/* * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The OpenAirInterface Software Alliance licenses this file to You under * the OAI Public License, Version 1.1 (the "License"); you may not use this file * except in compliance with the License. * You may obtain a copy of the License at * * http://www.openairinterface.org/?page_id=698 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *------------------------------------------------------------------------------- * For more information about the OpenAirInterface (OAI) Software Alliance: * contact@openairinterface.org */ /*! \file l2_nr_interface.c * \brief layer 2 interface, used to support different RRC sublayer * \author Raymond Knopp and Navid Nikaein, WEI-TAI CHEN * \date 2010-2014, 2018 * \version 1.0 * \company Eurecom, NTUST * \email: raymond.knopp@eurecom.fr, kroempa@gmail.com */ #include <f1ap_du_rrc_message_transfer.h> #include "platform_types.h" #include "nr_rrc_defs.h" #include "nr_rrc_extern.h" #include "common/utils/LOG/log.h" #include "pdcp.h" #include "msc.h" #include "common/ran_context.h" #include "LAYER2/NR_MAC_COMMON/nr_mac_common.h" #include "LAYER2/NR_MAC_COMMON/nr_mac_extern.h" #include "intertask_interface.h" #include "NR_MIB.h" #include "NR_BCCH-BCH-Message.h" #include "rrc_gNB_UE_context.h" #include <openair2/RRC/NR/MESSAGES/asn1_msg.h> #include <openair2/F1AP/f1ap_du_rrc_message_transfer.h> extern RAN_CONTEXT_t RC; int generate_pdcch_ConfigSIB1(NR_PDCCH_ConfigSIB1_t *pdcch_ConfigSIB1, long ssbSubcarrierSpacing, long subCarrierSpacingCommon, channel_bandwidth_t min_channel_bw) { nr_ssb_and_cset_mux_pattern_type_t mux_pattern = 0; switch (ssbSubcarrierSpacing) { case NR_SubcarrierSpacing_kHz15: if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz15) { pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_1_NUM_INDEXES; mux_pattern = table_38213_13_1_c1[pdcch_ConfigSIB1->controlResourceSetZero]; } else if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz30) { pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_2_NUM_INDEXES; mux_pattern = table_38213_13_2_c1[pdcch_ConfigSIB1->controlResourceSetZero]; } else { AssertFatal(true,"Invalid subCarrierSpacingCommon\n"); } break; case NR_SubcarrierSpacing_kHz30: if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz15) { if ( (min_channel_bw == bw_5MHz) || (min_channel_bw == bw_10MHz) ) { pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_3_NUM_INDEXES; mux_pattern = table_38213_13_3_c1[pdcch_ConfigSIB1->controlResourceSetZero]; } else if (min_channel_bw == bw_40MHz) { pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_5_NUM_INDEXES; mux_pattern = table_38213_13_5_c1[pdcch_ConfigSIB1->controlResourceSetZero]; } else { AssertFatal(true,"Invalid min_bandwidth\n"); } } else if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz30) { if ( (min_channel_bw == bw_5MHz) || (min_channel_bw == bw_10MHz) ) { pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_4_NUM_INDEXES; mux_pattern = table_38213_13_4_c1[pdcch_ConfigSIB1->controlResourceSetZero]; } else if (min_channel_bw == bw_40MHz) { pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_6_NUM_INDEXES; mux_pattern = table_38213_13_6_c1[pdcch_ConfigSIB1->controlResourceSetZero]; } else { AssertFatal(true,"Invalid min_bandwidth\n"); } } else { AssertFatal(true,"Invalid subCarrierSpacingCommon\n"); } break; case NR_SubcarrierSpacing_kHz120: if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz60) { pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_7_NUM_INDEXES; mux_pattern = table_38213_13_7_c1[pdcch_ConfigSIB1->controlResourceSetZero]; } else if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz120) { pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_8_NUM_INDEXES; mux_pattern = table_38213_13_8_c1[pdcch_ConfigSIB1->controlResourceSetZero]; } else { AssertFatal(true,"Invalid subCarrierSpacingCommon\n"); } break; case NR_SubcarrierSpacing_kHz240: if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz60) { pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_9_NUM_INDEXES; mux_pattern = table_38213_13_9_c1[pdcch_ConfigSIB1->controlResourceSetZero]; } else if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz120) { pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_10_NUM_INDEXES; mux_pattern = table_38213_13_10_c1[pdcch_ConfigSIB1->controlResourceSetZero]; } else { AssertFatal(true,"Invalid subCarrierSpacingCommon\n"); } break; default: AssertFatal(true,"Invalid ssbSubcarrierSpacing\n"); break; } frequency_range_t frequency_range = FR1; if(ssbSubcarrierSpacing>=60) { frequency_range = FR2; } pdcch_ConfigSIB1->searchSpaceZero = 0; if(mux_pattern == NR_SSB_AND_CSET_MUX_PATTERN_TYPE1 && frequency_range == FR1){ pdcch_ConfigSIB1->searchSpaceZero = rand() % TABLE_38213_13_11_NUM_INDEXES; } if(mux_pattern == NR_SSB_AND_CSET_MUX_PATTERN_TYPE1 && frequency_range == FR2){ pdcch_ConfigSIB1->searchSpaceZero = rand() % TABLE_38213_13_12_NUM_INDEXES; } return 0; } int nr_rrc_mac_remove_ue(module_id_t mod_idP, rnti_t rntiP){ // todo return 0; } //------------------------------------------------------------------------------ uint8_t nr_rrc_data_req( const protocol_ctxt_t *const ctxt_pP, const rb_id_t rb_idP, const mui_t muiP, const confirm_t confirmP, const sdu_size_t sdu_sizeP, uint8_t *const buffer_pP, const pdcp_transmission_mode_t modeP ) //------------------------------------------------------------------------------ { if(sdu_sizeP == 255) { LOG_D(RRC,"sdu_sizeP == 255"); return FALSE; } MSC_LOG_TX_MESSAGE( ctxt_pP->enb_flag ? MSC_RRC_GNB : MSC_RRC_UE, ctxt_pP->enb_flag ? MSC_PDCP_ENB : MSC_PDCP_UE, buffer_pP, sdu_sizeP, MSC_AS_TIME_FMT"RRC_DCCH_DATA_REQ UE %x MUI %d size %u", MSC_AS_TIME_ARGS(ctxt_pP), ctxt_pP->rnti, muiP, sdu_sizeP); MessageDef *message_p; // Uses a new buffer to avoid issue with PDCP buffer content that could be changed by PDCP (asynchronous message handling). uint8_t *message_buffer; message_buffer = itti_malloc ( ctxt_pP->enb_flag ? TASK_RRC_GNB : TASK_RRC_UE, ctxt_pP->enb_flag ? TASK_PDCP_ENB : TASK_PDCP_UE, sdu_sizeP); memcpy (message_buffer, buffer_pP, sdu_sizeP); message_p = itti_alloc_new_message (ctxt_pP->enb_flag ? TASK_RRC_GNB : TASK_RRC_UE, 0, RRC_DCCH_DATA_REQ); RRC_DCCH_DATA_REQ (message_p).frame = ctxt_pP->frame; RRC_DCCH_DATA_REQ (message_p).enb_flag = ctxt_pP->enb_flag; RRC_DCCH_DATA_REQ (message_p).rb_id = rb_idP; RRC_DCCH_DATA_REQ (message_p).muip = muiP; RRC_DCCH_DATA_REQ (message_p).confirmp = confirmP; RRC_DCCH_DATA_REQ (message_p).sdu_size = sdu_sizeP; RRC_DCCH_DATA_REQ (message_p).sdu_p = message_buffer; //memcpy (NR_RRC_DCCH_DATA_REQ (message_p).sdu_p, buffer_pP, sdu_sizeP); RRC_DCCH_DATA_REQ (message_p).mode = modeP; RRC_DCCH_DATA_REQ (message_p).module_id = ctxt_pP->module_id; RRC_DCCH_DATA_REQ (message_p).rnti = ctxt_pP->rnti; RRC_DCCH_DATA_REQ (message_p).eNB_index = ctxt_pP->eNB_index; itti_send_msg_to_task ( ctxt_pP->enb_flag ? TASK_PDCP_ENB : TASK_PDCP_UE, ctxt_pP->instance, message_p); LOG_I(NR_RRC,"send RRC_DCCH_DATA_REQ to PDCP\n"); /* Hack: only trigger PDCP if in CU, otherwise it is triggered by RU threads * Ideally, PDCP would not neet to be triggered like this but react to ITTI * messages automatically */ if (ctxt_pP->enb_flag && NODE_IS_CU(RC.nrrrc[ctxt_pP->module_id]->node_type)) pdcp_run(ctxt_pP); return TRUE; // TODO should be changed to a CNF message later, currently RRC lite does not used the returned value anyway. } int8_t mac_rrc_nr_data_req(const module_id_t Mod_idP, const int CC_id, const frame_t frameP, const rb_id_t Srb_id, const rnti_t rnti, const uint8_t Nb_tb, uint8_t *const buffer_pP ){ #ifdef DEBUG_RRC LOG_D(RRC,"[eNB %d] mac_rrc_data_req to SRB ID=%ld\n",Mod_idP,Srb_id); #endif // MIBCH if ((Srb_id & RAB_OFFSET) == MIBCH) { asn_enc_rval_t enc_rval; uint8_t sfn_msb = (uint8_t)((frameP>>4)&0x3f); rrc_gNB_carrier_data_t *carrier = &RC.nrrrc[Mod_idP]->carrier; NR_BCCH_BCH_Message_t *mib = &carrier->mib; // Currently we are getting the pdcch_ConfigSIB1 from the configuration file. // Uncomment this function for a dynamic pdcch_ConfigSIB1. //channel_bandwidth_t min_channel_bw = bw_10MHz; // Must be obtained based on TS 38.101-1 Table 5.3.5-1 //generate_pdcch_ConfigSIB1(carrier->pdcch_ConfigSIB1, // *carrier->servingcellconfigcommon->ssbSubcarrierSpacing, // carrier->mib.message.choice.mib->subCarrierSpacingCommon, // min_channel_bw); mib->message.choice.mib->pdcch_ConfigSIB1.controlResourceSetZero = carrier->pdcch_ConfigSIB1->controlResourceSetZero; mib->message.choice.mib->pdcch_ConfigSIB1.searchSpaceZero = carrier->pdcch_ConfigSIB1->searchSpaceZero; mib->message.choice.mib->systemFrameNumber.buf[0] = sfn_msb << 2; enc_rval = uper_encode_to_buffer(&asn_DEF_NR_BCCH_BCH_Message, NULL, (void *) mib, carrier->MIB, 24); LOG_D(NR_RRC, "Encoded MIB for frame %d sfn_msb %d (%p), bits %lu\n", frameP, sfn_msb, carrier->MIB, enc_rval.encoded); buffer_pP[0] = carrier->MIB[0]; buffer_pP[1] = carrier->MIB[1]; buffer_pP[2] = carrier->MIB[2]; LOG_D(NR_RRC, "MIB PDU buffer_pP[0]=%x , buffer_pP[1]=%x, buffer_pP[2]=%x\n", buffer_pP[0], buffer_pP[1], buffer_pP[2]); AssertFatal (enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %lu)!\n", enc_rval.failed_type->name, enc_rval.encoded); return (3); } // TODO BCCH SIB1 SIBs if ((Srb_id & RAB_OFFSET ) == BCCH) { memcpy(&buffer_pP[0], RC.nrrrc[Mod_idP]->carrier.SIB1, RC.nrrrc[Mod_idP]->carrier.sizeof_SIB1); return RC.nrrrc[Mod_idP]->carrier.sizeof_SIB1; } // CCCH if( (Srb_id & RAB_OFFSET ) == CCCH) { char *payload_pP; uint8_t Sdu_size = 0; struct rrc_gNB_ue_context_s *ue_context_p = rrc_gNB_get_ue_context(RC.nrrrc[Mod_idP], rnti); LOG_D(NR_RRC,"[gNB %d] Frame %d CCCH request (Srb_id %ld)\n", Mod_idP, frameP, Srb_id); AssertFatal(ue_context_p!=NULL,"failed to get ue_context, rnti %x\n",rnti); char payload_size = ue_context_p->ue_context.Srb0.Tx_buffer.payload_size; // check if data is there for MAC if (payload_size > 0) { payload_pP = ue_context_p->ue_context.Srb0.Tx_buffer.Payload; LOG_D(NR_RRC,"[gNB %d] CCCH has %d bytes (dest: %p, src %p)\n", Mod_idP, payload_size, buffer_pP, payload_pP); // Fill buffer memcpy((void *)buffer_pP, (void*)payload_pP, payload_size); Sdu_size = payload_size; ue_context_p->ue_context.Srb0.Tx_buffer.payload_size = 0; } return Sdu_size; } return(0); } int8_t nr_mac_rrc_data_ind(const module_id_t module_idP, const int CC_id, const frame_t frameP, const sub_frame_t sub_frameP, const int UE_id, const rnti_t rntiP, const rb_id_t srb_idP, const uint8_t *sduP, const sdu_size_t sdu_lenP, const boolean_t brOption) { if (NODE_IS_DU(RC.nrrrc[module_idP]->node_type)) { LOG_W(RRC,"[DU %d][RAPROC] Received SDU for CCCH on SRB %ld length %d for UE id %d RNTI %x \n", module_idP, srb_idP, sdu_lenP, UE_id, rntiP); // Generate DUtoCURRCContainer // call do_RRCSetup like full procedure and extract masterCellGroup NR_CellGroupConfig_t cellGroupConfig; NR_ServingCellConfigCommon_t *scc=RC.nrrrc[module_idP]->carrier.servingcellconfigcommon; uint8_t sdu2[100]; memset(&cellGroupConfig,0,sizeof(cellGroupConfig)); fill_initial_cellGroupConfig(rntiP,-1,&cellGroupConfig,scc,&RC.nrrrc[module_idP]->carrier); asn_enc_rval_t enc_rval = uper_encode_to_buffer(&asn_DEF_NR_CellGroupConfig, NULL, (void *)&cellGroupConfig, sdu2, 100); int sdu2_len = (enc_rval.encoded+7)/8; if (enc_rval.encoded == -1) { LOG_E(F1AP,"Could not encoded cellGroupConfig, failed element %s\n",enc_rval.failed_type->name); exit(-1); } /* do ITTI message */ DU_send_INITIAL_UL_RRC_MESSAGE_TRANSFER( module_idP, CC_id, UE_id, rntiP, sduP, sdu_lenP, (const int8_t*)sdu2, sdu2_len ); return(0); } protocol_ctxt_t ctxt; PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, GNB_FLAG_YES, rntiP, frameP, sub_frameP,0); if((srb_idP & RAB_OFFSET) == CCCH) { LOG_D(NR_RRC, "[gNB %d] Received SDU for CCCH on SRB %ld\n", module_idP, srb_idP); ctxt.brOption = brOption; if (sdu_lenP > 0) { nr_rrc_gNB_decode_ccch(&ctxt, sduP, sdu_lenP, NULL, CC_id); } } return 0; } void nr_mac_gNB_rrc_ul_failure(const module_id_t Mod_instP, const int CC_idP, const frame_t frameP, const sub_frame_t subframeP, const rnti_t rntiP) { struct rrc_gNB_ue_context_s *ue_context_p = NULL; ue_context_p = rrc_gNB_get_ue_context( RC.nrrrc[Mod_instP], rntiP); if (ue_context_p != NULL) { LOG_D(RRC,"Frame %d, Subframe %d: UE %x UL failure, activating timer\n",frameP,subframeP,rntiP); if(ue_context_p->ue_context.ul_failure_timer == 0) ue_context_p->ue_context.ul_failure_timer=1; } else { LOG_D(RRC,"Frame %d, Subframe %d: UL failure: UE %x unknown \n",frameP,subframeP,rntiP); } } void nr_mac_gNB_rrc_ul_failure_reset(const module_id_t Mod_instP, const frame_t frameP, const sub_frame_t subframeP, const rnti_t rntiP) { struct rrc_gNB_ue_context_s *ue_context_p = NULL; ue_context_p = rrc_gNB_get_ue_context(RC.nrrrc[Mod_instP], rntiP); if (ue_context_p != NULL) { LOG_W(RRC,"Frame %d, Subframe %d: UE %x UL failure reset, deactivating timer\n",frameP,subframeP,rntiP); ue_context_p->ue_context.ul_failure_timer=0; } else { LOG_W(RRC,"Frame %d, Subframe %d: UL failure reset: UE %x unknown \n",frameP,subframeP,rntiP); } }