Harald Welte | a0895f9 | 2018-03-08 11:51:23 +0100 | [diff] [blame] | 1 | module PCU_Tests { |
Pau Espin Pedrol | 8dd59fb | 2020-04-29 15:08:16 +0200 | [diff] [blame] | 2 | |
| 3 | /* "RAW" PCU tests: Talk directly to the PCU socket of OsmoPCU on the one hand side (emulating |
| 4 | the BTS/BSC side PCU socket server) and the Gb interface on the other hand side. No NS/BSSGP |
| 5 | Emulation is used; rather, we simply use the NS_CodecPort to implement both standard and non- |
| 6 | standard procedures on the NS and BSSGP level. The goal of these tests is to test exactly |
| 7 | those NS and BSSGP implementations on the BSS (PCU) side. */ |
| 8 | |
| 9 | /* (C) 2018-2019 Harald Welte <laforge@gnumonks.org> |
| 10 | * (C) 2019 Vadim Yanitskiy <axilirator@gmail.com> |
| 11 | * All rights reserved. |
| 12 | * |
| 13 | * Released under the terms of GNU General Public License, Version 2 or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 17 | */ |
| 18 | |
| 19 | friend module PCU_Tests_NS; |
| 20 | |
| 21 | import from General_Types all; |
| 22 | import from Osmocom_Types all; |
| 23 | import from GSM_Types all; |
| 24 | import from GSM_RR_Types all; |
| 25 | |
| 26 | import from Osmocom_VTY_Functions all; |
| 27 | import from TELNETasp_PortType all; |
| 28 | |
| 29 | import from MobileL3_GMM_SM_Types all; |
| 30 | import from RLCMAC_CSN1_Types all; |
Pau Espin Pedrol | e8d7d16 | 2020-04-29 19:07:36 +0200 | [diff] [blame] | 31 | import from RLCMAC_CSN1_Templates all; |
Pau Espin Pedrol | 8dd59fb | 2020-04-29 15:08:16 +0200 | [diff] [blame] | 32 | import from RLCMAC_Types all; |
Pau Espin Pedrol | e8d7d16 | 2020-04-29 19:07:36 +0200 | [diff] [blame] | 33 | import from RLCMAC_Templates all; |
Pau Espin Pedrol | 8dd59fb | 2020-04-29 15:08:16 +0200 | [diff] [blame] | 34 | |
| 35 | import from MobileL3_CommonIE_Types all; |
| 36 | import from L3_Templates all; |
| 37 | |
| 38 | import from NS_Types all; |
| 39 | import from BSSGP_Types all; |
| 40 | import from Osmocom_Gb_Types all; |
| 41 | |
| 42 | import from BSSGP_Emulation all; /* BssgpConfig */ |
| 43 | import from NS_Emulation all; /* NSConfiguration */ |
| 44 | |
| 45 | import from UD_Types all; |
| 46 | import from PCUIF_Types all; |
| 47 | import from PCUIF_CodecPort all; |
| 48 | import from PCUIF_Components all; |
| 49 | import from IPL4asp_Types all; |
| 50 | import from Native_Functions all; |
| 51 | import from SGSN_Components all; |
| 52 | |
| 53 | modulepar { |
| 54 | charstring mp_pcu_sock_path := PCU_SOCK_DEFAULT; |
| 55 | |
| 56 | float X2002 := 0.2; /* Timer -2002, IMM ASSIGN confirm delay */ |
| 57 | } |
| 58 | |
| 59 | |
| 60 | /* FIXME: make sure to use parameters from mp_gb_cfg.cell_id in the PCU INFO IND */ |
| 61 | private template (value) PCUIF_info_ind ts_PCUIF_INFO_default := { |
| 62 | version := PCU_IF_VERSION, |
| 63 | flags := c_PCUIF_Flags_default, |
| 64 | trx := valueof(ts_PCUIF_InfoTrxs_def), |
| 65 | bsic := 7, |
| 66 | mcc := 262, |
| 67 | mnc := 42, |
| 68 | mnc_3_digits := 0, |
| 69 | lac := 13135, |
| 70 | rac := 0, |
| 71 | nsei := mp_nsconfig.nsei, |
| 72 | nse_timer := { 3, 3, 3, 3, 30, 3, 10 }, |
| 73 | cell_timer := { 3, 3, 3, 3, 3, 10, 3, 10, 3, 10, 3 }, |
| 74 | cell_id := 20960, |
| 75 | repeat_time := 5 * 50, |
| 76 | repeat_count := 3, |
| 77 | bvci := mp_gb_cfg.bvci, |
| 78 | t3142 := 20, |
| 79 | t3169 := 5, |
| 80 | t3191 := 5, |
| 81 | t3193_10ms := 160, |
| 82 | t3195 := 5, |
| 83 | t3101 := 10, |
| 84 | t3103 := 4, |
| 85 | t3105 := 8, |
| 86 | cv_countdown := 15, |
| 87 | dl_tbf_ext := 250 * 10, /* ms */ |
| 88 | ul_tbf_ext := 250 * 10, /* ms */ |
| 89 | initial_cs := 2, |
| 90 | initial_mcs := 6, |
| 91 | nsvci := { mp_nsconfig.nsvci, 0 }, |
| 92 | local_pprt := { mp_nsconfig.remote_udp_port, 0 }, |
| 93 | remote_port := { mp_nsconfig.local_udp_port, 0 }, |
| 94 | remote_ip := { f_inet_haddr(mp_nsconfig.local_ip) , '00000000'O } |
| 95 | } |
| 96 | |
| 97 | type record lqual_range { |
| 98 | /* component reference to the IPA_Client component used for RSL */ |
| 99 | uint8_t low, |
| 100 | uint8_t high |
| 101 | } |
| 102 | |
| 103 | type component RAW_PCU_Test_CT extends bssgp_CT { |
| 104 | /* Connection to the BTS component (one for now) */ |
| 105 | port RAW_PCU_MSG_PT BTS; |
| 106 | /* Connection to the PCUIF component */ |
| 107 | port RAW_PCU_MSG_PT PCUIF; |
| 108 | /* VTY connection to the PCU */ |
| 109 | port TELNETasp_PT PCUVTY; |
| 110 | |
| 111 | /* Uplink CS/MCS thresholds, default from pcu_main.c: */ |
| 112 | var lqual_range g_cs_lqual_ranges[4] := {{low := 0, high := 6}, |
| 113 | {low := 5, high := 8}, |
| 114 | {low := 7, high := 13}, |
| 115 | {low := 12,high := 35}}; |
| 116 | var lqual_range g_mcs_lqual_ranges[9] := {{low := 0, high := 6}, |
| 117 | {low := 5, high := 8}, |
| 118 | {low := 7, high := 13}, |
| 119 | {low := 12,high := 15}, |
| 120 | {low := 14, high := 17}, |
| 121 | {low := 16, high := 18}, |
| 122 | {low := 17,high := 20}, |
| 123 | {low := 19, high := 24}, |
| 124 | {low := 23,high := 35}}; |
| 125 | var uint8_t g_cs_initial_dl := 1; |
| 126 | var uint8_t g_cs_initial_ul := 1; |
| 127 | var uint8_t g_mcs_initial_dl := 1; |
| 128 | var uint8_t g_mcs_initial_ul := 1; |
| 129 | var uint8_t g_cs_max_dl := 4; |
| 130 | var uint8_t g_cs_max_ul := 4; |
| 131 | var uint8_t g_mcs_max_dl := 9; |
| 132 | var uint8_t g_mcs_max_ul := 9; |
| 133 | |
| 134 | var boolean g_egprs_only := false; |
| 135 | |
| 136 | /* Guard timeout */ |
| 137 | timer g_T_guard := 60.0; |
| 138 | }; |
| 139 | |
| 140 | private altstep as_Tguard_RAW() runs on RAW_PCU_Test_CT { |
| 141 | [] g_T_guard.timeout { |
| 142 | setverdict(fail, "Timeout of T_guard"); |
| 143 | mtc.stop; |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | private function f_pcuvty_set_allowed_cs_mcs() runs on RAW_PCU_Test_CT { |
| 148 | f_vty_config2(PCUVTY, {"pcu"}, "cs " & int2str(g_cs_initial_dl) & " " & int2str(g_cs_initial_ul)); |
| 149 | f_vty_config2(PCUVTY, {"pcu"}, "cs max " & int2str(g_cs_max_dl) & " " & int2str(g_cs_max_ul)); |
| 150 | |
| 151 | f_vty_config2(PCUVTY, {"pcu"}, "mcs " & int2str(g_mcs_initial_dl) & " " & int2str(g_mcs_initial_ul)); |
| 152 | f_vty_config2(PCUVTY, {"pcu"}, "mcs max " & int2str(g_mcs_max_dl) & " " & int2str(g_mcs_max_ul)); |
| 153 | } |
| 154 | |
| 155 | private function f_pcuvty_set_link_quality_ranges() runs on RAW_PCU_Test_CT { |
| 156 | var charstring cmd; |
| 157 | |
| 158 | cmd := "cs link-quality-ranges" & |
| 159 | " cs1 " & int2str(g_cs_lqual_ranges[0].high) & |
| 160 | " cs2 " & int2str(g_cs_lqual_ranges[1].low) & " " & int2str(g_cs_lqual_ranges[1].high) & |
| 161 | " cs3 " & int2str(g_cs_lqual_ranges[2].low) & " " & int2str(g_cs_lqual_ranges[2].high) & |
| 162 | " cs4 " & int2str(g_cs_lqual_ranges[3].low); |
| 163 | f_vty_config2(PCUVTY, {"pcu"}, cmd); |
| 164 | |
| 165 | cmd := "mcs link-quality-ranges" & |
| 166 | " mcs1 " & int2str(g_mcs_lqual_ranges[0].high) & |
| 167 | " mcs2 " & int2str(g_mcs_lqual_ranges[1].low) & " " & int2str(g_mcs_lqual_ranges[1].high) & |
| 168 | " mcs3 " & int2str(g_mcs_lqual_ranges[2].low) & " " & int2str(g_mcs_lqual_ranges[2].high) & |
| 169 | " mcs4 " & int2str(g_mcs_lqual_ranges[3].low) & " " & int2str(g_mcs_lqual_ranges[3].high) & |
| 170 | " mcs5 " & int2str(g_mcs_lqual_ranges[4].low) & " " & int2str(g_mcs_lqual_ranges[4].high) & |
| 171 | " mcs6 " & int2str(g_mcs_lqual_ranges[5].low) & " " & int2str(g_mcs_lqual_ranges[5].high) & |
| 172 | " mcs7 " & int2str(g_mcs_lqual_ranges[6].low) & " " & int2str(g_mcs_lqual_ranges[6].high) & |
| 173 | " mcs8 " & int2str(g_mcs_lqual_ranges[7].low) & " " & int2str(g_mcs_lqual_ranges[7].high) & |
| 174 | " mcs9 " & int2str(g_mcs_lqual_ranges[8].low); |
| 175 | f_vty_config2(PCUVTY, {"pcu"}, cmd); |
| 176 | } |
| 177 | |
| 178 | private function f_init_vty(charstring id) runs on RAW_PCU_Test_CT { |
| 179 | map(self:PCUVTY, system:PCUVTY); |
| 180 | f_vty_set_prompts(PCUVTY); |
| 181 | f_vty_transceive(PCUVTY, "enable"); |
| 182 | |
| 183 | if (g_egprs_only) { |
| 184 | f_vty_config2(PCUVTY, {"pcu"}, "egprs only"); |
| 185 | } else { |
| 186 | f_vty_config2(PCUVTY, {"pcu"}, "no egprs"); |
| 187 | } |
| 188 | } |
| 189 | |
Pau Espin Pedrol | 2456dad | 2020-04-30 20:22:38 +0200 | [diff] [blame^] | 190 | function f_init_raw(charstring id, template (value) PCUIF_info_ind info_ind := ts_PCUIF_INFO_default) |
Pau Espin Pedrol | 8dd59fb | 2020-04-29 15:08:16 +0200 | [diff] [blame] | 191 | runs on RAW_PCU_Test_CT { |
| 192 | var RAW_PCUIF_CT vc_PCUIF; |
| 193 | var RAW_PCU_BTS_CT vc_BTS; |
| 194 | |
| 195 | /* Start the guard timer */ |
| 196 | g_T_guard.start; |
| 197 | activate(as_Tguard_RAW()); |
| 198 | |
| 199 | /* Init PCU interface component */ |
| 200 | vc_PCUIF := RAW_PCUIF_CT.create("PCUIF-" & id); |
| 201 | connect(vc_PCUIF:MTC, self:PCUIF); |
| 202 | map(vc_PCUIF:PCU, system:PCU); |
| 203 | |
| 204 | /* Create one BTS component (we may want more some day) */ |
| 205 | vc_BTS := RAW_PCU_BTS_CT.create("BTS-" & id); |
| 206 | connect(vc_BTS:PCUIF, vc_PCUIF:BTS); |
| 207 | connect(vc_BTS:TC, self:BTS); |
| 208 | |
| 209 | f_init_vty(id); |
| 210 | |
| 211 | vc_PCUIF.start(f_PCUIF_CT_handler(mp_pcu_sock_path)); |
| 212 | vc_BTS.start(f_BTS_CT_handler(0, valueof(info_ind))); |
| 213 | |
| 214 | /* Wait until the BTS is ready (SI13 negotiated) */ |
| 215 | BTS.receive(tr_RAW_PCU_EV(BTS_EV_SI13_NEGO)); |
| 216 | } |
| 217 | |
| 218 | template AckNackDescription t_AckNackDescription_init := { |
| 219 | final_ack := '0'B, |
| 220 | starting_seq_nr := 0, |
| 221 | receive_block_bitmap := '0000000000000000000000000000000000000000000000000000000000000000'B |
| 222 | } |
| 223 | |
| 224 | private function f_rlcmac_dl_block_get_tfi(RlcmacDlBlock dl_block) return uint5_t { |
| 225 | if (ischosen(dl_block.data)) { |
| 226 | return dl_block.data.mac_hdr.hdr_ext.tfi; |
| 227 | } else { |
| 228 | return dl_block.data_egprs.mac_hdr.tfi; |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | /* TS 44.060 sec 12.3 Ack/Nack Description */ |
| 233 | private function f_acknackdesc_ack_block(inout AckNackDescription desc, RlcmacDlBlock dl_block, BIT1 final_ack := '0'B) |
| 234 | { |
| 235 | var uint7_t bsn; |
| 236 | var integer i; |
| 237 | var integer inc; |
| 238 | |
| 239 | if (ischosen(dl_block.data)) { |
| 240 | bsn := dl_block.data.mac_hdr.hdr_ext.bsn; |
| 241 | } else { |
| 242 | bsn := dl_block.data_egprs.mac_hdr.bsn1; |
| 243 | } |
| 244 | |
| 245 | inc := bsn - desc.starting_seq_nr + 1; |
| 246 | /* Filling hole? */ |
| 247 | if (bsn < desc.starting_seq_nr) { |
| 248 | desc.receive_block_bitmap[lengthof(desc.receive_block_bitmap) - (desc.starting_seq_nr - bsn)] := int2bit(1, 1); |
| 249 | return; |
| 250 | } |
| 251 | |
| 252 | /* SSN is increased, and so RBB values need to be moved */ |
| 253 | for (i := 0; i < lengthof(desc.receive_block_bitmap) - inc; i := i+1) { |
| 254 | desc.receive_block_bitmap[i] := desc.receive_block_bitmap[i + inc]; |
| 255 | } |
| 256 | for (i := lengthof(desc.receive_block_bitmap) - inc; i < lengthof(desc.receive_block_bitmap) - 1; i := i+1) { |
| 257 | desc.receive_block_bitmap[i] := int2bit(0, 1); |
| 258 | } |
| 259 | /* Now we can set current bit and update SSN */ |
| 260 | desc.starting_seq_nr := bsn + 1; |
| 261 | desc.receive_block_bitmap[lengthof(desc.receive_block_bitmap) - 1] := int2bit(1, 1); |
| 262 | |
| 263 | /* Finally update the final_ack bit as requested: */ |
| 264 | desc.final_ack := final_ack; |
| 265 | } |
| 266 | |
| 267 | /* This function can be used to send DATA.cnf in response to the IUT originated DATA.req. |
| 268 | * NOTE: it's the responsibility of caller to make sure that pcu_msg contains u.data_req. */ |
| 269 | private function f_pcuif_tx_data_cnf(in PCUIF_Message pcu_msg) |
| 270 | runs on RAW_PCU_Test_CT { |
| 271 | var PCUIF_Message pcu_msg_cnf := { |
| 272 | msg_type := PCU_IF_MSG_DATA_CNF, |
| 273 | bts_nr := pcu_msg.bts_nr, |
| 274 | spare := pcu_msg.spare, |
| 275 | u := { data_cnf := pcu_msg.u.data_req } |
| 276 | }; |
| 277 | |
| 278 | /* PCU wants DATA.cnf containing basically everything that was in DATA.req, |
| 279 | * but PCU_IF_SAPI_PCH is a special case - paging group shall be excluded. */ |
| 280 | if (pcu_msg.u.data_req.sapi == PCU_IF_SAPI_PCH) { |
| 281 | pcu_msg_cnf.u.data_cnf.data := substr(pcu_msg.u.data_req.data, 3, |
| 282 | pcu_msg.u.data_req.len - 3); |
| 283 | } |
| 284 | |
| 285 | BTS.send(pcu_msg_cnf); |
| 286 | } |
| 287 | |
| 288 | private function f_pcuif_rx_imm_ass(out GsmRrMessage rr_imm_ass, |
| 289 | template PCUIF_Sapi sapi := PCU_IF_SAPI_AGCH, |
| 290 | template GsmRrMessage t_imm_ass := ?, |
| 291 | uint8_t bts_nr := 0) |
| 292 | runs on RAW_PCU_Test_CT return boolean { |
| 293 | var PCUIF_Message pcu_msg; |
| 294 | var octetstring data; |
| 295 | timer T; |
| 296 | |
| 297 | T.start(2.0); |
| 298 | alt { |
| 299 | [] BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := bts_nr, trx_nr := 0, ts_nr := 0, |
| 300 | sapi := sapi, data := ?)) -> value pcu_msg { |
| 301 | /* On PCH the payload is prefixed with paging group (3 octets): skip it. |
| 302 | * TODO: add an additional template parameter, so we can match it. */ |
| 303 | if (pcu_msg.u.data_req.sapi == PCU_IF_SAPI_PCH) { |
| 304 | data := substr(pcu_msg.u.data_req.data, 3, pcu_msg.u.data_req.len - 3); |
| 305 | } else { |
| 306 | data := pcu_msg.u.data_req.data; |
| 307 | } |
| 308 | |
| 309 | rr_imm_ass := dec_GsmRrMessage(data); |
| 310 | if (not match(rr_imm_ass, t_imm_ass)) { |
| 311 | /* Not for us? Wait for more. */ |
| 312 | repeat; |
| 313 | } |
| 314 | |
| 315 | log("Rx Immediate Assignment: ", rr_imm_ass); |
| 316 | setverdict(pass); |
| 317 | return true; |
| 318 | } |
| 319 | [] BTS.receive { repeat; } |
| 320 | [] T.timeout { |
| 321 | setverdict(fail, "Timeout waiting for Immediate Assignment"); |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | return false; |
| 326 | } |
| 327 | |
| 328 | /* FIXME: properly encode RA (see TS 24.060, table 11.2.5.2) */ |
| 329 | private function f_establish_tbf(out GsmRrMessage rr_imm_ass, uint8_t bts_nr := 0, |
| 330 | uint16_t ra := oct2int('3A'O), uint8_t is_11bit := 0, |
| 331 | PCUIF_BurstType burst_type := BURST_TYPE_0, |
| 332 | TimingAdvance ta := 0) |
| 333 | runs on RAW_PCU_Test_CT return boolean { |
| 334 | var uint32_t fn; |
| 335 | |
| 336 | /* FIXME: ask the BTS component to give us the current TDMA fn */ |
| 337 | fn := 1337 + ta; |
| 338 | |
| 339 | /* Send RACH.ind */ |
| 340 | log("Sending RACH.ind on fn=", fn, " with RA=", ra, ", TA=", ta); |
| 341 | BTS.send(ts_PCUIF_RACH_IND(bts_nr := bts_nr, trx_nr := 0, ts_nr := 0, |
| 342 | ra := ra, is_11bit := is_11bit, |
| 343 | burst_type := burst_type, |
| 344 | fn := fn, arfcn := 871, |
| 345 | qta := ta * 4)); |
| 346 | |
| 347 | /* 3GPP TS 44.018, table 9.1.8.1, note 2b: Request Reference shall be set to 127 |
| 348 | * when Immediate Assignment is triggered by EGPRS Packet Channel Request. Here |
| 349 | * we assume that 11 bit RA always contains EGPRS Packet Channel Request. */ |
| 350 | if (is_11bit != 0) { ra := 127; } |
| 351 | |
| 352 | /* Expect Immediate (TBF) Assignment on TS0/AGCH */ |
| 353 | return f_pcuif_rx_imm_ass(rr_imm_ass, PCU_IF_SAPI_AGCH, |
| 354 | tr_IMM_TBF_ASS(?, ra, fn), |
| 355 | bts_nr := bts_nr); |
| 356 | } |
| 357 | |
| 358 | private function f_imm_ass_verify_ul_tbf_ass(GsmRrMessage rr_imm_ass, out PacketUlAssign ul_tbf_ass) |
| 359 | runs on RAW_PCU_Test_CT return boolean { |
| 360 | |
| 361 | /* Make sure we received an UL TBF Assignment */ |
| 362 | if (match(rr_imm_ass, tr_IMM_TBF_ASS(dl := false, rest := tr_IaRestOctets_ULAss(?)))) { |
| 363 | ul_tbf_ass := rr_imm_ass.payload.imm_ass.rest_octets.hh.pa.uldl.ass.ul; |
| 364 | log("Rx Uplink TBF assignment: ", ul_tbf_ass); |
| 365 | setverdict(pass); |
| 366 | } else { |
| 367 | setverdict(fail, "Failed to match UL TBF Assignment"); |
| 368 | return false; |
| 369 | } |
| 370 | |
| 371 | /* Make sure we have got a TBF with Dynamic Block Allocation */ |
| 372 | if (ul_tbf_ass.dynamic == omit) { |
| 373 | setverdict(fail, "Single Block Allocation is not handled by ", testcasename()); |
| 374 | return false; |
| 375 | } |
| 376 | |
| 377 | return true; |
| 378 | } |
| 379 | |
| 380 | private function f_imm_ass_verify_dl_tbf_ass(GsmRrMessage rr_imm_ass, out PacketDlAssign dl_tbf_ass) |
| 381 | runs on RAW_PCU_Test_CT return boolean { |
| 382 | |
| 383 | /* Make sure we received a DL TBF Assignment */ |
| 384 | if (match(rr_imm_ass, tr_IMM_TBF_ASS(dl := true, rest := tr_IaRestOctets_DLAss(?)))) { |
| 385 | dl_tbf_ass := rr_imm_ass.payload.imm_ass.rest_octets.hh.pa.uldl.ass.dl; |
| 386 | log("Rx Downlink TBF assignment: ", dl_tbf_ass); |
| 387 | setverdict(pass); |
| 388 | } else { |
| 389 | setverdict(fail, "Failed to match DL TBF Assignment"); |
| 390 | return false; |
| 391 | } |
| 392 | |
| 393 | return true; |
| 394 | } |
| 395 | |
| 396 | /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ |
Pau Espin Pedrol | 2456dad | 2020-04-30 20:22:38 +0200 | [diff] [blame^] | 397 | function f_pcuif_tx_data_ind(octetstring data, int16_t lqual_cb := 0, uint32_t fn := 0) |
Pau Espin Pedrol | 8dd59fb | 2020-04-29 15:08:16 +0200 | [diff] [blame] | 398 | runs on RAW_PCU_Test_CT { |
| 399 | var template RAW_PCU_EventParam ev_param := {tdma_fn := ? }; |
| 400 | BTS.send(ts_PCUIF_DATA_IND(bts_nr := 0, trx_nr := 0, ts_nr := 7, block_nr := 0, |
| 401 | sapi := PCU_IF_SAPI_PDTCH, data := data, |
| 402 | fn := fn, arfcn := 871, lqual_cb := lqual_cb)); |
| 403 | if (fn != 0) { |
| 404 | ev_param := {tdma_fn := fn }; |
| 405 | } |
| 406 | BTS.receive(tr_RAW_PCU_EV(TDMA_EV_PDTCH_BLOCK_SENT, ev_param)); |
| 407 | } |
| 408 | |
| 409 | /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ |
| 410 | private function f_pcuif_rx_data_req(out PCUIF_Message pcu_msg) |
| 411 | runs on RAW_PCU_Test_CT { |
| 412 | BTS.send(ts_PCUIF_RTS_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, |
| 413 | sapi := PCU_IF_SAPI_PDTCH, fn := 0, |
| 414 | arfcn := 871, block_nr := 0)); |
| 415 | BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, |
| 416 | sapi := PCU_IF_SAPI_PDTCH)) -> value pcu_msg; |
| 417 | } |
| 418 | |
| 419 | /* Expect an Immediate Assignment (paging) from PCU on PCUIF on specified sapi. */ |
| 420 | private function f_pcuif_rx_pch_imm_tbf_ass(out GsmRrMessage rr_imm_ass) |
| 421 | runs on RAW_PCU_Test_CT { |
| 422 | var PCUIF_Message pcu_msg; |
| 423 | var octetstring macblock; |
| 424 | BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 0, |
| 425 | sapi := PCU_IF_SAPI_PCH)) -> value pcu_msg; |
| 426 | /* First 3 bytes contain paging group: */ |
| 427 | macblock := substr(pcu_msg.u.data_req.data, 3, pcu_msg.u.data_req.len - 3); |
| 428 | rr_imm_ass := dec_GsmRrMessage(macblock); |
| 429 | if (not match(rr_imm_ass, tr_IMM_TBF_ASS())) { |
| 430 | setverdict(fail, "Failed to match Immediate Assignment: ", rr_imm_ass); |
| 431 | mtc.stop; |
| 432 | } |
| 433 | f_pcuif_tx_data_cnf(pcu_msg); |
| 434 | } |
| 435 | |
| 436 | /* Expect a Paging Request Type 1 from PCU on PCUIF on specified sapi. */ |
| 437 | private function f_pcuif_rx_pch_pag_req1(template MobileIdentityV mi1 := ?, |
| 438 | template integer pag_group := ?) |
| 439 | runs on RAW_PCU_Test_CT return GsmRrMessage { |
| 440 | var GsmRrMessage rr_pag_req1; |
| 441 | var PCUIF_Message pcu_msg; |
| 442 | var octetstring imsi_suff_octstr; |
| 443 | var integer pag_group_rx; |
| 444 | var octetstring macblock; |
| 445 | |
| 446 | BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 0, |
| 447 | sapi := PCU_IF_SAPI_PCH)) -> value pcu_msg; |
| 448 | |
| 449 | /* First 3 bytes contain IMSI suffix to calculate paging group: */ |
| 450 | imsi_suff_octstr := substr(pcu_msg.u.data_req.data, 0, 3); |
| 451 | pag_group_rx := str2int(oct2char(imsi_suff_octstr[0])) * 100 + |
| 452 | str2int(oct2char(imsi_suff_octstr[1])) * 10 + |
| 453 | str2int(oct2char(imsi_suff_octstr[2])); |
| 454 | |
| 455 | /* Make sure we've got RR Paging Request Type 1 for a given MI */ |
| 456 | macblock := substr(pcu_msg.u.data_req.data, 3, pcu_msg.u.data_req.len - 3); |
| 457 | rr_pag_req1 := dec_GsmRrMessage(macblock); |
| 458 | if (not match(rr_pag_req1, tr_PAG_REQ1(tr_MI_LV(mi1)))) { |
| 459 | setverdict(fail, "Failed to match Paging Request Type 1: ", rr_pag_req1); |
| 460 | mtc.stop; |
| 461 | } |
| 462 | |
| 463 | /* Make sure that received paging froup matches the expected one */ |
| 464 | if (not match(pag_group_rx, pag_group)) { |
| 465 | setverdict(fail, "Paging group", pag_group_rx, " does not match expected ", pag_group); |
| 466 | mtc.stop; |
| 467 | } |
| 468 | |
| 469 | f_pcuif_tx_data_cnf(pcu_msg); |
| 470 | return rr_pag_req1; |
| 471 | } |
| 472 | |
| 473 | private function f_tx_rlcmac_ul_block(template (value) RlcmacUlBlock ul_data, int16_t lqual_cb := 0, uint32_t fn := 0) |
| 474 | runs on RAW_PCU_Test_CT { |
| 475 | var octetstring data; |
| 476 | /* Encode the payload of DATA.ind */ |
| 477 | data := enc_RlcmacUlBlock(valueof(ul_data)); |
| 478 | data := f_pad_oct(data, 23, '00'O); /* CS-1 */ |
| 479 | |
| 480 | /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ |
| 481 | f_pcuif_tx_data_ind(data, lqual_cb, fn); |
| 482 | } |
| 483 | |
| 484 | private function f_tx_rlcmac_ul_n_blocks(PacketUlAssign ul_tbf_ass, integer num_blocks := 1) |
| 485 | runs on RAW_PCU_Test_CT { |
| 486 | var template (value) RlcmacUlBlock ul_data := t_RLCMAC_UL_DATA( |
| 487 | tfi := ul_tbf_ass.dynamic.tfi_assignment, |
| 488 | cv := num_blocks - 1, /* num UL blocks to be sent (to be overridden in loop) */ |
| 489 | bsn := 0, /* TODO: what should be here? */ |
| 490 | blocks := { /* To be generated in loop */ }); |
| 491 | |
| 492 | /* HACK: patch missing TLLI; otherwise OsmoPCU rejects DATA.req */ |
| 493 | ul_data.data.tlli := '00000001'O; |
| 494 | |
| 495 | for (var integer i := 0; i < num_blocks; i := i + 1) { |
| 496 | /* Prepare a new UL block (CV, random payload) */ |
| 497 | ul_data.data.mac_hdr.countdown := (num_blocks - i - 1); |
| 498 | ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; |
| 499 | f_tx_rlcmac_ul_block(ul_data); |
| 500 | } |
| 501 | } |
| 502 | |
| 503 | private function f_rx_rlcmac_dl_block(out RlcmacDlBlock dl_block, out uint32_t dl_fn, template (present) CodingScheme exp_cs_mcs := ?) |
| 504 | runs on RAW_PCU_Test_CT { |
| 505 | var PCUIF_Message pcu_msg; |
| 506 | f_pcuif_rx_data_req(pcu_msg); |
| 507 | dl_block := dec_RlcmacDlBlock(pcu_msg.u.data_req.data); |
| 508 | dl_fn := pcu_msg.u.data_req.fn; |
| 509 | |
| 510 | var integer len := lengthof(pcu_msg.u.data_req.data); |
| 511 | var CodingScheme cs_mcs := f_rlcmac_block_len2cs_mcs(len) |
| 512 | if (not match(f_rlcmac_block_len2cs_mcs(len), exp_cs_mcs)) { |
| 513 | setverdict(fail, "Failed to match Coding Scheme exp ", exp_cs_mcs, " vs ", cs_mcs, " (", len, ")"); |
| 514 | mtc.stop; |
| 515 | } |
| 516 | } |
| 517 | |
| 518 | private function f_rx_rlcmac_dl_block_exp_ack_nack(out RlcmacDlBlock dl_block, out uint32_t poll_fn) |
| 519 | runs on RAW_PCU_Test_CT { |
| 520 | var uint32_t dl_fn; |
| 521 | |
| 522 | f_rx_rlcmac_dl_block(dl_block, dl_fn); |
| 523 | if (not match(dl_block, tr_RLCMAC_UL_ACK_NACK(ul_tfi := ?, tlli := ?))) { |
| 524 | setverdict(fail, "Failed to match Packet Uplink ACK / NACK"); |
| 525 | mtc.stop; |
| 526 | } |
| 527 | |
| 528 | poll_fn := dl_fn + f_rrbp_fn_delay(dl_block.ctrl.mac_hdr.rrbp); |
| 529 | } |
| 530 | |
| 531 | private function f_rx_rlcmac_dl_block_exp_dummy(out RlcmacDlBlock dl_block) |
| 532 | runs on RAW_PCU_Test_CT { |
| 533 | var uint32_t dl_fn; |
| 534 | |
| 535 | f_rx_rlcmac_dl_block(dl_block, dl_fn); |
| 536 | if (not match(dl_block, tr_RLCMAC_DUMMY_CTRL())) { |
| 537 | setverdict(fail, "Failed to match Packet DUMMY DL"); |
| 538 | mtc.stop; |
| 539 | } |
| 540 | } |
| 541 | |
| 542 | private function f_rx_rlcmac_dl_block_exp_pkt_ass(out RlcmacDlBlock dl_block, out uint32_t poll_fn) |
| 543 | runs on RAW_PCU_Test_CT { |
| 544 | var uint32_t dl_fn; |
| 545 | |
| 546 | f_rx_rlcmac_dl_block(dl_block, dl_fn); |
| 547 | if (not match(dl_block, tr_RLCMAC_DL_PACKET_ASS())) { |
| 548 | setverdict(fail, "Failed to match Packet Downlink Assignment"); |
| 549 | mtc.stop; |
| 550 | } |
| 551 | |
| 552 | poll_fn := dl_fn + f_rrbp_fn_delay(dl_block.ctrl.mac_hdr.rrbp); |
| 553 | } |
| 554 | |
| 555 | private function f_rx_rlcmac_dl_block_exp_pkt_ul_ass(out RlcmacDlBlock dl_block, out uint32_t poll_fn) |
| 556 | runs on RAW_PCU_Test_CT { |
| 557 | var uint32_t dl_fn; |
| 558 | |
| 559 | f_rx_rlcmac_dl_block(dl_block, dl_fn); |
| 560 | if (not match(dl_block, tr_RLCMAC_UL_PACKET_ASS())) { |
| 561 | setverdict(fail, "Failed to match Packet Uplink Assignment"); |
| 562 | mtc.stop; |
| 563 | } |
| 564 | |
| 565 | poll_fn := dl_fn + f_rrbp_fn_delay(dl_block.ctrl.mac_hdr.rrbp); |
| 566 | } |
| 567 | |
| 568 | |
| 569 | private function f_rx_rlcmac_dl_block_exp_pkt_pag_req(out RlcmacDlBlock dl_block) |
| 570 | runs on RAW_PCU_Test_CT { |
| 571 | var uint32_t dl_fn; |
| 572 | |
| 573 | f_rx_rlcmac_dl_block(dl_block, dl_fn); |
| 574 | if (not match(dl_block, tr_RLCMAC_PACKET_PAG_REQ())) { |
| 575 | setverdict(fail, "Failed to match Packet Paging Request: ", dl_block, " vs ", tr_RLCMAC_PACKET_PAG_REQ()); |
| 576 | mtc.stop; |
| 577 | } |
| 578 | } |
| 579 | |
| 580 | private function f_rlcmac_dl_block_verify_data_gprs(RlcmacDlBlock dl_block, uint32_t dl_fn, out uint32_t ack_fn, octetstring data, template (present) uint7_t exp_bsn := ?, template (present) CodingScheme exp_cs := ?) |
| 581 | { |
| 582 | log("verifying dl data block (gprs): ", dl_block); |
| 583 | |
| 584 | ack_fn := dl_fn + f_rrbp_fn_delay(dl_block.data.mac_hdr.mac_hdr.rrbp); |
| 585 | |
| 586 | if (not match(dl_block.data.mac_hdr.hdr_ext.bsn, exp_bsn)) { |
| 587 | setverdict(fail, "DL block BSN doesn't match: ", |
| 588 | dl_block.data.blocks[0].hdr.length_ind, " vs exp ", exp_bsn); |
| 589 | } |
| 590 | |
| 591 | if (lengthof(dl_block.data.blocks) < 1) { |
| 592 | setverdict(fail, "DL block has no LLC payload: ", dl_block); |
| 593 | mtc.stop; |
| 594 | } |
| 595 | |
| 596 | if (ispresent(dl_block.data.blocks[0].hdr) and dl_block.data.blocks[0].hdr.length_ind != lengthof(data)) { |
| 597 | setverdict(fail, "DL block has LLC header with wrong expected size: ", |
| 598 | dl_block.data.blocks[0].hdr.length_ind, " vs ", lengthof(data)); |
| 599 | mtc.stop; |
| 600 | } |
| 601 | |
| 602 | if (dl_block.data.blocks[0].payload != data) { |
| 603 | setverdict(fail, "Failed to match content of LLC payload in DL Block: ", dl_block, " vs ", data); |
| 604 | mtc.stop; |
| 605 | } |
| 606 | |
| 607 | /* Check next data blocks contain dummy frames */ |
| 608 | if (lengthof(dl_block.data.blocks) > 1 and substr(dl_block.data.blocks[1].payload, 0, 3) != '43C001'O) { |
| 609 | setverdict(fail, "Second data payload is not a dummy frame: ", dl_block.data.blocks[1].payload); |
| 610 | mtc.stop; |
| 611 | } |
| 612 | |
| 613 | /* TODO: check exp_cs */ |
| 614 | } |
| 615 | |
| 616 | private function f_rlcmac_dl_block_verify_data_egprs(RlcmacDlBlock dl_block, uint32_t dl_fn, out uint32_t ack_fn, octetstring data, template (present) uint14_t exp_bsn := ?, template (present) CodingScheme exp_cs := ?) |
| 617 | { |
| 618 | log("verifying dl data block (egprs): ", dl_block); |
| 619 | |
| 620 | ack_fn := dl_fn + f_rrbp_fn_delay(dl_block.data_egprs.mac_hdr.rrbp); |
| 621 | |
| 622 | if (not match(dl_block.data_egprs.mac_hdr.bsn1, exp_bsn)) { |
| 623 | setverdict(fail, "DL block BSN doesn't match: ", |
| 624 | dl_block.data_egprs.blocks[0].hdr.length_ind, " vs exp ", exp_bsn); |
| 625 | } |
| 626 | |
| 627 | if (lengthof(dl_block.data_egprs.blocks) < 1) { |
| 628 | setverdict(fail, "DL block has no LLC payload: ", dl_block); |
| 629 | mtc.stop; |
| 630 | } |
| 631 | |
| 632 | if (ispresent(dl_block.data_egprs.blocks[0].hdr) and dl_block.data_egprs.blocks[0].hdr.length_ind != lengthof(data)) { |
| 633 | setverdict(fail, "DL block has LLC header with wrong expected size: ", |
| 634 | dl_block.data_egprs.blocks[0].hdr.length_ind, " vs ", lengthof(data)); |
| 635 | mtc.stop; |
| 636 | } |
| 637 | |
| 638 | if (dl_block.data_egprs.blocks[0].payload != data) { |
| 639 | setverdict(fail, "Failed to match content of LLC payload in DL Block: ", dl_block, " vs ", data); |
| 640 | mtc.stop; |
| 641 | } |
| 642 | |
| 643 | /* Check next data blocks contain dummy frames */ |
| 644 | if (lengthof(dl_block.data_egprs.blocks) > 1 and substr(dl_block.data_egprs.blocks[1].payload, 0, 3) != '43C001'O) { |
| 645 | setverdict(fail, "Second data payload is not a dummy frame: ", dl_block.data.blocks[1].payload); |
| 646 | mtc.stop; |
| 647 | } |
| 648 | |
| 649 | /* TODO: Check exp_cs. In the case of EGPRS, first check mac_hdr.header_type and then decode CPS = exp_cs based on mac_hdr.header_type. |
| 650 | See wireshark's egprs_Header_type1_coding_puncturing_scheme_to_mcs. */ |
| 651 | } |
| 652 | |
| 653 | private function f_rx_rlcmac_dl_block_exp_data(out RlcmacDlBlock dl_block, out uint32_t ack_fn, octetstring data, template (present) uint7_t exp_bsn := ?, template (present) CodingScheme exp_cs := ?) |
| 654 | runs on RAW_PCU_Test_CT { |
| 655 | var PCUIF_Message pcu_msg; |
| 656 | var uint32_t dl_fn; |
| 657 | var boolean is_egprs := false; |
| 658 | var template RlcmacDlBlock dl_template := tr_RLCMAC_DATA_RRBP; |
| 659 | dl_template.data.blocks := ?; |
| 660 | |
| 661 | f_rx_rlcmac_dl_block(dl_block, dl_fn); |
| 662 | if (not match(dl_block, dl_template)) { |
| 663 | dl_template := tr_RLCMAC_DATA_EGPRS; |
| 664 | dl_template.data_egprs.blocks := ?; |
| 665 | if (not match(dl_block, dl_template)) { |
| 666 | setverdict(fail, "Failed to match Packet data: ", dl_block, " vs ", dl_template); |
| 667 | mtc.stop; |
| 668 | } |
| 669 | is_egprs := true; |
| 670 | } |
| 671 | |
| 672 | if (is_egprs) { |
| 673 | f_rlcmac_dl_block_verify_data_egprs(dl_block, dl_fn, ack_fn, data, exp_bsn, exp_cs); |
| 674 | } else { |
| 675 | f_rlcmac_dl_block_verify_data_gprs(dl_block, dl_fn, ack_fn, data, exp_bsn, exp_cs); |
| 676 | } |
| 677 | } |
| 678 | |
| 679 | testcase TC_pcuif_suspend() runs on RAW_PCU_Test_CT { |
| 680 | var octetstring ra_id := enc_RoutingAreaIdentification(mp_gb_cfg.cell_id.ra_id); |
| 681 | var GprsTlli tlli := 'FFFFFFFF'O; |
| 682 | timer T; |
| 683 | |
| 684 | /* Initialize NS/BSSGP side */ |
| 685 | f_init_bssgp(); |
| 686 | |
| 687 | /* Initialize the PCU interface abstraction */ |
| 688 | f_init_raw(testcasename()); |
| 689 | |
| 690 | /* Establish BSSGP connection to the PCU */ |
| 691 | f_bssgp_establish(); |
| 692 | |
| 693 | BTS.send(ts_PCUIF_SUSP_REQ(0, tlli, ra_id, 0)); |
| 694 | |
| 695 | T.start(2.0); |
| 696 | alt { |
| 697 | [] BSSGP_SIG[0].receive(tr_BSSGP_SUSPEND(tlli, mp_gb_cfg.cell_id.ra_id)) { |
| 698 | setverdict(pass); |
| 699 | } |
| 700 | [] T.timeout { |
| 701 | setverdict(fail, "Timeout waiting for BSSGP SUSPEND"); |
| 702 | } |
| 703 | } |
| 704 | } |
| 705 | |
| 706 | /* Test of correct Timing Advance at the time of TBF establishment |
| 707 | * (derived from timing offset of the Access Burst). */ |
| 708 | testcase TC_ta_rach_imm_ass() runs on RAW_PCU_Test_CT { |
| 709 | var GsmRrMessage rr_msg; |
| 710 | var boolean ok; |
| 711 | |
| 712 | /* Initialize the PCU interface abstraction */ |
| 713 | f_init_raw(testcasename()); |
| 714 | |
| 715 | /* We cannot send too many TBF requests in a short time because |
| 716 | * at some point the PCU will fail to allocate a new TBF. */ |
| 717 | for (var TimingAdvance ta := 0; ta < 64; ta := ta + 16) { |
| 718 | /* Establish an Uplink TBF (send RACH.ind with current TA) */ |
| 719 | ok := f_establish_tbf(rr_msg, bts_nr := 0, ta := ta); |
| 720 | if (not ok) { |
| 721 | setverdict(fail, "Failed to establish an Uplink TBF"); |
| 722 | mtc.stop; |
| 723 | } |
| 724 | |
| 725 | /* Make sure Timing Advance IE matches out expectations */ |
| 726 | if (match(rr_msg, tr_IMM_TBF_ASS(dl := false, ta := ta))) { |
| 727 | setverdict(pass); |
| 728 | } |
| 729 | } |
| 730 | } |
| 731 | |
| 732 | /* Verify Timing Advance value(s) indicated during the packet Downlink assignment |
| 733 | * procedure as per 3GPP TS 44.018, section 3.5.3. There seems to be a bug in the |
| 734 | * IUT that causes it to send an unreasonable Timing Advance value > 0 despite |
| 735 | * no active TBF exists at the moment of establishment (idle mode). */ |
| 736 | testcase TC_ta_idle_dl_tbf_ass() runs on RAW_PCU_Test_CT { |
| 737 | var OCT4 tlli := f_rnd_octstring(4); |
| 738 | var GsmRrMessage rr_imm_ass; |
| 739 | |
| 740 | /* Initialize NS/BSSGP side */ |
| 741 | f_init_bssgp(); |
| 742 | |
| 743 | /* Initialize the PCU interface abstraction */ |
| 744 | f_init_raw(testcasename()); |
| 745 | |
| 746 | /* Establish BSSGP connection to the PCU */ |
| 747 | f_bssgp_establish(); |
| 748 | f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); |
| 749 | |
| 750 | /* SGSN sends some DL data, PCU will initiate Packet Downlink |
| 751 | * Assignment on CCCH (PCH). We don't care about the payload. */ |
| 752 | BSSGP[0].send(ts_BSSGP_DL_UD(tlli, f_rnd_octstring(10))); |
| 753 | f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); // TODO: match by TLLI! |
| 754 | |
| 755 | /* Make sure that Timing Advance is 0 (the actual value is not known yet). |
| 756 | * As per 3GPP S 44.018, section 3.5.3.1.2, the network *shall* initiate |
| 757 | * the procedures defined in 3GPP TS 44.060 or use the polling mechanism. */ |
| 758 | if (not match(rr_imm_ass, tr_IMM_TBF_ASS(ta := 0))) { |
| 759 | setverdict(fail, "Timing Advance value doesn't match"); |
| 760 | mtc.stop; |
| 761 | } |
| 762 | } |
| 763 | |
| 764 | /* Verify that the PCU generates valid PTCCH/D messages |
| 765 | * while neither Uplink nor Downlink TBF is established. */ |
| 766 | testcase TC_ta_ptcch_idle() runs on RAW_PCU_Test_CT { |
| 767 | var PTCCHDownlinkMsg ptcch_msg; |
| 768 | var PCUIF_Message pcu_msg; |
| 769 | timer T; |
| 770 | |
| 771 | /* Initialize the PCU interface abstraction */ |
| 772 | f_init_raw(testcasename()); |
| 773 | |
| 774 | /* Sent an RTS.req for PTCCH/D */ |
| 775 | BTS.send(ts_PCUIF_RTS_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, |
| 776 | sapi := PCU_IF_SAPI_PTCCH, fn := 0, |
| 777 | arfcn := 871, block_nr := 0)); |
| 778 | T.start(5.0); |
| 779 | alt { |
| 780 | [] BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, |
| 781 | sapi := PCU_IF_SAPI_PTCCH)) -> value pcu_msg { |
| 782 | log("Rx DATA.req message: ", pcu_msg); |
| 783 | setverdict(pass); |
| 784 | } |
| 785 | [] BTS.receive(PCUIF_Message:?) { repeat; } |
| 786 | [] T.timeout { |
| 787 | setverdict(fail, "Timeout waiting for a PTCCH/D block"); |
| 788 | mtc.stop; |
| 789 | } |
| 790 | } |
| 791 | |
| 792 | ptcch_msg := dec_PTCCHDownlinkMsg(pcu_msg.u.data_req.data); |
| 793 | log("Decoded PTCCH/D message: ", ptcch_msg); |
| 794 | |
| 795 | /* Make sure the message is encoded correctly |
| 796 | * TODO: do we expect all TA values to be equal '1111111'B? */ |
| 797 | if (not match(ptcch_msg, tr_PTCCHDownlinkMsg)) { |
| 798 | setverdict(fail, "Malformed PTCCH/D message"); |
| 799 | mtc.stop; |
| 800 | } |
| 801 | } |
| 802 | |
| 803 | /* Test of correct Timing Advance during an active Uplink TBF. |
| 804 | * |
| 805 | * Unlike the circuit-switched domain, Uplink transmissions on PDCH time-slots |
| 806 | * are not continuous and there can be long time gaps between them. This happens |
| 807 | * due to a bursty nature of packet data. The actual Timing Advance of a MS may |
| 808 | * significantly change between such rare Uplink transmissions, so GPRS introduces |
| 809 | * additional mechanisms to control Timing Advance, and thus reduce interference |
| 810 | * between neighboring TDMA time-slots. |
| 811 | * |
| 812 | * At the moment of Uplink TBF establishment, initial Timing Advance is measured |
| 813 | * from ToA (Timing of Arrival) of an Access Burst. This is covered by another |
| 814 | * test case - TC_ta_rach_imm_ass. In response to that Access Burst the network |
| 815 | * sends Immediate Assignment on AGCH, which _may_ contain Timing Advance Index |
| 816 | * among with the initial Timing Advance value. And here PTCCH comes to play. |
| 817 | * |
| 818 | * PTCCH is a unidirectional channel on which the network can instruct a sub-set |
| 819 | * of 16 MS (whether TBFs are active or not) to adjust their Timing Advance |
| 820 | * continuously. To ensure continuous measurements of the signal propagation |
| 821 | * delay, the MSs shall transmit Access Bursts on Uplink (PTCCH/U) on sub-slots |
| 822 | * defined by an assigned Timing Advance Index (see 3GPP TS 45.002). |
| 823 | * |
| 824 | * The purpose of this test case is to verify the assignment of Timing Advance |
| 825 | * Index, and the process of Timing Advance notification on PTCCH/D. The MTC |
| 826 | * first establishes several Uplink TBFs, but does not transmit any Uplink |
| 827 | * blocks on them. During 4 TDMA multi-frame periods the MTC is sending RACH |
| 828 | * indications to the PCU, checking the correctness of two received PTCCH/D |
| 829 | * messages (period of PTCCH/D is two multi-frames). |
| 830 | */ |
| 831 | |
| 832 | /* List of ToA values for Access Bursts to be sent on PTCCH/U, |
| 833 | * each ToA (Timing of Arrival) value is in units of 1/4 of |
| 834 | * a symbol (i.e. 1 symbol is 4 QTA units). */ |
| 835 | type record length(16) of int16_t PTCCH_TAI_ToA_MAP; |
| 836 | const PTCCH_TAI_ToA_MAP ptcch_toa_map_def := { |
| 837 | 0, 0, 0, 0, |
| 838 | 0, 0, 0, 0, |
| 839 | 0, 0, 0, 0, |
| 840 | 0, 0, 0, 0 |
| 841 | }; |
| 842 | |
| 843 | private altstep as_ta_ptcch(uint8_t bts_nr := 0, uint8_t trx_nr := 0, uint8_t ts_nr := 7, |
| 844 | in PTCCH_TAI_ToA_MAP toa_map := ptcch_toa_map_def) |
| 845 | runs on RAW_PCU_Test_CT { |
| 846 | var RAW_PCU_Event event; |
| 847 | var integer ss; |
| 848 | |
| 849 | /* Send Access Bursts on PTCCH/U for every TA Index */ |
| 850 | [] BTS.receive(tr_RAW_PCU_EV(TDMA_EV_PTCCH_UL_BURST)) -> value event { |
| 851 | ss := f_tdma_ptcch_fn2ss(event.data.tdma_fn); |
| 852 | if (ss < 0) { mtc.stop; } /* Shall not happen */ |
| 853 | |
| 854 | log("Sending an Access Burst on PTCCH/U", |
| 855 | ", sub-slot=", ss, " (TAI)", |
| 856 | ", fn=", event.data.tdma_fn, |
| 857 | ", ToA=", toa_map[ss], " (QTA)"); |
| 858 | /* TODO: do we care about RA and burst format? */ |
| 859 | BTS.send(ts_PCUIF_RACH_IND(bts_nr, trx_nr, ts_nr, |
| 860 | ra := oct2int('3A'O), |
| 861 | is_11bit := 0, |
| 862 | burst_type := BURST_TYPE_0, |
| 863 | fn := event.data.tdma_fn, |
| 864 | arfcn := 871, |
| 865 | qta := toa_map[ss], |
| 866 | sapi := PCU_IF_SAPI_PTCCH)); |
| 867 | repeat; |
| 868 | } |
| 869 | } |
| 870 | |
| 871 | private function f_TC_ta_ptcch_ul_multi_tbf(in PTCCH_TAI_ToA_MAP ptcch_toa_map, |
| 872 | template PTCCHDownlinkMsg t_ta_msg) |
| 873 | runs on RAW_PCU_Test_CT { |
| 874 | var PTCCHDownlinkMsg ta_msg; |
| 875 | var PCUIF_Message pcu_msg; |
| 876 | timer T; |
| 877 | |
| 878 | /* First, send an RTS.req for the upcoming PTCCH/D block */ |
| 879 | BTS.send(ts_PCUIF_RTS_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, |
| 880 | sapi := PCU_IF_SAPI_PTCCH, fn := 0, |
| 881 | arfcn := 871, block_nr := 0)); |
| 882 | T.start(2.0); |
| 883 | alt { |
| 884 | /* Keep sending of Access Bursts during two multi-frames (period of PTCCH/D) |
| 885 | * with increasing ToA (Timing of Arrival) values: 0, 7, 14, 28, 35... */ |
| 886 | [] as_ta_ptcch(bts_nr := 0, trx_nr := 0, ts_nr := 7, toa_map := ptcch_toa_map); |
| 887 | /* In the end of 2nd multi-frame we should receive a PTCCH/D block */ |
| 888 | [] BTS.receive(tr_PCUIF_DATA_REQ(bts_nr := 0, trx_nr := 0, ts_nr := 7, |
| 889 | sapi := PCU_IF_SAPI_PTCCH)) -> value pcu_msg { |
| 890 | ta_msg := dec_PTCCHDownlinkMsg(pcu_msg.u.data_req.data); |
| 891 | log("Rx PTCCH/D message: ", ta_msg); |
| 892 | |
| 893 | /* Make sure Timing Advance values match our expectations */ |
| 894 | if (match(ta_msg, t_ta_msg)) { |
| 895 | setverdict(pass); |
| 896 | } else { |
| 897 | setverdict(fail, "PTCCH/D message does not match: ", t_ta_msg); |
| 898 | } |
| 899 | } |
| 900 | [] BTS.receive { repeat; } |
| 901 | [] T.timeout { |
| 902 | setverdict(fail, "Timeout waiting for a PTCCH/D block"); |
| 903 | mtc.stop; |
| 904 | } |
| 905 | } |
| 906 | } |
| 907 | |
| 908 | testcase TC_ta_ptcch_ul_multi_tbf() runs on RAW_PCU_Test_CT { |
| 909 | var template PacketUlAssign t_ul_tbf_ass; |
| 910 | var PacketUlAssign ul_tbf_ass[7]; |
| 911 | var GsmRrMessage rr_msg[7]; |
| 912 | var boolean ok; |
| 913 | |
| 914 | /* Initialize the PCU interface abstraction */ |
| 915 | f_init_raw(testcasename()); |
| 916 | |
| 917 | /* Enable forwarding of PTCCH/U TDMA events to us */ |
| 918 | BTS.send(ts_RAW_PCU_CMD(TDMA_CMD_ENABLE_PTCCH_UL_FWD)); |
| 919 | |
| 920 | /* Establish 7 Uplink TBFs (USF flag is 3 bits long, '111'B is reserved) */ |
| 921 | for (var integer i := 0; i < 7; i := i + 1) { |
| 922 | ok := f_establish_tbf(rr_msg[i], ta := 0); |
| 923 | if (not ok) { |
| 924 | setverdict(fail, "Failed to establish an Uplink TBF #", i); |
| 925 | mtc.stop; |
| 926 | } |
| 927 | |
| 928 | /* Make sure we received an UL TBF Assignment */ |
| 929 | if (match(rr_msg[i], tr_IMM_TBF_ASS(dl := false, rest := tr_IaRestOctets_ULAss(?)))) { |
| 930 | ul_tbf_ass[i] := rr_msg[i].payload.imm_ass.rest_octets.hh.pa.uldl.ass.ul; |
| 931 | log("Rx Uplink TBF assignment for #", i, ": ", ul_tbf_ass[i]); |
| 932 | } else { |
| 933 | setverdict(fail, "Failed to match UL TBF Assignment for #", i); |
| 934 | mtc.stop; |
| 935 | } |
| 936 | |
| 937 | /* We expect incremental TFI/USF assignment (dynamic allocation) */ |
| 938 | t_ul_tbf_ass := tr_PacketUlDynAssign(tfi := i, usf := i); |
| 939 | if (not match(ul_tbf_ass[i], t_ul_tbf_ass)) { |
| 940 | setverdict(fail, "Failed to match Packet Uplink Assignment for #", i); |
| 941 | mtc.stop; |
| 942 | } |
| 943 | |
| 944 | /* We also expect Timing Advance Index to be a part of the assignment */ |
| 945 | if (ul_tbf_ass[i].dynamic.ta_index != i) { |
| 946 | setverdict(fail, "Failed to match Timing Advance Index for #", i); |
| 947 | /* Keep going, the current OsmoPCU does not assign TA Index */ |
| 948 | } |
| 949 | } |
| 950 | |
| 951 | /* Prepare a list of ToA values for Access Bursts to be sent on PTCCH/U */ |
| 952 | var PTCCH_TAI_ToA_MAP toa_map := ptcch_toa_map_def; |
| 953 | for (var integer i := 0; i < 7; i := i + 1) { |
| 954 | /* ToA in units of 1/4 of a symbol */ |
| 955 | toa_map[i] := (i + 1) * 7 * 4; |
| 956 | } |
| 957 | |
| 958 | /* Now we have all 7 TBFs established in one-phase access mode, |
| 959 | * however we will not be sending any data on them. Instead, we |
| 960 | * will be sending RACH.ind on PTCCH/U during 4 multi-frame |
| 961 | * periods (TAI 0..8), and then will check two PTCCH/D blocks. |
| 962 | * |
| 963 | * Why not 4 TBFs at once? Because Uplink is delayed by 3 TDMA |
| 964 | * time-slots, so at the moment of scheduling a PTCCH/D block |
| 965 | * the PCU has odd number of PTCCH/U Access Bursts received. */ |
| 966 | f_TC_ta_ptcch_ul_multi_tbf(toa_map, tr_PTCCHDownlinkMsg( |
| 967 | tai0_ta := 7, tai1_ta := 14, tai2_ta := 21, |
| 968 | /* Other values are not known (yet) */ |
| 969 | tai3_ta := ?)); |
| 970 | f_TC_ta_ptcch_ul_multi_tbf(toa_map, tr_PTCCHDownlinkMsg( |
| 971 | tai0_ta := 7, tai1_ta := 14, tai2_ta := 21, |
| 972 | tai3_ta := 28, tai4_ta := 35, tai5_ta := 42, |
| 973 | /* Other values are out of our interest */ |
| 974 | tai6_ta := ?)); |
| 975 | } |
| 976 | |
| 977 | /* Default link quality adaptation (Coding Scheme) ranges (inclusive). |
| 978 | * OsmoPCU (VTY): cs link-quality-ranges cs1 6 cs2 5 8 cs3 7 13 cs4 12 |
| 979 | * |
| 980 | * NOTE: the ranges are intentionally overlapping because OsmoPCU |
| 981 | * does not change CS/MCS on the range borders (5-6, 7-8, 12-13). */ |
| 982 | private template integer CS1_lqual_dB_range := (-infinity .. 6); |
| 983 | private template integer CS2_lqual_dB_range := (5 .. 8); |
| 984 | private template integer CS3_lqual_dB_range := (7 .. 13); |
| 985 | private template integer CS4_lqual_dB_range := (12 .. infinity); |
| 986 | |
| 987 | testcase TC_cs_lqual_ul_tbf() runs on RAW_PCU_Test_CT { |
| 988 | var GsmRrMessage rr_imm_ass; |
| 989 | var PacketUlAssign ul_tbf_ass; |
| 990 | var RlcmacDlBlock dl_block; |
| 991 | var PCUIF_Message pcu_msg; |
| 992 | var octetstring data; |
| 993 | var boolean ok; |
| 994 | var uint32_t unused_fn; |
| 995 | |
| 996 | /* Initialize the PCU interface abstraction */ |
| 997 | f_init_raw(testcasename()); |
| 998 | |
| 999 | f_pcuvty_set_allowed_cs_mcs(); |
| 1000 | f_pcuvty_set_link_quality_ranges(); |
| 1001 | |
| 1002 | /* Establish an Uplink TBF */ |
| 1003 | ok := f_establish_tbf(rr_imm_ass); |
| 1004 | if (not ok) { |
| 1005 | setverdict(fail, "Failed to establish TBF"); |
| 1006 | mtc.stop; |
| 1007 | } |
| 1008 | |
| 1009 | ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); |
| 1010 | if (not ok) { |
| 1011 | setverdict(fail, "Immediate Assignment not an Uplink TBF"); |
| 1012 | mtc.stop; |
| 1013 | } |
| 1014 | |
| 1015 | var template (value) RlcmacUlBlock ul_data := t_RLCMAC_UL_DATA( |
| 1016 | tfi := ul_tbf_ass.dynamic.tfi_assignment, |
| 1017 | cv := 15, /* 16 UL blocks to be sent (to be overridden in loop) */ |
| 1018 | bsn := 0, /* TODO: what should be here? */ |
| 1019 | blocks := { /* To be generated in loop */ }); |
| 1020 | |
| 1021 | /* HACK: patch missing TLLI; otherwise OsmoPCU rejects DATA.req */ |
| 1022 | ul_data.data.tlli := '00000001'O; |
| 1023 | |
| 1024 | /* The actual / old link quality values. We need to keep track of the old |
| 1025 | * (basically previous) link quality value, because OsmoPCU actually |
| 1026 | * changes the coding scheme if not only the actual, but also the old |
| 1027 | * value leaves the current link quality range (window). */ |
| 1028 | var integer lqual := 0; |
| 1029 | var integer lqual_old; |
| 1030 | |
| 1031 | /* 16 UL blocks (0 .. 15 dB, step = 1 dB) */ |
| 1032 | for (var integer i := 0; i < 16; i := i + 1) { |
| 1033 | /* Prepare a new UL block (CV, random payload) */ |
| 1034 | ul_data.data.mac_hdr.countdown := (15 - i); |
| 1035 | ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; |
| 1036 | |
| 1037 | /* Update the old / actual link quality */ |
| 1038 | lqual_old := lqual; |
| 1039 | lqual := i; |
| 1040 | |
| 1041 | /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ |
| 1042 | log("Sending DATA.ind with link quality (dB): ", lqual); |
| 1043 | f_tx_rlcmac_ul_block(ul_data, lqual * 10); |
| 1044 | |
| 1045 | /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ |
| 1046 | f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); |
| 1047 | |
| 1048 | log("Rx Packet Uplink ACK / NACK with Channel Coding Command: ", |
| 1049 | dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd); |
| 1050 | |
| 1051 | /* Match the received Channel Coding Command. Since we are increasing |
| 1052 | * the link quality value on each iteration and not decreasing, there |
| 1053 | * is no need to check the both old and current link quality values. */ |
| 1054 | var template ChCodingCommand ch_coding; |
| 1055 | select (lqual_old) { |
| 1056 | case (CS1_lqual_dB_range) { ch_coding := CH_CODING_CS1; } |
| 1057 | case (CS2_lqual_dB_range) { ch_coding := CH_CODING_CS2; } |
| 1058 | case (CS3_lqual_dB_range) { ch_coding := CH_CODING_CS3; } |
| 1059 | case (CS4_lqual_dB_range) { ch_coding := CH_CODING_CS4; } |
| 1060 | } |
| 1061 | |
| 1062 | if (not match(dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd, ch_coding)) { |
| 1063 | setverdict(fail, "Channel Coding does not match our expectations: ", ch_coding); |
| 1064 | } else { |
| 1065 | setverdict(pass); |
| 1066 | } |
| 1067 | } |
| 1068 | } |
| 1069 | |
| 1070 | /* Test the max UL CS set by VTY works fine */ |
| 1071 | testcase TC_cs_initial_ul() runs on RAW_PCU_Test_CT { |
| 1072 | var GsmRrMessage rr_imm_ass; |
| 1073 | var PacketUlAssign ul_tbf_ass; |
| 1074 | var RlcmacDlBlock dl_block; |
| 1075 | var boolean ok; |
| 1076 | var integer lqual_cb; |
| 1077 | var ChCodingCommand last_ch_coding; |
| 1078 | var uint32_t unused_fn; |
| 1079 | |
| 1080 | /* Initialize the PCU interface abstraction */ |
| 1081 | f_init_raw(testcasename()); |
| 1082 | |
| 1083 | /* Set initial UL CS to 3 */ |
| 1084 | g_cs_initial_ul := 3; |
| 1085 | f_pcuvty_set_allowed_cs_mcs(); |
| 1086 | f_pcuvty_set_link_quality_ranges(); |
| 1087 | |
| 1088 | /* Take lqual (dB->cB) so that we stay in that CS */ |
| 1089 | lqual_cb := g_cs_lqual_ranges[2].low * 10; |
| 1090 | |
| 1091 | /* Establish an Uplink TBF */ |
| 1092 | ok := f_establish_tbf(rr_imm_ass); |
| 1093 | if (not ok) { |
| 1094 | setverdict(fail, "Failed to establish TBF"); |
| 1095 | mtc.stop; |
| 1096 | } |
| 1097 | |
| 1098 | ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); |
| 1099 | if (not ok) { |
| 1100 | setverdict(fail, "Immediate Assignment not an Uplink TBF"); |
| 1101 | mtc.stop; |
| 1102 | } |
| 1103 | |
| 1104 | var template (value) RlcmacUlBlock ul_data := t_RLCMAC_UL_DATA( |
| 1105 | tfi := ul_tbf_ass.dynamic.tfi_assignment, |
| 1106 | cv := 3, /* 8 UL blocks to be sent (to be overridden in loop) */ |
| 1107 | bsn := 0, /* TODO: what should be here? */ |
| 1108 | blocks := { /* To be generated in loop */ }); |
| 1109 | |
| 1110 | /* HACK: patch missing TLLI; otherwise OsmoPCU rejects DATA.req */ |
| 1111 | ul_data.data.tlli := '00000001'O; |
| 1112 | |
| 1113 | /* 3 UL blocks, check we are in same initial CS: */ |
| 1114 | for (var integer i := 0; i < 3; i := i + 1) { |
| 1115 | /* Prepare a new UL block (CV, random payload) */ |
| 1116 | ul_data.data.mac_hdr.countdown := (7 - i); |
| 1117 | ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; |
| 1118 | |
| 1119 | /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ |
| 1120 | f_tx_rlcmac_ul_block(ul_data, lqual_cb); |
| 1121 | |
| 1122 | /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ |
| 1123 | f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); |
| 1124 | last_ch_coding := dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd; |
| 1125 | } |
| 1126 | |
| 1127 | if (last_ch_coding != CH_CODING_CS3) { |
| 1128 | setverdict(fail, "Channel Coding does not match our expectations (CS-3): ", last_ch_coding); |
| 1129 | mtc.stop; |
| 1130 | } |
| 1131 | |
| 1132 | setverdict(pass); |
| 1133 | |
| 1134 | /* Remaining UL blocks are used to make sure regardless of initial |
| 1135 | /* lqual, we can go lower at any time */ |
| 1136 | |
| 1137 | /* 5 UL blocks, check we are in same initial CS: */ |
| 1138 | for (var integer i := 3; i < 8; i := i + 1) { |
| 1139 | /* Prepare a new UL block (CV, random payload) */ |
| 1140 | ul_data.data.mac_hdr.countdown := (7 - i); |
| 1141 | ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; |
| 1142 | |
| 1143 | /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ |
| 1144 | f_tx_rlcmac_ul_block(ul_data, 0); /* 0 dB, make sure we downgrade CS */ |
| 1145 | |
| 1146 | /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ |
| 1147 | f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); |
| 1148 | |
| 1149 | last_ch_coding := dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd; |
| 1150 | } |
| 1151 | |
| 1152 | if (last_ch_coding != CH_CODING_CS1) { |
| 1153 | setverdict(fail, "Channel Coding does not match our expectations (CS-1): ", last_ch_coding); |
| 1154 | } else { |
| 1155 | setverdict(pass); |
| 1156 | } |
| 1157 | } |
| 1158 | |
| 1159 | /* Test the max UL CS set by VTY works fine */ |
| 1160 | testcase TC_cs_max_ul() runs on RAW_PCU_Test_CT { |
| 1161 | var GsmRrMessage rr_imm_ass; |
| 1162 | var PacketUlAssign ul_tbf_ass; |
| 1163 | var RlcmacDlBlock dl_block; |
| 1164 | var boolean ok; |
| 1165 | var ChCodingCommand last_ch_coding; |
| 1166 | var uint32_t unused_fn; |
| 1167 | |
| 1168 | /* Initialize the PCU interface abstraction */ |
| 1169 | f_init_raw(testcasename()); |
| 1170 | |
| 1171 | /* Set maximum allowed UL CS to 3 */ |
| 1172 | g_cs_max_ul := 3; |
| 1173 | f_pcuvty_set_allowed_cs_mcs(); |
| 1174 | f_pcuvty_set_link_quality_ranges(); |
| 1175 | |
| 1176 | /* Establish an Uplink TBF */ |
| 1177 | ok := f_establish_tbf(rr_imm_ass); |
| 1178 | if (not ok) { |
| 1179 | setverdict(fail, "Failed to establish TBF"); |
| 1180 | mtc.stop; |
| 1181 | } |
| 1182 | |
| 1183 | ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); |
| 1184 | if (not ok) { |
| 1185 | setverdict(fail, "Immediate Assignment not an Uplink TBF"); |
| 1186 | mtc.stop; |
| 1187 | } |
| 1188 | |
| 1189 | var template (value) RlcmacUlBlock ul_data := t_RLCMAC_UL_DATA( |
| 1190 | tfi := ul_tbf_ass.dynamic.tfi_assignment, |
| 1191 | cv := 15, /* 16 UL blocks to be sent (to be overridden in loop) */ |
| 1192 | bsn := 0, /* TODO: what should be here? */ |
| 1193 | blocks := { /* To be generated in loop */ }); |
| 1194 | |
| 1195 | /* HACK: patch missing TLLI; otherwise OsmoPCU rejects DATA.req */ |
| 1196 | ul_data.data.tlli := '00000001'O; |
| 1197 | |
| 1198 | /* 16 UL blocks */ |
| 1199 | for (var integer i := 0; i < 16; i := i + 1) { |
| 1200 | /* Prepare a new UL block (CV, random payload) */ |
| 1201 | ul_data.data.mac_hdr.countdown := (15 - i); |
| 1202 | ul_data.data.blocks := { valueof(t_RLCMAC_LLCBLOCK(f_rnd_octstring(10))) }; |
| 1203 | |
| 1204 | /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */ |
| 1205 | f_tx_rlcmac_ul_block(ul_data, 40*10); /* 40 dB */ |
| 1206 | |
| 1207 | /* Enqueue RTS.req, expect DATA.req with UL ACK from the PCU */ |
| 1208 | f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); |
| 1209 | |
| 1210 | last_ch_coding := dl_block.ctrl.payload.u.ul_ack_nack.gprs.ch_coding_cmd; |
| 1211 | } |
| 1212 | |
| 1213 | if (last_ch_coding != CH_CODING_CS3) { |
| 1214 | setverdict(fail, "Channel Coding does not match our expectations (CS-3): ", last_ch_coding); |
| 1215 | } else { |
| 1216 | setverdict(pass); |
| 1217 | } |
| 1218 | } |
| 1219 | |
| 1220 | /* Verify PCU drops TBF after some time of inactivity. */ |
| 1221 | testcase TC_t3169() runs on RAW_PCU_Test_CT { |
| 1222 | var PCUIF_info_ind info_ind; |
| 1223 | var GsmRrMessage rr_imm_ass; |
| 1224 | var PacketUlAssign ul_tbf_ass; |
| 1225 | var RlcmacDlBlock dl_block; |
| 1226 | var PCUIF_Message pcu_msg; |
| 1227 | var octetstring data; |
| 1228 | var boolean ok; |
| 1229 | var uint32_t unused_fn; |
| 1230 | var OCT4 tlli := '00000001'O; |
| 1231 | |
| 1232 | /* Initialize NS/BSSGP side */ |
| 1233 | f_init_bssgp(); |
| 1234 | |
| 1235 | info_ind := valueof(ts_PCUIF_INFO_default); |
| 1236 | /* Set timer to 1 sec (default 5) to speedup test: */ |
| 1237 | info_ind.t3169 := 1; |
| 1238 | |
| 1239 | /* Initialize the PCU interface abstraction */ |
| 1240 | f_init_raw(testcasename(), info_ind); |
| 1241 | |
| 1242 | /* Establish BSSGP connection to the PCU */ |
| 1243 | f_bssgp_establish(); |
| 1244 | f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); |
| 1245 | |
| 1246 | /* Establish an Uplink TBF */ |
| 1247 | ok := f_establish_tbf(rr_imm_ass); |
| 1248 | if (not ok) { |
| 1249 | setverdict(fail, "Failed to establish TBF"); |
| 1250 | mtc.stop; |
| 1251 | } |
| 1252 | |
| 1253 | ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); |
| 1254 | if (not ok) { |
| 1255 | setverdict(fail, "Immediate Assignment not an Uplink TBF"); |
| 1256 | mtc.stop; |
| 1257 | } |
| 1258 | |
| 1259 | /* Send one UL block and make sure it is ACKED fine */ |
| 1260 | f_tx_rlcmac_ul_n_blocks(ul_tbf_ass, 1); |
| 1261 | f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, unused_fn); |
| 1262 | /* UL block should be received in SGSN */ |
| 1263 | BSSGP[0].receive(tr_BSSGP_UL_UD(tlli, mp_gb_cfg.cell_id)); |
| 1264 | |
| 1265 | /* Wait until T3169 fires (plus 1 extra sec to make sure) */ |
| 1266 | f_sleep(int2float(info_ind.t3169) + 1.0); |
| 1267 | |
| 1268 | /* Send an UL block once again, the TBF should be gone by now so no ACK */ |
| 1269 | f_tx_rlcmac_ul_n_blocks(ul_tbf_ass, 1); |
| 1270 | f_rx_rlcmac_dl_block_exp_dummy(dl_block); |
| 1271 | } |
| 1272 | |
| 1273 | /* Verify that a Downlink TBF can be assigned using PACCH shortly after the |
| 1274 | * release of prev DL TBF due to MS staying in PDCH for a while (T3192, in PCU |
| 1275 | * T3193) after DL TBF release */ |
| 1276 | testcase TC_t3193() runs on RAW_PCU_Test_CT { |
| 1277 | var GsmRrMessage rr_imm_ass; |
| 1278 | var PacketDlAssign dl_tbf_ass; |
| 1279 | var RlcmacDlBlock dl_block; |
| 1280 | var octetstring data := f_rnd_octstring(10); |
| 1281 | var boolean ok; |
| 1282 | var uint32_t sched_fn; |
| 1283 | var OCT4 tlli := '00000001'O; |
| 1284 | var AckNackDescription ack_nack_desc := valueof(t_AckNackDescription_init); |
| 1285 | |
| 1286 | /* Initialize NS/BSSGP side */ |
| 1287 | f_init_bssgp(); |
| 1288 | |
| 1289 | /* Initialize the PCU interface abstraction */ |
| 1290 | f_init_raw(testcasename()); |
| 1291 | |
| 1292 | /* Establish BSSGP connection to the PCU */ |
| 1293 | f_bssgp_establish(); |
| 1294 | f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); |
| 1295 | |
| 1296 | /* SGSN sends some DL data, PCU will page on CCCH (PCH) */ |
| 1297 | BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data)); |
| 1298 | f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); |
| 1299 | ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); |
| 1300 | if (not ok) { |
| 1301 | setverdict(fail, "Immediate Assignment not a Downlink TBF"); |
| 1302 | mtc.stop; |
| 1303 | } |
| 1304 | /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ |
| 1305 | f_sleep(X2002); |
| 1306 | f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0); |
| 1307 | |
| 1308 | /* ACK the DL block */ |
| 1309 | f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); |
| 1310 | f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); |
| 1311 | /* we are done with the DL-TBF here so far, let's clean up our local state: */ |
| 1312 | ack_nack_desc := valueof(t_AckNackDescription_init) |
| 1313 | |
| 1314 | /* Now that final DL block is ACKED and TBF is released, T3193 in PCU |
| 1315 | (T3192 in MS) was started and until it fires the MS will be abailable |
| 1316 | on PDCH in case new data arrives from SGSN. Let's verify it: */ |
| 1317 | BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data)); |
| 1318 | f_rx_rlcmac_dl_block_exp_pkt_ass(dl_block, sched_fn); |
| 1319 | f_tx_rlcmac_ul_block(ts_RLCMAC_CTRL_ACK(tlli), 0, sched_fn); |
| 1320 | |
| 1321 | /* Now that we confirmed the new assignment in the dl-tbf, lets receive the data and ack it */ |
| 1322 | f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0); |
| 1323 | f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); |
| 1324 | f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); |
| 1325 | } |
| 1326 | |
| 1327 | /* Test scenario where MS wants to send some data on PDCH against SGSN and it is |
| 1328 | * answered, so TBFs for uplink and later for downlink are created. |
| 1329 | */ |
| 1330 | private function f_TC_mo_ping_pong(template (omit) MSRadioAccessCapabilityV ms_racap := omit, template (present) CodingScheme exp_cs_mcs := ?) runs on RAW_PCU_Test_CT { |
| 1331 | var GsmRrMessage rr_imm_ass; |
| 1332 | var PacketUlAssign ul_tbf_ass; |
| 1333 | var PacketDlAssign dl_tbf_ass; |
| 1334 | var RlcmacDlBlock dl_block; |
| 1335 | var PCUIF_Message pcu_msg; |
| 1336 | var octetstring data := f_rnd_octstring(10); |
| 1337 | var boolean ok; |
| 1338 | var uint32_t sched_fn; |
| 1339 | var OCT4 tlli := '00000001'O; |
| 1340 | var AckNackDescription ack_nack_desc := valueof(t_AckNackDescription_init); |
| 1341 | |
| 1342 | /* Initialize NS/BSSGP side */ |
| 1343 | f_init_bssgp(); |
| 1344 | |
| 1345 | /* Initialize the PCU interface abstraction */ |
| 1346 | f_init_raw(testcasename()); |
| 1347 | |
| 1348 | /* Establish BSSGP connection to the PCU */ |
| 1349 | f_bssgp_establish(); |
| 1350 | f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); |
| 1351 | |
| 1352 | /* Establish an Uplink TBF */ |
| 1353 | ok := f_establish_tbf(rr_imm_ass); |
| 1354 | if (not ok) { |
| 1355 | setverdict(fail, "Failed to establish TBF"); |
| 1356 | mtc.stop; |
| 1357 | } |
| 1358 | ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); |
| 1359 | if (not ok) { |
| 1360 | setverdict(fail, "Immediate Assignment not an Uplink TBF"); |
| 1361 | mtc.stop; |
| 1362 | } |
| 1363 | |
| 1364 | if (not istemplatekind(ms_racap, "omit")) { |
| 1365 | /* Send PACKET RESOURCE REQUEST to upgrade to EGPRS |
| 1366 | * (see 3GPP TS 04.60 "7.1.3.1 Initiation of the Packet resource request procedure") |
| 1367 | */ |
| 1368 | f_tx_rlcmac_ul_block(ts_RLC_UL_CTRL_ACK(valueof(ts_RlcMacUlCtrl_PKT_RES_REQ(tlli, ms_racap))), 0); |
| 1369 | f_rx_rlcmac_dl_block_exp_pkt_ul_ass(dl_block, sched_fn); |
| 1370 | if (dl_block.ctrl.payload.u.ul_assignment.identity.tlli.tlli != tlli) { |
| 1371 | setverdict(fail, "Wrong TLLI ", dl_block.ctrl.payload.u.ul_assignment.identity.tlli, " received vs exp ", tlli); |
| 1372 | mtc.stop; |
| 1373 | } |
| 1374 | } |
| 1375 | |
| 1376 | /* Send one UL block and make sure it is ACKED fine */ |
| 1377 | f_tx_rlcmac_ul_n_blocks(ul_tbf_ass, 1); |
| 1378 | f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, sched_fn); |
| 1379 | /* DL ACK/NACK sets poll+rrbp requesting PACKET CONTROL ACK */ |
| 1380 | f_tx_rlcmac_ul_block(ts_RLCMAC_CTRL_ACK(tlli), 0, sched_fn); |
| 1381 | |
| 1382 | /* UL block should be received in SGSN */ |
| 1383 | BSSGP[0].receive(tr_BSSGP_UL_UD(tlli, mp_gb_cfg.cell_id)); |
| 1384 | |
| 1385 | /* Now SGSN sends some DL data, PCU will page on CCCH (PCH) */ |
| 1386 | BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data)); |
| 1387 | f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); |
| 1388 | |
| 1389 | ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); |
| 1390 | if (not ok) { |
| 1391 | setverdict(fail, "Immediate Assignment not a Downlink TBF"); |
| 1392 | mtc.stop; |
| 1393 | } |
| 1394 | |
| 1395 | /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ |
| 1396 | f_sleep(X2002); |
| 1397 | f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0, exp_cs_mcs); |
| 1398 | |
| 1399 | /* ACK the DL block */ |
| 1400 | f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); |
| 1401 | f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); |
| 1402 | } |
| 1403 | |
| 1404 | /* Test scenario where MS wants to send some data on PDCH against SGSN and it is |
| 1405 | * answered, so TBFs for uplink and later for downlink are created. |
| 1406 | */ |
| 1407 | testcase TC_mo_ping_pong() runs on RAW_PCU_Test_CT { |
| 1408 | var CodingScheme exp_cs_mcs := CS_1; |
| 1409 | f_TC_mo_ping_pong(omit, exp_cs_mcs); |
| 1410 | } |
| 1411 | |
| 1412 | |
| 1413 | testcase TC_mo_ping_pong_with_ul_racap() runs on RAW_PCU_Test_CT { |
| 1414 | var MultislotCap_GPRS mscap_gprs := { |
| 1415 | gprsmultislotclass := '00011'B, |
| 1416 | gprsextendeddynalloccap := '0'B |
| 1417 | }; |
| 1418 | var MSRadioAccessCapabilityV ms_racap := { valueof(ts_RaCapRec('0001'B /* E-GSM */, mscap_gprs, omit)) }; |
| 1419 | var CodingScheme exp_cs_mcs := CS_2; |
| 1420 | |
| 1421 | f_TC_mo_ping_pong(ms_racap, exp_cs_mcs); |
| 1422 | } |
| 1423 | |
| 1424 | /* Test scenario where SGSN wants to send some data against MS and it is |
| 1425 | * answered by the MS on PDCH, so TBFs for downlink and later for uplink are created. |
| 1426 | */ |
| 1427 | private function f_TC_mt_ping_pong(template (omit) MSRadioAccessCapabilityV_BSSGP ms_racap := omit, template (present) CodingScheme exp_cs_mcs := ?) runs on RAW_PCU_Test_CT { |
| 1428 | var GsmRrMessage rr_imm_ass; |
| 1429 | var PacketUlAssign ul_tbf_ass; |
| 1430 | var PacketDlAssign dl_tbf_ass; |
| 1431 | var RlcmacDlBlock dl_block; |
| 1432 | var PCUIF_Message pcu_msg; |
| 1433 | var octetstring data := f_rnd_octstring(10); |
| 1434 | var boolean ok; |
| 1435 | var uint32_t sched_fn; |
| 1436 | var OCT4 tlli := '00000001'O; |
| 1437 | var AckNackDescription ack_nack_desc := valueof(t_AckNackDescription_init); |
| 1438 | |
| 1439 | /* Initialize NS/BSSGP side */ |
| 1440 | f_init_bssgp(); |
| 1441 | |
| 1442 | /* Initialize the PCU interface abstraction */ |
| 1443 | f_init_raw(testcasename()); |
| 1444 | |
| 1445 | /* Establish BSSGP connection to the PCU */ |
| 1446 | f_bssgp_establish(); |
| 1447 | f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); |
| 1448 | |
| 1449 | /* SGSN sends some DL data, PCU will page on CCCH (PCH) */ |
| 1450 | BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data, ms_racap)); |
| 1451 | f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); |
| 1452 | |
| 1453 | ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); |
| 1454 | if (not ok) { |
| 1455 | setverdict(fail, "Immediate Assignment not a Downlink TBF"); |
| 1456 | mtc.stop; |
| 1457 | } |
| 1458 | |
| 1459 | /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ |
| 1460 | f_sleep(X2002); |
| 1461 | f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0, exp_cs_mcs); |
| 1462 | |
| 1463 | /* ACK the DL block */ |
| 1464 | f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); |
| 1465 | f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); |
| 1466 | |
| 1467 | /* Now MS wants to answer the DL data, Establish an Uplink TBF */ |
| 1468 | ok := f_establish_tbf(rr_imm_ass); |
| 1469 | if (not ok) { |
| 1470 | setverdict(fail, "Failed to establish TBF"); |
| 1471 | mtc.stop; |
| 1472 | } |
| 1473 | ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); |
| 1474 | if (not ok) { |
| 1475 | setverdict(fail, "Immediate Assignment not an Uplink TBF"); |
| 1476 | mtc.stop; |
| 1477 | } |
| 1478 | |
| 1479 | /* Send one UL block and make sure it is ACKED fine */ |
| 1480 | f_tx_rlcmac_ul_n_blocks(ul_tbf_ass, 1); |
| 1481 | f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, sched_fn); |
| 1482 | /* DL ACK/NACK sets poll+rrbp requesting PACKET CONTROL ACK */ |
| 1483 | f_tx_rlcmac_ul_block(ts_RLCMAC_CTRL_ACK(tlli), 0, sched_fn); |
| 1484 | |
| 1485 | /* UL block should be received in SGSN */ |
| 1486 | BSSGP[0].receive(tr_BSSGP_UL_UD(tlli, mp_gb_cfg.cell_id)); |
| 1487 | } |
| 1488 | |
| 1489 | testcase TC_mt_ping_pong() runs on RAW_PCU_Test_CT { |
| 1490 | var CodingScheme exp_cs_mcs := CS_1; |
| 1491 | f_TC_mt_ping_pong(omit, exp_cs_mcs); |
| 1492 | } |
| 1493 | |
| 1494 | /* TC_mt_ping_pong, but DL-UNITDATA contains RA Access capability with (M)CS |
| 1495 | /* information about the MS */ |
| 1496 | testcase TC_mt_ping_pong_with_dl_racap() runs on RAW_PCU_Test_CT { |
| 1497 | var MultislotCap_GPRS_BSSGP mscap_gprs := { |
| 1498 | gprsmultislotclass := '00011'B, |
| 1499 | gprsextendeddynalloccap := '0'B |
| 1500 | } ; |
| 1501 | var MSRadioAccessCapabilityV_BSSGP ms_racap := { valueof(ts_RaCapRec_BSSGP('0001'B /* E-GSM */, mscap_gprs, omit)) }; |
| 1502 | var CodingScheme exp_cs_mcs := CS_2; |
| 1503 | f_TC_mt_ping_pong(ms_racap, exp_cs_mcs); |
| 1504 | } |
| 1505 | |
| 1506 | /* Verify that if PCU doesn't get an ACK for first DL block after IMM ASS, it |
| 1507 | * will retry by retransmitting both the IMM ASS + DL block after poll (ack) |
| 1508 | * timeout occurs (specified by sent RRBP on DL block). */ |
| 1509 | testcase TC_imm_ass_dl_block_retrans() runs on RAW_PCU_Test_CT { |
| 1510 | var GsmRrMessage rr_imm_ass; |
| 1511 | var PacketDlAssign dl_tbf_ass; |
| 1512 | var RlcmacDlBlock dl_block; |
| 1513 | var octetstring data := f_rnd_octstring(10); |
| 1514 | var boolean ok; |
| 1515 | var uint32_t sched_fn; |
| 1516 | var OCT4 tlli := '00000001'O; |
| 1517 | var AckNackDescription ack_nack_desc := valueof(t_AckNackDescription_init); |
| 1518 | |
| 1519 | /* Initialize NS/BSSGP side */ |
| 1520 | f_init_bssgp(); |
| 1521 | |
| 1522 | /* Initialize the PCU interface abstraction */ |
| 1523 | f_init_raw(testcasename()); |
| 1524 | |
| 1525 | /* Establish BSSGP connection to the PCU */ |
| 1526 | f_bssgp_establish(); |
| 1527 | f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); |
| 1528 | |
| 1529 | /* SGSN sends some DL data, PCU will page on CCCH (PCH) */ |
| 1530 | BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data)); |
| 1531 | f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); |
| 1532 | ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); |
| 1533 | if (not ok) { |
| 1534 | setverdict(fail, "Immediate Assignment not a Downlink TBF"); |
| 1535 | mtc.stop; |
| 1536 | } |
| 1537 | |
| 1538 | /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ |
| 1539 | f_sleep(X2002); |
| 1540 | f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0); |
| 1541 | |
| 1542 | /* Now we don't ack the dl block (emulate MS failed receiveing IMM ASS |
| 1543 | * or GPRS DL, or DL ACK was lost for some reason). As a result, PCU |
| 1544 | * should retrigger IMM ASS + GPRS DL procedure after poll timeout. */ |
| 1545 | f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); |
| 1546 | ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass); |
| 1547 | if (not ok) { |
| 1548 | setverdict(fail, "Immediate Assignment not a Downlink TBF"); |
| 1549 | mtc.stop; |
| 1550 | } |
| 1551 | /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ |
| 1552 | f_sleep(X2002); |
| 1553 | f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0); |
| 1554 | |
| 1555 | /* ACK the DL block */ |
| 1556 | f_acknackdesc_ack_block(ack_nack_desc, dl_block, '1'B); |
| 1557 | f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(f_rlcmac_dl_block_get_tfi(dl_block), ack_nack_desc), 0, sched_fn); |
| 1558 | } |
| 1559 | |
| 1560 | private function f_pkt_paging_match_imsi(in PacketPagingReq req, hexstring imsi) { |
| 1561 | var MobileIdentityLV_Paging mi_lv := req.repeated_pageinfo.cs.mobile_identity; |
| 1562 | var MobileIdentityV mi := dec_MobileIdentityV(mi_lv.mobile_id); |
| 1563 | |
| 1564 | if (mi_lv.len != 8) { /* 8 octets: type of ID (3 bits) + even/odd flag (1 bit) + 15 BCD-encoded digits (60 bits) */ |
| 1565 | setverdict(fail, "Mobile Identity length mismatch: ", |
| 1566 | "expected: 8, got: ", mi_lv.len); |
| 1567 | mtc.stop; |
| 1568 | } |
| 1569 | |
| 1570 | /* Make sure MI contains IMSI before referencing it */ |
| 1571 | if (mi.typeOfIdentity != '001'B) { |
| 1572 | setverdict(fail, "Mobile Identity must be of type IMSI ('001'B), ", |
| 1573 | "got: ", mi.typeOfIdentity); |
| 1574 | mtc.stop; |
| 1575 | } else if (mi.oddEvenInd_identity.imsi.digits != imsi) { |
| 1576 | setverdict(fail, "Mobile Identity contains unexpected IMSI, ", |
| 1577 | "expected: ", imsi, " got: ", mi.oddEvenInd_identity.imsi.digits); |
| 1578 | mtc.stop; |
| 1579 | } |
| 1580 | } |
| 1581 | |
| 1582 | private function f_pkt_paging_match_tmsi(in PacketPagingReq req, template GsmTmsi tmsi) { |
| 1583 | if (not match(req.repeated_pageinfo.cs.tmsi, tmsi)) { |
| 1584 | setverdict(fail, "Mobile Identity (TMSI/P-TMSI) mismatch: ", |
| 1585 | "expected: ", tmsi, "got: ", req.repeated_pageinfo.cs.tmsi); |
| 1586 | mtc.stop; |
| 1587 | } |
| 1588 | } |
| 1589 | |
| 1590 | /* Test CS paging over the BTS<->PCU socket. |
| 1591 | * 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. |
| 1592 | * Paging should be send on the PACCH. |
| 1593 | * |
| 1594 | * 1. Send a Paging Request over PCU socket. |
| 1595 | * 2. Send a Ready-To-Send message over PCU socket |
| 1596 | * 3. Expect a Paging Frame |
| 1597 | */ |
| 1598 | testcase TC_paging_cs_from_bts() runs on RAW_PCU_Test_CT { |
| 1599 | var GsmRrMessage rr_imm_ass; |
| 1600 | var PacketUlAssign ul_tbf_ass; |
| 1601 | var RlcmacDlBlock dl_block; |
| 1602 | var boolean ok; |
| 1603 | var OCT4 tlli := '00000001'O; |
| 1604 | var MobileIdentityLV mi; |
| 1605 | var octetstring mi_enc_lv; |
| 1606 | var hexstring imsi := f_gen_imsi(42); |
| 1607 | |
| 1608 | /* Initialize NS/BSSGP side */ |
| 1609 | f_init_bssgp(); |
| 1610 | |
| 1611 | /* Initialize the PCU interface abstraction */ |
| 1612 | f_init_raw(testcasename()); |
| 1613 | |
| 1614 | /* Establish BSSGP connection to the PCU */ |
| 1615 | f_bssgp_establish(); |
| 1616 | f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); |
| 1617 | |
| 1618 | /* Establish an Uplink TBF */ |
| 1619 | ok := f_establish_tbf(rr_imm_ass); |
| 1620 | if (not ok) { |
| 1621 | setverdict(fail, "Failed to establish TBF"); |
| 1622 | mtc.stop; |
| 1623 | } |
| 1624 | |
| 1625 | ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); |
| 1626 | if (not ok) { |
| 1627 | setverdict(fail, "Immediate Assignment not an Uplink TBF"); |
| 1628 | mtc.stop; |
| 1629 | } |
| 1630 | |
| 1631 | |
| 1632 | /* build mobile Identity */ |
| 1633 | mi := valueof(ts_MI_IMSI_LV(imsi)); |
| 1634 | mi_enc_lv := enc_MobileIdentityLV(mi); |
| 1635 | /* Send paging request */ |
| 1636 | BTS.send(ts_PCUIF_PAG_REQ(bts_nr := 0, id_lv := mi_enc_lv, chan_needed := 0, |
| 1637 | sapi :=PCU_IF_SAPI_PDTCH)); |
| 1638 | |
| 1639 | /* Receive it on BTS side towards MS */ |
| 1640 | f_rx_rlcmac_dl_block_exp_pkt_pag_req(dl_block); |
| 1641 | |
| 1642 | /* Make sure that Packet Paging Request contains the same IMSI */ |
| 1643 | f_pkt_paging_match_imsi(dl_block.ctrl.payload.u.paging, imsi); |
| 1644 | |
| 1645 | setverdict(pass); |
| 1646 | } |
| 1647 | |
| 1648 | /* Test CS paging over Gb (SGSN->PCU->BTS[PDCH]). |
| 1649 | */ |
| 1650 | private function f_tc_paging_cs_from_sgsn(Nsvci bvci, boolean use_ptmsi := false) |
| 1651 | runs on RAW_PCU_Test_CT { |
| 1652 | var GsmRrMessage rr_imm_ass; |
| 1653 | var PacketUlAssign ul_tbf_ass; |
| 1654 | var RlcmacDlBlock dl_block; |
| 1655 | var boolean ok; |
| 1656 | var OCT4 tlli := '00000001'O; |
| 1657 | var hexstring imsi := f_gen_imsi(42); |
| 1658 | var GsmTmsi tmsi; |
| 1659 | |
| 1660 | /* Initialize NS/BSSGP side */ |
| 1661 | f_init_bssgp(); |
| 1662 | |
| 1663 | /* Initialize the PCU interface abstraction */ |
| 1664 | f_init_raw(testcasename()); |
| 1665 | |
| 1666 | /* Establish BSSGP connection to the PCU */ |
| 1667 | f_bssgp_establish(); |
| 1668 | f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); |
| 1669 | |
| 1670 | /* Establish an Uplink TBF */ |
| 1671 | ok := f_establish_tbf(rr_imm_ass); |
| 1672 | if (not ok) { |
| 1673 | setverdict(fail, "Failed to establish TBF"); |
| 1674 | mtc.stop; |
| 1675 | } |
| 1676 | |
| 1677 | ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass); |
| 1678 | if (not ok) { |
| 1679 | setverdict(fail, "Immediate Assignment not an Uplink TBF"); |
| 1680 | mtc.stop; |
| 1681 | } |
| 1682 | |
| 1683 | /* Send paging request with or without TMSI */ |
| 1684 | if (use_ptmsi) { |
| 1685 | tmsi := oct2int(f_rnd_octstring(4)); /* Random P-TMSI */ |
| 1686 | BSSGP[0].send(ts_BSSGP_CS_PAGING_PTMSI(bvci, imsi, tmsi)); |
| 1687 | } else { |
| 1688 | BSSGP[0].send(ts_BSSGP_CS_PAGING_IMSI(bvci, imsi)); |
| 1689 | } |
| 1690 | |
| 1691 | /* Receive it on BTS side towards MS */ |
| 1692 | f_rx_rlcmac_dl_block_exp_pkt_pag_req(dl_block); |
| 1693 | |
| 1694 | /* Make sure that Packet Paging Request contains the same P-TMSI/IMSI */ |
| 1695 | if (use_ptmsi) { |
| 1696 | f_pkt_paging_match_tmsi(dl_block.ctrl.payload.u.paging, tmsi); |
| 1697 | } else { |
| 1698 | f_pkt_paging_match_imsi(dl_block.ctrl.payload.u.paging, imsi); |
| 1699 | } |
| 1700 | |
| 1701 | setverdict(pass); |
| 1702 | } |
| 1703 | |
| 1704 | testcase TC_paging_cs_from_sgsn_sign_ptmsi() runs on RAW_PCU_Test_CT { |
| 1705 | f_tc_paging_cs_from_sgsn(0, true); |
| 1706 | } |
| 1707 | |
| 1708 | testcase TC_paging_cs_from_sgsn_sign() runs on RAW_PCU_Test_CT { |
| 1709 | f_tc_paging_cs_from_sgsn(0); |
| 1710 | } |
| 1711 | |
| 1712 | testcase TC_paging_cs_from_sgsn_ptp() runs on RAW_PCU_Test_CT { |
| 1713 | f_tc_paging_cs_from_sgsn(mp_gb_cfg.bvci); |
| 1714 | } |
| 1715 | |
| 1716 | /* Test PS paging over Gb (SGSN->PCU->BTS[CCCH]). |
| 1717 | */ |
| 1718 | private function f_tc_paging_ps_from_sgsn(Nsvci bvci, boolean use_ptmsi := false) |
| 1719 | runs on RAW_PCU_Test_CT { |
| 1720 | var OCT4 tlli := '00000001'O; |
| 1721 | var integer imsi_suff_tx := 423; |
| 1722 | var hexstring imsi := f_gen_imsi(imsi_suff_tx); |
| 1723 | |
| 1724 | /* Initialize NS/BSSGP side */ |
| 1725 | f_init_bssgp(); |
| 1726 | |
| 1727 | /* Initialize the PCU interface abstraction */ |
| 1728 | f_init_raw(testcasename()); |
| 1729 | |
| 1730 | /* Establish BSSGP connection to the PCU */ |
| 1731 | f_bssgp_establish(); |
| 1732 | f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli); |
| 1733 | |
| 1734 | /* Send BSSGP PAGING-PS (with or without TMSI), wait for RR Paging Request Type 1. |
| 1735 | * Make sure that both paging group (IMSI suffix) and Mobile Identity match. */ |
| 1736 | if (use_ptmsi) { |
| 1737 | var OCT4 tmsi := f_rnd_octstring(4); /* Random P-TMSI */ |
| 1738 | BSSGP[0].send(ts_BSSGP_PS_PAGING_PTMSI(bvci, imsi, oct2int(tmsi))); |
| 1739 | f_pcuif_rx_pch_pag_req1(t_MI_TMSI(tmsi), imsi_suff_tx); |
| 1740 | } else { |
| 1741 | BSSGP[0].send(ts_BSSGP_PS_PAGING_IMSI(bvci, imsi)); |
| 1742 | f_pcuif_rx_pch_pag_req1(tr_MI_IMSI(imsi), imsi_suff_tx); |
| 1743 | } |
| 1744 | |
| 1745 | setverdict(pass); |
| 1746 | } |
| 1747 | |
| 1748 | testcase TC_paging_ps_from_sgsn_sign_ptmsi() runs on RAW_PCU_Test_CT { |
| 1749 | f_tc_paging_ps_from_sgsn(0, true); |
| 1750 | } |
| 1751 | |
| 1752 | testcase TC_paging_ps_from_sgsn_sign() runs on RAW_PCU_Test_CT { |
| 1753 | f_tc_paging_ps_from_sgsn(0); |
| 1754 | } |
| 1755 | |
| 1756 | testcase TC_paging_ps_from_sgsn_ptp() runs on RAW_PCU_Test_CT { |
| 1757 | f_tc_paging_ps_from_sgsn(mp_gb_cfg.bvci); |
| 1758 | } |
| 1759 | |
| 1760 | private function f_TC_egprs_pkt_chan_req(in EGPRSPktChRequest req, |
| 1761 | template GsmRrMessage t_imm_ass := ?, |
| 1762 | PCUIF_BurstType bt := BURST_TYPE_1) |
| 1763 | runs on RAW_PCU_Test_CT { |
| 1764 | var GsmRrMessage rr_msg; |
| 1765 | var uint16_t ra11; |
| 1766 | var boolean ok; |
| 1767 | |
| 1768 | ra11 := enc_EGPRSPktChRequest2uint(req); |
| 1769 | log("Sending EGPRS Packet Channel Request (", ra11, "): ", req); |
| 1770 | |
| 1771 | ok := f_establish_tbf(rr_msg, ra := ra11, is_11bit := 1, burst_type := bt); |
| 1772 | if (not ok) { |
| 1773 | setverdict(fail, "Failed to establush an Uplink TBF"); |
| 1774 | mtc.stop; |
| 1775 | } |
| 1776 | |
| 1777 | if (not match(rr_msg, t_imm_ass)) { |
| 1778 | setverdict(fail, "Immediate Assignment does not match"); |
| 1779 | mtc.stop; |
| 1780 | } |
| 1781 | |
| 1782 | setverdict(pass); |
| 1783 | } |
| 1784 | |
| 1785 | testcase TC_egprs_pkt_chan_req_signalling() runs on RAW_PCU_Test_CT { |
| 1786 | var template GsmRrMessage imm_ass; |
| 1787 | var template IaRestOctets rest; |
| 1788 | var template EgprsUlAss ul_ass; |
| 1789 | |
| 1790 | /* Initialize the PCU interface abstraction */ |
| 1791 | f_init_raw(testcasename()); |
| 1792 | |
| 1793 | var EGPRSPktChRequest req := { |
| 1794 | /* NOTE: other fields are set in the loop */ |
| 1795 | signalling := { tag := '110011'B } |
| 1796 | }; |
| 1797 | |
| 1798 | for (var integer i := 0; i < 6; i := i + 1) { |
| 1799 | var BIT5 ext_ra := int2bit(f_rnd_int(32), 5); |
| 1800 | req.signalling.random_bits := ext_ra; |
| 1801 | |
| 1802 | /* For signalling, do we expect Multiblock UL TBF Assignment? */ |
| 1803 | ul_ass := tr_EgprsUlAssMultiblock(ext_ra := ext_ra); |
| 1804 | rest := tr_IaRestOctets_EGPRSULAss(ul_ass); |
| 1805 | imm_ass := tr_IMM_TBF_ASS(dl := false, rest := rest); |
| 1806 | |
| 1807 | f_TC_egprs_pkt_chan_req(req, imm_ass); |
| 1808 | } |
| 1809 | } |
| 1810 | |
| 1811 | testcase TC_egprs_pkt_chan_req_one_phase() runs on RAW_PCU_Test_CT { |
| 1812 | var template GsmRrMessage imm_ass; |
| 1813 | var template IaRestOctets rest; |
| 1814 | var template EgprsUlAss ul_ass; |
| 1815 | |
| 1816 | /* Initialize the PCU interface abstraction */ |
| 1817 | f_init_raw(testcasename()); |
| 1818 | |
| 1819 | var EGPRSPktChRequest req := { |
| 1820 | /* NOTE: other fields are set in the loop */ |
| 1821 | one_phase := { tag := '0'B } |
| 1822 | }; |
| 1823 | |
| 1824 | for (var integer i := 0; i < 6; i := i + 1) { |
| 1825 | var BIT5 ext_ra := int2bit(f_rnd_int(32), 5); |
| 1826 | var BIT5 mslot_class := int2bit(f_rnd_int(32), 5); |
| 1827 | var BIT2 priority := substr(ext_ra, 0, 2); |
| 1828 | var BIT3 rand := substr(ext_ra, 2, 3); |
| 1829 | |
| 1830 | req.one_phase.multislot_class := mslot_class; |
| 1831 | req.one_phase.priority := priority; |
| 1832 | req.one_phase.random_bits := rand; |
| 1833 | |
| 1834 | /* For one phase access, do we expect Dynamic UL TBF Assignment? */ |
| 1835 | ul_ass := tr_EgprsUlAssDynamic(ext_ra := ext_ra); |
| 1836 | rest := tr_IaRestOctets_EGPRSULAss(ul_ass); |
| 1837 | imm_ass := tr_IMM_TBF_ASS(dl := false, rest := rest); |
| 1838 | |
| 1839 | f_TC_egprs_pkt_chan_req(req, imm_ass); |
| 1840 | } |
| 1841 | } |
| 1842 | |
| 1843 | testcase TC_egprs_pkt_chan_req_two_phase() runs on RAW_PCU_Test_CT { |
| 1844 | var template GsmRrMessage imm_ass; |
| 1845 | var template IaRestOctets rest; |
| 1846 | var template EgprsUlAss ul_ass; |
| 1847 | |
| 1848 | /* Initialize the PCU interface abstraction */ |
| 1849 | f_init_raw(testcasename()); |
| 1850 | |
| 1851 | var EGPRSPktChRequest req := { |
| 1852 | /* NOTE: other fields are set in the loop */ |
| 1853 | two_phase := { tag := '110000'B } |
| 1854 | }; |
| 1855 | |
| 1856 | for (var integer i := 0; i < 6; i := i + 1) { |
| 1857 | var BIT5 ext_ra := int2bit(f_rnd_int(32), 5); |
| 1858 | var BIT2 priority := substr(ext_ra, 0, 2); |
| 1859 | var BIT3 rand := substr(ext_ra, 2, 3); |
| 1860 | |
| 1861 | req.two_phase.priority := priority; |
| 1862 | req.two_phase.random_bits := rand; |
| 1863 | |
| 1864 | /* For two phase access, do we expect Multiblock UL TBF Assignment? */ |
| 1865 | ul_ass := tr_EgprsUlAssMultiblock(ext_ra := ext_ra); |
| 1866 | rest := tr_IaRestOctets_EGPRSULAss(ul_ass); |
| 1867 | imm_ass := tr_IMM_TBF_ASS(dl := false, rest := rest); |
| 1868 | |
| 1869 | f_TC_egprs_pkt_chan_req(req, imm_ass); |
| 1870 | } |
| 1871 | } |
| 1872 | |
| 1873 | control { |
| 1874 | execute( TC_pcuif_suspend() ); |
| 1875 | execute( TC_ta_ptcch_idle() ); |
| 1876 | execute( TC_ta_rach_imm_ass() ); |
| 1877 | execute( TC_ta_idle_dl_tbf_ass() ); |
| 1878 | execute( TC_ta_ptcch_ul_multi_tbf() ); |
| 1879 | execute( TC_cs_lqual_ul_tbf() ); |
| 1880 | execute( TC_cs_initial_ul() ); |
| 1881 | execute( TC_cs_max_ul() ); |
| 1882 | execute( TC_t3169() ); |
| 1883 | execute( TC_t3193() ); |
| 1884 | execute( TC_mo_ping_pong() ); |
| 1885 | execute( TC_mo_ping_pong_with_ul_racap() ); |
| 1886 | execute( TC_mt_ping_pong() ); |
| 1887 | execute( TC_mt_ping_pong_with_dl_racap() ); |
| 1888 | execute( TC_imm_ass_dl_block_retrans() ); |
| 1889 | execute( TC_paging_cs_from_bts() ); |
| 1890 | execute( TC_paging_cs_from_sgsn_sign_ptmsi() ); |
| 1891 | execute( TC_paging_cs_from_sgsn_sign() ); |
| 1892 | execute( TC_paging_cs_from_sgsn_ptp() ); |
| 1893 | execute( TC_paging_ps_from_sgsn_sign_ptmsi() ); |
| 1894 | execute( TC_paging_ps_from_sgsn_sign() ); |
| 1895 | execute( TC_paging_ps_from_sgsn_ptp() ); |
| 1896 | |
| 1897 | /* EGPRS specific test cases */ |
| 1898 | execute( TC_egprs_pkt_chan_req_signalling() ); |
| 1899 | execute( TC_egprs_pkt_chan_req_one_phase() ); |
| 1900 | execute( TC_egprs_pkt_chan_req_two_phase() ); |
| 1901 | } |
| 1902 | |
| 1903 | |
| 1904 | |
| 1905 | |
| 1906 | |
| 1907 | |
Harald Welte | a419df2 | 2019-03-21 17:23:04 +0100 | [diff] [blame] | 1908 | } |