schedule msg3 retransmission for no signal scenario

openair1/PHY/NR_UE_TRANSPORT/nr_dlsch_decoding.c

@@ -119,7 +119,7 @@ static bool nr_ue_postDecode(PHY_VARS_NR_UE *phy_vars_ue,
           LOG_D(PHY, "DLSCH received nok \n");
           return true; //stop
         }
-	const int sz=A/8;
+	const int sz=A / 8;
         if (b[sz] == 0 && b[sz + 1] == 0) { // We search only a reccuring OAI error that propagates all 0 packets with a 0 CRC, so we
                                           // do the check only if the 2 first bytes of the CRC are 0 (it can be CRC16 or CRC24)
           int i = 0;

openair1/SCHED_NR/phy_procedures_nr_gNB.c

@@ -276,10 +276,12 @@ static void nr_postDecode(PHY_VARS_gNB *gNB, notifiedFIFO_elt_t *req)
   bool decodeSuccess = (rdata->decodeIterations <= rdata->decoderParms.numMaxIter);
   ulsch_harq->processedSegments++;
   LOG_D(PHY,
-        "processing result of segment: %d, processed %d/%d\n",
+        "processing result of segment: %d, processed %d/%d, %s\n",
         rdata->segment_r,
         ulsch_harq->processedSegments,
-        rdata->nbSegments);
+        rdata->nbSegments,
+        decodeSuccess ? "Decoded Successfully" : "Decoding Unsuccessful");
+
   if (decodeSuccess) {
     memcpy(ulsch_harq->b + rdata->offset, ulsch_harq->c[r], rdata->Kr_bytes - (ulsch_harq->F >> 3) - ((ulsch_harq->C > 1) ? 3 : 0));
 
@@ -466,11 +468,16 @@ void nr_fill_indication(PHY_VARS_gNB *gNB, int frame, int slot_rx, int ULSCH_id,
 
   // put timing advance command in 0..63 range
   timing_advance_update += 31;
-
-  if (timing_advance_update < 0)  timing_advance_update = 0;
-  if (timing_advance_update > 63) timing_advance_update = 63;
-
-  if (crc_flag == 0) LOG_D(PHY, "%d.%d : Received PUSCH : Estimated timing advance PUSCH is  = %d, timing_advance_update is %d \n", frame,slot_rx,sync_pos,timing_advance_update);
+  timing_advance_update = max(timing_advance_update, 0);
+  timing_advance_update = min(timing_advance_update, 63);
+
+  if (crc_flag == 0)
+    LOG_D(PHY,
+          "%d.%d : Received PUSCH : Estimated timing advance PUSCH is  = %d, timing_advance_update is %d \n",
+          frame,
+          slot_rx,
+          sync_pos,
+          timing_advance_update);
 
   // estimate UL_CQI for MAC
   int SNRtimes10 =

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c

@@ -390,7 +390,7 @@ static int nr_process_mac_pdu(instance_t module_idP,
         // fixed length
         mac_subheader_len = 1;
 
-        if ( rx_lcid == UL_SCH_LCID_CCCH1 ) {
+        if (rx_lcid == UL_SCH_LCID_CCCH1) {
           // RRCResumeRequest1 message includes the full I-RNTI and has a size of 8 bytes
           mac_len = 8;
 
@@ -615,6 +615,26 @@ void handle_nr_ul_harq(const int CC_idP,
   NR_SCHED_UNLOCK(&nrmac->sched_lock);
 }
 
+static void handle_msg3_failed_rx(NR_RA_t *ra, int i, int harq_round_max)
+{
+  // for CFRA (NSA) do not schedule retransmission of msg3
+  if (ra->cfra) {
+    LOG_D(NR_MAC, "Random Access %i failed at state %s (NSA msg3 reception failed)\n", i, nrra_text[ra->ra_state]);
+    nr_clear_ra_proc(ra);
+    return;
+  }
+
+  if (ra->msg3_round >= harq_round_max - 1) {
+    LOG_W(NR_MAC, "Random Access %i failed at state %s (Reached msg3 max harq rounds)\n", i, nrra_text[ra->ra_state]);
+    nr_clear_ra_proc(ra);
+    return;
+  }
+
+  LOG_D(NR_MAC, "Random Access %i Msg3 CRC did not pass\n", i);
+  ra->msg3_round++;
+  ra->ra_state = nrRA_Msg3_retransmission;
+}
+
 /*
 * When data are received on PHY and transmitted to MAC
 */
@@ -714,7 +734,7 @@ static void _nr_rx_sdu(const module_id_t gnb_mod_idP,
 
 #endif
 
-    if (sduP != NULL){
+    if (sduP != NULL) {
       LOG_D(NR_MAC, "Received PDU at MAC gNB \n");
 
       UE->UE_sched_ctrl.pusch_consecutive_dtx_cnt = 0;
@@ -728,7 +748,7 @@ static void _nr_rx_sdu(const module_id_t gnb_mod_idP,
     else {
       NR_UE_ul_harq_t *cur_harq = &UE_scheduling_control->ul_harq_processes[harq_pid];
       /* reduce sched_ul_bytes when cur_harq->round == 3 */
-      if (cur_harq->round == 3){
+      if (cur_harq->round == 3) {
         const uint32_t tb_size = UE_scheduling_control->ul_harq_processes[harq_pid].sched_pusch.tb_size;
         UE_scheduling_control->sched_ul_bytes -= tb_size;
         if (UE_scheduling_control->sched_ul_bytes < 0)
@@ -747,20 +767,16 @@ static void _nr_rx_sdu(const module_id_t gnb_mod_idP,
         nr_mac_trigger_ul_failure(&UE->UE_sched_ctrl, UE->current_UL_BWP.scs);
       }
     }
-  } else if(sduP) {
+  } else if (sduP) {
 
     bool no_sig = true;
     for (int k = 0; k < sdu_lenP; k++) {
-      if(sduP[k]!=0) {
+      if(sduP[k] != 0) {
         no_sig = false;
         break;
       }
     }
 
-    if(no_sig) {
-      LOG_W(NR_MAC, "No signal\n");
-    }
-
     T(T_GNB_MAC_UL_PDU_WITH_DATA, T_INT(gnb_mod_idP), T_INT(CC_idP),
       T_INT(rntiP), T_INT(frameP), T_INT(slotP), T_INT(-1) /* harq_pid */,
       T_BUFFER(sduP, sdu_lenP));
@@ -774,8 +790,8 @@ static void _nr_rx_sdu(const module_id_t gnb_mod_idP,
         continue;
 
       if (no_sig) {
-        LOG_D(NR_MAC, "Random Access %i failed at state %s (no signal)\n", i, nrra_text[ra->ra_state]);
-        nr_clear_ra_proc(ra);
+        LOG_W(NR_MAC, "Random Access %i ULSCH with no signal\n", i);
+        handle_msg3_failed_rx(ra, i, gNB_mac->ul_bler.harq_round_max);
         continue;
       }
 
@@ -912,23 +928,7 @@ static void _nr_rx_sdu(const module_id_t gnb_mod_idP,
       if( (frameP!=ra->Msg3_frame) || (slotP!=ra->Msg3_slot))
         continue;
 
-      // for CFRA (NSA) do not schedule retransmission of msg3
-      if (ra->cfra) {
-        LOG_D(NR_MAC, "Random Access %i failed at state %s (NSA msg3 reception failed)\n", i, nrra_text[ra->ra_state]);
-        nr_clear_ra_proc(ra);
-        return;
-      }
-
-      if (ra->msg3_round >= gNB_mac->ul_bler.harq_round_max - 1) {
-        LOG_W(NR_MAC, "Random Access %i failed at state %s (Reached msg3 max harq rounds)\n", i, nrra_text[ra->ra_state]);
-        nr_clear_ra_proc(ra);
-        return;
-      }
-
-      LOG_D(NR_MAC, "Random Access %i Msg3 CRC did not pass)\n", i);
-
-      ra->msg3_round++;
-      ra->ra_state = nrRA_Msg3_retransmission;
+      handle_msg3_failed_rx(ra, i, gNB_mac->ul_bler.harq_round_max);
     }
   }
 }