implement rrcReestablishmentRequest

common/utils/msc/msc.h

@@ -48,6 +48,7 @@ typedef enum {
   MSC_MAC_ENB,
   MSC_RLC_ENB,
   MSC_PDCP_ENB,
+  MSC_PDCP_GNB,
   MSC_RRC_ENB,
   MSC_RRC_GNB,
   MSC_IP_ENB,

openair2/RRC/NR/MESSAGES/asn1_msg.c

@@ -69,6 +69,7 @@
 #include "NR_RRCReconfigurationComplete.h"
 #include "NR_RRCReconfigurationComplete-IEs.h"
 #include "NR_DLInformationTransfer.h"
+#include "NR_RRCReestablishmentRequest.h"
 #if defined(NR_Rel16)
   #include "NR_SCS-SpecificCarrier.h"
   #include "NR_TDD-UL-DL-ConfigCommon.h"
@@ -1260,3 +1261,40 @@ uint8_t do_NR_ULInformationTransfer(uint8_t **buffer, uint32_t pdu_length, uint8
 
     return encoded;
 }
+
+uint8_t do_RRCReestablishmentRequest(uint8_t Mod_id, uint8_t *buffer) {
+  asn_enc_rval_t enc_rval;
+  NR_UL_CCCH_Message_t ul_ccch_msg;
+  NR_RRCReestablishmentRequest_t *rrcReestablishmentRequest;
+  uint8_t buf[2];
+
+  memset((void *)&ul_ccch_msg,0,sizeof(NR_UL_CCCH_Message_t));
+  ul_ccch_msg.message.present            = NR_UL_CCCH_MessageType_PR_c1;
+  ul_ccch_msg.message.choice.c1          = CALLOC(1, sizeof(struct NR_UL_CCCH_MessageType__c1));
+  ul_ccch_msg.message.choice.c1->present = NR_UL_CCCH_MessageType__c1_PR_rrcReestablishmentRequest;
+  ul_ccch_msg.message.choice.c1->choice.rrcReestablishmentRequest = CALLOC(1, sizeof(NR_RRCReestablishmentRequest_t));
+
+  rrcReestablishmentRequest = ul_ccch_msg.message.choice.c1->choice.rrcReestablishmentRequest;
+  // test
+  rrcReestablishmentRequest->rrcReestablishmentRequest.reestablishmentCause = NR_ReestablishmentCause_reconfigurationFailure;
+  rrcReestablishmentRequest->rrcReestablishmentRequest.ue_Identity.c_RNTI = 0x1234;
+  rrcReestablishmentRequest->rrcReestablishmentRequest.ue_Identity.physCellId = 0;
+  rrcReestablishmentRequest->rrcReestablishmentRequest.ue_Identity.shortMAC_I.buf = buf;
+  rrcReestablishmentRequest->rrcReestablishmentRequest.ue_Identity.shortMAC_I.buf[0] = 0x08;
+  rrcReestablishmentRequest->rrcReestablishmentRequest.ue_Identity.shortMAC_I.buf[1] = 0x32;
+  rrcReestablishmentRequest->rrcReestablishmentRequest.ue_Identity.shortMAC_I.size = 2;
+
+
+  if ( LOG_DEBUGFLAG(DEBUG_ASN1) ) {
+    xer_fprint(stdout, &asn_DEF_NR_UL_CCCH_Message, (void *)&ul_ccch_msg);
+  }
+
+  enc_rval = uper_encode_to_buffer(&asn_DEF_NR_UL_CCCH_Message,
+                                   NULL,
+                                   (void *)&ul_ccch_msg,
+                                   buffer,
+                                   100);
+  AssertFatal (enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %lu)!\n", enc_rval.failed_type->name, enc_rval.encoded);
+  LOG_D(NR_RRC,"[UE] RRCSetupRequest Encoded %zd bits (%zd bytes)\n", enc_rval.encoded, (enc_rval.encoded+7)/8);
+  return((enc_rval.encoded+7)/8);
+}

openair2/RRC/NR/MESSAGES/asn1_msg.h

@@ -145,4 +145,6 @@ do_NR_DLInformationTransfer(
 
 uint8_t do_NR_ULInformationTransfer(uint8_t **buffer, 
                         uint32_t pdu_length,
-                        uint8_t *pdu_buffer);
+                        uint8_t *pdu_buffer);
\ No newline at end of file
+
+uint8_t do_RRCReestablishmentRequest(uint8_t Mod_id, uint8_t *buffer);

openair2/RRC/NR/nr_rrc_defs.h

@@ -326,7 +326,7 @@ typedef struct gNB_RRC_UE_s {
   NR_EstablishmentCause_t            establishment_cause;
 
   /* Information from UE RRC ConnectionReestablishmentRequest */
-  NR_ReestablishmentCause_t             reestablishment_cause;
+  NR_ReestablishmentCause_t          reestablishment_cause;
 
   /* UE id for initial connection to S1AP */
   uint16_t                           ue_initial_id;
@@ -439,6 +439,7 @@ typedef struct {
   NR_SRB_INFO                               SI;
   NR_SRB_INFO                               Srb0;
   int                                       initial_csi_index[MAX_NR_RRC_UE_CONTEXTS];
+  int                                       physCellId;
 
 } rrc_gNB_carrier_data_t;
 //---------------------------------------------------

openair2/RRC/NR_UE/rrc_UE.c

@@ -2740,3 +2740,35 @@ nr_rrc_ue_process_ueCapabilityEnquiry(
     }
   }
 }
+
+//-----------------------------------------------------------------------------
+void rrc_ue_generate_RRCReestablishmentRequest( const protocol_ctxt_t *const ctxt_pP, const uint8_t gNB_index ) 
+{
+  if(NR_UE_rrc_inst[ctxt_pP->module_id].Srb0[gNB_index].Tx_buffer.payload_size ==0) {
+    NR_UE_rrc_inst[ctxt_pP->module_id].Srb0[gNB_index].Tx_buffer.payload_size =
+      do_RRCReestablishmentRequest(
+        ctxt_pP->module_id,
+        (uint8_t *)NR_UE_rrc_inst[ctxt_pP->module_id].Srb0[gNB_index].Tx_buffer.Payload);
+    LOG_I(NR_RRC,"[UE %d] : Frame %d, Logical Channel UL-CCCH (SRB0), Generating RRCReestablishmentRequest (bytes %d, gNB %d)\n",
+          ctxt_pP->module_id, ctxt_pP->frame, NR_UE_rrc_inst[ctxt_pP->module_id].Srb0[gNB_index].Tx_buffer.payload_size, gNB_index);
+
+    for (int i=0; i<NR_UE_rrc_inst[ctxt_pP->module_id].Srb0[gNB_index].Tx_buffer.payload_size; i++) {
+      LOG_T(NR_RRC,"%x.",NR_UE_rrc_inst[ctxt_pP->module_id].Srb0[gNB_index].Tx_buffer.Payload[i]);
+    }
+
+    LOG_T(NR_RRC,"\n");
+
+#ifdef ITTI_SIM
+    MessageDef *message_p;
+    uint8_t *message_buffer;
+    message_buffer = itti_malloc (TASK_RRC_NRUE,TASK_RRC_GNB_SIM,
+          NR_UE_rrc_inst[ctxt_pP->module_id].Srb0[gNB_index].Tx_buffer.payload_size);
+    memcpy (message_buffer, (uint8_t*)NR_UE_rrc_inst[ctxt_pP->module_id].Srb0[gNB_index].Tx_buffer.Payload,
+          NR_UE_rrc_inst[ctxt_pP->module_id].Srb0[gNB_index].Tx_buffer.payload_size);
+    message_p = itti_alloc_new_message (TASK_RRC_NRUE, UE_RRC_CCCH_DATA_IND);
+    GNB_RRC_CCCH_DATA_IND (message_p).sdu = message_buffer;
+    GNB_RRC_CCCH_DATA_IND (message_p).size  = NR_UE_rrc_inst[ctxt_pP->module_id].Srb0[gNB_index].Tx_buffer.payload_size;
+    itti_send_msg_to_task (TASK_RRC_GNB_SIM, ctxt_pP->instance, message_p);
+#endif
+  }
+}

openair2/SIMULATION/NR_RRC/itti_sim.c

@@ -84,7 +84,7 @@ int config_sync_var=-1;
 
 openair0_config_t openair0_cfg[MAX_CARDS];
 
-volatile int             start_gNB = 0;
+//volatile int             start_gNB = 0;
 volatile int             oai_exit = 0;
 
 //static int wait_for_sync = 0;