Implementation of multiple dedicated BWPs

• This branch implements the dedicated BWPs configuration, and the functions required for the BWP switching based on RRC method (except the BWP switch trigger).

• With the attached patch, a periodic BWP switching can be triggered for SA for tests purposes, between gNB and COTS UE, where it can be verified that the BWP switch is successful with the following command line for gNB:

sudo ./nr-softmodem -O ../../../targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.fr1.106PRB.2x2.usrpn300.conf --sa --usrp-tx-thread-config 1

Periodic_BWP_switching_algorithm.patch

openair2/RRC/NR/rrc_gNB_reconfig.c

@@ -116,7 +116,7 @@ void fill_default_nsa_downlinkBWP(NR_BWP_Downlink_t *bwp,
   int curr_bwp = NRRIV2BW(bwp->bwp_Common->genericParameters.locationAndBandwidth,275);
 
   NR_ControlResourceSet_t *coreset = calloc(1,sizeof(*coreset));
-  coreset->controlResourceSetId=1;
+  coreset->controlResourceSetId=bwp->bwp_Id+1; // To uniquely identify each Coreset lets derive it from the BWPId
   // frequency domain resources depends on BWP size
   // options are 24, 48 or 96
   coreset->frequencyDomainResources.buf = calloc(1,6);
@@ -156,9 +156,9 @@ void fill_default_nsa_downlinkBWP(NR_BWP_Downlink_t *bwp,
   bwp->bwp_Common->pdcch_ConfigCommon->choice.setup->commonSearchSpaceList=calloc(1,sizeof(*bwp->bwp_Common->pdcch_ConfigCommon->choice.setup->commonSearchSpaceList));
 
   NR_SearchSpace_t *ss=calloc(1,sizeof(*ss));
-  ss->searchSpaceId = 1;
+  ss->searchSpaceId = (bwp->bwp_Id<<1)-1; // To uniquely identify each SearchSpace lets derive it from the BWPId
   ss->controlResourceSetId=calloc(1,sizeof(*ss->controlResourceSetId));
-  *ss->controlResourceSetId=1;
+  *ss->controlResourceSetId=coreset->controlResourceSetId;
   ss->monitoringSlotPeriodicityAndOffset = calloc(1,sizeof(*ss->monitoringSlotPeriodicityAndOffset));
   ss->monitoringSlotPeriodicityAndOffset->present = NR_SearchSpace__monitoringSlotPeriodicityAndOffset_PR_sl1;
   ss->duration=NULL;
@@ -221,9 +221,9 @@ void fill_default_nsa_downlinkBWP(NR_BWP_Downlink_t *bwp,
   bwp->bwp_Dedicated->pdcch_Config->choice.setup->searchSpacesToAddModList = calloc(1,sizeof(*bwp->bwp_Dedicated->pdcch_Config->choice.setup->searchSpacesToAddModList));
 
   NR_SearchSpace_t *ss2 = calloc(1,sizeof(*ss2));
-  ss2->searchSpaceId=2;
+  ss2->searchSpaceId=(bwp->bwp_Id<<1); // To uniquely identify each SearchSpace lets derive it from the BWPId
   ss2->controlResourceSetId=calloc(1,sizeof(*ss2->controlResourceSetId));
-  *ss2->controlResourceSetId=1;
+  *ss2->controlResourceSetId=coreset->controlResourceSetId;
   ss2->monitoringSlotPeriodicityAndOffset=calloc(1,sizeof(*ss2->monitoringSlotPeriodicityAndOffset));
   ss2->monitoringSlotPeriodicityAndOffset->present = NR_SearchSpace__monitoringSlotPeriodicityAndOffset_PR_sl1;
   ss2->monitoringSlotPeriodicityAndOffset->choice.sl1=(NULL_t)0;
@@ -1065,7+1065,7 @@
   pusch_Config->resourceAllocation = NR_PUSCH_Config__resourceAllocation_resourceAllocationType1;
   pusch_Config->pusch_TimeDomainAllocationList = NULL;
   pusch_Config->pusch_AggregationFactor=NULL;
   pusch_Config->mcs_Table=NULL;
   pusch_Config->mcs_TableTransformPrecoder=NULL;
   pusch_Config->transformPrecoder= NULL;
   /* if msg3_transformprecoding is set in conf file - pusch config should not disable it */