Adding one UL empty slot before actual UL slot

- total num of symbols is 12 instead of 14 in PUSCH
- actual UL slot is 3 instead of 2

executables/nr-ue.c

@@ -382,7 +382,7 @@ void processSlotRX( PHY_VARS_NR_UE *UE, UE_nr_rxtx_proc_t *proc) {
     n_rnti = 0x1234;
     nb_rb = 50;
     start_rb = 0;
-    nb_symb_sch = 14;
+    nb_symb_sch = 12;
     start_symbol = 0;
     precod_nbr_layers = 1;
     mcs = 9;
@@ -736,6 +736,18 @@ void *UE_thread(void *arg) {
                                            readBlockSize,
                                            UE->frame_parms.nb_antennas_rx),"");
 
+if (slot_nr == (20+NR_UPLINK_SLOT-DURATION_RX_TO_TX - 1)%20)
+    AssertFatal( writeBlockSize ==
+                 UE->rfdevice.trx_write_func(&UE->rfdevice,
+                     timestamp+
+                     (DURATION_RX_TO_TX*UE->frame_parms.samples_per_slot) -
+                     UE->frame_parms.ofdm_symbol_size-UE->frame_parms.nb_prefix_samples0 -
+                     openair0_cfg[0].tx_sample_advance,
+                     txp,
+                     writeBlockSize,
+                     UE->frame_parms.nb_antennas_tx,
+                     2),"");
+
 if (slot_nr == (20+NR_UPLINK_SLOT-DURATION_RX_TO_TX)%20)
     AssertFatal( writeBlockSize ==
                  UE->rfdevice.trx_write_func(&UE->rfdevice,
@@ -746,7 +758,7 @@ if (slot_nr == (20+NR_UPLINK_SLOT-DURATION_RX_TO_TX)%20)
                      txp,
                      writeBlockSize,
                      UE->frame_parms.nb_antennas_tx,
-                     4),"");
+                     3),"");
 
     if( slot_nr==(nb_slot_frame-1)) {
       // read in first symbol of next frame and adjust for timing drift

openair1/PHY/impl_defs_nr.h

@@ -119,7 +119,7 @@ SystemInformationBlockType1_nr_t;
 #define NR_TDD_SET_ALL_SYMBOLS             (0x3FFF)
 
 #define NR_DOWNLINK_SLOT                   (0x01)
-#define NR_UPLINK_SLOT                     (0x02)
+#define NR_UPLINK_SLOT                     (0x03)
 
 #define FRAME_DURATION_MICRO_SEC           (10000)  /* frame duration in microsecond */
 

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler.c

@@ -375,11 +375,11 @@ void gNB_dlsch_ulsch_scheduler(module_id_t module_idP,
 
   // Phytest scheduling
  
-  if (slot_rxP==2){
+  if (slot_rxP==NR_UPLINK_SLOT){
     nr_schedule_uss_ulsch_phytest(&RC.nrmac[module_idP]->UL_tti_req[0], frame_rxP, slot_rxP);
   }
   
-  if (slot_txP==1){
+  if (slot_txP==NR_DOWNLINK_SLOT){
     nr_schedule_uss_dlsch_phytest(module_idP, frame_txP, slot_txP,NULL);
   }
 

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c

@@ -527,7 +527,7 @@ void nr_schedule_uss_ulsch_phytest(nfapi_nr_ul_tti_request_t *UL_tti_req,
     pusch_pdu->uplink_frequency_shift_7p5khz = 0;
     //Resource Allocation in time domain
     pusch_pdu->start_symbol_index = 0;
-    pusch_pdu->nr_of_symbols = 14;
+    pusch_pdu->nr_of_symbols = 12;
     //Optional Data only included if indicated in pduBitmap
     pusch_pdu->pusch_data.rv_index = 0;
     pusch_pdu->pusch_data.harq_process_id = 0;