/* * 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 PHY/NR_TRANSPORT/nr_dci_tools.c * \brief * \author * \date 2018 * \version 0.1 * \company Eurecom * \email: * \note * \warning */ #include "nr_dci.h" //#define DEBUG_FILL_DCI #include "nr_dlsch.h" /* Original version to keep code for Y that needs to be moved to MAC void nr_fill_cce_list(PHY_VARS_gNB *gNB, uint16_t n_shift, uint8_t m) { nr_cce_t* cce; nr_reg_t* reg; nfapi_nr_dl_config_pdcch_pdu_rel15_t* pdcch_pdu = gNB->pdcch_pdu.pdcch; uint8_t L = dci_alloc->L; uint8_t bsize = pdcch_params->reg_bundle_size; uint8_t R = pdcch_params->interleaver_size; uint16_t N_reg = pdcch_params->n_rb * pdcch_params->n_symb; uint16_t Y, N_cce, M_s_max, n_CI=0, tmp, C=0; uint16_t n_RNTI = (pdcch_params->search_space_type == NFAPI_NR_SEARCH_SPACE_TYPE_UE_SPECIFIC)? pdcch_params->rnti:0; uint32_t A[3]={39827,39829,39839}; if (pdcch_params->config_type == NFAPI_NR_CSET_CONFIG_MIB_SIB1) AssertFatal(L>=4, "Invalid aggregation level for SIB1 configured PDCCH %d\n", L); N_cce = N_reg / NR_NB_REG_PER_CCE; //Max number of candidates per aggregation level -- SIB1 configured search space only M_s_max = (L==4)?4:(L==8)?2:1; if (pdcch_params->search_space_type == NFAPI_NR_SEARCH_SPACE_TYPE_COMMON) Y = 0; else { //NFAPI_NR_SEARCH_SPACE_TYPE_UE_SPECIFIC Y = (A[0]*n_RNTI)%65537; // Candidate 0, antenna port 0 } if (pdcch_params->cr_mapping_type == NFAPI_NR_CCE_REG_MAPPING_INTERLEAVED) { uint16_t assertFatalCond = (N_reg%(bsize*R)); AssertFatal(assertFatalCond == 0,"CCE to REG interleaving: Invalid configuration leading to non integer C (N_reg %us, bsize %d R %d)\n",N_reg, bsize, R); C = N_reg/(bsize*R); } tmp = L * (( Y + (m*N_cce)/(L*M_s_max) + n_CI ) % CEILIDIV(N_cce,L)); LOG_D(PHY, "CCE list generation for candidate %d: bundle size %d ilv size %d tmp %d\n", m, bsize, R, tmp); for (uint8_t cce_idx=0; cce_idx<L; cce_idx++) { cce = &dci_alloc->cce_list[cce_idx]; cce->cce_idx = tmp + cce_idx; LOG_D(PHY, "cce_idx %d\n", cce->cce_idx); if (pdcch_params->cr_mapping_type == NFAPI_NR_CCE_REG_MAPPING_INTERLEAVED) { LOG_D(PHY, "Interleaved CCE to REG mapping\n"); uint8_t j = cce->cce_idx, j_prime; uint8_t r,c,idx; for (uint8_t bundle_idx=0; bundle_idx<NR_NB_REG_PER_CCE/bsize; bundle_idx++) { j_prime = 6*j/bsize + bundle_idx; r = j_prime%R; c = (j_prime-r)/R; idx = (r*C + c + n_shift)%(N_reg/bsize); LOG_D(PHY, "bundle idx = %d \n j = %d \t j_prime = %d \t r = %d \t c = %d\n", idx, j , j_prime, r, c); for (uint8_t reg_idx=0; reg_idx<bsize; reg_idx++) { reg = &cce->reg_list[reg_idx]; reg->reg_idx = bsize*idx + reg_idx; reg->start_sc_idx = (reg->reg_idx/pdcch_params->n_symb) * NR_NB_SC_PER_RB; reg->symb_idx = reg->reg_idx % pdcch_params->n_symb; LOG_D(PHY, "reg %d symbol %d start subcarrier %d\n", reg->reg_idx, reg->symb_idx, reg->start_sc_idx); } } } else { // NFAPI_NR_CCE_REG_MAPPING_NON_INTERLEAVED LOG_D(PHY, "Non interleaved CCE to REG mapping\n"); for (uint8_t reg_idx=0; reg_idx<NR_NB_REG_PER_CCE; reg_idx++) { reg = &cce->reg_list[reg_idx]; reg->reg_idx = cce->cce_idx*NR_NB_REG_PER_CCE + reg_idx; reg->start_sc_idx = (reg->reg_idx/pdcch_params->n_symb) * NR_NB_SC_PER_RB; reg->symb_idx = reg->reg_idx % pdcch_params->n_symb; LOG_D(PHY, "reg %d symbol %d start subcarrier %d\n", reg->reg_idx, reg->symb_idx, reg->start_sc_idx); } } } } */ void nr_fill_cce_list(PHY_VARS_gNB *gNB, uint8_t m, nfapi_nr_dl_tti_pdcch_pdu_rel15_t *pdcch_pdu_rel15) { nr_cce_t* cce; nr_reg_t* reg; int bsize = pdcch_pdu_rel15->RegBundleSize; int R = pdcch_pdu_rel15->InterleaverSize; int n_shift = pdcch_pdu_rel15->ShiftIndex; //Max number of candidates per aggregation level -- SIB1 configured search space only int n_rb,rb_offset; get_coreset_rballoc(pdcch_pdu_rel15->FreqDomainResource,&n_rb,&rb_offset); int N_reg = n_rb; int C=-1; AssertFatal(N_reg > 0,"N_reg cannot be 0\n"); for (int d=0;d<pdcch_pdu_rel15->numDlDci;d++) { int L = pdcch_pdu_rel15->dci_pdu[d].AggregationLevel; if (pdcch_pdu_rel15->CoreSetType == NFAPI_NR_CSET_CONFIG_MIB_SIB1) AssertFatal(L>=4, "Invalid aggregation level for SIB1 configured PDCCH %d\n", L); if (pdcch_pdu_rel15->CceRegMappingType == NFAPI_NR_CCE_REG_MAPPING_INTERLEAVED) { uint16_t assertFatalCond = (N_reg%(bsize*R)); AssertFatal(assertFatalCond == 0,"CCE to REG interleaving: Invalid configuration leading to non integer C (N_reg %us, bsize %d R %d)\n",N_reg, bsize, R); C = N_reg/(bsize*R); } if (pdcch_pdu_rel15->dci_pdu[d].RNTI != 0xFFFF) LOG_D(PHY, "CCE list generation for candidate %d: bundle size %d ilv size %d CceIndex %d\n", m, bsize, R, pdcch_pdu_rel15->dci_pdu[d].CceIndex); for (uint8_t cce_idx=0; cce_idx<L; cce_idx++) { cce = &gNB->cce_list[d][cce_idx]; cce->cce_idx = pdcch_pdu_rel15->dci_pdu[d].CceIndex + cce_idx; LOG_D(PHY, "cce_idx %d\n", cce->cce_idx); if (pdcch_pdu_rel15->CceRegMappingType == NFAPI_NR_CCE_REG_MAPPING_INTERLEAVED) { LOG_D(PHY, "Interleaved CCE to REG mapping\n"); uint8_t j = cce->cce_idx, j_prime; uint8_t r,c,idx; for (uint8_t bundle_idx=0; bundle_idx<NR_NB_REG_PER_CCE/bsize; bundle_idx++) { j_prime = 6*j/bsize + bundle_idx; r = j_prime%R; c = (j_prime-r)/R; idx = (r*C + c + n_shift)%(N_reg/bsize); LOG_D(PHY, "bundle idx = %d \n j = %d \t j_prime = %d \t r = %d \t c = %d\n", idx, j , j_prime, r, c); for (uint8_t reg_idx=0; reg_idx<bsize; reg_idx++) { reg = &cce->reg_list[reg_idx]; reg->reg_idx = bsize*idx + reg_idx; reg->start_sc_idx = reg->reg_idx * NR_NB_SC_PER_RB; reg->symb_idx = 0; LOG_D(PHY, "reg %d symbol %d start subcarrier %d\n", reg->reg_idx, reg->symb_idx, reg->start_sc_idx); } } } else { // NFAPI_NR_CCE_REG_MAPPING_NON_INTERLEAVED LOG_D(PHY, "Non interleaved CCE to REG mapping\n"); for (uint8_t reg_idx=0; reg_idx<NR_NB_REG_PER_CCE; reg_idx++) { reg = &cce->reg_list[reg_idx]; reg->reg_idx = cce->cce_idx*NR_NB_REG_PER_CCE + reg_idx; reg->start_sc_idx = reg->reg_idx * NR_NB_SC_PER_RB; reg->symb_idx = 0; LOG_D(PHY, "reg %d symbol %d start subcarrier %d\n", reg->reg_idx, reg->symb_idx, reg->start_sc_idx); } } } } } /*static inline uint64_t dci_field(uint64_t field, uint8_t size) { uint64_t ret = 0; for (int i=0; i<size; i++) ret |= ((field>>i)&1)<<(size-i-1); return ret; }*/