RRC sub-function to add PTRS configuration for DL

- Added a function to add PTRS values in RRC context.
- This function can be used to overwrite the PTRS values also.
- When RRC config file contains PTRS values then this function can be used
respectively in RRC context.

openair2/RRC/NR/nr_rrc_proto.h

@@ -101,3 +101,11 @@ void *rrc_gnb_task(void *args_p);
 
 /* Trigger RRC periodic processing. To be called once per ms. */
 void nr_rrc_trigger(protocol_ctxt_t *ctxt, int CC_id, int frame, int subframe);
+
+/**\ Function to set or overwrite PTRS DL RRC parameters.
+   \ *bwp Pointer to dedicated RC config structure
+   \ *ptrsNrb Pointer to K_ptrs N_RB related parameters  
+   \ *ptrsMcs Pointer to L_ptrs MCS related parameters  
+   \ *epre_Ratio Pointer to ep_ratio
+   \ *reOffset Pointer to RE Offset Value */
+void rrc_config_dl_ptrs_params(NR_BWP_Downlink_t *bwp, int *ptrsNrb, int *ptrsMcs, int *epre_Ratio, int * reOffset);

openair2/RRC/NR/rrc_gNB_reconfig.c

@@ -2133,5 +2133,44 @@ void fill_default_rbconfig(NR_RadioBearerConfig_t *rbconfig) {
 
   xer_fprint(stdout, &asn_DEF_NR_RadioBearerConfig, (const void*)rbconfig);
 }
-
+/* Function to set or overwrite PTRS DL RRC parameters */
+void rrc_config_dl_ptrs_params(NR_BWP_Downlink_t *bwp, int *ptrsNrb, int *ptrsMcs, int *epre_Ratio, int * reOffset)
+{
+  int i=0;
+  /* check for memory allocation  */
+  if(bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS == NULL)
+  {
+    
+    bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS=calloc(1,sizeof(*bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS));
+    bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->present = NR_SetupRelease_PTRS_DownlinkConfig_PR_setup;
+    bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup= calloc(1, sizeof(*bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup));
+    bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup->frequencyDensity = calloc(1,sizeof(*bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup->frequencyDensity));
+    bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup->timeDensity = calloc(1, sizeof(*bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup->timeDensity));
+    bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup->epre_Ratio = calloc(1,sizeof(long));
+    bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup->resourceElementOffset = calloc(1,sizeof(long));
+    /* Fill the given values */
+    for(i = 0; i < 2; i++)
+    {
+      ASN_SEQUENCE_ADD(&bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup->frequencyDensity->list,&ptrsNrb[i]);
+    }
+    for(i = 0; i < 3; i++)
+    {
+      ASN_SEQUENCE_ADD(&bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup->timeDensity->list,&ptrsMcs[i]);
+    }
+  }// if memory exist then over write the old values 
+  else
+  {
+    for(i = 0; i < 2; i++)
+    {
+      *bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup->frequencyDensity->list.array[i] = ptrsNrb[i];
+    }
+    for(i = 0; i < 3; i++)
+    {
+      *bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup->timeDensity->list.array[i] = ptrsMcs[i];
+    }
+  }
+
+  *bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup->epre_Ratio = *epre_Ratio;
+  *bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup->resourceElementOffset = *reOffset;
+}
 #endif