Add Positioning Information Request NRPPA message decoding procedures

openair2/COMMON/nrppa_messages_def.h

@@ -24,3 +24,7 @@
 // LMF -> CU
 MESSAGE_DEF(NRPPA_TRP_INFORMATION_REQ, MESSAGE_PRIORITY_MED, nrppa_trp_information_req_t, nrppa_trp_information_req)
 MESSAGE_DEF(NRPPA_TRP_INFORMATION_RESP, MESSAGE_PRIORITY_MED, nrppa_trp_information_resp_t, nrppa_trp_information_resp)
+MESSAGE_DEF(NRPPA_POSITIONING_INFORMATION_REQ,
+            MESSAGE_PRIORITY_MED,
+            nrppa_positioning_information_req_t,
+            nrppa_positioning_information_req)

openair2/COMMON/nrppa_messages_types.h

@@ -26,6 +26,7 @@
 
 #define NRPPA_TRP_INFORMATION_REQ(mSGpTR) (mSGpTR)->ittiMsg.nrppa_trp_information_req
 #define NRPPA_TRP_INFORMATION_RESP(mSGpTR) (mSGpTR)->ittiMsg.nrppa_trp_information_resp
+#define NRPPA_POSITIONING_INFORMATION_REQ(mSGpTR) (mSGpTR)->ittiMsg.nrppa_positioning_information_req
 
 /* Structure of Positioning related NRPPA messages */
 /* IE structures for Positioning related messages as per TS 38.455 V16.7.1*/
@@ -245,4 +246,9 @@ typedef struct nrppa_trp_information_resp_s {
   nrppa_trp_information_list_t trp_information_list;
 } nrppa_trp_information_resp_t;
 
+typedef struct nrppa_positioning_information_req_s {
+  // IE 9.2.4 (mandatory)
+  uint16_t transaction_id;
+} nrppa_positioning_information_req_t;
+
 #endif // NRPPA_MESSAGES_TYPES_H_

openair3/NRPPA/nrppa_gNB_decoder.c

@@ -35,6 +35,11 @@ static int nrppa_gNB_decode_initiating_message(NRPPA_NRPPA_PDU_t *pdu)
       LOG_I(NRPPA, "TRP Information Request initiating message\n");
       free(res.buffer);
       break;
+    case NRPPA_ProcedureCode_id_positioningInformationExchange: // PositioningInformationRequest
+      res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NRPPA_NRPPA_PDU, pdu);
+      LOG_I(NRPPA, "Positioning Information Request initiating message\n");
+      free(res.buffer);
+      break;
 
     default:
       AssertFatal(false, "Unknown procedure ID (%d) for initiating message\n", (int)pdu->choice.initiatingMessage->procedureCode);

openair3/NRPPA/nrppa_gNB_handlers.c

@@ -47,7 +47,9 @@ nrppa_message_decoded_callback nrppa_messages_callback[][3] = {
     {0, 0, 0}, // NRPPA_ProcedureCode_id_oTDOAInformationExchange       ((NRPPA_ProcedureCode_t)6)
     {0, 0, 0}, // NRPPA_ProcedureCode_id_assistanceInformationControl   ((NRPPA_ProcedureCode_t)7)
     {0, 0, 0}, // NRPPA_ProcedureCode_id_assistanceInformationFeedback  ((NRPPA_ProcedureCode_t)8)
-    {0, 0, 0}, // NRPPA_ProcedureCode_id_positioningInformationExchange ((NRPPA_ProcedureCode_t)9)
+    {nrppa_gNB_handle_positioning_information_request,
+     0,
+     0}, // NRPPA_ProcedureCode_id_positioningInformationExchange ((NRPPA_ProcedureCode_t)9)
     {0, 0, 0}, // NRPPA_ProcedureCode_id_positioningInformationUpdate   ((NRPPA_ProcedureCode_t)10)
     {0, 0, 0}, // NRPPA_ProcedureCode_id_Measurement ((NRPPA_ProcedureCode_t)11)
     {0, 0, 0}, // NRPPA_ProcedureCode_id_MeasurementReport      ((NRPPA_ProcedureCode_t)12)

openair3/NRPPA/nrppa_gNB_location_information_transfer.c

@@ -415,3 +415,30 @@ int nrppa_gNB_trp_information_response(instance_t instance, MessageDef *msg_p)
 
   return length;
 }
+
+int nrppa_gNB_handle_positioning_information_request(nrppa_gnb_ue_info_t *nrppa_msg_info, const NRPPA_NRPPA_PDU_t *pdu)
+{
+  DevAssert(pdu != NULL);
+  DevAssert(nrppa_msg_info != NULL);
+
+  if (LOG_DEBUGFLAG(DEBUG_ASN1)) {
+    xer_fprint(stdout, &asn_DEF_NRPPA_NRPPA_PDU, pdu);
+  }
+
+  LOG_I(NRPPA, "Processing Received Positioning Information Request\n");
+
+  // Preparing positioning information request for RRC
+  MessageDef *msg = itti_alloc_new_message(TASK_RRC_GNB, 0, NRPPA_POSITIONING_INFORMATION_REQ);
+  nrppa_positioning_information_req_t *req = &NRPPA_POSITIONING_INFORMATION_REQ(msg);
+
+  // IE 9.2.4 nrppatransactionID : mandatory
+  req->transaction_id = pdu->choice.initiatingMessage->nrppatransactionID;
+
+  nrppa_store_ue_context(nrppa_msg_info, req->transaction_id);
+
+  LOG_I(NRPPA, "Forwarding to RRC Positioning Information Request transaction id=%d\n", req->transaction_id);
+
+  itti_send_msg_to_task(TASK_RRC_GNB, 0, msg);
+  ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_NRPPA_NRPPA_PDU, &pdu);
+  return 0;
+}

openair3/NRPPA/nrppa_gNB_location_information_transfer.h

@@ -28,5 +28,6 @@ int nrppa_gNB_trp_information_response(instance_t instance, MessageDef *msg_p);
 void free_trp_information_request(nrppa_trp_information_req_t *msg);
 NRPPA_TRPInformationItem_t encode_trp_info_type_response_item_nrppa(nrppa_trp_information_type_response_item_t *in);
 void free_trp_information_response(nrppa_trp_information_resp_t *msg);
+int nrppa_gNB_handle_positioning_information_request(nrppa_gnb_ue_info_t *nrppa_msg_info, const NRPPA_NRPPA_PDU_t *pdu);
 
 #endif /* NRPPA_GNB_POSITIONING_PROCEDURES_H_ */