From 7fa06a3a2b35f28fc170852d273df1377159a04c Mon Sep 17 00:00:00 2001 From: yaojie Date: Fri, 11 Dec 2020 17:31:06 +0900 Subject: [PATCH] Add RRCReestablishment --- openair2/RRC/NR/MESSAGES/asn1_msg.c | 131 ++++++++++++++++++++++++++++ openair2/RRC/NR/MESSAGES/asn1_msg.h | 12 +++ openair2/RRC/NR/nr_rrc_defs.h | 1 + openair2/RRC/NR/rrc_gNB.c | 74 +++++++++++++++- 4 files changed, 217 insertions(+), 1 deletion(-) diff --git a/openair2/RRC/NR/MESSAGES/asn1_msg.c b/openair2/RRC/NR/MESSAGES/asn1_msg.c index 6744e154d0..4a1c24754e 100644 --- a/openair2/RRC/NR/MESSAGES/asn1_msg.c +++ b/openair2/RRC/NR/MESSAGES/asn1_msg.c @@ -1298,3 +1298,134 @@ uint8_t do_RRCReestablishmentRequest(uint8_t Mod_id, uint8_t *buffer) { 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); } + +//------------------------------------------------------------------------------ +uint8_t +do_RRCReestablishment( +const protocol_ctxt_t *const ctxt_pP, +rrc_gNB_ue_context_t *const ue_context_pP, +int CC_id, +uint8_t *const buffer, +//const uint8_t transmission_mode, +const uint8_t Transaction_id +//NR_SRB_ToAddModList_t **SRB_configList, +//struct LTE_PhysicalConfigDedicated **physicalConfigDedicated +) { + asn_enc_rval_t enc_rval; + //long *logicalchannelgroup = NULL; + //struct NR_SRB_ToAddMod *SRB1_config = NULL; + //struct NR_SRB_ToAddMod *SRB2_config = NULL; + //gNB_RRC_INST *nrrrc = RC.nrrrc[ctxt_pP->module_id]; + //LTE_PhysicalConfigDedicated_t *physicalConfigDedicated2 = NULL; + NR_DL_DCCH_Message_t dl_dcch_msg; + NR_RRCReestablishment_t *rrcReestablishment = NULL; + //int i = 0; + ue_context_pP->ue_context.reestablishment_xid = Transaction_id; + NR_SRB_ToAddModList_t **SRB_configList2 = NULL; + SRB_configList2 = &ue_context_pP->ue_context.SRB_configList2[Transaction_id]; + + if (*SRB_configList2) { + free(*SRB_configList2); + } + + *SRB_configList2 = CALLOC(1, sizeof(NR_SRB_ToAddModList_t)); + memset((void *)&dl_dcch_msg, 0, sizeof(NR_DL_DCCH_Message_t)); + dl_dcch_msg.message.present = NR_DL_DCCH_MessageType_PR_c1; + dl_dcch_msg.message.choice.c1->present = NR_DL_DCCH_MessageType__c1_PR_rrcReestablishment; + rrcReestablishment = dl_dcch_msg.message.choice.c1->choice.rrcReestablishment; + rrcReestablishment = CALLOC(1,sizeof(NR_RRCReestablishment_t)); + /* + // RRCReestablishment + // Configure SRB1 + + // get old configuration of SRB2 + if (*SRB_configList != NULL) { + for (i = 0; (i < (*SRB_configList)->list.count) && (i < 3); i++) { + LOG_D(NR_RRC, "(*SRB_configList)->list.array[%d]->srb_Identity=%ld\n", + i, (*SRB_configList)->list.array[i]->srb_Identity); + + if ((*SRB_configList)->list.array[i]->srb_Identity == 2 ) { + SRB2_config = (*SRB_configList)->list.array[i]; + } else if ((*SRB_configList)->list.array[i]->srb_Identity == 1 ) { + SRB1_config = (*SRB_configList)->list.array[i]; + } + } + } + + if (SRB1_config == NULL) { + // default SRB1 configuration + LOG_W(NR_RRC,"SRB1 configuration does not exist in SRB configuration list, use default\n"); + /// SRB1 + SRB1_config = CALLOC(1, sizeof(*SRB1_config)); + SRB1_config->srb_Identity = 1; + } + + if (SRB2_config == NULL) { + LOG_W(NR_RRC,"SRB2 configuration does not exist in SRB configuration list\n"); + } else { + ASN_SEQUENCE_ADD(&(*SRB_configList2)->list, SRB2_config); + } + + if (*SRB_configList) { + free(*SRB_configList); + } + + *SRB_configList = CALLOC(1, sizeof(LTE_SRB_ToAddModList_t)); + ASN_SEQUENCE_ADD(&(*SRB_configList)->list,SRB1_config); + */ + rrcReestablishment->rrc_TransactionIdentifier = Transaction_id; + rrcReestablishment->criticalExtensions.present = NR_RRCReestablishment__criticalExtensions_PR_rrcReestablishment; + rrcReestablishment->criticalExtensions.choice.rrcReestablishment = CALLOC(1,sizeof(NR_RRCReestablishment_IEs_t)); + + uint8_t KgNB_star[32] = { 0 }; + /** TODO + uint16_t pci = nrrrc->carrier[CC_id].physCellId; + uint32_t earfcn_dl = (uint32_t)freq_to_arfcn10(RC.mac[ctxt_pP->module_id]->common_channels[CC_id].eutra_band, + nrrrc->carrier[CC_id].dl_CarrierFreq); + bool is_rel8_only = true; + + if (earfcn_dl > 65535) { + is_rel8_only = false; + } + LOG_D(NR_RRC, "pci=%d, eutra_band=%d, downlink_frequency=%d, earfcn_dl=%u, is_rel8_only=%s\n", + pci, + RC.mac[ctxt_pP->module_id]->common_channels[CC_id].eutra_band, + nrrrc->carrier[CC_id].dl_CarrierFreq, + earfcn_dl, + is_rel8_only == true ? "true": "false"); + */ + + if (ue_context_pP->ue_context.nh_ncc >= 0) { + //TODO derive_keNB_star(ue_context_pP->ue_context.nh, pci, earfcn_dl, is_rel8_only, KgNB_star); + rrcReestablishment->criticalExtensions.choice.rrcReestablishment->nextHopChainingCount = ue_context_pP->ue_context.nh_ncc; + } else { // first HO + //TODO derive_keNB_star (ue_context_pP->ue_context.kgnb, pci, earfcn_dl, is_rel8_only, KgNB_star); + // LG: really 1 + rrcReestablishment->criticalExtensions.choice.rrcReestablishment->nextHopChainingCount = 0; + } + // copy KgNB_star to ue_context_pP->ue_context.kgnb + memcpy (ue_context_pP->ue_context.kgnb, KgNB_star, 32); + ue_context_pP->ue_context.kgnb_ncc = 0; + rrcReestablishment->criticalExtensions.choice.rrcReestablishment->nonCriticalExtension = NULL; + + if ( LOG_DEBUGFLAG(DEBUG_ASN1) ) { + xer_fprint(stdout, &asn_DEF_NR_DL_DCCH_Message, (void *)&dl_dcch_msg); + } + + enc_rval = uper_encode_to_buffer(&asn_DEF_NR_DL_DCCH_Message, + NULL, + (void *)&dl_dcch_msg, + buffer, + 100); + + if(enc_rval.encoded == -1) { + LOG_E(NR_RRC, "[gNB AssertFatal]ASN1 message encoding failed (%s, %lu)!\n", + enc_rval.failed_type->name, enc_rval.encoded); + return -1; + } + + LOG_D(NR_RRC,"RRCReestablishment Encoded %u bits (%u bytes)\n", + (uint32_t)enc_rval.encoded, (uint32_t)(enc_rval.encoded+7)/8); + return((enc_rval.encoded+7)/8); + +} diff --git a/openair2/RRC/NR/MESSAGES/asn1_msg.h b/openair2/RRC/NR/MESSAGES/asn1_msg.h index 3affb1858c..f0a6a2da96 100644 --- a/openair2/RRC/NR/MESSAGES/asn1_msg.h +++ b/openair2/RRC/NR/MESSAGES/asn1_msg.h @@ -148,3 +148,15 @@ uint8_t do_NR_ULInformationTransfer(uint8_t **buffer, uint8_t *pdu_buffer); uint8_t do_RRCReestablishmentRequest(uint8_t Mod_id, uint8_t *buffer); + +uint8_t +do_RRCReestablishment( + const protocol_ctxt_t *const ctxt_pP, + rrc_gNB_ue_context_t *const ue_context_pP, + int CC_id, + uint8_t *const buffer, + //const uint8_t transmission_mode, + const uint8_t Transaction_id + //NR_SRB_ToAddModList_t **SRB_configList, + //struct LTE_PhysicalConfigDedicated **physicalConfigDedicated +); diff --git a/openair2/RRC/NR/nr_rrc_defs.h b/openair2/RRC/NR/nr_rrc_defs.h index 7c9763eed4..269d0aa0e7 100644 --- a/openair2/RRC/NR/nr_rrc_defs.h +++ b/openair2/RRC/NR/nr_rrc_defs.h @@ -440,6 +440,7 @@ typedef struct { NR_SRB_INFO Srb0; int initial_csi_index[MAX_NR_RRC_UE_CONTEXTS]; int physCellId; + int p_gNB; } rrc_gNB_carrier_data_t; //--------------------------------------------------- diff --git a/openair2/RRC/NR/rrc_gNB.c b/openair2/RRC/NR/rrc_gNB.c index 270b3284da..29181c25a3 100644 --- a/openair2/RRC/NR/rrc_gNB.c +++ b/openair2/RRC/NR/rrc_gNB.c @@ -910,6 +910,78 @@ rrc_gNB_process_RRCReconfigurationComplete( } } +//----------------------------------------------------------------------------- +void +rrc_gNB_generate_RRCReestablishment( + const protocol_ctxt_t *const ctxt_pP, + rrc_gNB_ue_context_t *const ue_context_pP, + const int CC_id) +//----------------------------------------------------------------------------- +{ + int UE_id = -1; + //NR_LogicalChannelConfig_t *SRB1_logicalChannelConfig = NULL; + NR_SRB_ToAddModList_t **SRB_configList; + //NR_SRB_ToAddMod_t *SRB1_config = NULL; + //rrc_gNB_carrier_data_t *carrier = NULL; + gNB_RRC_UE_t *ue_context = NULL; + module_id_t module_id = ctxt_pP->module_id; + uint16_t rnti = ctxt_pP->rnti; + + SRB_configList = &(ue_context_pP->ue_context.SRB_configList); + //carrier = &(RC.nrrrc[ctxt_pP->module_id]->carrier); + ue_context = &(ue_context_pP->ue_context); + ue_context->Srb0.Tx_buffer.payload_size = do_RRCReestablishment(ctxt_pP, + ue_context_pP, + CC_id, + (uint8_t *) ue_context->Srb0.Tx_buffer.Payload, + //(uint8_t) carrier->p_gNB, // at this point we do not have the UE capability information, so it can only be TM1 or TM2 + rrc_gNB_get_next_transaction_identifier(module_id) + //SRB_configList, + //&(ue_context->physicalConfigDedicated) + ); + + /* Configure SRB1 for UE */ + if (*SRB_configList != NULL) { + //TODO + } // if (*SRB_configList != NULL) + + MSC_LOG_TX_MESSAGE(MSC_RRC_GNB, + MSC_RRC_UE, + ue_context->Srb0.Tx_buffer.Header, + ue_context->Srb0.Tx_buffer.payload_size, + MSC_AS_TIME_FMT" NR_RRCReestablishment UE %x size %u", + MSC_AS_TIME_ARGS(ctxt_pP), + ue_context->rnti, + ue_context->Srb0.Tx_buffer.payload_size); + LOG_I(NR_RRC, PROTOCOL_NR_RRC_CTXT_UE_FMT" [RAPROC] Logical Channel DL-DCCH, Generating NR_RRCReestablishment (bytes %d)\n", + PROTOCOL_NR_RRC_CTXT_UE_ARGS(ctxt_pP), + ue_context->Srb0.Tx_buffer.payload_size); + UE_id = find_UE_id(module_id, rnti); + + if (UE_id != -1) { + /* Activate reject timer, if RRCComplete not received after 10 frames, reject UE */ + RC.mac[module_id]->UE_info.UE_sched_ctrl[UE_id].ue_reestablishment_reject_timer = 1; + /* Reject UE after 10 frames, LTE_RRCConnectionReestablishmentReject is triggered */ + RC.mac[module_id]->UE_info.UE_sched_ctrl[UE_id].ue_reestablishment_reject_timer_thres = 100; + } else { + LOG_E(NR_RRC, PROTOCOL_NR_RRC_CTXT_UE_FMT" Generating NR_RRCReestablishment without UE_id(MAC) rnti %x\n", + PROTOCOL_NR_RRC_CTXT_UE_ARGS(ctxt_pP), + rnti); + } +#ifdef ITTI_SIM + MessageDef *message_p; + uint8_t *message_buffer; + message_buffer = itti_malloc (TASK_RRC_GNB, TASK_RRC_UE_SIM, ue_context->Srb0.Tx_buffer.payload_size); + memcpy (message_buffer, (uint8_t *) ue_context->Srb0.Tx_buffer.Payload, ue_context->Srb0.Tx_buffer.payload_size); + message_p = itti_alloc_new_message (TASK_RRC_GNB, GNB_RRC_DCCH_DATA_IND); + GNB_RRC_DCCH_DATA_IND (message_p).rbid = DCCH; + GNB_RRC_DCCH_DATA_IND (message_p).sdu = message_buffer; + GNB_RRC_DCCH_DATA_IND (message_p).size = ue_context->Srb0.Tx_buffer.payload_size; + itti_send_msg_to_task (TASK_RRC_UE_SIM, ctxt_pP->instance, message_p); +#endif + +} + //----------------------------------------------------------------------------- void rrc_gNB_process_RRCConnectionReestablishmentComplete( @@ -1507,7 +1579,7 @@ int nr_rrc_gNB_decode_ccch(protocol_ctxt_t *const ctxt_pP, memcpy(&ue_context_p->ue_context.Srb2.Srb_info.Lchan_desc[1], &DCCH_LCHAN_DESC, LCHAN_DESC_SIZE); - // rrc_gNB_generate_RRCConnectionReestablishment(ctxt_pP, ue_context_p, CC_id); + rrc_gNB_generate_RRCReestablishment(ctxt_pP, ue_context_p, CC_id); LOG_I(NR_RRC, PROTOCOL_NR_RRC_CTXT_UE_FMT"CALLING RLC CONFIG SRB1 (rbid %d)\n", PROTOCOL_NR_RRC_CTXT_UE_ARGS(ctxt_pP), Idx);