Added message-based communication between L2 and L1 regarding NTN configuration parameters

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

@@ -51,7 +51,9 @@
 #define FAPI_NR_DL_CONFIG_TYPE_CSI_RS 0x06
 #define FAPI_NR_DL_CONFIG_TYPE_CSI_IM 0x07
 #define FAPI_NR_CONFIG_TA_COMMAND 0x08
-#define FAPI_NR_DL_CONFIG_TYPES 0x08
+#define FAPI_NR_DL_NTN_CONFIG_PARAMS 0x09
+#define FAPI_NR_DL_CONFIG_TYPES 0x09
+
 
 #define FAPI_NR_CCE_REG_MAPPING_TYPE_INTERLEAVED 0x01
 #define FAPI_NR_CCE_REG_MAPPING_TYPE_NON_INTERLEAVED 0x02

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

@@ -555,6 +555,19 @@ typedef struct {
  bool is_rar;
 } fapi_nr_ta_command_pdu;
 
+typedef struct {
+  // N_common_ta_adj represents common propagation delay received in SIB19 (ms)
+  double N_common_ta_adj;
+  // N_UE_TA_adj calculated propagation delay from UE and SAT (ms)
+  double N_UE_TA_adj;
+  // drift rate of common ta in µs/s
+  double ntn_ta_commondrift;
+  // cell scheduling offset expressed in terms of 15kHz SCS
+  long cell_specific_k_offset;
+
+  double ntn_total_time_advance_ms;
+} fapi_nr_dl_ntn_config_command_pdu;
+
 typedef struct {
   uint8_t pdu_type;
   union {
@@ -563,6 +576,7 @@ typedef struct {
     fapi_nr_dl_config_csirs_pdu csirs_config_pdu;
     fapi_nr_dl_config_csiim_pdu csiim_config_pdu;
     fapi_nr_ta_command_pdu ta_command_pdu;
+    fapi_nr_dl_ntn_config_command_pdu ntn_config_command_pdu;
   };
 } fapi_nr_dl_config_request_pdu_t;