msg4

executables/nr-softmodem.c

@@ -419,7 +419,7 @@ int create_gNB_tasks(uint32_t gnb_nb) {
   }
 
 
-  if (AMF_MODE_ENABLED && (get_softmodem_params()->phy_test==0 && get_softmodem_params()->do_ra==0)) {
+  if (AMF_MODE_ENABLED && (get_softmodem_params()->phy_test==0 && get_softmodem_params()->do_ra==0 && get_softmodem_params()->sa_ra==0)) {
     if (gnb_nb > 0) {
       /*
       if (itti_create_task (TASK_SCTP, sctp_eNB_task, NULL) < 0) {

executables/softmodem-common.h

@@ -99,6 +99,7 @@ extern "C"
 #define SPLIT73             softmodem_params.split73
 #define TP_CONFIG           softmodem_params.threadPoolConfig
 #define PHY_TEST            softmodem_params.phy_test
+#define SA_RA                  softmodem_params.sa_ra
 #define DO_RA               softmodem_params.do_ra
 #define WAIT_FOR_SYNC       softmodem_params.wait_for_sync
 #define SINGLE_THREAD_FLAG  softmodem_params.single_thread_flag
@@ -118,6 +119,7 @@ extern "C"
     {"split73",              CONFIG_HLP_SPLIT73,      0,              strptr:(char **)&SPLIT73,           defstrval:NULL,        TYPE_STRING, sizeof(SPLIT73)},\
     {"thread-pool",          CONFIG_HLP_TPOOL,        0,              strptr:(char **)&TP_CONFIG,         defstrval:"n",         TYPE_STRING, sizeof(TP_CONFIG)}, \
     {"phy-test",             CONFIG_HLP_PHYTST,       PARAMFLAG_BOOL, iptr:&PHY_TEST,                     defintval:0,           TYPE_INT,    0},                     \
+    {"sa-ra",                  CONFIG_HLP_PHYTST,       PARAMFLAG_BOOL, iptr:&SA_RA,                            defintval:0,           TYPE_INT,    0},                     \
     {"do-ra",                CONFIG_HLP_DORA,         PARAMFLAG_BOOL, iptr:&DO_RA,                        defintval:0,           TYPE_INT,    0},                     \
     {"usim-test",            CONFIG_HLP_USIM,         PARAMFLAG_BOOL, u8ptr:&USIM_TEST,                   defintval:0,           TYPE_UINT8,  0},                     \
     {"clock-source",                CONFIG_HLP_CLK,          0,              uptr:&CLOCK_SOURCE,                 defintval:0,           TYPE_UINT,   0},                     \
@@ -212,6 +214,7 @@ typedef struct {
   char           split73[1024];
   char           threadPoolConfig[1024];
   int            phy_test;
+  int            sa_ra;
   int            do_ra;
   uint8_t        usim_test;
   int            emulate_rf;

openair1/PHY/NR_UE_TRANSPORT/nr_dlsch_decoding.c

@@ -665,8 +665,8 @@ uint32_t nr_dlsch_decoding(PHY_VARS_NR_UE *phy_vars_ue,
     return((1 + dlsch->max_ldpc_iterations));
   } else {
 //#if UE_DEBUG_TRACE
-    LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for nr_slot_rx %d TBS %d mcs %d nb_rb %d harq_process->round %d\n",
-	  phy_vars_ue->Mod_id,nr_slot_rx,harq_process->TBS,harq_process->mcs,harq_process->nb_rb, harq_process->round);
+    LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for SFN %d nr_slot_rx %d TBS %d mcs %d nb_rb %d harq_process->round %d\n",
+	  phy_vars_ue->Mod_id,frame,nr_slot_rx,harq_process->TBS,harq_process->mcs,harq_process->nb_rb, harq_process->round);
 //#endif
 
     harq_process->status = SCH_IDLE;

openair1/SCHED_NR/phy_procedures_nr_gNB.c

@@ -569,7 +569,7 @@ void phy_procedures_gNB_uespec_RX(PHY_VARS_gNB *gNB, int frame_rx, int slot_rx)
           gNB->uci_pdu_list[num_ucis].pdu_type = NFAPI_NR_UCI_FORMAT_0_1_PDU_TYPE;
           gNB->uci_pdu_list[num_ucis].pdu_size = sizeof(nfapi_nr_uci_pucch_pdu_format_0_1_t);
           nfapi_nr_uci_pucch_pdu_format_0_1_t *uci_pdu_format0 = &gNB->uci_pdu_list[num_ucis].pucch_pdu_format_0_1;
-
+          uci_pdu_format0->rnti = pucch_pdu->rnti;
           nr_decode_pucch0(gNB,
 	                   slot_rx,
                            uci_pdu_format0,

openair1/SCHED_NR_UE/fapi_nr_ue_l1.c

@@ -94,8 +94,6 @@ int8_t nr_ue_scheduled_response(nr_scheduled_response_t *scheduled_response){
           dlsch0->rnti = dl_config->dl_config_list[i].dlsch_config_pdu.rnti;
           dlsch0_harq = dlsch0->harq_processes[current_harq_pid];
 
-          LOG_D(PHY,"current_harq_pid = %d\n", current_harq_pid);
-
           if (dlsch0_harq){
 
             dlsch0_harq->BWPStart = dlsch_config_pdu->BWPStart;

openair1/SCHED_NR_UE/phy_procedures_nr_ue.c

@@ -242,7 +242,7 @@ void phy_procedures_nrUE_TX(PHY_VARS_NR_UE *ue,
   //LOG_M("txdata.m","txs",ue->common_vars.txdata[0],1228800,1,1);
 
   /* RACH */
-  if (get_softmodem_params()->do_ra==1) {
+  if ((get_softmodem_params()->do_ra==1) || (get_softmodem_params()->sa_ra==1)) {
     if ((ue->UE_mode[gNB_id] > NOT_SYNCHED && ue->UE_mode[gNB_id] < PUSCH) && (ue->prach_vars[gNB_id]->prach_Config_enabled == 1)) {
       nr_ue_prach_procedures(ue, proc, gNB_id, mode);
     }
@@ -800,19 +800,25 @@ int nr_ue_pdsch_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, int eNB_
       else { // This is to adjust the llr offset in the case of skipping over a dmrs symbol (i.e. in case of no PDSCH REs in DMRS)
 	if      (pdsch == RA_PDSCH) ue->pdsch_vars[proc->thread_id][eNB_id]->llr_offset[m]=ue->pdsch_vars[proc->thread_id][eNB_id]->llr_offset[m-1];
 	else if (pdsch == PDSCH) {
-          if (nr_rx_pdsch(ue,
-                    proc,
-                    pdsch,
-                    eNB_id,
-                    eNB_id_i,
-                    frame_rx,
-                    nr_slot_rx,
-                    m,
-                    first_symbol_flag,
-                    dual_stream_UE,
-                    i_mod,
-                    dlsch0->current_harq_pid) < 0)
-                      return -1;
+          if (dlsch0->harq_processes[harq_pid]->n_dmrs_cdm_groups == 2) 
+          {  
+            ue->pdsch_vars[proc->thread_id][eNB_id]->llr_offset[m]=ue->pdsch_vars[proc->thread_id][eNB_id]->llr_offset[m-1];
+          }
+          else  {
+            if (nr_rx_pdsch(ue,
+                      proc,
+                      pdsch,
+                      eNB_id,
+                      eNB_id_i,
+                      frame_rx,
+                      nr_slot_rx,
+                      m,
+                      first_symbol_flag,
+                      dual_stream_UE,
+                      i_mod,
+                      dlsch0->current_harq_pid) < 0)
+                        return -1;
+          }
         }
 	else AssertFatal(1==0,"not RA_PDSCH or PDSCH\n");
       }

openair2/LAYER2/NR_MAC_UE/nr_ra_procedures.c

@@ -553,12 +553,19 @@ uint8_t nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources,
 
       if (mac->RA_window_cnt >= 0 && mac->RA_RAPID_found == 1) {
 
-        // Reset RA_active flag: it disables Msg3 retransmission (8.3 of TS 38.213)
-        // TbD Msg3 Retransmissions to be scheduled by DCI 0_0
-        mac->RA_active = 0;
-        mac->RA_window_cnt = -1;
-        mac->ra_state = RA_SUCCEEDED;
-        mac->generate_nr_prach = 2;
+        if (get_softmodem_params()->sa_ra)
+        {
+           mac->ra_state = WAIT_CONTENTION_RESOLUTION;
+        }
+        else
+        {
+           // Reset RA_active flag: it disables Msg3 retransmission (8.3 of TS 38.213)
+           // TbD Msg3 Retransmissions to be scheduled by DCI 0_0
+           mac->RA_active = 0;
+           mac->ra_state = RA_SUCCEEDED;
+           mac->generate_nr_prach = 2;
+        }
+        mac->RA_window_cnt = -1;       
         LOG_I(MAC, "[MAC][UE %d][RAPROC]: RAR successfully received \n", mod_id);
 
       } else if (mac->RA_window_cnt == 0 && !mac->RA_RAPID_found) {

openair2/LAYER2/NR_MAC_UE/nr_ue_dci_configuration.c

@@ -135,12 +135,22 @@ void config_dci_pdu(NR_UE_MAC_INST_t *mac, fapi_nr_dl_config_dci_dl_pdu_rel15_t
     rel15->BWPStart = NRRIV2PRBOFFSET(bwp_Common->genericParameters.locationAndBandwidth, 275); //NRRIV2PRBOFFSET(initialDownlinkBWP->genericParameters.locationAndBandwidth, 275);
     rel15->SubcarrierSpacing = initialDownlinkBWP->genericParameters.subcarrierSpacing;
     rel15->dci_length_options[0] = nr_dci_size(scc, mac->scg, def_dci_pdu_rel15, rel15->dci_format_options[0], NR_RNTI_RA, rel15->BWPSize, bwp_id);
+    LOG_D(PHY, "pdcch params: rnti %d, bwp %d %d, len %d\n",rel15->rnti, rel15->BWPSize, rel15->BWPStart, rel15->dci_length_options[0]);
     break;
     case NR_RNTI_P:
     break;
     case NR_RNTI_CS:
     break;
     case NR_RNTI_TC:
+    // we use the initial DL BWP
+    sps = initialDownlinkBWP->genericParameters.cyclicPrefix == NULL ? 14 : 12;
+    monitoringSymbolsWithinSlot = (ss->monitoringSymbolsWithinSlot->buf[0]<<(sps-8)) | (ss->monitoringSymbolsWithinSlot->buf[1]>>(16-sps));
+    rel15->rnti = mac->t_crnti;
+    rel15->BWPSize = NRRIV2BW(initialDownlinkBWP->genericParameters.locationAndBandwidth, 275);
+    rel15->BWPStart = NRRIV2PRBOFFSET(bwp_Common->genericParameters.locationAndBandwidth, 275); //NRRIV2PRBOFFSET(initialDownlinkBWP->genericParameters.locationAndBandwidth, 275);
+    rel15->SubcarrierSpacing = initialDownlinkBWP->genericParameters.subcarrierSpacing;
+    rel15->dci_length_options[0] = nr_dci_size(scc, mac->scg, def_dci_pdu_rel15, rel15->dci_format_options[0], NR_RNTI_TC, rel15->BWPSize, bwp_id);
+    LOG_D(PHY, "pdcch params: rnti %d, bwp %d %d (%d), len %d\n",rel15->rnti, rel15->BWPSize, rel15->BWPStart,initialDownlinkBWP->genericParameters.locationAndBandwidth,  rel15->dci_length_options[0]);
     break;
     case NR_RNTI_SP_CSI:
     break;
@@ -222,7 +232,12 @@ void ue_dci_configuration(NR_UE_MAC_INST_t *mac, fapi_nr_dl_config_request_t *dl
               fill_dci_search_candidates(ss, rel15);
               break;
               case WAIT_CONTENTION_RESOLUTION:
+              LOG_D(MAC, "[DCI_CONFIG] frame %d %d Configure monitoring of PDCCH candidates in Type1-PDCCH common random access search space\n",frame,slot);
               rel15->rnti = mac->t_crnti;
+              rel15->num_dci_options = 1; // just search the dci for msg4, should add the ul dci for retx for msg3 later.
+              rel15->dci_format_options[0] = NR_DL_DCI_FORMAT_1_0;
+              config_dci_pdu(mac, rel15, dl_config, NR_RNTI_TC, ss_id);
+              fill_dci_search_candidates(ss, rel15);              
               break;
               default:
               break;

openair2/LAYER2/NR_MAC_gNB/config.c

@@ -387,7 +387,7 @@ int rrc_mac_config_req_gNB(module_id_t Mod_idP,
 
     NR_UE_info_t *UE_info = &RC.nrmac[Mod_idP]->UE_info;
     if (add_ue == 1 && get_softmodem_params()->phy_test) {
-      const int UE_id = add_new_nr_ue(Mod_idP,rnti);
+      const int UE_id = add_new_nr_ue(Mod_idP,rnti,true);
       UE_info->secondaryCellGroup[UE_id] = secondaryCellGroup;
       compute_csi_bitlen (secondaryCellGroup, UE_info, UE_id);
       struct NR_ServingCellConfig__downlinkBWP_ToAddModList *bwpList =

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler.c

@@ -412,7 +412,7 @@ void gNB_dlsch_ulsch_scheduler(module_id_t module_idP,
   // This schedule RA procedure if not in phy_test mode
   // Otherwise already consider 5G already connected
   if (get_softmodem_params()->phy_test == 0) {
-    nr_schedule_RA(module_idP, frame, slot);
+    nr_schedule_RA(module_idP, frame, slot, num_slots_per_tdd);
   }
 
   // This schedules the DCI for Uplink and subsequently PUSCH
@@ -427,7 +427,8 @@ void gNB_dlsch_ulsch_scheduler(module_id_t module_idP,
   }
 
 
-  if (UE_info->active[UE_id])
+  //if (UE_info->active[UE_id])
+    if (UE_info->rnti[UE_id] > 0)
     nr_schedule_pucch(module_idP, UE_id, nr_ulmix_slots, frame, slot);
 
   stop_meas(&RC.nrmac[module_idP]->eNB_scheduler);

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c

@@ -375,60 +375,94 @@ uint8_t getN_PRB_DMRS(NR_BWP_Downlink_t *bwp, int numDmrsCdmGrpsNoData) {
 void nr_simple_dlsch_preprocessor(module_id_t module_id,
                                   frame_t frame,
                                   sub_frame_t slot,
-                                  int num_slots_per_tdd) {
+                                  int num_slots_per_tdd,
+                                  int rnti_type,
+                                  int UE_id) {
   NR_UE_info_t *UE_info = &RC.nrmac[module_id]->UE_info;
 
-  AssertFatal(UE_info->num_UEs <= 1,
-              "%s() cannot handle more than one UE, but found %d\n",
-              __func__,
-              UE_info->num_UEs);
-  if (UE_info->num_UEs == 0)
-    return;
-
-  const int UE_id = 0;
   const int CC_id = 0;
-
+  rnti_t rnti;
   NR_UE_sched_ctrl_t *sched_ctrl = &UE_info->UE_sched_ctrl[UE_id];
-
-  /* Retrieve amount of data to send for this UE */
-  sched_ctrl->num_total_bytes = 0;
-  const int lcid = DL_SCH_LCID_DTCH;
-  const rnti_t rnti = UE_info->rnti[UE_id];
-  sched_ctrl->rlc_status[lcid] = mac_rlc_status_ind(module_id,
-                                                    rnti,
-                                                    module_id,
-                                                    frame,
-                                                    slot,
-                                                    ENB_FLAG_YES,
-                                                    MBMS_FLAG_NO,
-                                                    lcid,
-                                                    0,
-                                                    0);
-  sched_ctrl->num_total_bytes += sched_ctrl->rlc_status[lcid].bytes_in_buffer;
-  if (sched_ctrl->num_total_bytes == 0
+  uint16_t Y = 0;
+  int m = 0;
+  int ss_type;
+  int cid;
+  rnti = UE_info->rnti[UE_id];
+
+  if (rnti_type == NR_RNTI_C)
+  {
+    /* Retrieve amount of data to send for this UE */
+    sched_ctrl->num_total_bytes = 0;
+    const int lcid = DL_SCH_LCID_DTCH;
+    
+    sched_ctrl->rlc_status[lcid] = mac_rlc_status_ind(module_id,
+                                                      rnti,
+                                                      module_id,
+                                                      frame,
+                                                      slot,
+                                                      ENB_FLAG_YES,
+                                                      MBMS_FLAG_NO,
+                                                      lcid,
+                                                      0,
+                                                      0);
+    sched_ctrl->num_total_bytes += sched_ctrl->rlc_status[lcid].bytes_in_buffer;
+    if (sched_ctrl->num_total_bytes == 0
       && !sched_ctrl->ta_apply) /* If TA should be applied, give at least one RB */
     return;
 
-  LOG_D(MAC, "[%s][%d.%d], DTCH%d->DLSCH, RLC status %d bytes TA %d\n",
+    LOG_D(MAC, "[%s][%d.%d], DTCH%d->DLSCH, RLC status %d bytes TA %d\n",
         __FUNCTION__,
         frame,
         slot,
         lcid,
         sched_ctrl->rlc_status[lcid].bytes_in_buffer,
         sched_ctrl->ta_apply);
-
+    ss_type = 1; // UE_Specific
+    const int target_ss = NR_SearchSpace__searchSpaceType_PR_ue_Specific;
+ 
+    sched_ctrl->search_space = get_searchspace(sched_ctrl->active_bwp, target_ss);
+    sched_ctrl->coreset = get_coreset(sched_ctrl->active_bwp, sched_ctrl->search_space, ss_type);
+
+    cid = sched_ctrl->coreset->controlResourceSetId;
+    Y = UE_info->Y[UE_id][cid][slot];
+    m = UE_info->num_pdcch_cand[UE_id][cid];
+  }
+  else if (rnti_type == NR_RNTI_TC)
+  { 
+    gNB_MAC_INST                      *nr_mac = RC.nrmac[module_id];
+    NR_COMMON_channels_t                  *cc = &nr_mac->common_channels[CC_id];
+    NR_RA_t *ra = &cc->ra[0];
+    /*
+    rrc_sdu_length = mac_rrc_data_req(module_idP, CC_idP, frameP, CCCH,
+                                          UE_RNTI(module_idP,UE_id),1,  // 1 transport block
+                                          &cc[CC_idP].CCCH_pdu.payload[0], 0);  // not used in this case
+    */
+    int rrc_sdu_length = 500;
+    sched_ctrl->num_total_bytes += rrc_sdu_length;
+    if (sched_ctrl->num_total_bytes == 0)
+    return;
+    LOG_D(MAC,
+              "[gNB %d][RAPROC] CC_id %d Frame %d, slot %d: UE_id %d, rrc_sdu_length %d\n",
+              module_id, CC_id, frame, slot, UE_id, rrc_sdu_length);
+    sched_ctrl->search_space = ra->ra_ss;
+    ss_type = 0; // Common
+    sched_ctrl->coreset = get_coreset(sched_ctrl->active_bwp, sched_ctrl->search_space, ss_type);
+    cid = sched_ctrl->coreset->controlResourceSetId;
+    rnti = ra->rnti;
+  }
+  else
+  {
+    return;
+  }
+  
+   
   /* Find a free CCE */
-  const int target_ss = NR_SearchSpace__searchSpaceType_PR_ue_Specific;
-  sched_ctrl->search_space = get_searchspace(sched_ctrl->active_bwp, target_ss);
+
   uint8_t nr_of_candidates;
   find_aggregation_candidates(&sched_ctrl->aggregation_level,
                               &nr_of_candidates,
                               sched_ctrl->search_space);
-  sched_ctrl->coreset = get_coreset(
-      sched_ctrl->active_bwp, sched_ctrl->search_space, 1 /* dedicated */);
-  int cid = sched_ctrl->coreset->controlResourceSetId;
-  const uint16_t Y = UE_info->Y[UE_id][cid][slot];
-  const int m = UE_info->num_pdcch_cand[UE_id][cid];
+
   sched_ctrl->cce_index = allocate_nr_CCEs(RC.nrmac[module_id],
                                            sched_ctrl->active_bwp,
                                            sched_ctrl->coreset,
@@ -436,6 +470,9 @@ void nr_simple_dlsch_preprocessor(module_id_t module_id,
                                            Y,
                                            m,
                                            nr_of_candidates);
+
+  LOG_D(PHY, "simple: frame %d %d, rnti %d, cce index %d, ss_type %d, ue is active %d\n",  frame,
+                        slot, rnti, sched_ctrl->cce_index, ss_type, UE_info->active[UE_id]);                                         
   if (sched_ctrl->cce_index < 0) {
     LOG_E(MAC, "%s(): could not find CCE for UE %d\n", __func__, UE_id);
     return;
@@ -449,7 +486,8 @@ void nr_simple_dlsch_preprocessor(module_id_t module_id,
                         slot,
                         num_slots_per_tdd,
                         &sched_ctrl->pucch_sched_idx,
-                        &sched_ctrl->pucch_occ_idx);
+                        &sched_ctrl->pucch_occ_idx,
+                        ss_type);
 
   AssertFatal(sched_ctrl->pucch_sched_idx >= 0, "no uplink slot for PUCCH found!\n");
 
@@ -496,7 +534,7 @@ void nr_simple_dlsch_preprocessor(module_id_t module_id,
     // modulation scheme
     sched_ctrl->mcsTableIdx = 0;
     sched_ctrl->mcs = 9;
-    sched_ctrl->numDmrsCdmGrpsNoData = 1;
+    sched_ctrl->numDmrsCdmGrpsNoData = (ss_type == 1)? 1 : 2;
 
     // Freq-demain allocation
     while (rbStart < bwpSize && vrb_map[rbStart]) rbStart++;
@@ -505,13 +543,22 @@ void nr_simple_dlsch_preprocessor(module_id_t module_id,
         getN_PRB_DMRS(sched_ctrl->active_bwp, sched_ctrl->numDmrsCdmGrpsNoData);
     int nrOfSymbols = getNrOfSymbols(sched_ctrl->active_bwp,
                                      sched_ctrl->time_domain_allocation);
-    uint8_t N_DMRS_SLOT = get_num_dmrs_symbols(sched_ctrl->active_bwp->bwp_Dedicated->pdsch_Config->choice.setup,
+    uint8_t N_DMRS_SLOT = get_num_dmrs_symbols((ss_type == 1)? sched_ctrl->active_bwp->bwp_Dedicated->pdsch_Config->choice.setup : NULL,
                                                RC.nrmac[module_id]->common_channels->ServingCellConfigCommon->dmrs_TypeA_Position ,
                                                nrOfSymbols);
 
     int rbSize = 0;
-    const int oh = 2 + (sched_ctrl->num_total_bytes >= 256)
-                 + 2 * (frame == (sched_ctrl->ta_frame + 10) % 1024);
+    int oh;
+    if (rnti_type == NR_RNTI_C)
+    {
+        oh = 2 + (sched_ctrl->num_total_bytes >= 256)
+                       + 2 * (frame == (sched_ctrl->ta_frame + 10) % 1024);
+    }
+    else 
+    {   // NR_RNTI_TC, msg4
+        oh = 2 + (sched_ctrl->num_total_bytes >= 256)
+                 + 1 + 6; // UE Contention Resolution Identity CE
+    }
     uint32_t TBS = 0;
     do {
       rbSize++;
@@ -540,16 +587,20 @@ void nr_schedule_ue_spec(module_id_t module_id,
                          int num_slots_per_tdd) {
   gNB_MAC_INST *gNB_mac = RC.nrmac[module_id];
 
-  /* PREPROCESSOR */
-  gNB_mac->pre_processor_dl(module_id, frame, slot, num_slots_per_tdd);
 
   NR_UE_info_t *UE_info = &gNB_mac->UE_info;
 
   const int CC_id = 0;
   NR_UE_list_t *UE_list = &UE_info->list;
   for (int UE_id = UE_list->head; UE_id >= 0; UE_id = UE_list->next[UE_id]) {
+    
+    if (!UE_info->active[UE_id])
+       continue;
     NR_UE_sched_ctrl_t *sched_ctrl = &UE_info->UE_sched_ctrl[UE_id];
 
+      /* PREPROCESSOR */
+    gNB_mac->pre_processor_dl(module_id, frame, slot, num_slots_per_tdd, NR_RNTI_C, UE_id);
+
     /* update TA and set ta_apply every 10 frames.
      * Possible improvement: take the periodicity from input file.
      * If such UE is not scheduled now, it will be by the preprocessor later.
@@ -620,7 +671,8 @@ void nr_schedule_ue_spec(module_id_t module_id,
                          nrOfSymbols,
                          current_harq_pid,
                          harq->ndi,
-                         harq->round);
+                         harq->round,
+                         NR_RNTI_C);
 
     NR_UE_ret_info_t *retInfo = &sched_ctrl->retInfo[current_harq_pid];
     if (harq->round != 0) { /* retransmission */
@@ -712,7 +764,7 @@ void nr_schedule_ue_spec(module_id_t module_id,
         header_length_total += header_length_last;
         num_sdus++;
       }
-      else if (get_softmodem_params()->phy_test || get_softmodem_params()->do_ra) {
+      else if (get_softmodem_params()->phy_test || get_softmodem_params()->do_ra || get_softmodem_params()->sa_ra) {
         LOG_D(MAC, "Configuring DL_TX in %d.%d: random data\n", frame, slot);
         // fill dlsch_buffer with random data
         for (int i = 0; i < TBS; i++)

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c

@@ -334,7 +334,8 @@ void nr_preprocessor_phytest(module_id_t module_id,
                         slot,
                         num_slots_per_tdd,
                         &sched_ctrl->pucch_sched_idx,
-                        &sched_ctrl->pucch_occ_idx);
+                        &sched_ctrl->pucch_occ_idx,
+                        1);
   AssertFatal(sched_ctrl->pucch_sched_idx >= 0, "no uplink slot for PUCCH found!\n");
 
   sched_ctrl->rbStart = rbStart;

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_uci.c

@@ -40,8 +40,10 @@ void nr_schedule_pucch(int Mod_idP,
                        frame_t frameP,
                        sub_frame_t slotP) {
   NR_UE_info_t *UE_info = &RC.nrmac[Mod_idP]->UE_info;
-  AssertFatal(UE_info->active[UE_id],"Cannot find UE_id %d is not active\n",UE_id);
-
+  //AssertFatal(UE_info->active[UE_id],"Cannot find UE_id %d is not active\n",UE_id);
+  if (UE_info->active[UE_id] <= 0)
+      LOG_D(MAC, "Cannot find UE_id %d is not active\n",UE_id);
+  
   for (int k=0; k<nr_ulmix_slots; k++) {
     for (int l=0; l<2; l++) {
       NR_sched_pucch *curr_pucch = &UE_info->UE_sched_ctrl[UE_id].sched_pucch[k][l];
@@ -280,6 +282,8 @@ void handle_nr_uci_pucch_0_1(module_id_t mod_id,
                              const nfapi_nr_uci_pucch_pdu_format_0_1_t *uci_01)
 {
   int UE_id = find_nr_UE_id(mod_id, uci_01->rnti);
+  
+  LOG_D(MAC, "handle_nr_uci_pucch_0_1, ue id %d, rnti %d\n", UE_id, uci_01->rnti);
   if (UE_id < 0) {
     LOG_E(MAC, "%s(): unknown RNTI %04x in PUCCH UCI\n", __func__, uci_01->rnti);
     return;
@@ -314,6 +318,10 @@ void handle_nr_uci_pucch_0_1(module_id_t mod_id,
           else
             sched_ctrl->harq_processes[harq_idx].round++;
           sched_ctrl->harq_processes[harq_idx].is_waiting = 0;
+          LOG_D(MAC, "%s():  RNTI %04x in PUCCH UCI, harq bit %d, idx %d, feedbanck slot %d, round %d, harq value %d, confidence %d\n", __func__, uci_01->rnti,
+          harq_bit, harq_idx, sched_ctrl->harq_processes[harq_idx].feedback_slot, sched_ctrl->harq_processes[harq_idx].round,
+          uci_01->harq->harq_list[harq_bit].harq_value,
+          uci_01->harq->harq_confidence_level);
           harq_idx_s = harq_idx + 1;
           // if the max harq rounds was reached
           if (sched_ctrl->harq_processes[harq_idx].round == max_harq_rounds) {
@@ -334,6 +342,10 @@ void handle_nr_uci_pucch_0_1(module_id_t mod_id,
             sched_ctrl->harq_processes[harq_idx].round = 0;
           }
           sched_ctrl->harq_processes[harq_idx].is_waiting = 0;
+          LOG_D(MAC, "%s():  RNTI %04x in PUCCH UCI, harq bit %d, idx %d, feedbanck slot %d, round %d, harq value %d, confidence %d\n", __func__, uci_01->rnti,
+          harq_bit, harq_idx, sched_ctrl->harq_processes[harq_idx].feedback_slot, sched_ctrl->harq_processes[harq_idx].round,
+          uci_01->harq->harq_list[harq_bit].harq_value,
+          uci_01->harq->harq_confidence_level);          
         }
       }
     }
@@ -380,6 +392,10 @@ void handle_nr_uci_pucch_2_3_4(module_id_t mod_id,
           else
             sched_ctrl->harq_processes[harq_idx].round++;
           sched_ctrl->harq_processes[harq_idx].is_waiting = 0;
+          LOG_D(MAC, "%s():  RNTI %04x in PUCCH UCI, harq bit %d, idx %d, feedbanck slot %d, round %d, harq crc %d, acknack %d\n", __func__, uci_234->rnti,
+          harq_bit, harq_idx, sched_ctrl->harq_processes[harq_idx].feedback_slot, sched_ctrl->harq_processes[harq_idx].round,
+          uci_234->harq.harq_crc,
+          acknack);          
           harq_idx_s = harq_idx + 1;
           // if the max harq rounds was reached
           if (sched_ctrl->harq_processes[harq_idx].round == max_harq_rounds) {
@@ -400,6 +416,10 @@ void handle_nr_uci_pucch_2_3_4(module_id_t mod_id,
             sched_ctrl->harq_processes[harq_idx].round = 0;
           }
           sched_ctrl->harq_processes[harq_idx].is_waiting = 0;
+          LOG_D(MAC, "%s():  RNTI %04x in PUCCH UCI, harq bit %d, idx %d, feedbanck slot %d, round %d, harq crc %d, acknack %d\n", __func__, uci_234->rnti,
+          harq_bit, harq_idx, sched_ctrl->harq_processes[harq_idx].feedback_slot, sched_ctrl->harq_processes[harq_idx].round,
+          uci_234->harq.harq_crc,
+          acknack);           
         }
       }
     }
@@ -414,7 +434,8 @@ void nr_acknack_scheduling(int Mod_idP,
                            sub_frame_t slotP,
                            int slots_per_tdd,
                            int *pucch_id,
-                           int *pucch_occ) {
+                           int *pucch_occ,
+                           int isUEspec) {
 
   NR_ServingCellConfigCommon_t *scc = RC.nrmac[Mod_idP]->common_channels->ServingCellConfigCommon;
   NR_UE_info_t *UE_info = &RC.nrmac[Mod_idP]->UE_info;
@@ -440,7 +461,15 @@ void nr_acknack_scheduling(int Mod_idP,
     max_acknacks=2;
 
   // this is hardcoded for now as ue specific
-  NR_SearchSpace__searchSpaceType_PR ss_type = NR_SearchSpace__searchSpaceType_PR_ue_Specific;
+  NR_SearchSpace__searchSpaceType_PR ss_type;
+  if( isUEspec == 1)
+  {
+      ss_type = NR_SearchSpace__searchSpaceType_PR_ue_Specific;
+  }
+  else
+  {
+      ss_type = NR_SearchSpace__searchSpaceType_PR_common;
+  }
   get_pdsch_to_harq_feedback(Mod_idP,UE_id,ss_type,pdsch_to_harq_feedback);
 
   // for each possible ul or mixed slot

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c

@@ -395,7 +395,8 @@ void nr_rx_sdu(const module_id_t gnb_mod_idP,
               current_rnti);
         continue;
       }
-      const int UE_id = add_new_nr_ue(gnb_mod_idP, ra->rnti);
+      bool isActive = (get_softmodem_params()->sa_ra ? false:true);
+      const int UE_id = add_new_nr_ue(gnb_mod_idP, ra->rnti, isActive);
       UE_info->secondaryCellGroup[UE_id] = ra->secondaryCellGroup;
       compute_csi_bitlen(ra->secondaryCellGroup, UE_info, UE_id);
       UE_info->UE_beam_index[UE_id] = ra->beam_id;
@@ -420,13 +421,22 @@ void nr_rx_sdu(const module_id_t gnb_mod_idP,
       // re-initialize ta update variables afrer RA procedure completion
       UE_info->UE_sched_ctrl[UE_id].ta_frame = frameP;
 
-      free(ra->preambles.preamble_list);
-      ra->state = RA_IDLE;
-      LOG_I(MAC,
-            "reset RA state information for RA-RNTI %04x/index %d\n",
-            ra->rnti,
-            i);
-
+      if (isActive) // NSA mode
+      {
+        free(ra->preambles.preamble_list);
+        ra->state = RA_IDLE;
+        LOG_I(MAC,
+              "reset RA state information for RA-RNTI %04x/index %d\n",
+              ra->rnti,
+              i);
+      }
+      else  // SA mode
+      {
+        ra->state = Msg4;
+        ra->Msg4_frame = ( frameP +2 ) % 1024;
+        ra->Msg4_slot = 1;
+        LOG_I(MAC, "set RA state to Msg4 for RA-RNTI %04x, msg4 frame %d %d\n", ra->rnti, ra->Msg4_frame, ra->Msg4_slot);
+      }
       return;
     }
   }

openair2/LAYER2/NR_MAC_gNB/mac_proto.h

@@ -84,7 +84,9 @@ void nr_schedule_ue_spec(module_id_t module_id,
 void nr_simple_dlsch_preprocessor(module_id_t module_id,
                                   frame_t frame,
                                   sub_frame_t slot,
-                                  int num_slots_per_tdd);
+                                  int num_slots_per_tdd,
+                                  int rnti_type,
+                                  int UE_id);
 
 void schedule_nr_mib(module_id_t module_idP, frame_t frameP, sub_frame_t subframeP, uint8_t slots_per_frame);
 
@@ -104,7 +106,7 @@ void nr_simple_ulsch_preprocessor(module_id_t module_id,
 
 /////// Random Access MAC-PHY interface functions and primitives ///////
 
-void nr_schedule_RA(module_id_t module_idP, frame_t frameP, sub_frame_t slotP);
+void nr_schedule_RA(module_id_t module_idP, frame_t frameP, sub_frame_t slotP, int num_slots_per_tdd);
 
 /* \brief Function to indicate a received preamble on PRACH.  It initiates the RA procedure.
 @param module_idP Instance ID of gNB
@@ -178,7 +180,8 @@ void nr_fill_nfapi_dl_pdu(int Mod_id,
                           int NrOfSymbols,
                           int harq_pid,
                           int ndi,
-                          int round);
+                          int round,
+                          int rnit_type);
 
 void handle_nr_uci_pucch_0_1(module_id_t mod_id,
                              frame_t frame,
@@ -221,7 +224,8 @@ void nr_acknack_scheduling(int Mod_idP,
                            sub_frame_t slotP,
                            int slots_per_tdd,
                            int *pucch_id,
-                           int *pucch_occ);
+                           int *pucch_occ,
+                           int isUEspec);
 
 int get_pucch_resource(NR_UE_info_t *UE_info,int UE_id,int k,int l);
 
@@ -338,7 +342,7 @@ int find_nr_UE_id(module_id_t mod_idP, rnti_t rntiP);
 
 int find_nr_RA_id(module_id_t mod_idP, int CC_idP, rnti_t rntiP);
 
-int add_new_nr_ue(module_id_t mod_idP, rnti_t rntiP);
+int add_new_nr_ue(module_id_t mod_idP, rnti_t rntiP, bool isActive);
 
 void mac_remove_nr_ue(module_id_t mod_id, rnti_t rnti);
 

openair2/LAYER2/NR_MAC_gNB/main.c

@@ -96,7 +96,7 @@ void mac_top_init_gNB(void)
     // These should be out of here later
     pdcp_layer_init();
 
-    if(IS_SOFTMODEM_NOS1 && !get_softmodem_params()->do_ra)
+    if(IS_SOFTMODEM_NOS1 && !get_softmodem_params()->do_ra && !get_softmodem_params()->sa_ra)
       nr_DRB_preconfiguration(0x1234);
 
     rrc_init_nr_global_param();
@@ -117,6 +117,7 @@ void mac_top_init_gNB(void)
     for (list_el = 0; list_el < MAX_MOBILES_PER_GNB; list_el++) {
       UE_info->list.next[list_el] = -1;
       UE_info->active[list_el] = false;
+      UE_info->rnti[list_el] = 0;
       for (int list_harq = 0; list_harq < NR_MAX_NB_HARQ_PROCESSES; list_harq++) {
         UE_info->UE_sched_ctrl[list_el].harq_processes[list_harq].round = 0;
         UE_info->UE_sched_ctrl[list_el].harq_processes[list_harq].ndi = 0;

openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h

@@ -476,7 +476,9 @@ typedef struct {
 typedef void (*nr_pp_impl_dl)(module_id_t mod_id,
                               frame_t frame,
                               sub_frame_t slot,
-                              int num_slots_per_tdd);
+                              int num_slots_per_tdd,
+                              int rnti_type,
+                              int UE_id);
 typedef void (*nr_pp_impl_ul)(module_id_t mod_id,
                               frame_t frame,
                               sub_frame_t slot,

openair2/NR_UE_PHY_INTERFACE/NR_IF_Module.c

@@ -109,7 +109,7 @@ int nr_ue_ul_indication(nr_uplink_indication_t *ul_info){
 
   ret = nr_ue_scheduler(NULL, ul_info);
 
-  if (is_nr_UL_slot(mac->scc, ul_info->slot_tx) && get_softmodem_params()->do_ra)
+  if (is_nr_UL_slot(mac->scc, ul_info->slot_tx) && (get_softmodem_params()->do_ra || get_softmodem_params()->sa_ra))
     nr_ue_prach_scheduler(module_id, ul_info->frame_tx, ul_info->slot_tx, ul_info->thread_id);
 
   switch(ret){

openair2/RRC/NR/rrc_gNB.c

@@ -225,7 +225,7 @@ static void init_NR_SI(gNB_RRC_INST *rrc, gNB_RrcConfigurationReq *configuration
                          (NR_CellGroupConfig_t *)NULL
                         );
 
-  if (get_softmodem_params()->phy_test > 0 || get_softmodem_params()->do_ra > 0) {
+  if (get_softmodem_params()->phy_test > 0 || get_softmodem_params()->do_ra > 0 || get_softmodem_params()->sa_ra > 0) {
     // This is for phytest only, emulate first X2 message if uecap.raw file is present
     FILE *fd;
     fd = fopen("uecap.raw","r");

openair2/RRC/NR/rrc_gNB_internode.c

@@ -98,7 +98,7 @@ int generate_CG_Config(gNB_RRC_INST *rrc,
   total_size = (enc_rval.encoded+7)>>3;
 
   FILE *fd; // file to be generated for nr-ue
-  if (get_softmodem_params()->phy_test==1 || get_softmodem_params()->do_ra > 0) {
+  if (get_softmodem_params()->phy_test==1 || get_softmodem_params()->do_ra > 0 || get_softmodem_params()->sa_ra > 0) {
     // This is for phytest only, emulate first X2 message if uecap.raw file is present
     LOG_I(RRC,"Dumping NR_RRCReconfiguration message (%jd bytes)\n",(enc_rval.encoded+7)>>3);
     for (int i=0; i<(enc_rval.encoded+7)>>3; i++) {
@@ -123,7 +123,7 @@ int generate_CG_Config(gNB_RRC_INST *rrc,
 
 
   
-  if (get_softmodem_params()->phy_test==1 || get_softmodem_params()->do_ra > 0) {  
+  if (get_softmodem_params()->phy_test==1 || get_softmodem_params()->do_ra > 0 || get_softmodem_params()->sa_ra > 0) {  
 
     LOG_I(RRC,"Dumping scg_RB_Config message (%jd bytes)\n",(enc_rval.encoded+7)>>3);
     for (int i=0; i<(enc_rval.encoded+7)>>3; i++) {

openair2/RRC/NR/rrc_gNB_nsa.c

@@ -162,7 +162,7 @@ void rrc_add_nsa_user(gNB_RRC_INST *rrc,struct rrc_gNB_ue_context_s *ue_context_
   NR_RRCReconfiguration_IEs_t *reconfig_ies=calloc(1,sizeof(NR_RRCReconfiguration_IEs_t));
   ue_context_p->ue_context.reconfig->criticalExtensions.choice.rrcReconfiguration = reconfig_ies;
   carrier->initial_csi_index[rrc->Nb_ue] = 0;
-  if (get_softmodem_params()->phy_test == 1 || get_softmodem_params()->do_ra == 1){
+  if (get_softmodem_params()->phy_test == 1 || get_softmodem_params()->do_ra == 1 || get_softmodem_params()->sa_ra == 1){
     ue_context_p->ue_context.rb_config = calloc(1,sizeof(NR_RRCReconfiguration_t));
     fill_default_rbconfig(ue_context_p->ue_context.rb_config);
   }
@@ -255,7 +255,7 @@ void rrc_add_nsa_user(gNB_RRC_INST *rrc,struct rrc_gNB_ue_context_s *ue_context_
                               1024);
     X2AP_ENDC_SGNB_ADDITION_REQ_ACK(msg).rrc_buffer_size = (enc_rval.encoded+7)>>3;
     itti_send_msg_to_task(TASK_X2AP, ENB_MODULE_ID_TO_INSTANCE(0), msg); //Check right id instead of hardcoding
-  } else if (get_softmodem_params()->do_ra) {
+  } else if (get_softmodem_params()->do_ra || get_softmodem_params()->sa_ra) {
     PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, rrc->module_id, GNB_FLAG_YES, ue_context_p->ue_id_rnti, 0, 0,rrc->module_id);
   }
 

openair2/RRC/NR/rrc_gNB_reconfig.c

@@ -79,7 +79,7 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
   secondaryCellGroup->cellGroupId = scg_id;
   NR_RLC_BearerConfig_t *RLC_BearerConfig = calloc(1,sizeof(*RLC_BearerConfig));
   nr_rlc_bearer_init(RLC_BearerConfig);
-  if (get_softmodem_params()->do_ra)
+  if ((get_softmodem_params()->do_ra) || (get_softmodem_params()->sa_ra))
     nr_drb_config(RLC_BearerConfig->rlc_Config, NR_RLC_Config_PR_um_Bi_Directional);
   else
     nr_drb_config(RLC_BearerConfig->rlc_Config, NR_RLC_Config_PR_am);

openair2/RRC/NR_UE/rrc_UE.c

@@ -458,7 +458,7 @@ NR_UE_RRC_INST_t* openair_rrc_top_init_ue_nr(char* rrc_config_path){
       RRC_LIST_INIT(NR_UE_rrc_inst[nr_ue].CSI_ReportConfig_list, NR_maxNrofCSI_ReportConfigurations);
     }
 
-    if (get_softmodem_params()->phy_test==1 || get_softmodem_params()->do_ra==1) {
+    if (get_softmodem_params()->phy_test==1 || get_softmodem_params()->do_ra || get_softmodem_params()->sa_ra ==1) {
       // read in files for RRCReconfiguration and RBconfig
       FILE *fd;
       char filename[1024];