find_SSB_and_RO_available()

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c

@@ -151,6 +151,38 @@ void find_SSB_and_RO_available(module_id_t module_idP) {
   uint8_t num_active_ssb = 0;
   uint8_t max_association_period = 1;
 
+  struct NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB *ssb_perRACH_OccasionAndCB_PreamblesPerSSB = scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup->ssb_perRACH_OccasionAndCB_PreamblesPerSSB;
+
+  switch (ssb_perRACH_OccasionAndCB_PreamblesPerSSB->present){
+    case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_oneEighth:
+      cc->cb_preambles_per_ssb = 4 * (ssb_perRACH_OccasionAndCB_PreamblesPerSSB->choice.oneEighth + 1);
+      break;
+    case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_oneFourth:
+      cc->cb_preambles_per_ssb = 4 * (ssb_perRACH_OccasionAndCB_PreamblesPerSSB->choice.oneFourth + 1);
+      break;
+    case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_oneHalf:
+      cc->cb_preambles_per_ssb = 4 * (ssb_perRACH_OccasionAndCB_PreamblesPerSSB->choice.oneHalf + 1);
+      break;
+    case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_one:
+      cc->cb_preambles_per_ssb = 4 * (ssb_perRACH_OccasionAndCB_PreamblesPerSSB->choice.one + 1);
+      break;
+    case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_two:
+      cc->cb_preambles_per_ssb = 4 * (ssb_perRACH_OccasionAndCB_PreamblesPerSSB->choice.two + 1);
+      break;
+    case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_four:
+      cc->cb_preambles_per_ssb = ssb_perRACH_OccasionAndCB_PreamblesPerSSB->choice.four;
+      break;
+    case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_eight:
+      cc->cb_preambles_per_ssb = ssb_perRACH_OccasionAndCB_PreamblesPerSSB->choice.eight;
+      break;
+    case NR_RACH_ConfigCommon__ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR_sixteen:
+      cc->cb_preambles_per_ssb = ssb_perRACH_OccasionAndCB_PreamblesPerSSB->choice.sixteen;
+      break;
+    default:
+      AssertFatal(1 == 0, "Unsupported ssb_perRACH_config %d\n", ssb_perRACH_OccasionAndCB_PreamblesPerSSB->present);
+      break;
+    }
+
   if (scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup->msg1_SubcarrierSpacing)
     mu = *scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup->msg1_SubcarrierSpacing;
   else

openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h

@@ -215,6 +215,8 @@ typedef struct {
   uint8_t max_association_period;
   //SSB index
   uint8_t ssb_index[MAX_NUM_OF_SSB];
+  //CB preambles for each SSB
+  uint8_t cb_preambles_per_ssb;
 } NR_COMMON_channels_t;