added longer prefix in PRACH symbol zero period for 15/30 kHz SCS. Both gNB...

added longer prefix in PRACH symbol zero period for 15/30 kHz SCS. Both gNB and UE processing is modified. prachsim is functional again with new FAPI interfaces.

executables/nr-ru.c

@@ -1578,7 +1578,11 @@ void *ru_thread( void *param ) {
       // Do PRACH RU processing
       int prach_id=find_nr_prach_ru(ru,proc->frame_rx,proc->tti_rx,SEARCH_EXIST);
       if (prach_id>=0) {
-	rx_nr_prach_ru(ru,ru->prach_list[prach_id].fmt,proc->frame_rx,proc->tti_rx);
+	rx_nr_prach_ru(ru,
+		       ru->prach_list[prach_id].fmt,
+		       ru->prach_list[prach_id].numRA,
+		       ru->prach_list[prach_id].prachStartSymbol,
+		       proc->frame_rx,proc->tti_rx);
 	free_nr_ru_prach_entry(ru,prach_id);
       }
     }

openair1/PHY/INIT/nr_init.c

@@ -387,7 +387,7 @@ void nr_phy_config_request_sim(PHY_VARS_gNB *gNB,
   fp->dl_CarrierFreq = 3500000000;//from_nrarfcn(gNB_config->nfapi_config.rf_bands.rf_band[0],gNB_config->nfapi_config.nrarfcn.value);
   fp->ul_CarrierFreq = 3500000000;//fp->dl_CarrierFreq - (get_uldl_offset(gNB_config->nfapi_config.rf_bands.rf_band[0])*100000);
   fp->nr_band = 78;
-  fp->threequarter_fs= 0;
+//  fp->threequarter_fs= 0;
 
   gNB_config->carrier_config.dl_bandwidth.value = config_bandwidth(mu, N_RB_DL, fp->nr_band);
 

openair1/PHY/NR_TRANSPORT/nr_transport.h

@@ -122,6 +122,8 @@ void rx_nr_prach(PHY_VARS_gNB *gNB,
 
 void rx_nr_prach_ru(RU_t *ru,
 		    int prach_fmt,
+		    int numRA,
+		    int prachStartSymbol,
 		    int frame,
 		    int subframe);
 

openair1/PHY/NR_UE_TRANSPORT/nr_prach.c

@@ -41,6 +41,8 @@
 
 #include "T.h"
 
+#define NR_PRACH_DEBUG 1
+
 extern uint16_t NCS_unrestricted_delta_f_RA_125[16];
 extern uint16_t NCS_restricted_TypeA_delta_f_RA_125[15];
 extern uint16_t NCS_restricted_TypeB_delta_f_RA_125[13];
@@ -111,7 +113,7 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 
 #else //normal case (simulation)
   prach_start = subframe*(fp->samples_per_slot<<1)-ue->N_TA_offset;
-  LOG_D(PHY,"[UE %d] prach_start %d, rx_offset %d, hw_timing_advance %d, N_TA_offset %d\n", ue->Mod_id,
+  LOG_I(PHY,"[UE %d] prach_start %d, rx_offset %d, hw_timing_advance %d, N_TA_offset %d\n", ue->Mod_id,
     prach_start,
     ue->rx_offset,
     ue->hw_timing_advance,
@@ -222,7 +224,7 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 #ifdef NR_PRACH_DEBUG
 
   if (NCS>0)
-    LOG_D(PHY,"Generate PRACH for RootSeqIndex %d, Preamble Index %d, PRACH Format %x, prach_ConfigIndex %d, NCS %d (NCS_config %d, N_ZC/NCS %d): Preamble_offset %d, Preamble_shift %d\n",
+    LOG_I(PHY,"Generate PRACH for RootSeqIndex %d, Preamble Index %d, PRACH Format %x, prach_ConfigIndex %d, NCS %d (NCS_config %d, N_ZC/NCS %d): Preamble_offset %d, Preamble_shift %d\n",
           rootSequenceIndex,preamble_index,prach_fmt,prach_ConfigIndex,NCS,Ncs_config,N_ZC/NCS,
           preamble_offset,preamble_shift);
 
@@ -251,7 +253,7 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
   k*=K;
   k+=kbar;
 
-  LOG_D(PHY,"placing prach in position %d\n",k);
+  LOG_I(PHY,"placing prach in position %d\n",k);
   k*=2;
 
   Xu = (int16_t*)ue->X_u[preamble_offset-first_nonzero_root_idx];
@@ -427,6 +429,7 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	dftlen=12288;
       }
       else if (prach_fmt == 0xa1 || prach_fmt == 0xb1 || prach_fmt == 0xc0) {
+	Ncp+=32; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
 	prach2 = prach+(Ncp<<1);
 	idft2048(prachF,prach2,1);
 	dftlen=2048;
@@ -440,6 +443,8 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	// here we have |Prefix | Prach2048 | Prach2048 (if ! 0xc0)  | 
       }
       else if (prach_fmt == 0xa2 || prach_fmt == 0xb2) { // 6x2048
+	Ncp+=32; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
+	prach2 = prach+(Ncp<<1);
 	idft2048(prachF,prach2,1);
 	dftlen=2048;
 	// here we have |empty | Prach2048 |
@@ -452,6 +457,7 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	prach_len = (2048*4)+Ncp; 
       }
       else if (prach_fmt == 0xa3 || prach_fmt == 0xb3) { // 6x2048
+	Ncp+=32;
 	prach2 = prach+(Ncp<<1);
 	idft2048(prachF,prach2,1);
 	dftlen=2048;
@@ -467,6 +473,8 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	prach_len = (2048*6)+Ncp; 
       }
       else if (prach_fmt == 0xb4) { // 12x2048
+	Ncp+=32; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
+	prach2 = prach+(Ncp<<1);
 	idft2048(prachF,prach2,1);
 	dftlen=2048;
 	// here we have |empty | Prach2048 |
@@ -527,6 +535,8 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	prach_len = (9216*4)+Ncp;
       }
       else if (prach_fmt == 0xa1 || prach_fmt == 0xb1 || prach_fmt == 0xc0) {
+	Ncp+=24; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
+	prach2 = prach+(Ncp<<1);
 	idft1536(prachF,prach2,1);
 	dftlen=1536;
 	// here we have |empty | Prach1536 |
@@ -540,6 +550,8 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	
       }
       else if (prach_fmt == 0xa2 || prach_fmt == 0xb2) { // 6x1536
+	Ncp+=24; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
+	prach2 = prach+(Ncp<<1);
 	idft1536(prachF,prach2,1);
 	dftlen=1536;
 	// here we have |empty | Prach1536 |
@@ -552,6 +564,8 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	prach_len = (1536*4)+Ncp; 
       }
       else if (prach_fmt == 0xa3 || prach_fmt == 0xb3) { // 6x1536
+	Ncp+=24; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
+	prach2 = prach+(Ncp<<1);
 	idft1536(prachF,prach2,1);
 	dftlen=1536;
 	// here we have |empty | Prach1536 |
@@ -566,6 +580,8 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	prach_len = (1536*6)+Ncp; 
       }
       else if (prach_fmt == 0xb4) { // 12x1536
+	Ncp+=24; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
+	prach2 = prach+(Ncp<<1);
 	idft1536(prachF,prach2,1);
 	dftlen=1536;
 	// here we have |empty | Prach1536 |
@@ -627,6 +643,8 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	prach_len = (24576*4)+Ncp;
       }
       else if (prach_fmt == 0xa1 || prach_fmt == 0xb1 || prach_fmt == 0xc0) {
+	Ncp+=64; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
+	prach2 = prach+(Ncp<<1);
 	idft4096(prachF,prach2,1);
 	dftlen=4096;
 	// here we have |empty | Prach4096 |
@@ -640,6 +658,8 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 
       }
       else if (prach_fmt == 0xa2 || prach_fmt == 0xb2) { // 4x4096
+	Ncp+=64; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
+	prach2 = prach+(Ncp<<1);
 	idft4096(prachF,prach2,1);
 	dftlen=4096;
 	// here we have |empty | Prach4096 |
@@ -652,6 +672,8 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	prach_len = (4096*4)+Ncp;  
       }
       else if (prach_fmt == 0xa3 || prach_fmt == 0xb3) { // 6x4096
+	Ncp+=64; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
+	prach2 = prach+(Ncp<<1);
 	idft4096(prachF,prach2,1);
 	dftlen=4096;
 	// here we have |empty | Prach4096 |
@@ -666,6 +688,8 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	prach_len = (4096*6)+Ncp; 
       }
       else if (prach_fmt == 0xb4) { // 12x4096
+	Ncp+=64; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
+	prach2 = prach+(Ncp<<1);
 	idft4096(prachF,prach2,1);
 	dftlen=4096;
 	// here we have |empty | Prach4096 |
@@ -725,6 +749,8 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	prach_len = (18432*4)+Ncp;
       }
       else if (prach_fmt == 0xa1 || prach_fmt == 0xb1 || prach_fmt == 0xc0) {
+	Ncp+=48; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
+	prach2 = prach+(Ncp<<1);
 	idft3072(prachF,prach2,1);
 	dftlen=3072;
 	// here we have |empty | Prach3072 |
@@ -737,6 +763,8 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	// here we have |Prefix | Prach3072 | Prach3072 (if ! 0xc0)  | 
       }
       else if (prach_fmt == 0xa3 || prach_fmt == 0xb3) { // 6x3072
+	Ncp+=48; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
+	prach2 = prach+(Ncp<<1);
 	idft3072(prachF,prach2,1);
 	dftlen=3072;
 	// here we have |empty | Prach3072 |
@@ -751,6 +779,8 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	prach_len = (3072*6)+Ncp;
       }
       else if (prach_fmt == 0xa2 || prach_fmt == 0xb2) { // 4x3072
+	Ncp+=48; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
+	prach2 = prach+(Ncp<<1);
 	idft3072(prachF,prach2,1);
 	dftlen=3072;
 	// here we have |empty | Prach3072 |
@@ -763,6 +793,8 @@ int32_t generate_nr_prach(PHY_VARS_NR_UE *ue, uint8_t gNB_id, uint8_t subframe)
 	prach_len = (3072*4)+Ncp;
       }
       else if (prach_fmt == 0xb4) { // 12x3072
+	Ncp+=48; // This assumes we are transmitting starting in symbol 0 of a PRACH slot, 30 kHz, full sampling
+	prach2 = prach+(Ncp<<1);
 	idft3072(prachF,prach2,1);
 	dftlen=3072;
 	// here we have |empty | Prach3072 |

openair1/PHY/defs_RU.h

@@ -193,6 +193,8 @@ typedef struct {
   int frame;
   int slot;
   int fmt;
+  int numRA;
+  int prachStartSymbol;
 } RU_PRACH_list_t;
 
 #define NUMBER_OF_NR_RU_PRACH_MAX 8

openair1/SCHED_NR_UE/phy_procedures_nr_ue.c

@@ -212,9 +212,7 @@ void nr_dump_dlsch_SI(PHY_VARS_NR_UE *ue,UE_nr_rxtx_proc_t *proc,uint8_t eNB_id,
 
 #endif
 
-#if defined(EXMIMO) || defined(OAI_USRP) || defined(OAI_BLADERF) || defined(OAI_LMSSDR) || defined(OAI_ADRV9371_ZC706)
 unsigned int gain_table[31] = {100,112,126,141,158,178,200,224,251,282,316,359,398,447,501,562,631,708,794,891,1000,1122,1258,1412,1585,1778,1995,2239,2512,2818,3162};
-#endif
 
 int get_tx_amp_prach(int power_dBm, int power_max_dBm, int N_RB_UL){
 
@@ -4490,7 +4488,7 @@ uint8_t nr_is_ri_TXOp(PHY_VARS_NR_UE *ue,
 void nr_ue_prach_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t gNB_id, runmode_t runmode) {
 
   int frame_tx = proc->frame_tx, nr_tti_tx = proc->nr_tti_tx, prach_power, tx_amp;
-  uint16_t preamble_tx = 50, pathloss;
+  uint16_t /*preamble_tx = 50,*/ pathloss;
   uint8_t mod_id = ue->Mod_id;
   UE_MODE_t UE_mode = get_nrUE_mode(mod_id, ue->CC_id, gNB_id);
   NR_PRACH_RESOURCES_t * prach_resources = ue->prach_resources[gNB_id];
@@ -4499,7 +4497,7 @@ void nr_ue_prach_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
 
   ue->generate_nr_prach = 0;
   if (ue->mac_enabled == 0){
-    prach_resources->ra_PreambleIndex = preamble_tx;
+    //    prach_resources->ra_PreambleIndex = preamble_tx;
     prach_resources->ra_TDD_map_index = 0;
     prach_resources->ra_PREAMBLE_RECEIVED_TARGET_POWER = 10;
     prach_resources->ra_RNTI = 0x1234;

openair1/SIMULATION/NR_PHY/nr_unitary_defs.h

@@ -55,4 +55,15 @@ signed char quantize(double D, double x, unsigned char B) {
   return ((char) qxd);
 }
 
+int8_t nr_ue_get_SR(module_id_t module_idP, int CC_id, frame_t frameP, uint8_t eNB_id, uint16_t rnti, sub_frame_t subframe) {
+  AssertFatal(1==0,"Shouldn't be here ...\n");
+  return 0;
+}
+
+int oai_nfapi_rach_ind(nfapi_rach_indication_t *rach_ind) {return(0);}
+NR_IF_Module_t *NR_IF_Module_init(int Mod_id){return(NULL);}
+int oai_nfapi_ul_config_req(nfapi_ul_config_request_t *ul_config_req) { return(0); }
+
+
+
 #endif

openair1/SIMULATION/NR_PHY/prachsim.c

@@ -42,11 +42,15 @@
 #include "PHY/MODULATION/modulation_UE.h"
 #include "PHY/INIT/phy_init.h"
 #include "PHY/NR_TRANSPORT/nr_transport.h"
+#include "PHY/NR_TRANSPORT/nr_transport_proto_common.h"
 #include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h"
+#include "nr_unitary_defs.h"
 #include "OCG_vars.h"
 
 #include <pthread.h>
 
+
+
 PHY_VARS_gNB *gNB;
 PHY_VARS_NR_UE *UE;
 RAN_CONTEXT_t RC;
@@ -59,27 +63,33 @@ extern uint16_t prach_root_sequence_map0_3[838];
 void dump_nr_prach_config(NR_DL_FRAME_PARMS *frame_parms,uint8_t subframe);
 
 uint16_t NB_UE_INST=1;
-volatile int oai_exit=0;
-
-void exit_function(const char* file, const char* function, const int line,const char *s) { 
-   const char * msg= s==NULL ? "no comment": s;
-   printf("Exiting at: %s:%d %s(), %s\n", file, line, function, msg); 
-   exit(-1); 
-}
 
 
-int8_t nr_ue_get_SR(module_id_t module_idP, int CC_id, frame_t frameP, uint8_t eNB_id, uint16_t rnti, sub_frame_t subframe) {
-  AssertFatal(1==0,"Shouldn't be here ...\n");
-  return 0;
-}
-
-int oai_nfapi_rach_ind(nfapi_rach_indication_t *rach_ind) {return(0);}
 
 openair0_config_t openair0_cfg[MAX_CARDS];
 uint8_t nfapi_mode=0;
-NR_IF_Module_t *NR_IF_Module_init(int Mod_id){return(NULL);}
-int oai_nfapi_ul_config_req(nfapi_ul_config_request_t *ul_config_req) { return(0); }
 
+void nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources,
+		      module_id_t mod_id,
+		      int CC_id,
+		      UE_MODE_t UE_mode,
+		      frame_t frame,
+		      uint8_t gNB_id,
+		      int nr_tti_tx) { return;}
+
+void nr_Msg1_transmitted(module_id_t mod_id, uint8_t CC_id, frame_t frameP, uint8_t gNB_id) { return;}
+
+uint16_t nr_ue_process_rar(module_id_t mod_id,
+                           int CC_id,
+                           frame_t frameP,
+                           uint8_t * dlsch_buffer,
+                           rnti_t * t_crnti,
+                           uint8_t preamble_index,
+                           uint8_t * selected_rar_buffer) { return 0;}
+
+int is_nr_prach_subframe(NR_DL_FRAME_PARMS *fp,uint32_t frame,uint8_t slot) { return(1);}
+
+int get_nr_prach_fmt(int prachConfigIndex,int frame_type,int fr) { return(0xa2); }
 
 int main(int argc, char **argv)
 {
@@ -203,7 +213,7 @@ int main(int argc, char **argv)
         break;
 
       default:
-        msg("Unsupported channel model!\n");
+        printf("Unsupported channel model!\n");
         exit(-1);
       }
 
@@ -219,13 +229,13 @@ int main(int argc, char **argv)
 
     case 's':
       snr0 = atof(optarg);
-      msg("Setting SNR0 to %f\n",snr0);
+      printf("Setting SNR0 to %f\n",snr0);
       break;
 
     case 'S':
       snr1 = atof(optarg);
       snr1set=1;
-      msg("Setting SNR1 to %f\n",snr1);
+      printf("Setting SNR1 to %f\n",snr1);
       break;
 
     case 'p':
@@ -268,7 +278,7 @@ int main(int argc, char **argv)
       if ((transmission_mode!=1) &&
           (transmission_mode!=2) &&
           (transmission_mode!=6)) {
-        msg("Unsupported transmission mode %d\n",transmission_mode);
+        printf("Unsupported transmission mode %d\n",transmission_mode);
         exit(-1);
       }
 
@@ -278,7 +288,7 @@ int main(int argc, char **argv)
       n_tx=atoi(optarg);
 
       if ((n_tx==0) || (n_tx>2)) {
-        msg("Unsupported number of tx antennas %d\n",n_tx);
+        printf("Unsupported number of tx antennas %d\n",n_tx);
         exit(-1);
       }
 
@@ -288,7 +298,7 @@ int main(int argc, char **argv)
       n_rx=atoi(optarg);
 
       if ((n_rx==0) || (n_rx>2)) {
-        msg("Unsupported number of rx antennas %d\n",n_rx);
+        printf("Unsupported number of rx antennas %d\n",n_rx);
         exit(-1);
       }
 
@@ -400,10 +410,24 @@ int main(int argc, char **argv)
   ru->nb_tx = n_tx;
   ru->nb_rx = n_rx;
 
+  gNB->gNB_config.carrier_config.num_tx_ant.value=1;
+  gNB->gNB_config.carrier_config.num_rx_ant.value=1;
+  gNB->gNB_config.prach_config.num_prach_fd_occasions_list = (nfapi_nr_num_prach_fd_occasions_t *) malloc(gNB->gNB_config.prach_config.num_prach_fd_occasions.value*sizeof(nfapi_nr_num_prach_fd_occasions_t));
+  gNB->gNB_config.prach_config.num_prach_fd_occasions_list[0].prach_root_sequence_index.value = 1;
+  gNB->gNB_config.prach_config.num_prach_fd_occasions_list[0].num_root_sequences.value        = 16;
+  gNB->gNB_config.prach_config.prach_sequence_length.value     = 1;
+  gNB->gNB_config.prach_config.num_prach_fd_occasions_list[0].k1.value                        = 0;
+  gNB->gNB_config.prach_config.restricted_set_config.value                                    = 0;
+  gNB->gNB_config.tdd_table.tdd_period.value                                                  = 6;
+
+  memcpy((void*)&ru->config,(void*)&RC.gNB[0]->gNB_config,sizeof(ru->config));
+
   RC.nb_nr_L1_inst=1;
   phy_init_nr_gNB(gNB,0,0);
   nr_phy_init_RU(ru);
-  set_tdd_config_nr(&gNB->gNB_config, 5000,
+
+
+  set_tdd_config_nr(&gNB->gNB_config, 1,
 		    7, 6,
 		    2, 4);
 
@@ -481,21 +505,9 @@ int main(int argc, char **argv)
   gNB->common_vars.rxdata = ru->common.rxdata;
 
 
-  compute_nr_prach_seq(gNB->frame_parms.prach_config_common.rootSequenceIndex,
-		       gNB->frame_parms.prach_config_common.prach_ConfigInfo.prach_ConfigIndex,
-		       gNB->frame_parms.prach_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig,
-		       gNB->frame_parms.prach_config_common.prach_ConfigInfo.highSpeedFlag,
-		       gNB->frame_parms.frame_type,
-		       gNB->frame_parms.freq_range,
-		       gNB->X_u);
+  compute_nr_prach_seq(&gNB->gNB_config,0,gNB->X_u);
 
-  compute_nr_prach_seq(UE->frame_parms.prach_config_common.rootSequenceIndex,
-		       UE->frame_parms.prach_config_common.prach_ConfigInfo.prach_ConfigIndex,
-		       UE->frame_parms.prach_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig,
-		       UE->frame_parms.prach_config_common.prach_ConfigInfo.highSpeedFlag,
-		       UE->frame_parms.frame_type,
-		       UE->frame_parms.freq_range,
-		       UE->X_u);
+  compute_nr_prach_seq(&gNB->gNB_config,0,UE->X_u);
 
 
 
@@ -517,6 +529,7 @@ int main(int argc, char **argv)
 			     subframe); */ //commented for testing purpose
 
   UE_nr_rxtx_proc_t proc={0};
+  proc.frame_tx=0;proc.nr_tti_tx=subframe;
   nr_ue_prach_procedures(UE,&proc,0,0);
 
   /* tx_lev_dB not used later, no need to set */
@@ -526,7 +539,7 @@ int main(int argc, char **argv)
   //LOG_M("txsig1.m","txs1", txdata[1],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
 
   // multipath channel
-  dump_nr_prach_config(&gNB->frame_parms,subframe);
+  //  dump_nr_prach_config(&gNB->frame_parms,subframe);
 
   for (i=0; i<frame_parms->samples_per_slot<<1; i++) {
     for (aa=0; aa<1; aa++) {
@@ -589,17 +602,25 @@ int main(int argc, char **argv)
         }
 	uint16_t preamble_rx;
         rx_nr_prach_ru(ru,
+		       1,
 		       0,
-		       subframe);
+		       0,
+		       0,
+		       subframe<<1);
 	gNB->prach_vars.rxsigF = ru->prach_rxsigF;
 
+
+	nfapi_nr_prach_pdu_t prach_pdu;
+	prach_pdu.num_cs = 34;
+	prach_pdu.prach_format = 1; // A2
+
         rx_nr_prach(gNB,
+		    &prach_pdu,
 		    0,
-		    subframe,
+		    subframe<<1,
 		    &preamble_rx,
 		    &preamble_energy,
 		    &preamble_delay);
-        printf("preamble_rx %d\n", preamble_rx);
          if (preamble_rx!=preamble_tx)
           prach_errors++;
         else {