SSB pattern now hardcoded in rrc, to be taken from config file in the next commit

nfapi/open-nFAPI/nfapi/public_inc/nfapi_nr_interface.h

@@ -28,12 +28,12 @@ typedef struct {
 /*typedef struct {
 	nfapi_tl_t tl;
 	int64_t value;
-} nfapi_int64_tlv_t;
+} nfapi_int64_tlv_t;*/
 
 typedef struct {
 	nfapi_tl_t tl;
 	uint64_t value;
-} nfapi_uint64_tlv_t;*/
+} nfapi_uint64_tlv_t;
 
 // nFAPI enums
 typedef enum {
@@ -175,8 +175,8 @@ typedef struct {
   nfapi_uint16_tlv_t  physical_cell_id;
   nfapi_uint16_tlv_t  half_frame_index;
   nfapi_uint16_tlv_t  ssb_subcarrier_offset;
-  nfapi_uint16_tlv_t  ssb_sib1_position_in_burst;
+  nfapi_uint16_tlv_t  ssb_sib1_position_in_burst; // in sib1
-  nfapi_uint16_tlv_t  ssb_scg_position_in_burst;
+  nfapi_uint64_tlv_t  ssb_scg_position_in_burst;  // in servingcellconfigcommon 
   nfapi_uint16_tlv_t  ssb_periodicity;
   nfapi_uint16_tlv_t  ss_pbch_block_power;
   nfapi_uint16_tlv_t  n_ssb_crb;

openair1/PHY/INIT/nr_init.c

@@ -438,6 +438,7 @@ void nr_phy_config_request(NR_PHY_Config_t *phy_config)
   gNB_config->sch_config.ssb_subcarrier_offset.value    = phy_config->cfg->sch_config.ssb_subcarrier_offset.value;//0;
   gNB_config->sch_config.n_ssb_crb.value                = (phy_config->cfg->rf_config.dl_carrier_bandwidth.value-20);
   gNB_config->sch_config.physical_cell_id.value         = phy_config->cfg->sch_config.physical_cell_id.value;
+  gNB_config->sch_config.ssb_scg_position_in_burst.value= phy_config->cfg->sch_config.ssb_scg_position_in_burst.value;
 
   if (phy_config->cfg->subframe_config.duplex_mode.value == 0) {
     gNB_config->subframe_config.duplex_mode.value    = TDD;

openair1/PHY/INIT/nr_parms.c

@@ -46,7 +46,6 @@ int nr_init_frame_parms0(NR_DL_FRAME_PARMS *fp,
   fp->numerology_index = mu;
   fp->Ncp = Ncp;
   fp->N_RB_DL = N_RB_DL;
-  fp->L_ssb = 255; // TODO get the number of SSB value from higher layers (and config file finally)
 
   switch(mu) {
 
@@ -197,6 +196,7 @@ int nr_init_frame_parms(nfapi_nr_config_request_t* config,
 
   fp->eutra_band = config->nfapi_config.rf_bands.rf_band[0];
   fp->frame_type = !(config->subframe_config.duplex_mode.value);
+  fp->L_ssb = config->sch_config.ssb_scg_position_in_burst.value;
   return nr_init_frame_parms0(fp,
 			      config->subframe_config.numerology_index_mu.value,
 			      config->subframe_config.dl_cyclic_prefix_type.value,

openair1/PHY/defs_nr_common.h

@@ -308,7 +308,7 @@ typedef struct NR_DL_FRAME_PARMS {
   uint16_t ssb_start_subcarrier;
   /// SSB type
   nr_ssb_type_e ssb_type;
-  /// Number of SSB
+  /// SS block pattern (max 64 ssb, each bit is on/off ssb)
   uint64_t L_ssb;
   /// PBCH polar encoder params
   t_nrPolar_params pbch_polar_params;

openair1/SIMULATION/NR_PHY/dlsim.c

@@ -101,7 +101,9 @@ int rrc_init_nr_global_param(void){return(0);}
 
 void config_common(int Mod_idP, 
                    int CC_idP,
+		   int Nid_cell,
                    int nr_bandP,
+		   uint64_t ssb_pattern,
                    uint64_t dl_CarrierFreqP,
                    uint32_t dl_BandwidthP
 		   );
@@ -151,6 +153,8 @@ int main(int argc, char **argv)
   int pbch_tx_ant;
   int N_RB_DL=273,mu=1;
 
+  uint64_t ssb_pattern = 0;
+
   unsigned char frame_type = 0;
   unsigned char pbch_phase = 0;
 
@@ -496,7 +500,7 @@ int main(int argc, char **argv)
   mac_top_init_gNB();
   gNB_mac = RC.nrmac[0];
 
-  config_common(0,0,78,(uint64_t)3640000000L,N_RB_DL);
+  config_common(0,0,Nid_cell,78,ssb_pattern,(uint64_t)3640000000L,N_RB_DL);
   config_nr_mib(0,0,1,kHz30,0,0,0,0);
 
   nr_l2_init_ue();

openair2/LAYER2/NR_MAC_gNB/config.c

@@ -186,7 +186,8 @@ void config_common(int Mod_idP,
                    int CC_idP,
 		   int cellid,
                    int nr_bandP,
-                   uint64_t dl_CarrierFreqP,
+                   uint64_t ssb_pattern,
+		   uint64_t dl_CarrierFreqP,
                    uint32_t dl_BandwidthP
                   ){
 
@@ -195,6 +196,7 @@ void config_common(int Mod_idP,
   int mu = 1;
 
   cfg->sch_config.physical_cell_id.value = cellid;
+  cfg->sch_config.ssb_scg_position_in_burst.value = ssb_pattern;
 
   // FDD
   cfg->subframe_config.duplex_mode.value                          = 1;
@@ -238,6 +240,7 @@ int rrc_mac_config_req_gNB(module_id_t Mod_idP,
 			   int cellid,
                            int p_gNB,
                            int nr_bandP,
+			   uint64_t ssb_pattern,
                            uint64_t dl_CarrierFreqP,
                            int dl_BandwidthP,
                            NR_BCCH_BCH_Message_t *mib,
@@ -262,11 +265,15 @@ int rrc_mac_config_req_gNB(module_id_t Mod_idP,
                );
   }// END if( mib != NULL )
 
+
+
+
   if( servingcellconfigcommon != NULL ){
     config_common(Mod_idP, 
                   CC_idP,
 		  cellid,
                   nr_bandP,
+		  ssb_pattern,
                   dl_CarrierFreqP,
                   dl_BandwidthP
                   );  

openair2/LAYER2/NR_MAC_gNB/mac_proto.h

@@ -38,9 +38,10 @@ void mac_top_init_gNB(void);
 
 int rrc_mac_config_req_gNB(module_id_t Mod_idP, 
                            int CC_id,
-			   int cellid,
+						   int cellid,
                            int p_gNB,
                            int nr_bandP,
+                           uint64_t ssb_pattern,
                            uint64_t dl_CarrierFreqP,
                            int dl_BandwidthP,
                            NR_BCCH_BCH_Message_t *mib,

openair2/RRC/NR/rrc_gNB.c

@@ -261,12 +261,13 @@ static void init_NR_SI(const protocol_ctxt_t* const ctxt_pP,
   
   LOG_I(NR_RRC,"Done init_NR_SI\n");
   
-  
+  uint64_t ssb_pattern = 255;
   rrc_mac_config_req_gNB(ctxt_pP->module_id,
                          CC_id,
 			 RC.nrrrc[ctxt_pP->module_id]->carrier[CC_id].physCellId,
                          RC.nrrrc[ctxt_pP->module_id]->carrier[CC_id].p_gNB,
                          configuration->nr_band[CC_id],
+			 ssb_pattern,
                          RC.nrrrc[ctxt_pP->module_id]->carrier[CC_id].dl_CarrierFreq,
                          configuration->N_RB_DL[CC_id],
                          (NR_BCCH_BCH_Message_t *)&RC.nrrrc[ctxt_pP->module_id]->carrier[CC_id].mib,