Add absolute SSB frequency of nr cell as configuration parameter in the eNB...

Add absolute SSB frequency of nr cell as configuration parameter in the eNB configuration file instead of hardcoding it at rrc_eNB for NSA scenario

openair2/COMMON/rrc_messages_types.h

@@ -323,6 +323,8 @@ typedef struct RrcConfigurationReq_s {
   char                          *discRxPoolPS_ResourceConfig_subframeBitmap_choice_bs_buf[MAX_NUM_CCs];
   long                           discRxPoolPS_ResourceConfig_subframeBitmap_choice_bs_size[MAX_NUM_CCs];
   long                           discRxPoolPS_ResourceConfig_subframeBitmap_choice_bs_bits_unused[MAX_NUM_CCs];
+  //Nr secondary cell group SSB central frequency (for ENDC NSA)
+  int                            nr_scg_ssb_freq;
 } RrcConfigurationReq;
 
 #define MAX_NUM_NBIOT_CELEVELS    3

openair2/ENB_APP/enb_config.c

@@ -1576,6 +1576,8 @@ int RCconfig_RRC(uint32_t i, eNB_RRC_INST *rrc, int macrlc_has_f1) {
             } // !NODE_IS_DU(node_type)
           }
 
+          RRC_CONFIGURATION_REQ (msg_p).nr_scg_ssb_freq = ccparams_lte.nr_scg_ssb_freq;
+
           if (!NODE_IS_DU(rrc->node_type)) {
             char srb1path[MAX_OPTNAME_SIZE*2 + 8];
             sprintf(srb1path,"%s.%s",enbpath,ENB_CONFIG_STRING_SRB1);

openair2/ENB_APP/enb_paramdef.h

@@ -429,6 +429,9 @@ typedef enum {
 //SIB1-MBMS
 #define ENB_CONFIG_STRING_MBMS_DEDICATED_SERVING_CELL       "mbms_dedicated_serving_cell"
 
+//NSA NR Cell SSB Absolute Frequency
+#define ENB_CONFIG_STRING_NR_SCG_SSB_FREQ                         "nr_scg_ssb_freq"
+
 
 
 #define ENB_CONFIG_STRING_PDSCH_MAX_NUM_REPETITION_CE_MODE_A_R13        "pdsch_maxNumRepetitionCEmodeA_r13"
@@ -577,6 +580,7 @@ typedef struct ccparams_lte_s {
   int32_t           srb1_poll_pdu;
   int32_t           srb1_poll_byte;
   int32_t           srb1_max_retx_threshold;
+  int32_t           nr_scg_ssb_freq;
 } ccparams_lte_t;
 
 #define CCPARAMS_CHECK {                             \
@@ -780,7 +784,8 @@ typedef struct ccparams_lte_s {
   {ENB_CONFIG_STRING_UETIMERS_N311,                                NULL,   0,           iptr:&ccparams.ue_TimersAndConstants_n311,               defintval:1,               TYPE_UINT,       0},  \
   {ENB_CONFIG_STRING_UE_TRANSMISSION_MODE,                         NULL,   0,           iptr:&ccparams.ue_TransmissionMode,                      defintval:1,               TYPE_UINT,       0},  \
   {ENB_CONFIG_STRING_UE_MULTIPLE_MAX,                              NULL,   0,           iptr:&ccparams.ue_multiple_max,                          defintval:4,               TYPE_UINT,       0},  \
-  {ENB_CONFIG_STRING_MBMS_DEDICATED_SERVING_CELL,                  NULL,   0,           strptr:&ccparams.mbms_dedicated_serving_cell,  defstrval:"DISABLE",       TYPE_STRING,       0}  \
+  {ENB_CONFIG_STRING_MBMS_DEDICATED_SERVING_CELL,                  NULL,   0,           strptr:&ccparams.mbms_dedicated_serving_cell,            defstrval:"DISABLE",       TYPE_STRING,     0},  \
+  {ENB_CONFIG_STRING_NR_SCG_SSB_FREQ,                              NULL,   0,           iptr:&ccparams.nr_scg_ssb_freq,                        defintval:641272,          TYPE_INT,        0}   \
 }
 
 

openair2/RRC/LTE/rrc_defs.h

@@ -790,7 +790,10 @@ typedef struct eNB_RRC_INST_s {
   int num_neigh_cells;
   int num_neigh_cells_cc[MAX_NUM_CCs];
   uint32_t neigh_cells_id[MAX_NUM_NEIGH_CELLs][MAX_NUM_CCs];
+
+  // Nr scc freq band and SSB absolute frequency
   uint32_t nr_neigh_freq_band[MAX_NUM_NEIGH_CELLs][MAX_NUM_CCs];
+  int nr_scg_ssb_freq;
 
   // other RAN parameters
   int srb1_timer_poll_retransmit;

openair2/RRC/LTE/rrc_eNB.c

@@ -3289,7 +3289,7 @@ void rrc_eNB_generate_defaultRRCConnectionReconfiguration(const protocol_ctxt_t
 
     MeasObj2->measObjectId = 2;
     MeasObj2->measObject.present = LTE_MeasObjectToAddMod__measObject_PR_measObjectNR_r15;
-    MeasObj2->measObject.choice.measObjectNR_r15.carrierFreq_r15 =641272; //634000; //(634000 = 3.51GHz) (640000 = 3.6GHz) (641272 = 3619.08MHz = 3600 + 30/1000*106*12/2) (642256 is for 3.6GHz and absoluteFrequencySSB = 642016)
+    MeasObj2->measObject.choice.measObjectNR_r15.carrierFreq_r15 = rrc_inst->nr_scg_ssb_freq; //641272; //634000; //(634000 = 3.51GHz) (640000 = 3.6GHz) (641272 = 3619.08MHz = 3600 + 30/1000*106*12/2) (642256 is for 3.6GHz and absoluteFrequencySSB = 642016)
     MeasObj2->measObject.choice.measObjectNR_r15.rs_ConfigSSB_r15.measTimingConfig_r15.periodicityAndOffset_r15.present = LTE_MTC_SSB_NR_r15__periodicityAndOffset_r15_PR_sf20_r15;
     MeasObj2->measObject.choice.measObjectNR_r15.rs_ConfigSSB_r15.measTimingConfig_r15.periodicityAndOffset_r15.choice.sf20_r15 = 0;
     MeasObj2->measObject.choice.measObjectNR_r15.rs_ConfigSSB_r15.measTimingConfig_r15.ssb_Duration_r15 = LTE_MTC_SSB_NR_r15__ssb_Duration_r15_sf4;
@@ -7034,6 +7034,8 @@ char openair_rrc_eNB_configuration(
     openair_rrc_top_init_eNB(RC.rrc[ctxt.module_id]->carrier[CC_id].MBMS_flag,0);
   }
 
+  RC.rrc[ctxt.module_id]->nr_scg_ssb_freq = configuration->nr_scg_ssb_freq;
+
   openair_rrc_on(&ctxt);
 
   /*

targets/PROJECTS/GENERIC-LTE-EPC/CONF/testing_enb.conf

@@ -141,6 +141,9 @@ eNBs =
       discRxPool_ResourceConfig_subframeBitmap_choice_bs_size         = 5;
       discRxPool_ResourceConfig_subframeBitmap_choice_bs_bits_unused  = 0;
       
+      //SSB central frequency of NR secondary cell group (for ENDC NSA) 
+      nr_scg_ssb_freq												  = 641272;	
+
 			 }
 			 );