| 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 <laforge@gnumonks.org> |
| * (C) 2019 Vadim Yanitskiy <axilirator@gmail.com> |
| * 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 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 PCU_Tests 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; |
| |
| /* 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"); |
| } |
| |
| 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 |
| } |
| |
| /* TS 44.060 sec 12.3 Ack/Nack Description */ |
| private function f_acknackdesc_ack_block(inout AckNackDescription desc, uint7_t bsn, BIT1 final_ack := '0'B) |
| { |
| var integer i; |
| var integer 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; |
| } |
| |
| /* 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 PCUIF_Message pcu_msg; |
| var GsmRrMessage rr_msg; |
| var uint32_t fn; |
| timer T; |
| |
| /* 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)); |
| |
| /* Expect Immediate (TBF) Assignment on TS0/AGCH */ |
| T.start(2.0); |
| alt { |
| [] BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := bts_nr, trx_nr := 0, ts_nr := 0, |
| sapi := PCU_IF_SAPI_AGCH, data := ?)) |
| -> value pcu_msg { |
| rr_imm_ass := dec_GsmRrMessage(pcu_msg.u.data_req.data); |
| log("Rx Immediate Assignment: ", rr_imm_ass); |
| |
| /* Make sure this assignment is for us |
| * TODO: Uplink or Downlink TBF? */ |
| if (match(rr_imm_ass, tr_IMM_TBF_ASS(?, ra, fn))) { |
| setverdict(pass); |
| return true; |
| } |
| |
| /* Not for us? Wait for more. */ |
| repeat; |
| } |
| [] BTS.receive { repeat; } |
| [] T.timeout { |
| setverdict(fail, "Timeout waiting for Immediate Assignment"); |
| } |
| } |
| |
| return false; |
| } |
| |
| 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; |
| } |
| BTS.send(ts_PCUIF_DATA_CNF(bts_nr := 0, trx_nr := 0, ts_nr := 0, block_nr := 0, |
| fn := pcu_msg.u.data_req.fn, arfcn := 871, sapi := PCU_IF_SAPI_PCH, data := macblock)); |
| } |
| |
| /* Expect a Paging Request Type 1 from PCU on PCUIF on specified sapi. */ |
| private function f_pcuif_rx_pch_pag_req1(out GsmRrMessage rr_pag_req1) |
| 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_pag_req1 := dec_GsmRrMessage(macblock); |
| if (not match(rr_pag_req1, tr_PAG_REQ1())) { |
| setverdict(fail, "Failed to match Paging Request Type 1: ", rr_pag_req1); |
| mtc.stop; |
| } |
| BTS.send(ts_PCUIF_DATA_CNF(bts_nr := 0, trx_nr := 0, ts_nr := 0, block_nr := 0, |
| fn := pcu_msg.u.data_req.fn, arfcn := 871, sapi := PCU_IF_SAPI_PCH, data := macblock)); |
| } |
| |
| 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) |
| 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; |
| } |
| |
| 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_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_rx_rlcmac_dl_block_exp_data(out RlcmacDlBlock dl_block, out uint32_t ack_fn, octetstring data, template (present) uint7_t exp_bsn := ?) |
| runs on RAW_PCU_Test_CT { |
| var PCUIF_Message pcu_msg; |
| var uint32_t dl_fn; |
| 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)) { |
| setverdict(fail, "Failed to match Packet data: ", dl_block, " vs ", dl_template); |
| mtc.stop; |
| } |
| |
| 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; |
| } |
| } |
| |
| 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 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.data.mac_hdr.hdr_ext.bsn, '1'B); |
| f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(dl_block.data.mac_hdr.hdr_ext.tfi, 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.data.mac_hdr.hdr_ext.bsn, '1'B); |
| f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(dl_block.data.mac_hdr.hdr_ext.tfi, 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 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; |
| } |
| |
| /* 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); |
| |
| /* ACK the DL block */ |
| f_acknackdesc_ack_block(ack_nack_desc, dl_block.data.mac_hdr.hdr_ext.bsn, '1'B); |
| f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(dl_block.data.mac_hdr.hdr_ext.tfi, ack_nack_desc), 0, sched_fn); |
| } |
| |
| /* 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.data.mac_hdr.hdr_ext.bsn, '1'B); |
| f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(dl_block.data.mac_hdr.hdr_ext.tfi, 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; |
| } |
| } |
| |
| /* 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 MobileL3_CommonIE_Types.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) 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); |
| |
| /* 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 */ |
| 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 IMSI */ |
| f_pkt_paging_match_imsi(dl_block.ctrl.payload.u.paging, imsi); |
| |
| setverdict(pass); |
| } |
| |
| 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) runs on RAW_PCU_Test_CT { |
| var GsmRrMessage rr_pag_req1; |
| var OCT4 tlli := '00000001'O; |
| 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); |
| |
| /* Send paging request */ |
| BSSGP[0].send(ts_BSSGP_PS_PAGING_IMSI(bvci, imsi)); |
| |
| /* Receive it on BTS side towards MS */ |
| f_pcuif_rx_pch_pag_req1(rr_pag_req1); |
| |
| setverdict(pass); |
| } |
| |
| 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); |
| } |
| |
| control { |
| execute( TC_pcuif_suspend() ); |
| execute( TC_ta_ptcch_idle() ); |
| execute( TC_ta_rach_imm_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_imm_ass_dl_block_retrans() ); |
| execute( TC_paging_cs_from_bts() ); |
| execute (TC_paging_cs_from_sgsn_sign() ); |
| execute (TC_paging_cs_from_sgsn_ptp() ); |
| execute (TC_paging_ps_from_sgsn_sign() ); |
| execute (TC_paging_ps_from_sgsn_ptp() ); |
| } |
| |
| |
| |
| |
| |
| |
| } |