347 lines
8.0 KiB
Plaintext
347 lines
8.0 KiB
Plaintext
/* TITAN REW encode/decode definitions for 3GPP TS 44.060 RLC/MAC Blocks */
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/* (C) 2017-2018 Harald Welte <laforge@gnumonks.org>
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* (C) 2020 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
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* All rights reserved.
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*
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* Released under the terms of GNU General Public License, Version 2 or
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* (at your option) any later version.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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module RLCMAC_Templates {
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import from General_Types all;
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import from Osmocom_Types all;
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import from GSM_Types all;
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import from RLCMAC_CSN1_Types all;
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import from RLCMAC_CSN1_Templates all;
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import from RLCMAC_Types all;
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/* TS 44.060 10.4.5 */
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function f_rrbp_fn_delay(MacRrbp rrbp) return uint32_t {
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select (rrbp) {
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case (RRBP_Nplus13_mod_2715648) { return 13; }
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case (RRBP_Nplus17_or_18_mod_2715648) { return 17; }
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case (RRBP_Nplus21_or_22_mod_2715648) { return 21; }
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case (RRBP_Nplus26_mod_2715648) { return 26; }
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}
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return 0;
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}
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function f_rlcmac_cs_mcs2block_len(CodingScheme cs_mcs) return uint32_t {
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select (cs_mcs) {
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case (CS_1) { return 23; }
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case (CS_2) { return 34; }
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case (CS_3) { return 40; }
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case (CS_4) { return 54; }
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case (MCS_1) { return 27; }
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case (MCS_2) { return 33; }
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case (MCS_3) { return 42; }
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case (MCS_4) { return 49; }
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case (MCS_5) { return 61; }
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case (MCS_6) { return 79; }
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case (MCS_7) { return 119; }
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case (MCS_8) { return 143; }
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case (MCS_9) { return 155; }
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}
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return 0;
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}
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function f_rlcmac_block_len2cs_mcs(uint32_t len) return CodingScheme {
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select (len) {
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case (23) { return CS_1; }
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case (34) { return CS_2; }
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case (40) { return CS_3; }
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case (54) { return CS_4; }
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case (27) { return MCS_1; }
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case (33) { return MCS_2; }
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case (42) { return MCS_3; }
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case (49) { return MCS_4; }
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case (60) { return MCS_5; }
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case (61) { return MCS_5; }
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case (78) { return MCS_6; }
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case (79) { return MCS_6; }
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case (118) { return MCS_7; }
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case (119) { return MCS_7; }
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case (142) { return MCS_8; }
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case (143) { return MCS_8; }
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case (154) { return MCS_9; }
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case (155) { return MCS_9; }
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}
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return CS_1;
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}
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template (value) RlcmacUlBlock ts_RLC_UL_CTRL_ACK(RlcmacUlCtrlMsg ctrl,
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MacPayloadType pt := MAC_PT_RLCMAC_NO_OPT,
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boolean retry := false) := {
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ctrl := {
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mac_hdr := {
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payload_type := pt,
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spare := '00000'B,
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retry := retry
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},
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payload := ctrl
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}
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}
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/* Send Template for Downlink ACK/NACK */
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template RlcmacUlBlock ts_RLCMAC_DL_ACK_NACK(template uint5_t tfi, AckNackDescription andesc, boolean retry := false) := {
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ctrl := {
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mac_hdr := {
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payload_type := MAC_PT_RLCMAC_NO_OPT,
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spare := '00000'B,
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retry := retry
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},
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payload := {
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msg_type := PACKET_DL_ACK_NACK,
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u := {
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dl_ack_nack := {
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dl_tfi := tfi,
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ack_nack_desc := andesc,
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chreq_desc_presence := '0'B,
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chreq_desc := omit,
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ch_qual_rep := c_ChQualRep_default
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}
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}
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}
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}
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}
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/* Template for uplink Data block */
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template RlcmacUlBlock t_RLCMAC_UL_DATA(template uint5_t tfi, template uint4_t cv, template uint7_t bsn,
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template LlcBlocks blocks := {}, template boolean stall := false) := {
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data := {
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mac_hdr := {
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payload_type := MAC_PT_RLC_DATA,
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countdown := cv,
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stall_ind := false,
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retry := false,
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spare := '0'B,
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pfi_ind := false,
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tfi := tfi,
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tlli_ind := false,
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bsn := bsn,
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e := false
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},
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tlli := omit,
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pfi := omit,
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blocks := blocks
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}
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}
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template RlcmacUlBlock t_RLCMAC_UL_DATA_TLLI(template uint5_t tfi, template uint4_t cv, template uint7_t bsn,
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template LlcBlocks blocks := {}, template boolean stall := false, template GprsTlli tlli) := {
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data := {
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mac_hdr := {
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payload_type := MAC_PT_RLC_DATA,
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countdown := cv,
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stall_ind := false,
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retry := false,
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spare := '0'B,
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pfi_ind := false,
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tfi := tfi,
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tlli_ind := true,
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bsn := bsn,
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e := false
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},
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tlli := tlli,
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pfi := omit,
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blocks := blocks
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}
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}
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template DlMacHeader t_RLCMAC_DlMacH(template MacPayloadType pt, template MacRrbp rrbp, template
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uint3_t usf) := {
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payload_type := pt,
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rrbp := rrbp,
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rrbp_valid := ispresent(rrbp),
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usf := usf
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}
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template RlcmacDlBlock tr_RLCMAC_DUMMY_CTRL(template uint3_t usf := ?, template PageMode page_mode := ?) := {
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ctrl := {
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mac_hdr := {
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payload_type := (MAC_PT_RLCMAC_NO_OPT, MAC_PT_RLCMAC_OPT),
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rrbp:= ?,
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rrbp_valid := ?,
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usf := usf
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},
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opt := *,
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payload := {
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msg_type := PACKET_DL_DUMMY_CTRL,
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u := {
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dl_dummy := {
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page_mode := page_mode,
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persistence_levels_present := ?,
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persistence_levels := *
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}
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}
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}
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}
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}
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template RlcmacDlBlock tr_RLCMAC_DL_PACKET_ASS(template uint3_t usf := ?) := {
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ctrl := {
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mac_hdr := {
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payload_type := (MAC_PT_RLCMAC_NO_OPT, MAC_PT_RLCMAC_OPT),
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rrbp:= ?,
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rrbp_valid := ?,
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usf := usf
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},
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opt := *,
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payload := {
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msg_type := PACKET_DL_ASSIGNMENT,
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u := {
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dl_assignment := {
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page_mode := ?,
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pres1 := ?,
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persistence_levels := *,
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tfi_or_tlli := ?
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}
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}
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}
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}
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}
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template RlcmacDlBlock tr_RLCMAC_UL_PACKET_ASS(template uint3_t usf := ?) := {
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ctrl := {
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mac_hdr := {
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payload_type := (MAC_PT_RLCMAC_NO_OPT, MAC_PT_RLCMAC_OPT),
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rrbp:= ?,
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rrbp_valid := ?,
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usf := usf
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},
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opt := *,
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payload := {
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msg_type := PACKET_UL_ASSIGNMENT,
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u := {
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ul_assignment := {
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page_mode := ?,
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persistence_levels_present := ?,
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persistence_levels := *,
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identity := ?,
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is_egprs := ?, /* msg escape */
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gprs := *
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}
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}
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}
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}
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}
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/* Receive Template for Uplink ACK/NACK */
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template RlcmacDlBlock tr_RLCMAC_UL_ACK_NACK(template uint5_t ul_tfi, template GprsTlli tlli := ?) := {
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ctrl := {
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mac_hdr := {
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payload_type := (MAC_PT_RLCMAC_NO_OPT, MAC_PT_RLCMAC_OPT),
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rrbp:= ?,
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rrbp_valid := ?,
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usf := ?
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},
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opt := *,
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payload := {
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msg_type := PACKET_UL_ACK_NACK,
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u := {
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ul_ack_nack := {
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page_mode := ?,
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msg_excape := ?,
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uplink_tfi := ul_tfi,
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is_egprs := '0'B,
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gprs := {
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ch_coding_cmd := ?,
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ack_nack_desc := ?,
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cont_res_tlli_present := ?,
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cont_res_tlli := tlli,
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pkt_ta_present := ?,
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pkt_ta := *,
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pwr_ctrl_present := ?,
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pwr_ctrl := *
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}
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}
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}
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}
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}
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}
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template RlcmacDlBlock tr_RLCMAC_PACKET_PAG_REQ(template uint3_t usf := ?) := {
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ctrl := {
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mac_hdr := {
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payload_type := MAC_PT_RLCMAC_NO_OPT,
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rrbp:= ?,
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rrbp_valid := ?,
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usf := usf
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},
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opt := *,
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payload := {
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msg_type := PACKET_PAGING_REQUEST,
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u := {
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paging := {
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page_mode := ?,
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persistence_levels_present := ?,
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persistence_levels := *,
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nln_present := ?,
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nln := *,
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repeated_pageinfo_present := ?,
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repeated_pageinfo := *
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}
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}
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}
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}
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}
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template RlcmacDlBlock tr_RLCMAC_DATA_RRBP := {
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data := {
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mac_hdr := {
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mac_hdr := {
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payload_type := MAC_PT_RLC_DATA,
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rrbp := ?,
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rrbp_valid := true,
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usf := ?
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},
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hdr_ext := ?
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},
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blocks := ?
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}
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}
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template RlcmacDlBlock tr_RLCMAC_DATA_EGPRS := {
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data_egprs := {
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mac_hdr := ?,
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fbi := ?,
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e := ?,
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blocks := ?
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}
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}
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/* Template for Uplink MAC Control Header */
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template UlMacCtrlHeader t_RLCMAC_UlMacCtrlH(template MacPayloadType pt, template boolean retry := false) := {
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payload_type := pt,
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spare := '00000'B,
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retry := retry
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}
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/* Template for Uplink Control ACK */
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template RlcmacUlBlock ts_RLCMAC_CTRL_ACK(GprsTlli tlli, CtrlAck ack := MS_RCVD_TWO_RLC_SAME_RTI_DIFF_RBSN) := {
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ctrl := {
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mac_hdr := t_RLCMAC_UlMacCtrlH(MAC_PT_RLCMAC_NO_OPT),
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payload := {
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msg_type := PACKET_CONTROL_ACK,
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u := {
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ctrl_ack := {
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tlli := tlli,
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ctrl_ack := ack
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}
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}
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}
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}
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}
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/* Template for a LlcBlock (part of a LLC frame inside RlcMac?lDataBlock */
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template LlcBlock t_RLCMAC_LLCBLOCK(octetstring data, boolean more := false, boolean e := true) := {
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/* let encoder figure out the header */
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hdr := omit,
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payload := data
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}
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} with { encode "RAW"; variant "FIELDORDER(msb)" }
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