte @@ -11,7 +11,7 @@ module PCU_Tests_RAW_SNS { */ import from Osmocom_Types all; -import from PCU_Tests_RAW_NS all; +import from PCU_Tests_NS all; import from SGSN_Components all; import from Osmocom_Gb_Types all; import from NS_CodecPort all; diff --git a/pcu/README.md b/pcu/README.md index a71141021..a2e439a57 100644 --- a/pcu/README.md +++ b/pcu/README.md @@ -1,4 +1,4 @@ -# PCU_Tests_RAW.ttcn +# PCU_Tests.ttcn * external interfaces * Gb (emulates SGSN side NS/BSSGP)