From edb6b9b4227a6886da2306e4a36cf5045489251c Mon Sep 17 00:00:00 2001 From: rmagueta Date: Tue, 14 Dec 2021 18:00:55 +0000 Subject: [PATCH] Increase SRS periodicity to get higher bitrate --- openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_srs.c | 2 +- openair2/RRC/NR/MESSAGES/asn1_msg.c | 10 +++++----- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_srs.c b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_srs.c index 12d30d59a4..a2b27357dd 100644 --- a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_srs.c +++ b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_srs.c @@ -175,7 +175,7 @@ void nr_schedule_srs(int module_id, frame_t frame) { // Check if UE will transmit the SRS in this frame if ( ((frame - offset/n_slots_frame)*n_slots_frame)%period == 0) { - LOG_D(NR_MAC,"(%d.%d) Scheduling SRS reception\n", frame, offset%n_slots_frame); + LOG_D(NR_MAC,"Scheduling SRS reception for %d.%d\n", frame, offset%n_slots_frame); nr_fill_nfapi_srs(module_id, CC_id, UE_id, offset%n_slots_frame, srs_resource); sched_ctrl->sched_srs.frame = frame; sched_ctrl->sched_srs.slot = offset%n_slots_frame; diff --git a/openair2/RRC/NR/MESSAGES/asn1_msg.c b/openair2/RRC/NR/MESSAGES/asn1_msg.c index 9c741ef7e4..22916c6faa 100755 --- a/openair2/RRC/NR/MESSAGES/asn1_msg.c +++ b/openair2/RRC/NR/MESSAGES/asn1_msg.c @@ -1021,8 +1021,8 @@ void fill_initial_SpCellConfig(rnti_t rnti, // This assert will never happen in the current implementation because NUMBER_OF_UE_MAX = 4. // However, if in the future NUMBER_OF_UE_MAX is increased, it will be necessary to improve the allocation of SRS resources, - // where the startPosition = 1, 2 or 3 and sl40 = 7, 17, 27 or 37 only give us 12 different allocations. - AssertFatal(uid>=0 && uid<12, "gNB cannot allocate the SRS resources\n"); + // where the startPosition = 2 or 3 and sl160 = 17, 17, 27 ... 157 only give us 30 different allocations. + AssertFatal(uid>=0 && uid<30, "gNB cannot allocate the SRS resources\n"); int curr_bwp = NRRIV2BW(scc->downlinkConfigCommon->initialDownlinkBWP->genericParameters.locationAndBandwidth,MAX_BWP_SIZE); SpCellConfig->servCellIndex = NULL; @@ -1182,7 +1182,7 @@ void fill_initial_SpCellConfig(rnti_t rnti, srs_res0->transmissionComb.choice.n2=calloc(1,sizeof(*srs_res0->transmissionComb.choice.n2)); srs_res0->transmissionComb.choice.n2->combOffset_n2=0; srs_res0->transmissionComb.choice.n2->cyclicShift_n2=0; - srs_res0->resourceMapping.startPosition = 1 + uid%3; + srs_res0->resourceMapping.startPosition = 2 + uid%2; srs_res0->resourceMapping.nrofSymbols=NR_SRS_Resource__resourceMapping__nrofSymbols_n1; srs_res0->resourceMapping.repetitionFactor=NR_SRS_Resource__resourceMapping__repetitionFactor_n1; srs_res0->freqDomainPosition=0; @@ -1197,8 +1197,8 @@ void fill_initial_SpCellConfig(rnti_t rnti, if(carrier->do_SRS) { srs_res0->resourceType.present= NR_SRS_Resource__resourceType_PR_periodic; srs_res0->resourceType.choice.periodic=calloc(1,sizeof(*srs_res0->resourceType.choice.periodic)); - srs_res0->resourceType.choice.periodic->periodicityAndOffset_p.present = NR_SRS_PeriodicityAndOffset_PR_sl40; - srs_res0->resourceType.choice.periodic->periodicityAndOffset_p.choice.sl40 = 7 + (uid/3)*10; // 7/17/27/37 are mixed slots + srs_res0->resourceType.choice.periodic->periodicityAndOffset_p.present = NR_SRS_PeriodicityAndOffset_PR_sl160; + srs_res0->resourceType.choice.periodic->periodicityAndOffset_p.choice.sl160 = 17 + (uid>1)*10; // 17/17/.../147/157 are mixed slots } else { srs_res0->resourceType.present= NR_SRS_Resource__resourceType_PR_aperiodic; srs_res0->resourceType.choice.aperiodic=calloc(1,sizeof(*srs_res0->resourceType.choice.aperiodic));