/* * 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 NR_IF_Module.c * \brief functions for NR UE FAPI-like interface * \author R. Knopp, K.H. HSU * \date 2018 * \version 0.1 * \company Eurecom / NTUST * \email: knopp@eurecom.fr, kai-hsiang.hsu@eurecom.fr * \note * \warning */ #include "PHY/defs_nr_UE.h" #include "NR_IF_Module.h" #include "NR_MAC_UE/mac_proto.h" #include "assertions.h" #include "NR_MAC_UE/mac_extern.h" #include "SCHED_NR_UE/fapi_nr_ue_l1.h" #include "executables/softmodem-common.h" #include <stdio.h> #define MAX_IF_MODULES 100 const char *dl_indication_type[] = {"MIB", "SIB", "DLSCH", "DCI", "RAR"}; static nr_ue_if_module_t *nr_ue_if_module_inst[MAX_IF_MODULES]; // L2 Abstraction Layer int handle_bcch_bch(module_id_t module_id, int cc_id, unsigned int gNB_index, uint8_t *pduP, unsigned int additional_bits, uint32_t ssb_index, uint32_t ssb_length, uint16_t ssb_start_subcarrier, uint16_t cell_id){ return nr_ue_decode_mib(module_id, cc_id, gNB_index, additional_bits, ssb_length, // Lssb = 64 is not support ssb_index, pduP, ssb_start_subcarrier, cell_id); } // L2 Abstraction Layer int handle_bcch_dlsch(module_id_t module_id, int cc_id, unsigned int gNB_index, uint32_t sibs_mask, uint8_t *pduP, uint32_t pdu_len){ return nr_ue_decode_BCCH_DL_SCH(module_id, cc_id, gNB_index, sibs_mask, pduP, pdu_len); } // L2 Abstraction Layer int handle_dci(module_id_t module_id, int cc_id, unsigned int gNB_index, frame_t frame, int slot, fapi_nr_dci_indication_pdu_t *dci){ return nr_ue_process_dci_indication_pdu(module_id, cc_id, gNB_index, frame, slot, dci); } // L2 Abstraction Layer // Note: sdu should always be processed because data and timing advance updates are transmitted by the UE int8_t handle_dlsch (nr_downlink_indication_t *dl_info, NR_UL_TIME_ALIGNMENT_t *ul_time_alignment, int pdu_id){ nr_ue_send_sdu(dl_info, ul_time_alignment, pdu_id); return 0; } int nr_ue_ul_indication(nr_uplink_indication_t *ul_info){ NR_UE_L2_STATE_t ret; module_id_t module_id = ul_info->module_id; NR_UE_MAC_INST_t *mac = get_mac_inst(module_id); ret = nr_ue_scheduler(NULL, ul_info); NR_TDD_UL_DL_ConfigCommon_t *tdd_UL_DL_ConfigurationCommon = mac->scc != NULL ? mac->scc->tdd_UL_DL_ConfigurationCommon : mac->scc_SIB->tdd_UL_DL_ConfigurationCommon; if (is_nr_UL_slot(tdd_UL_DL_ConfigurationCommon, ul_info->slot_tx, mac->frame_type) && !get_softmodem_params()->phy_test) nr_ue_prach_scheduler(module_id, ul_info->frame_tx, ul_info->slot_tx, ul_info->thread_id); switch(ret){ case UE_CONNECTION_OK: break; case UE_CONNECTION_LOST: break; case UE_PHY_RESYNCH: break; case UE_PHY_HO_PRACH: break; default: break; } return 0; } int nr_ue_dl_indication(nr_downlink_indication_t *dl_info, NR_UL_TIME_ALIGNMENT_t *ul_time_alignment){ int32_t i; uint32_t ret_mask = 0x0; module_id_t module_id = dl_info->module_id; NR_UE_MAC_INST_t *mac = get_mac_inst(module_id); fapi_nr_dl_config_request_t *dl_config = &mac->dl_config_request; if (!dl_info->dci_ind && !dl_info->rx_ind) { // UL indication to schedule DCI reception nr_ue_scheduler(dl_info, NULL); } else { // UL indication after reception of DCI or DL PDU if(dl_info->dci_ind != NULL){ LOG_D(MAC,"[L2][IF MODULE][DL INDICATION][DCI_IND]\n"); for(i=0; i<dl_info->dci_ind->number_of_dcis; ++i){ LOG_D(MAC,">>>NR_IF_Module i=%d, dl_info->dci_ind->number_of_dcis=%d\n",i,dl_info->dci_ind->number_of_dcis); nr_scheduled_response_t scheduled_response; int8_t ret = handle_dci(dl_info->module_id, dl_info->cc_id, dl_info->gNB_index, dl_info->frame, dl_info->slot, dl_info->dci_ind->dci_list+i); ret_mask |= (ret << FAPI_NR_DCI_IND); if (ret >= 0) { AssertFatal( nr_ue_if_module_inst[module_id] != NULL, "IF module is NULL!\n" ); AssertFatal( nr_ue_if_module_inst[module_id]->scheduled_response != NULL, "scheduled_response is NULL!\n" ); fill_scheduled_response(&scheduled_response, dl_config, NULL, NULL, dl_info->module_id, dl_info->cc_id, dl_info->frame, dl_info->slot, dl_info->thread_id); nr_ue_if_module_inst[module_id]->scheduled_response(&scheduled_response); } } } if(dl_info->rx_ind != NULL){ for(i=0; i<dl_info->rx_ind->number_pdus; ++i){ LOG_D(MAC, "In %s sending DL indication to MAC. 1 PDU type %s of %d total number of PDUs \n", __FUNCTION__, dl_indication_type[dl_info->rx_ind->rx_indication_body[i].pdu_type - 1], dl_info->rx_ind->number_pdus); switch(dl_info->rx_ind->rx_indication_body[i].pdu_type){ case FAPI_NR_RX_PDU_TYPE_SSB: ret_mask |= (handle_bcch_bch(dl_info->module_id, dl_info->cc_id, dl_info->gNB_index, (dl_info->rx_ind->rx_indication_body+i)->ssb_pdu.pdu, (dl_info->rx_ind->rx_indication_body+i)->ssb_pdu.additional_bits, (dl_info->rx_ind->rx_indication_body+i)->ssb_pdu.ssb_index, (dl_info->rx_ind->rx_indication_body+i)->ssb_pdu.ssb_length, (dl_info->rx_ind->rx_indication_body+i)->ssb_pdu.ssb_start_subcarrier, (dl_info->rx_ind->rx_indication_body+i)->ssb_pdu.cell_id)) << FAPI_NR_RX_PDU_TYPE_SSB; break; case FAPI_NR_RX_PDU_TYPE_SIB: ret_mask |= (handle_bcch_dlsch(dl_info->module_id, dl_info->cc_id, dl_info->gNB_index, (dl_info->rx_ind->rx_indication_body+i)->sib_pdu.sibs_mask, (dl_info->rx_ind->rx_indication_body+i)->sib_pdu.pdu, (dl_info->rx_ind->rx_indication_body+i)->sib_pdu.pdu_length)) << FAPI_NR_RX_PDU_TYPE_SIB; break; case FAPI_NR_RX_PDU_TYPE_DLSCH: ret_mask |= (handle_dlsch(dl_info, ul_time_alignment, i)) << FAPI_NR_RX_PDU_TYPE_DLSCH; break; case FAPI_NR_RX_PDU_TYPE_RAR: ret_mask |= (handle_dlsch(dl_info, ul_time_alignment, i)) << FAPI_NR_RX_PDU_TYPE_RAR; break; default: break; } } } //clean up nr_downlink_indication_t *dl_info dl_info->rx_ind = NULL; dl_info->dci_ind = NULL; } return 0; } nr_ue_if_module_t *nr_ue_if_module_init(uint32_t module_id){ if (nr_ue_if_module_inst[module_id] == NULL) { nr_ue_if_module_inst[module_id] = (nr_ue_if_module_t *)malloc(sizeof(nr_ue_if_module_t)); memset((void*)nr_ue_if_module_inst[module_id],0,sizeof(nr_ue_if_module_t)); nr_ue_if_module_inst[module_id]->cc_mask=0; nr_ue_if_module_inst[module_id]->current_frame = 0; nr_ue_if_module_inst[module_id]->current_slot = 0; nr_ue_if_module_inst[module_id]->phy_config_request = nr_ue_phy_config_request; nr_ue_if_module_inst[module_id]->scheduled_response = nr_ue_scheduled_response; nr_ue_if_module_inst[module_id]->dl_indication = nr_ue_dl_indication; nr_ue_if_module_inst[module_id]->ul_indication = nr_ue_ul_indication; } return nr_ue_if_module_inst[module_id]; } int nr_ue_if_module_kill(uint32_t module_id) { if (nr_ue_if_module_inst[module_id] != NULL){ free(nr_ue_if_module_inst[module_id]); } return 0; } int nr_ue_dcireq(nr_dcireq_t *dcireq) { fapi_nr_dl_config_request_t *dl_config = &dcireq->dl_config_req; NR_UE_MAC_INST_t *UE_mac = get_mac_inst(0); dl_config->sfn = UE_mac->dl_config_request.sfn; dl_config->slot = UE_mac->dl_config_request.slot; LOG_D(PHY, "Entering UE DCI configuration frame %d slot %d \n", dcireq->frame, dcireq->slot); ue_dci_configuration(UE_mac, dl_config, dcireq->frame, dcireq->slot); return 0; }