diff --git a/openair2/LAYER2/NR_MAC_UE/config_ue.c b/openair2/LAYER2/NR_MAC_UE/config_ue.c index 38829346c7..5a9620ed01 100755 --- a/openair2/LAYER2/NR_MAC_UE/config_ue.c +++ b/openair2/LAYER2/NR_MAC_UE/config_ue.c @@ -349,11 +349,11 @@ int nr_rrc_mac_config_req_ue( if(cell_group_config != NULL ){ mac->servCellIndex = *cell_group_config->spCellConfig->servCellIndex; if (cell_group_config->spCellConfig->reconfigurationWithSync) { + mac->rach_ConfigDedicated = cell_group_config->spCellConfig->reconfigurationWithSync->rach_ConfigDedicated->choice.uplink; mac->scc = cell_group_config->spCellConfig->reconfigurationWithSync->spCellConfigCommon; config_common_ue(mac,module_id,cc_idP); mac->crnti = cell_group_config->spCellConfig->reconfigurationWithSync->newUE_Identity; LOG_I(MAC,"Configuring CRNTI %x\n",mac->crnti); - } mac->scg = cell_group_config; diff --git a/openair2/LAYER2/NR_MAC_UE/mac_defs.h b/openair2/LAYER2/NR_MAC_UE/mac_defs.h index 446fe90f77..67782c3ef0 100755 --- a/openair2/LAYER2/NR_MAC_UE/mac_defs.h +++ b/openair2/LAYER2/NR_MAC_UE/mac_defs.h @@ -156,6 +156,7 @@ typedef struct { NR_ServingCellConfigCommon_t *scc; NR_CellGroupConfig_t *scg; + NR_RACH_ConfigDedicated_t *rach_ConfigDedicated; int servCellIndex; //// MAC config NR_DRX_Config_t *drx_Config; diff --git a/openair2/LAYER2/NR_MAC_UE/nr_ra_procedures.c b/openair2/LAYER2/NR_MAC_UE/nr_ra_procedures.c index 75091d49e2..3e00dba46d 100644 --- a/openair2/LAYER2/NR_MAC_UE/nr_ra_procedures.c +++ b/openair2/LAYER2/NR_MAC_UE/nr_ra_procedures.c @@ -88,6 +88,10 @@ void nr_get_prach_resources(module_id_t mod_id, int messagePowerOffsetGroupB, messageSizeGroupA, PLThreshold, sizeOfRA_PreamblesGroupA, numberOfRA_Preambles, i, deltaPreamble_Msg3; uint8_t noGroupB = 0, s_id, f_id, ul_carrier_id, prach_ConfigIndex, SFN_nbr, Msg3_size; + AssertFatal(scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup != NULL, "[UE %d] FATAL nr_rach_ConfigCommon is NULL !!!\n", mod_id); + nr_rach_ConfigCommon = scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup; + rach_ConfigGeneric = &nr_rach_ConfigCommon->rach_ConfigGeneric; + // NR_RSRP_Range_t rsrp_ThresholdSSB; // todo /////////////////////////////////////////////////////////// @@ -104,138 +108,140 @@ void nr_get_prach_resources(module_id_t mod_id, // -- RA initiated for SI request: // --- SSB selection, set prach_resources->ra_PreambleIndex - // if (rach_ConfigDedicated) { // This is for network controlled Mobility - // // operation for contention-free RA resources when: - // // - available SSB with SS-RSRP above rsrp-ThresholdSSB: SSB selection - // // - availalbe CSI-RS with CSI-RSRP above rsrp-ThresholdCSI-RS: CSI-RS selection - // prach_resources->ra_PreambleIndex = rach_ConfigDedicated->ra_PreambleIndex; - // } - - //////////* Contention-based RA preamble selection *////////// - // todo: - // - selection of SSB with SS-RSRP above rsrp-ThresholdSSB else select any SSB - // - todo determine next available PRACH occasion - - // rsrp_ThresholdSSB = *nr_rach_ConfigCommon->rsrp_ThresholdSSB; - - AssertFatal(scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup != NULL, "[UE %d] FATAL nr_rach_ConfigCommon is NULL !!!\n", mod_id); - - nr_rach_ConfigCommon = scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup; - rach_ConfigGeneric = &nr_rach_ConfigCommon->rach_ConfigGeneric; - - Msg3_size = mac->RA_Msg3_size; - - numberOfRA_Preambles = 64; - if(nr_rach_ConfigCommon->totalNumberOfRA_Preambles != NULL) - numberOfRA_Preambles = *(nr_rach_ConfigCommon->totalNumberOfRA_Preambles); - - if (!nr_rach_ConfigCommon->groupBconfigured) { - noGroupB = 1; + if (rach_ConfigDedicated) { + //////////* Contention free RA *////////// + // - the PRACH preamble for the UE to transmit is set through RRC configuration + // - this is the default mode in current implementation! + // Operation for contention-free RA resources when: + // - available SSB with SS-RSRP above rsrp-ThresholdSSB: SSB selection + // - available CSI-RS with CSI-RSRP above rsrp-ThresholdCSI-RS: CSI-RS selection + // - network controlled Mobility + uint8_t cfra_ssb_resource_idx = 0; + prach_resources->ra_PreambleIndex = rach_ConfigDedicated->cfra->resources.choice.ssb->ssb_ResourceList.list.array[cfra_ssb_resource_idx]->ra_PreambleIndex; + LOG_D(MAC, "[RAPROC] - Selected RA preamble index %d for contention-free random access procedure... \n", prach_resources->ra_PreambleIndex); } else { - // RA preambles group B is configured - // - Defining the number of RA preambles in RA Preamble Group A for each SSB */ - sizeOfRA_PreamblesGroupA = nr_rach_ConfigCommon->groupBconfigured->numberOfRA_PreamblesGroupA; - switch (nr_rach_ConfigCommon->groupBconfigured->ra_Msg3SizeGroupA){ - /* - Threshold to determine the groups of RA preambles */ - case 0: - messageSizeGroupA = 56; - break; - case 1: - messageSizeGroupA = 144; - break; - case 2: - messageSizeGroupA = 208; - break; - case 3: - messageSizeGroupA = 256; - break; - case 4: - messageSizeGroupA = 282; - break; - case 5: - messageSizeGroupA = 480; - break; - case 6: - messageSizeGroupA = 640; - break; - case 7: - messageSizeGroupA = 800; - break; - case 8: - messageSizeGroupA = 1000; - break; - case 9: - messageSizeGroupA = 72; - break; - default: - AssertFatal(1 == 0,"Unknown ra_Msg3SizeGroupA %lu\n", nr_rach_ConfigCommon->groupBconfigured->ra_Msg3SizeGroupA); - /* todo cases 10 -15*/ - } + //////////* Contention-based RA preamble selection *////////// + // todo: + // - selection of SSB with SS-RSRP above rsrp-ThresholdSSB else select any SSB + // - todo determine next available PRACH occasion - /* Power offset for preamble selection in dB */ - messagePowerOffsetGroupB = -9999; - switch (nr_rach_ConfigCommon->groupBconfigured->messagePowerOffsetGroupB){ - case 0: - messagePowerOffsetGroupB = -9999; - break; - case 1: - messagePowerOffsetGroupB = 0; - break; - case 2: - messagePowerOffsetGroupB = 5; - break; - case 3: - messagePowerOffsetGroupB = 8; - break; - case 4: - messagePowerOffsetGroupB = 10; - break; - case 5: - messagePowerOffsetGroupB = 12; - break; - case 6: - messagePowerOffsetGroupB = 15; - break; - case 7: - messagePowerOffsetGroupB = 18; - break; - default: - AssertFatal(1 == 0,"Unknown messagePowerOffsetGroupB %lu\n", nr_rach_ConfigCommon->groupBconfigured->messagePowerOffsetGroupB); - } + // rsrp_ThresholdSSB = *nr_rach_ConfigCommon->rsrp_ThresholdSSB; - // todo Msg3-DeltaPreamble should be provided from higher layers, otherwise is 0 - mac->deltaPreamble_Msg3 = 0; - deltaPreamble_Msg3 = mac->deltaPreamble_Msg3; - } + Msg3_size = mac->RA_Msg3_size; - PLThreshold = prach_resources->RA_PCMAX - rach_ConfigGeneric->preambleReceivedTargetPower - deltaPreamble_Msg3 - messagePowerOffsetGroupB; + numberOfRA_Preambles = 64; + if(nr_rach_ConfigCommon->totalNumberOfRA_Preambles != NULL) + numberOfRA_Preambles = *(nr_rach_ConfigCommon->totalNumberOfRA_Preambles); - /* Msg3 has not been transmitted yet */ - if (first_Msg3 == 1) { - if (noGroupB == 1) { - // use Group A preamble - prach_resources->ra_PreambleIndex = (taus()) % numberOfRA_Preambles; - mac->RA_usedGroupA = 1; - } else if ((Msg3_size < messageSizeGroupA) && (get_nr_PL(mod_id, CC_id, gNB_id) > PLThreshold)) { - // Group B is configured and RA preamble Group A is used - // - todo add condition on CCCH_sdu_size for initiation by CCCH - prach_resources->ra_PreambleIndex = (taus()) % sizeOfRA_PreamblesGroupA; - mac->RA_usedGroupA = 1; + if (!nr_rach_ConfigCommon->groupBconfigured) { + noGroupB = 1; } else { - // Group B preamble is configured and used - // the first sizeOfRA_PreamblesGroupA RA preambles belong to RA Preambles Group A - // the remaining belong to RA Preambles Group B - prach_resources->ra_PreambleIndex = sizeOfRA_PreamblesGroupA + (taus()) % (numberOfRA_Preambles - sizeOfRA_PreamblesGroupA); - mac->RA_usedGroupA = 0; + // RA preambles group B is configured + // - Defining the number of RA preambles in RA Preamble Group A for each SSB */ + sizeOfRA_PreamblesGroupA = nr_rach_ConfigCommon->groupBconfigured->numberOfRA_PreamblesGroupA; + switch (nr_rach_ConfigCommon->groupBconfigured->ra_Msg3SizeGroupA){ + /* - Threshold to determine the groups of RA preambles */ + case 0: + messageSizeGroupA = 56; + break; + case 1: + messageSizeGroupA = 144; + break; + case 2: + messageSizeGroupA = 208; + break; + case 3: + messageSizeGroupA = 256; + break; + case 4: + messageSizeGroupA = 282; + break; + case 5: + messageSizeGroupA = 480; + break; + case 6: + messageSizeGroupA = 640; + break; + case 7: + messageSizeGroupA = 800; + break; + case 8: + messageSizeGroupA = 1000; + break; + case 9: + messageSizeGroupA = 72; + break; + default: + AssertFatal(1 == 0,"Unknown ra_Msg3SizeGroupA %lu\n", nr_rach_ConfigCommon->groupBconfigured->ra_Msg3SizeGroupA); + /* todo cases 10 -15*/ + } + + /* Power offset for preamble selection in dB */ + messagePowerOffsetGroupB = -9999; + switch (nr_rach_ConfigCommon->groupBconfigured->messagePowerOffsetGroupB){ + case 0: + messagePowerOffsetGroupB = -9999; + break; + case 1: + messagePowerOffsetGroupB = 0; + break; + case 2: + messagePowerOffsetGroupB = 5; + break; + case 3: + messagePowerOffsetGroupB = 8; + break; + case 4: + messagePowerOffsetGroupB = 10; + break; + case 5: + messagePowerOffsetGroupB = 12; + break; + case 6: + messagePowerOffsetGroupB = 15; + break; + case 7: + messagePowerOffsetGroupB = 18; + break; + default: + AssertFatal(1 == 0,"Unknown messagePowerOffsetGroupB %lu\n", nr_rach_ConfigCommon->groupBconfigured->messagePowerOffsetGroupB); + } + + // todo Msg3-DeltaPreamble should be provided from higher layers, otherwise is 0 + mac->deltaPreamble_Msg3 = 0; + deltaPreamble_Msg3 = mac->deltaPreamble_Msg3; } - } else { // Msg3 is being retransmitted - if (mac->RA_usedGroupA == 1 && noGroupB == 1) { - prach_resources->ra_PreambleIndex = (taus()) % numberOfRA_Preambles; - } else if (mac->RA_usedGroupA == 1 && noGroupB == 0){ - prach_resources->ra_PreambleIndex = (taus()) % sizeOfRA_PreamblesGroupA; - } else { - prach_resources->ra_PreambleIndex = sizeOfRA_PreamblesGroupA + (taus()) % (numberOfRA_Preambles - sizeOfRA_PreamblesGroupA); + + PLThreshold = prach_resources->RA_PCMAX - rach_ConfigGeneric->preambleReceivedTargetPower - deltaPreamble_Msg3 - messagePowerOffsetGroupB; + + /* Msg3 has not been transmitted yet */ + if (first_Msg3 == 1) { + if (noGroupB == 1) { + // use Group A preamble + prach_resources->ra_PreambleIndex = (taus()) % numberOfRA_Preambles; + mac->RA_usedGroupA = 1; + } else if ((Msg3_size < messageSizeGroupA) && (get_nr_PL(mod_id, CC_id, gNB_id) > PLThreshold)) { + // Group B is configured and RA preamble Group A is used + // - todo add condition on CCCH_sdu_size for initiation by CCCH + prach_resources->ra_PreambleIndex = (taus()) % sizeOfRA_PreamblesGroupA; + mac->RA_usedGroupA = 1; + } else { + // Group B preamble is configured and used + // the first sizeOfRA_PreamblesGroupA RA preambles belong to RA Preambles Group A + // the remaining belong to RA Preambles Group B + prach_resources->ra_PreambleIndex = sizeOfRA_PreamblesGroupA + (taus()) % (numberOfRA_Preambles - sizeOfRA_PreamblesGroupA); + mac->RA_usedGroupA = 0; + } + } else { // Msg3 is being retransmitted + if (mac->RA_usedGroupA == 1 && noGroupB == 1) { + prach_resources->ra_PreambleIndex = (taus()) % numberOfRA_Preambles; + } else if (mac->RA_usedGroupA == 1 && noGroupB == 0){ + prach_resources->ra_PreambleIndex = (taus()) % sizeOfRA_PreamblesGroupA; + } else { + prach_resources->ra_PreambleIndex = sizeOfRA_PreamblesGroupA + (taus()) % (numberOfRA_Preambles - sizeOfRA_PreamblesGroupA); + } } + LOG_D(MAC, "[RAPROC] - Selected RA preamble index %d for contention-based random access procedure... \n", prach_resources->ra_PreambleIndex); } // todo determine next available PRACH occasion @@ -284,7 +290,7 @@ void nr_get_prach_resources(module_id_t mod_id, prach_resources->ra_RNTI = 1 + s_id + 14 * t_id + 1120 * f_id + 8960 * ul_carrier_id; mac->ra_rnti = prach_resources->ra_RNTI; - LOG_D(MAC, "Computed ra_RNTI is %d", prach_resources->ra_RNTI); + LOG_D(MAC, "Computed ra_RNTI is %x \n", prach_resources->ra_RNTI); } // TbD: RA_attempt_number not used @@ -311,6 +317,7 @@ void nr_Msg3_transmitted(module_id_t mod_id, uint8_t CC_id, frame_t frameP, uint /// Handling inizialization by PDCCH order, MAC entity or RRC (TS 38.300) /// Only one RA procedure is ongoing at any point in time in a MAC entity /// the RA procedure on a SCell shall only be initiated by PDCCH order +/// in the current implementation, RA is contention free only // WIP // todo TS 38.321: @@ -324,7 +331,6 @@ void nr_Msg3_transmitted(module_id_t mod_id, uint8_t CC_id, frame_t frameP, uint // - retrieve TBS // - add mac_rrc_nr_data_req_ue, etc ... // - add the backoff condition here if we have it from a previous RA reponse which failed (i.e. backoff indicator) - void nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources, module_id_t mod_id, int CC_id, @@ -345,6 +351,8 @@ void nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources, NR_RACH_ConfigCommon_t *setup = scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup; NR_RACH_ConfigGeneric_t *rach_ConfigGeneric = &setup->rach_ConfigGeneric; NR_FrequencyInfoDL_t *frequencyInfoDL = scc->downlinkConfigCommon->frequencyInfoDL; + NR_RACH_ConfigDedicated_t *rach_ConfigDedicated = mac->rach_ConfigDedicated; + // int32_t frame_diff = 0; uint8_t sdu_lcids[NB_RB_MAX] = {0}; @@ -485,7 +493,8 @@ void nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources, } // Fill in preamble and PRACH resources - nr_get_prach_resources(mod_id, CC_id, gNB_id, nr_tti_tx, 1, prach_resources, NULL); + if (is_nr_prach_slot) + nr_get_prach_resources(mod_id, CC_id, gNB_id, nr_tti_tx, 1, prach_resources, rach_ConfigDedicated); offset = nr_generate_ulsch_pdu((uint8_t *) mac_sdus, // sdus buffer (uint8_t *) payload, // UL MAC pdu pointer @@ -601,8 +610,11 @@ void nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources, mac->RA_tx_frame = frame; mac->RA_tx_subframe = nr_tti_tx; + // Fill in preamble and PRACH resources - nr_get_prach_resources(mod_id, CC_id, gNB_id, nr_tti_tx, 0, prach_resources, NULL); + if (is_nr_prach_slot) + nr_get_prach_resources(mod_id, CC_id, gNB_id, nr_tti_tx, 0, prach_resources, rach_ConfigDedicated); + } } } else if (UE_mode == PUSCH) {