L1CTL Test: Get all the way up to dedicated channel establishment
The code is now a proof of concept to establish a dedicated channel via virt_um, at which point we can exchange L2 messages with the BTS.
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@ -18,6 +18,7 @@ module L1CTL_Test {
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port L1CTL_PT L1CTL;
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};
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/* for generating RESET_REQ */
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template L1ctlUlMessage t_L1ctlResetReq(template L1ctlResetType rst_type) := {
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header := t_L1ctlHeader(L1CTL_RESET_REQ),
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ul_info := omit,
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@ -29,12 +30,130 @@ module L1CTL_Test {
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}
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};
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//template UD_send_data
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/* for generating FBSB_REQ */
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template L1ctlUlMessage t_L1CTL_FBSB_REQ(template Arfcn arfcn, template L1ctlFbsbFlags flags, uint8_t sync_info_idx, L1ctlCcchMode ccch_mode, GsmRxLev rxlev_exp) := {
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header := t_L1ctlHeader(L1CTL_FBSB_REQ),
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ul_info := omit,
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payload := {
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fbsb_req := {
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arfcn := arfcn,
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timeout_tdma_frames := 10,
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freq_err_thresh1 := 10000,
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freq_err_thresh2 := 800,
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num_freqerr_avg := 3,
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flags := flags,
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sync_info_idx := sync_info_idx,
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ccch_mode := ccch_mode,
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rxlev_exp := rxlev_exp
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}
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}
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};
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/* for matching against incoming FBSB_CONF */
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template L1ctlDlMessage t_L1CTL_FBSB_CONF(template uint8_t result) := {
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header := t_L1ctlHeader(L1CTL_FBSB_CONF),
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dl_info := ?,
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payload := {
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fbsb_conf := {
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initial_freq_err := ?,
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result := result,
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bsic := ?
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}
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}
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};
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template L1ctlUlMessage t_L1CTL_RACH_REQ(uint8_t ra, uint8_t combined, uint16_t offset) := {
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header := t_L1ctlHeader(L1CTL_RACH_REQ),
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ul_info := {
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chan_nr := t_RslChanNr_RACH(0),
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link_id := ts_RslLinkID_DCCH(0),
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padding := '0000'O
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},
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payload := {
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rach_req := {
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ra := ra,
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combined := combined,
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offset := offset
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}
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}
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}
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template L1ctlUlMessage t_L1CTL_DM_EST_REQ(Arfcn arfcn, RslChannelNr chan_nr, GsmTsc tsc) := {
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header := t_L1ctlHeader(L1CTL_DM_EST_REQ),
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ul_info := {
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chan_nr := chan_nr,
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link_id := ts_RslLinkID_DCCH(0),
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padding := '0000'O
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},
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payload := {
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dm_est_req := {
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tsc := tsc,
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h := 0,
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arfcn := arfcn,
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hopping := omit,
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tch_mode := 0,
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audio_mode := t_L1CTL_AudioModeNone
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}
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}
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}
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template L1ctlUlMessage t_L1CTL_DM_REL_REQ(RslChannelNr chan_nr) := {
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header := t_L1ctlHeader(L1CTL_DM_EST_REQ),
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ul_info := {
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chan_nr := chan_nr,
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link_id := ts_RslLinkID_DCCH(0),
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padding := '0000'O
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},
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payload := {
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other := ''O
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}
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}
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template L1ctlUlMessage t_L1CTL_DATA_REQ(template RslChannelNr chan_nr, template RslLinkId link_id, octetstring l2_data) := {
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header := t_L1ctlHeader(L1CTL_DATA_REQ),
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ul_info := {
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chan_nr := chan_nr,
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link_id := link_id,
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padding := '0000'O
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},
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payload := {
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other := l2_data
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}
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}
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/* for matching against incoming RACH_CONF */
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template L1ctlDlMessage t_L1CTL_RACH_CONF := {
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header := t_L1ctlHeader(L1CTL_RACH_CONF),
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dl_info := ?,
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payload := ?
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};
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/* for matching against incoming RACH_CONF */
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template L1ctlDlMessage t_L1CTL_DATA_IND(template RslChannelNr chan_nr) := {
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header := t_L1ctlHeader(L1CTL_DATA_IND),
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dl_info := {
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chan_nr := chan_nr,
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link_id := ?,
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arfcn := ?,
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frame_nr := ?,
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rx_level := ?,
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snr := ?,
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num_biterr := ?,
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fire_crc := ?
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},
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payload := {
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data_ind := ?
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}
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};
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function f_init() runs on dummy_CT {
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map(self:L1CTL, system:L1CTL);
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L1CTL.send(L1CTL_connect:{path:=l1ctl_sock_path});
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L1CTL.receive(L1CTL_connect_result:{result_code := SUCCESS, err:=omit});
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L1CTL.send(t_L1ctlResetReq(L1CTL_RES_T_SCHED));
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L1CTL.receive;
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}
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testcase TC_si1() runs on dummy_CT {
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@ -48,10 +167,97 @@ module L1CTL_Test {
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setverdict(pass);
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}
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testcase TC_l1ctl() runs on dummy_CT {
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f_init();
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L1CTL.send(t_L1ctlResetReq(L1CTL_RES_T_FULL));
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function f_L1CTL_FBSB(L1CTL_PT pt, Arfcn arfcn, L1ctlCcchMode ccch_mode := CCCH_MODE_COMBINED) {
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timer T := 5.0;
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pt.send(t_L1CTL_FBSB_REQ(arfcn, t_L1CTL_FBSB_F_ALL, 0, ccch_mode, 0));
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T.start
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alt {
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[] pt.receive(t_L1CTL_FBSB_CONF(0)) {};
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[] pt.receive { repeat; };
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[] T.timeout { setverdict(fail, "Timeout in FBSB") };
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}
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}
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function f_L1CTL_RACH(L1CTL_PT pt, uint8_t ra, uint8_t combined := 1, uint16_t offset := 0) return GsmFrameNumber {
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var L1ctlDlMessage rc;
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var GsmFrameNumber fn;
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timer T := 2.0;
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T.start
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pt.send(t_L1CTL_RACH_REQ(ra, 0, 0))
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alt {
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[] pt.receive(t_L1CTL_RACH_CONF) -> value rc { fn := rc.dl_info.frame_nr };
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[] pt.receive { repeat; };
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[] T.timeout { setverdict(fail, "Timeout in RACH") };
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}
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return fn;
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}
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template GsmRrMessage t_RR_IMM_ASS(uint8_t ra, uint8_t fn) := {
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header := t_RrHeader(IMMEDIATE_ASSIGNMENT, ?),
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payload := {
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imm_ass := {
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ded_or_tbf := ?,
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page_mode := ?,
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chan_desc := ?,
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pkt_chan_desc := omit,
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req_ref := f_compute_ReqRef(ra, fn),
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timing_advance := ?,
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mobile_allocation := ?
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}
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}
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};
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function f_L1CTL_WAIT_IMM_ASS(L1CTL_PT pt, uint8_t ra, GsmFrameNumber rach_fn) return ImmediateAssignment {
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var L1ctlDlMessage dl;
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var GsmRrMessage rr;
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timer T := 10.0;
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T.start;
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alt {
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[] pt.receive(t_L1CTL_DATA_IND(t_RslChanNr_PCH_AGCH(0))) -> value dl {
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rr := dec_GsmRrMessage(dl.payload.data_ind.payload);
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log("PCH/AGCN DL RR: ", rr);
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if (match(rr, t_RR_IMM_ASS(ra, rach_fn))) {
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log("Received IMM.ASS for our RACH!");
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} else {
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repeat;
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}
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};
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[] pt.receive { repeat };
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[] T.timeout { setverdict(fail, "Timeout waiting for IMM ASS") };
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}
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T.stop;
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return rr.payload.imm_ass;
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}
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/* Send DM_EST_REQ from parameters derived from IMM ASS */
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function f_L1CTL_DM_EST_REQ_IA(L1CTL_PT pt, ImmediateAssignment imm_ass) {
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pt.send(t_L1CTL_DM_EST_REQ({ false, imm_ass.chan_desc.arfcn }, imm_ass.chan_desc.chan_nr, imm_ass.chan_desc.tsc));
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}
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testcase TC_l1ctl() runs on dummy_CT {
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var GsmFrameNumber rach_fn;
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var uint8_t ra := 23;
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var ImmediateAssignment imm_ass;
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f_init();
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/* send FB/SB req to sync to cell */
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f_L1CTL_FBSB(L1CTL, { false, 871 }, CCCH_MODE_COMBINED);
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/* send RACH request and obtain FN at which it was sent */
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rach_fn := f_L1CTL_RACH(L1CTL, ra);
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/* wait for receiving matching IMM ASS */
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imm_ass := f_L1CTL_WAIT_IMM_ASS(L1CTL, ra, rach_fn)
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/* send DM_EST_REQ */
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f_L1CTL_DM_EST_REQ_IA(L1CTL, imm_ass);
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L1CTL.send(t_L1CTL_DATA_REQ(imm_ass.chan_desc.chan_nr, ts_RslLinkID_DCCH(0), '000102030405060708090a0b0c0d0e0f10111213141516'O));
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L1CTL.send(t_L1CTL_DATA_REQ(imm_ass.chan_desc.chan_nr, ts_RslLinkID_DCCH(0), '000102030405060708090a0b0c0d0e0f10111213141516'O));
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L1CTL.send(t_L1CTL_DATA_REQ(imm_ass.chan_desc.chan_nr, ts_RslLinkID_DCCH(0), '000102030405060708090a0b0c0d0e0f10111213141516'O));
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L1CTL.send(t_L1CTL_DM_REL_REQ(imm_ass.chan_desc.chan_nr));
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setverdict(pass);
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}
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control {
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execute(TC_si1());
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execute(TC_l1ctl());
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@ -78,8 +78,6 @@ module L1CTL_Types {
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padding := '0000'O
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};
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type uint8_t RslLinkId;
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type record L1ctlDlInfo {
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RslChannelNr chan_nr,
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RslLinkId link_id,
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@ -113,6 +111,8 @@ module L1CTL_Types {
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boolean rx_traffic_ind
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} with { variant "" };
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template L1ctlAudioMode t_L1CTL_AudioModeNone := { '0000'B, false, false, false, false };
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type record L1ctlTchModeConf {
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L1ctlTchMode tch_mode,
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L1ctlAudioMode audio_mode,
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@ -168,6 +168,13 @@ module L1CTL_Types {
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boolean fb0
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} with { variant "" };
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template L1ctlFbsbFlags t_L1CTL_FBSB_F_ALL := {
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padding := '00000'B,
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sb := true,
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fb1 := true,
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fb0 := true
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};
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type record L1ctlFbsbReq {
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Arfcn arfcn,
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uint16_t timeout_tdma_frames,
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