From 7be1952c82cff254eee82a3fafd9792dfc32ebcd Mon Sep 17 00:00:00 2001 From: rmagueta Date: Tue, 9 Mar 2021 16:29:04 +0000 Subject: [PATCH] Add back-off indicator subheader to Msg2 --- openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c | 17 ++++++++----- openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c | 24 +++++++++++++++---- 2 files changed, 31 insertions(+), 10 deletions(-) diff --git a/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c b/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c index 312a9215d1..460f148b14 100644 --- a/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c +++ b/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c @@ -2266,27 +2266,32 @@ int nr_ue_process_rar(nr_downlink_indication_t *dl_info, NR_UL_TIME_ALIGNMENT_t NR_MAC_RAR *rar = (NR_MAC_RAR *) (dlsch_buffer + 1); // RAR subPDU pointer uint8_t preamble_index = get_ra_PreambleIndex(mod_id, cc_id, gNB_id); //prach_resources->ra_PreambleIndex; - LOG_D(MAC, "In %s:[%d.%d]: [UE %d][RAPROC] invoking MAC for received RAR (current preamble %d)\n", __FUNCTION__, frame, slot, mod_id, preamble_index); + LOG_D(NR_MAC, "In %s:[%d.%d]: [UE %d][RAPROC] invoking MAC for received RAR (current preamble %d)\n", __FUNCTION__, frame, slot, mod_id, preamble_index); while (1) { n_subheaders++; if (rarh->T == 1) { n_subPDUs++; - LOG_D(MAC, "[UE %d][RAPROC] Got RAPID RAR subPDU\n", mod_id); + LOG_I(NR_MAC, "[UE %d][RAPROC] Got RAPID RAR subPDU\n", mod_id); } else { - n_subPDUs++; ra->RA_backoff_indicator = table_7_2_1[((NR_RA_HEADER_BI *)rarh)->BI]; ra->RA_BI_found = 1; - LOG_D(MAC, "[UE %d][RAPROC] Got BI RAR subPDU %d\n", mod_id, ra->RA_backoff_indicator); + LOG_I(NR_MAC, "[UE %d][RAPROC] Got BI RAR subPDU %d ms\n", mod_id, ra->RA_backoff_indicator); + if ( ((NR_RA_HEADER_BI *)rarh)->E == 1) { + rarh += sizeof(NR_RA_HEADER_BI); + continue; + } else { + break; + } } if (rarh->RAPID == preamble_index) { - LOG_I(MAC, "[UE %d][RAPROC][%d.%d] Found RAR with the intended RAPID %d\n", mod_id, frame, slot, rarh->RAPID); + LOG_I(NR_MAC, "[UE %d][RAPROC][%d.%d] Found RAR with the intended RAPID %d\n", mod_id, frame, slot, rarh->RAPID); rar = (NR_MAC_RAR *) (dlsch_buffer + n_subheaders + (n_subPDUs - 1) * sizeof(NR_MAC_RAR)); ra->RA_RAPID_found = 1; break; } if (rarh->E == 0) { - LOG_W(PHY,"[UE %d][RAPROC] Received RAR preamble (%d) doesn't match the intended RAPID...\n", mod_id, preamble_index); + LOG_W(NR_MAC,"[UE %d][RAPROC] Received RAR preamble (%d) doesn't match the intended RAPID (%d)\n", mod_id, rarh->RAPID, preamble_index); break; } else { rarh += sizeof(NR_MAC_RAR) + 1; diff --git a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c index a9e20c7c9a..b7614034de 100644 --- a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c +++ b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c @@ -835,7 +835,7 @@ void nr_generate_Msg2(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra uint8_t time_domain_assignment = 3; uint8_t mcsIndex = 0; int rbStart = 0; - int rbSize = 6; + int rbSize = 8; if (nr_mac->sched_ctrlCommon == NULL){ nr_mac->sched_ctrlCommon = calloc(1,sizeof(*nr_mac->sched_ctrlCommon)); @@ -1043,7 +1043,7 @@ void nr_generate_Msg2(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra tx_req->PDU_length = pdsch_pdu_rel15->TBSize[0]; tx_req->PDU_index = pduindex; tx_req->num_TLV = 1; - tx_req->TLVs[0].length = 8; + tx_req->TLVs[0].length = tx_req->PDU_length + 2; nr_mac->TX_req[CC_id].SFN = frameP; nr_mac->TX_req[CC_id].Number_of_PDUs++; nr_mac->TX_req[CC_id].Slot = slotP; @@ -1371,8 +1371,9 @@ void nr_fill_rar(uint8_t Mod_idP, nfapi_nr_pusch_pdu_t *pusch_pdu){ LOG_I(MAC, "[gNB] Generate RAR MAC PDU frame %d slot %d preamble index %u TA command %d \n", ra->Msg2_frame, ra-> Msg2_slot, ra->preamble_index, ra->timing_offset); - NR_RA_HEADER_RAPID *rarh = (NR_RA_HEADER_RAPID *) dlsch_buffer; - NR_MAC_RAR *rar = (NR_MAC_RAR *) (dlsch_buffer + 1); + NR_RA_HEADER_BI *rarbi = (NR_RA_HEADER_BI *) dlsch_buffer; + NR_RA_HEADER_RAPID *rarh = (NR_RA_HEADER_RAPID *) (dlsch_buffer + 1); + NR_MAC_RAR *rar = (NR_MAC_RAR *) (dlsch_buffer + 2); unsigned char csi_req = 0, tpc_command; //uint8_t N_UL_Hop; uint8_t valid_bits; @@ -1381,6 +1382,16 @@ void nr_fill_rar(uint8_t Mod_idP, tpc_command = 3; // this is 0 dB + /// E/T/R/R/BI subheader /// + // E = 1, MAC PDU includes another MAC sub-PDU (RAPID) + // T = 0, Back-off indicator subheader + // R = 2, Reserved + // BI = 0, 5ms + rarbi->E = 1; + rarbi->T = 0; + rarbi->R = 0; + rarbi->BI = 0; + /// E/T/RAPID subheader /// // E = 0, one only RAR, first and last // T = 1, RAPID @@ -1428,6 +1439,11 @@ void nr_fill_rar(uint8_t Mod_idP, rar->UL_GRANT_4 = (uint8_t) ul_grant & 0xff; // FIXME: To be removed + //LOG_I(NR_MAC, "rarbi->E = 0x%x\n", rarbi->E); + //LOG_I(NR_MAC, "rarbi->T = 0x%x\n", rarbi->T); + //LOG_I(NR_MAC, "rarbi->R = 0x%x\n", rarbi->R); + //LOG_I(NR_MAC, "rarbi->BI = 0x%x\n", rarbi->BI); + LOG_I(NR_MAC, "rarh->E = 0x%x\n", rarh->E); LOG_I(NR_MAC, "rarh->T = 0x%x\n", rarh->T); LOG_I(NR_MAC, "rarh->RAPID = 0x%x (%i)\n", rarh->RAPID, rarh->RAPID);