remove unused UE_PF_PO and ue_pf_po_mutex

They use 4G NUMBER_OF_UE_MAX, which is not supposed to be present in 5G.
Further, the mutex and variable are global state; for Paging, we should
use F1.

executables/nr-softmodem.c

@@ -679,9 +679,6 @@ int main( int argc, char **argv ) {
     AssertFatal(ret == 0, "cannot create ITTI tasks\n");
   }
 
-  // init UE_PF_PO and mutex lock
-  pthread_mutex_init(&ue_pf_po_mutex, NULL);
-  memset (&UE_PF_PO[0][0], 0, sizeof(UE_PF_PO_t)*NUMBER_OF_UE_MAX*MAX_NUM_CCs);
   mlockall(MCL_CURRENT | MCL_FUTURE);
   pthread_cond_init(&sync_cond,NULL);
   pthread_mutex_init(&sync_mutex, NULL);
@@ -823,7 +820,6 @@ int main( int argc, char **argv ) {
   pthread_mutex_destroy(&sync_mutex);
   pthread_cond_destroy(&nfapi_sync_cond);
   pthread_mutex_destroy(&nfapi_sync_mutex);
-  pthread_mutex_destroy(&ue_pf_po_mutex);
 
   // *** Handle per CC_id openair0
 

executables/nr-uesoftmodem.c

@@ -567,9 +567,6 @@ int main(int argc, char **argv)
     }
 
     init_openair0();
-    // init UE_PF_PO and mutex lock
-    pthread_mutex_init(&ue_pf_po_mutex, NULL);
-    memset (&UE_PF_PO[0][0], 0, sizeof(UE_PF_PO_t)*NUMBER_OF_UE_MAX*MAX_NUM_CCs);
     set_latency_target();
 
     if(IS_SOFTMODEM_DOSCOPE_QT) {

openair2/RRC/NR/nr_rrc_extern.h

@@ -51,8 +51,4 @@ extern uint16_t RACH_FREQ_ALLOC;
 extern MAC_MEAS_T BCCH_MEAS_TRIGGER,CCCH_MEAS_TRIGGER,DCCH_MEAS_TRIGGER,DTCH_MEAS_TRIGGER;
 extern MAC_AVG_T BCCH_MEAS_AVG,CCCH_MEAS_AVG,DCCH_MEAS_AVG, DTCH_MEAS_AVG;
 
-extern UE_PF_PO_t UE_PF_PO[NFAPI_CC_MAX][MAX_MOBILES_PER_ENB];
-
-extern pthread_mutex_t ue_pf_po_mutex;
-
 #endif

openair2/RRC/NR/rrc_gNB.c

@@ -2698,14 +2698,12 @@ rrc_gNB_generate_RRCRelease(
 int rrc_gNB_generate_pcch_msg(sctp_assoc_t assoc_id, const NR_SIB1_t *sib1, uint32_t tmsi, uint8_t paging_drx)
 {
   instance_t instance = 0;
-  uint8_t CC_id = 0;
   const unsigned int Ttab[4] = {32,64,128,256};
   uint8_t Tc;
   uint8_t Tue;
   uint32_t pfoffset;
   uint32_t N;  /* N: min(T,nB). total count of PF in one DRX cycle */
   uint32_t Ns = 0;  /* Ns: max(1,nB/T) */
-  uint8_t i_s;  /* i_s = floor(UE_ID/N) mod Ns */
   uint32_t T;  /* DRX cycle */
   uint32_t length;
   uint8_t buffer[RRC_BUF_SIZE];
@@ -2767,44 +2765,9 @@ int rrc_gNB_generate_pcch_msg(sctp_assoc_t assoc_id, const NR_SIB1_t *sib1, uint
       return (-1);
   }
 
-  /* insert data to UE_PF_PO or update data in UE_PF_PO */
-  pthread_mutex_lock(&ue_pf_po_mutex);
-  uint8_t i = 0;
-
-  for (i = 0; i < MAX_MOBILES_PER_ENB; i++) {
-    if ((UE_PF_PO[CC_id][i].enable_flag == true && UE_PF_PO[CC_id][i].ue_index_value == (uint16_t)(tmsi%1024))
-        || (UE_PF_PO[CC_id][i].enable_flag != true)) {
-      /* set T = min(Tc,Tue) */
-      UE_PF_PO[CC_id][i].T = T;
-      /* set UE_ID */
-      UE_PF_PO[CC_id][i].ue_index_value = (uint16_t)(tmsi%1024);
-      /* calculate PF and PO */
-      /* set PF_min and PF_offset: (SFN + PF_offset) mod T = (T div N)*(UE_ID mod N) */
-      UE_PF_PO[CC_id][i].PF_min = (T / N) * (UE_PF_PO[CC_id][i].ue_index_value % N);
-      UE_PF_PO[CC_id][i].PF_offset = pfoffset;
-      /* set i_s */
-      /* i_s = floor(UE_ID/N) mod Ns */
-      i_s = (uint8_t)((UE_PF_PO[CC_id][i].ue_index_value / N) % Ns);
-      UE_PF_PO[CC_id][i].i_s = i_s;
-
-      // TODO,set PO
-
-      if (UE_PF_PO[CC_id][i].enable_flag == true) {
-        //paging exist UE log
-        LOG_D(NR_RRC,"[gNB %ld] CC_id %d In rrc_gNB_generate_pcch_msg: Update exist UE %d, T %d, N %d, PF %d, i_s %d, PF_offset %d\n", instance, CC_id, UE_PF_PO[CC_id][i].ue_index_value,
-              T, N, UE_PF_PO[CC_id][i].PF_min, UE_PF_PO[CC_id][i].i_s, UE_PF_PO[CC_id][i].PF_offset);
-      } else {
-        /* set enable_flag */
-        UE_PF_PO[CC_id][i].enable_flag = true;
-        //paging new UE log
-        LOG_D(NR_RRC,"[gNB %ld] CC_id %d In rrc_gNB_generate_pcch_msg: Insert a new UE %d, T %d, N %d, PF %d, i_s %d, PF_offset %d\n", instance, CC_id, UE_PF_PO[CC_id][i].ue_index_value,
-              T, N, UE_PF_PO[CC_id][i].PF_min, UE_PF_PO[CC_id][i].i_s, UE_PF_PO[CC_id][i].PF_offset);
-      }
-      break;
-    }
-  }
-
-  pthread_mutex_unlock(&ue_pf_po_mutex);
+  (void) N; /* not used, suppress warning */
+  (void) Ns; /* not used, suppress warning */
+  (void) pfoffset; /* not used, suppress warning */
 
   /* Create message for PDCP (DLInformationTransfer_t) */
   length = do_NR_Paging (instance,