/* * 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 1.0 (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_UE_TRANSPORT/nr_dlsch_decoding.c * \brief Top-level routines for decoding Turbo-coded (DLSCH) transport channels from 36-212, V8.6 2009-03 * \author R. Knopp * \date 2011 * \version 0.1 * \company Eurecom * \email: knopp@eurecom.fr * \note * \warning */ #include "PHY/defs_nr_UE.h" #include "PHY/phy_extern_nr_ue.h" #include "PHY/CODING/coding_extern.h" #include "PHY/CODING/coding_defs.h" #include "PHY/NR_TRANSPORT/nr_transport_common_proto.h" #include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h" #include "PHY/NR_TRANSPORT/nr_dlsch.h" #include "SCHED_NR_UE/defs.h" #include "SIMULATION/TOOLS/sim.h" #include "executables/nr-uesoftmodem.h" #include "PHY/CODING/nrLDPC_decoder/nrLDPC_decoder.h" #include "PHY/CODING/nrLDPC_decoder/nrLDPC_types.h" //#define DEBUG_DLSCH_DECODING #define OAI_LDPC_MAX_NUM_LLR 27000//26112 // NR_LDPC_NCOL_BG1*NR_LDPC_ZMAX static uint64_t nb_total_decod =0; static uint64_t nb_error_decod =0; //extern double cpuf; void free_nr_ue_dlsch(NR_UE_DLSCH_t *dlsch) { int i,r; if (dlsch) { for (i=0; i<dlsch->Mdlharq; i++) { if (dlsch->harq_processes[i]) { if (dlsch->harq_processes[i]->b) { free16(dlsch->harq_processes[i]->b,MAX_DLSCH_PAYLOAD_BYTES); dlsch->harq_processes[i]->b = NULL; } for (r=0; r<MAX_NUM_NR_DLSCH_SEGMENTS; r++) { free16(dlsch->harq_processes[i]->c[r],1056); dlsch->harq_processes[i]->c[r] = NULL; } for (r=0; r<MAX_NUM_NR_DLSCH_SEGMENTS; r++) if (dlsch->harq_processes[i]->d[r]) { free16(dlsch->harq_processes[i]->d[r],(3*8448)*sizeof(short)); dlsch->harq_processes[i]->d[r] = NULL; } for (r=0; r<(MAX_NUM_NR_DLSCH_SEGMENTS); r++) { if (dlsch->harq_processes[i]->p_nrLDPC_procBuf[r]){ nrLDPC_free_mem(dlsch->harq_processes[i]->p_nrLDPC_procBuf[r]); dlsch->harq_processes[i]->p_nrLDPC_procBuf[r] = NULL; } } free16(dlsch->harq_processes[i],sizeof(NR_DL_UE_HARQ_t)); dlsch->harq_processes[i] = NULL; } } free16(dlsch,sizeof(NR_UE_DLSCH_t)); dlsch = NULL; } } NR_UE_DLSCH_t *new_nr_ue_dlsch(uint8_t Kmimo,uint8_t Mdlharq,uint32_t Nsoft,uint8_t max_ldpc_iterations,uint8_t N_RB_DL, uint8_t abstraction_flag) { NR_UE_DLSCH_t *dlsch; uint8_t exit_flag = 0,i,r; unsigned char bw_scaling =1; switch (N_RB_DL) { case 6: bw_scaling =16; break; case 25: bw_scaling =4; break; case 50: bw_scaling =2; break; default: bw_scaling =1; break; } dlsch = (NR_UE_DLSCH_t *)malloc16(sizeof(NR_UE_DLSCH_t)); if (dlsch) { memset(dlsch,0,sizeof(NR_UE_DLSCH_t)); dlsch->Kmimo = Kmimo; dlsch->Mdlharq = Mdlharq; dlsch->Nsoft = Nsoft; dlsch->max_ldpc_iterations = max_ldpc_iterations; for (i=0; i<Mdlharq; i++) { // printf("new_ue_dlsch: Harq process %d\n",i); dlsch->harq_processes[i] = (NR_DL_UE_HARQ_t *)malloc16(sizeof(NR_DL_UE_HARQ_t)); if (dlsch->harq_processes[i]) { memset(dlsch->harq_processes[i],0,sizeof(NR_DL_UE_HARQ_t)); dlsch->harq_processes[i]->first_tx=1; dlsch->harq_processes[i]->b = (uint8_t*)malloc16(MAX_DLSCH_PAYLOAD_BYTES/bw_scaling); if (dlsch->harq_processes[i]->b) memset(dlsch->harq_processes[i]->b,0,MAX_DLSCH_PAYLOAD_BYTES/bw_scaling); else exit_flag=3; if (abstraction_flag == 0) { for (r=0; r<MAX_NUM_NR_DLSCH_SEGMENTS/bw_scaling; r++) { dlsch->harq_processes[i]->p_nrLDPC_procBuf[r] = nrLDPC_init_mem(); dlsch->harq_processes[i]->c[r] = (uint8_t*)malloc16(1056); if (dlsch->harq_processes[i]->c[r]) memset(dlsch->harq_processes[i]->c[r],0,1056); else exit_flag=2; dlsch->harq_processes[i]->d[r] = (short*)malloc16((3*8448)*sizeof(short)); if (dlsch->harq_processes[i]->d[r]) memset(dlsch->harq_processes[i]->d[r],0,(3*8448)*sizeof(short)); else exit_flag=2; } } } else { exit_flag=1; } } if (exit_flag==0) return(dlsch); } printf("new_ue_dlsch with size %zu: exit_flag = %u\n",sizeof(NR_DL_UE_HARQ_t), exit_flag); free_nr_ue_dlsch(dlsch); return(NULL); } void nr_dlsch_unscrambling(int16_t* llr, uint32_t size, uint8_t q, uint32_t Nid, uint32_t n_RNTI) { uint8_t reset; uint32_t x1, x2, s=0; reset = 1; x2 = (n_RNTI<<15) + (q<<14) + Nid; for (int i=0; i<size; i++) { if ((i&0x1f)==0) { s = lte_gold_generic(&x1, &x2, reset); reset = 0; } if (((s>>(i&0x1f))&1)==1) llr[i] = -llr[i]; } } uint32_t nr_dlsch_decoding(PHY_VARS_NR_UE *phy_vars_ue, short *dlsch_llr, NR_DL_FRAME_PARMS *frame_parms, NR_UE_DLSCH_t *dlsch, NR_DL_UE_HARQ_t *harq_process, uint32_t frame, uint16_t nb_symb_sch, uint8_t nr_tti_rx, uint8_t harq_pid, uint8_t is_crnti, uint8_t llr8_flag) { #if UE_TIMING_TRACE time_stats_t *dlsch_rate_unmatching_stats=&phy_vars_ue->dlsch_rate_unmatching_stats; time_stats_t *dlsch_turbo_decoding_stats=&phy_vars_ue->dlsch_turbo_decoding_stats; time_stats_t *dlsch_deinterleaving_stats=&phy_vars_ue->dlsch_deinterleaving_stats; #endif uint32_t A,E; uint32_t G; uint32_t ret,offset; int32_t no_iteration_ldpc, length_dec; uint32_t r,r_offset=0,Kr=8424,Kr_bytes,K_bytes_F,err_flag=0; uint8_t crc_type; int8_t llrProcBuf[OAI_LDPC_MAX_NUM_LLR] __attribute__ ((aligned(32))); t_nrLDPC_dec_params decParams; t_nrLDPC_dec_params* p_decParams = &decParams; t_nrLDPC_time_stats procTime; t_nrLDPC_time_stats* p_procTime =&procTime ; t_nrLDPC_procBuf** p_nrLDPC_procBuf = harq_process->p_nrLDPC_procBuf; int16_t z [68*384]; int8_t l [68*384]; //__m128i l; //int16_t inv_d [68*384]; uint8_t kc; uint8_t Ilbrm = 0; uint32_t Tbslbrm = 950984; uint16_t nb_rb = 30; double Coderate = 0.0; nfapi_nr_config_request_t *cfg = &phy_vars_ue->nrUE_config; uint8_t dmrs_type = cfg->pdsch_config.dmrs_type.value; uint8_t nb_re_dmrs = (dmrs_type==NFAPI_NR_DMRS_TYPE1)?6:4; uint16_t length_dmrs = 1; //cfg->pdsch_config.dmrs_max_length.value; uint32_t i,j; __m128i *pv = (__m128i*)&z; __m128i *pl = (__m128i*)&l; //NR_DL_UE_HARQ_t *harq_process = dlsch->harq_processes[0]; if (!dlsch_llr) { printf("dlsch_decoding.c: NULL dlsch_llr pointer\n"); return(dlsch->max_ldpc_iterations); } if (!harq_process) { printf("dlsch_decoding.c: NULL harq_process pointer\n"); return(dlsch->max_ldpc_iterations); } if (!frame_parms) { printf("dlsch_decoding.c: NULL frame_parms pointer\n"); return(dlsch->max_ldpc_iterations); } /*if (nr_tti_rx> (10*frame_parms->ttis_per_subframe-1)) { printf("dlsch_decoding.c: Illegal subframe index %d\n",nr_tti_rx); return(dlsch->max_ldpc_iterations); }*/ /*if (harq_process->harq_ack.ack != 2) { LOG_D(PHY, "[UE %d] DLSCH @ SF%d : ACK bit is %d instead of DTX even before PDSCH is decoded!\n", phy_vars_ue->Mod_id, nr_tti_rx, harq_process->harq_ack.ack); }*/ // nb_rb = dlsch->nb_rb; /* if (nb_rb > frame_parms->N_RB_DL) { printf("dlsch_decoding.c: Illegal nb_rb %d\n",nb_rb); return(max_ldpc_iterations); }*/ /*harq_pid = dlsch->current_harq_pid[phy_vars_ue->current_thread_id[subframe]]; if (harq_pid >= 8) { printf("dlsch_decoding.c: Illegal harq_pid %d\n",harq_pid); return(max_ldpc_iterations); } */ nb_rb = harq_process->nb_rb; harq_process->trials[harq_process->round]++; harq_process->TBS = nr_compute_tbs(harq_process->mcs,nb_rb,nb_symb_sch,nb_re_dmrs,length_dmrs, harq_process->Nl); A = harq_process->TBS; ret = dlsch->max_ldpc_iterations; harq_process->G = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs, harq_process->Qm,harq_process->Nl); G = harq_process->G; LOG_I(PHY,"DLSCH Decoding, harq_pid %d TBS %d G %d mcs %d Nl %d nb_symb_sch %d nb_rb %d\n",harq_pid,A,G, harq_process->mcs, harq_process->Nl, nb_symb_sch,nb_rb); if (harq_process->round == 0) { // This is a new packet, so compute quantities regarding segmentation harq_process->B = A+24; nr_segmentation(NULL, NULL, harq_process->B, &harq_process->C, &harq_process->K, &harq_process->Z, // [hna] Z is Zc &harq_process->F); #ifdef DEBUG_DLSCH_DECODING if (!frame%100) printf("K %d C %d Z %d nl %d \n", harq_process->K, harq_process->C, p_decParams->Z, harq_process->Nl); #endif } p_decParams->Z = harq_process->Z; //printf("dlsch decoding nr segmentation Z %d\n", p_decParams->Z); Coderate = (float) A /(float) G; if ((A <=292) || ((A<=3824) && (Coderate <= 0.6667)) || Coderate <= 0.25) { p_decParams->BG = 2; if (Coderate < 0.3333){ p_decParams->R = 15; kc = 52; } else if (Coderate <0.6667){ p_decParams->R = 13; kc = 32; } else { p_decParams->R = 23; kc = 17; } } else{ p_decParams->BG = 1; if (Coderate < 0.6667){ p_decParams->R = 13; kc = 68; } else if (Coderate <0.8889){ p_decParams->R = 23; kc = 35; } else { p_decParams->R = 89; kc = 27; } } //printf("coderate %f kc %d \n", Coderate, kc); p_decParams->numMaxIter = dlsch->max_ldpc_iterations; p_decParams->outMode= 0; err_flag = 0; r_offset = 0; unsigned char bw_scaling =1; switch (frame_parms->N_RB_DL) { case 106: bw_scaling =2; break; default: bw_scaling =1; break; } if (harq_process->C > MAX_NUM_NR_DLSCH_SEGMENTS/bw_scaling) { LOG_E(PHY,"Illegal harq_process->C %d > %d\n",harq_process->C,MAX_NUM_NR_DLSCH_SEGMENTS/bw_scaling); return((1+dlsch->max_ldpc_iterations)); } #ifdef DEBUG_DLSCH_DECODING printf("Segmentation: C %d, K %d\n",harq_process->C,harq_process->K); #endif opp_enabled=1; Kr = harq_process->K; // [hna] overwrites this line "Kr = p_decParams->Z*kb" Kr_bytes = Kr>>3; K_bytes_F = Kr_bytes-(harq_process->F>>3); Tbslbrm = nr_compute_tbs(28,nb_rb,frame_parms->symbols_per_slot,0,0, harq_process->Nl); for (r=0; r<harq_process->C; r++) { //printf("start rx segment %d\n",r); E = nr_get_E(G, harq_process->C, harq_process->Qm, harq_process->Nl, r); #if UE_TIMING_TRACE start_meas(dlsch_deinterleaving_stats); #endif nr_deinterleaving_ldpc(E, harq_process->Qm, harq_process->w[r], // [hna] w is e dlsch_llr+r_offset); //for (int i =0; i<16; i++) // printf("rx output deinterleaving w[%d]= %d r_offset %d\n", i,harq_process->w[r][i], r_offset); #if UE_TIMING_TRACE stop_meas(dlsch_deinterleaving_stats); #endif #if UE_TIMING_TRACE start_meas(dlsch_rate_unmatching_stats); #endif #ifdef DEBUG_DLSCH_DECODING LOG_D(PHY,"HARQ_PID %d Rate Matching Segment %d (coded bits %d,unpunctured/repeated bits %d, TBS %d, mod_order %d, nb_rb %d, Nl %d, rv %d, round %d)...\n", harq_pid,r, G, Kr*3, harq_process->TBS, harq_process->Qm, harq_process->nb_rb, harq_process->Nl, harq_process->rvidx, harq_process->round); #endif if (nr_rate_matching_ldpc_rx(Ilbrm, Tbslbrm, p_decParams->BG, p_decParams->Z, harq_process->d[r], harq_process->w[r], harq_process->C, harq_process->rvidx, (harq_process->round==0)?1:0, E)==-1) { #if UE_TIMING_TRACE stop_meas(dlsch_rate_unmatching_stats); #endif LOG_E(PHY,"dlsch_decoding.c: Problem in rate_matching\n"); return(dlsch->max_ldpc_iterations); } else { #if UE_TIMING_TRACE stop_meas(dlsch_rate_unmatching_stats); #endif } //for (int i =0; i<16; i++) // printf("rx output ratematching d[%d]= %d r_offset %d\n", i,harq_process->d[r][i], r_offset); r_offset += E; #ifdef DEBUG_DLSCH_DECODING if (r==0) { write_output("decoder_llr.m","decllr",dlsch_llr,G,1,0); write_output("decoder_in.m","dec",&harq_process->d[0][0],(3*8*Kr_bytes)+12,1,0); } printf("decoder input(segment %d) :",r); int i; for (i=0;i<(3*8*Kr_bytes)+12;i++) printf("%d : %d\n",i,harq_process->d[r][i]); printf("\n"); #endif // printf("Clearing c, %p\n",harq_process->c[r]); memset(harq_process->c[r],0,Kr_bytes); // printf("done\n"); if (harq_process->C == 1){ crc_type = CRC24_A; length_dec = harq_process->B; } else{ crc_type = CRC24_B; length_dec = (harq_process->B+24*harq_process->C)/harq_process->C; } if (err_flag == 0) { #if UE_TIMING_TRACE start_meas(dlsch_turbo_decoding_stats); #endif //LOG_E(PHY,"AbsSubframe %d.%d Start LDPC segment %d/%d A %d ",frame%1024,nr_tti_rx,r,harq_process->C-1, A); //printf("harq process dr iteration %d\n", p_decParams->numMaxIter); memset(pv,0,2*harq_process->Z*sizeof(int16_t)); //memset(pl,0,2*p_decParams->Z*sizeof(int8_t)); memset((pv+K_bytes_F),127,harq_process->F*sizeof(int16_t)); for (i=((2*p_decParams->Z)>>3), j = 0; i < K_bytes_F; i++, j++) { pv[i]= _mm_loadu_si128((__m128i*)(&harq_process->d[r][8*j])); } for (i=Kr_bytes,j=K_bytes_F-((2*p_decParams->Z)>>3); i < ((kc*p_decParams->Z)>>3); i++, j++) { pv[i]= _mm_loadu_si128((__m128i*)(&harq_process->d[r][8*j])); } for (i=0, j=0; j < ((kc*p_decParams->Z)>>4); i+=2, j++) { pl[j] = _mm_packs_epi16(pv[i],pv[i+1]); } no_iteration_ldpc = nrLDPC_decoder(p_decParams, (int8_t*)&pl[0], llrProcBuf, p_nrLDPC_procBuf[r], p_procTime); // Fixme: correct type is unsigned, but nrLDPC_decoder and all called behind use signed int if (check_crc((uint8_t*)llrProcBuf,length_dec,harq_process->F,crc_type)) { printf("Segment %d CRC OK\n",r); ret = 2; } else { printf("CRC NOK\n"); ret = 1+dlsch->max_ldpc_iterations; } nb_total_decod++; if (no_iteration_ldpc > dlsch->max_ldpc_iterations){ nb_error_decod++; } ret=no_iteration_ldpc; //if (!nb_total_decod%10000){ //printf("Error number of iteration LPDC %d %ld/%ld \n", no_iteration_ldpc, nb_error_decod,nb_total_decod);fflush(stdout); //} //else //printf("OK number of iteration LPDC %d\n", no_iteration_ldpc); for (int m=0; m < Kr>>3; m ++) { harq_process->c[r][m]= (uint8_t) llrProcBuf[m]; } #ifdef DEBUG_DLSCH_DECODING //printf("output decoder %d %d %d %d %d \n", harq_process->c[r][0], harq_process->c[r][1], harq_process->c[r][2],harq_process->c[r][3], harq_process->c[r][4]); for (int k=0;k<A>>3;k++) printf("output decoder [%d] = 0x%02x \n", k, harq_process->c[r][k]); printf("no_iterations_ldpc %d (ret %d)\n",no_iteration_ldpc,ret); //write_output("dec_output.m","dec0",harq_process->c[0],Kr_bytes,1,4); #endif #if UE_TIMING_TRACE stop_meas(dlsch_turbo_decoding_stats); #endif } /*printf("Segmentation: C %d r %d, dlsch_rate_unmatching_stats %5.3f dlsch_deinterleaving_stats %5.3f dlsch_turbo_decoding_stats %5.3f \n", harq_process->C, r, dlsch_rate_unmatching_stats->p_time/(cpuf*1000.0), dlsch_deinterleaving_stats->p_time/(cpuf*1000.0), dlsch_turbo_decoding_stats->p_time/(cpuf*1000.0));*/ if ((err_flag == 0) && (ret>=(1+dlsch->max_ldpc_iterations))) {// a Code segment is in error so break; LOG_D(PHY,"AbsSubframe %d.%d CRC failed, segment %d/%d \n",frame%1024,nr_tti_rx,r,harq_process->C-1); err_flag = 1; } } int32_t frame_rx_prev = frame; int32_t tti_rx_prev = nr_tti_rx - 1; if (tti_rx_prev < 0) { frame_rx_prev--; tti_rx_prev += 10*frame_parms->ttis_per_subframe; } frame_rx_prev = frame_rx_prev%1024; if (err_flag == 1) { #if UE_DEBUG_TRACE LOG_I(PHY,"[UE %d] DLSCH: Setting NAK for SFN/SF %d/%d (pid %d, status %d, round %d, TBS %d, mcs %d) Kr %d r %d harq_process->round %d\n", phy_vars_ue->Mod_id, frame, nr_tti_rx, harq_pid,harq_process->status, harq_process->round,harq_process->TBS,harq_process->mcs,Kr,r,harq_process->round); #endif harq_process->harq_ack.ack = 0; harq_process->harq_ack.harq_id = harq_pid; harq_process->harq_ack.send_harq_status = 1; harq_process->errors[harq_process->round]++; harq_process->round++; // printf("Rate: [UE %d] DLSCH: Setting NACK for subframe %d (pid %d, round %d)\n",phy_vars_ue->Mod_id,subframe,harq_pid,harq_process->round); if (harq_process->round >= dlsch->Mdlharq) { harq_process->status = SCH_IDLE; harq_process->round = 0; } if(is_crnti) { LOG_D(PHY,"[UE %d] DLSCH: Setting NACK for nr_tti_rx %d (pid %d, pid status %d, round %d/Max %d, TBS %d)\n", phy_vars_ue->Mod_id,nr_tti_rx,harq_pid,harq_process->status,harq_process->round,dlsch->Mdlharq,harq_process->TBS); } return((1+dlsch->max_ldpc_iterations)); } else { #if UE_DEBUG_TRACE LOG_I(PHY,"[UE %d] DLSCH: Setting ACK for nr_tti_rx %d TBS %d mcs %d nb_rb %d harq_process->round %d\n", phy_vars_ue->Mod_id,nr_tti_rx,harq_process->TBS,harq_process->mcs,harq_process->nb_rb, harq_process->round); #endif harq_process->status = SCH_IDLE; harq_process->round = 0; harq_process->harq_ack.ack = 1; harq_process->harq_ack.harq_id = harq_pid; harq_process->harq_ack.send_harq_status = 1; //LOG_I(PHY,"[UE %d] DLSCH: Setting ACK for SFN/SF %d/%d (pid %d, status %d, round %d, TBS %d, mcs %d)\n", // phy_vars_ue->Mod_id, frame, subframe, harq_pid, harq_process->status, harq_process->round,harq_process->TBS,harq_process->mcs); if(is_crnti) { LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for nr_tti_rx %d (pid %d, round %d, TBS %d)\n",phy_vars_ue->Mod_id,nr_tti_rx,harq_pid,harq_process->round,harq_process->TBS); } //LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for subframe %d (pid %d, round %d)\n",phy_vars_ue->Mod_id,subframe,harq_pid,harq_process->round); } // Reassembly of Transport block here offset = 0; Kr = harq_process->K; Kr_bytes = Kr>>3; /* printf("harq_pid %d\n",harq_pid); printf("F %d, Fbytes %d\n",harq_process->F,harq_process->F>>3); printf("C %d\n",harq_process->C); */ for (r=0; r<harq_process->C; r++) { memcpy(harq_process->b+offset, harq_process->c[r], Kr_bytes- - (harq_process->F>>3) -((harq_process->C>1)?3:0)); offset += (Kr_bytes - (harq_process->F>>3) - ((harq_process->C>1)?3:0)); #ifdef DEBUG_DLSCH_DECODING printf("Segment %d : Kr= %d bytes\n",r,Kr_bytes); printf("copied %d bytes to b sequence (harq_pid %d)\n", (Kr_bytes - (harq_process->F>>3)-((harq_process->C>1)?3:0)),harq_pid); printf("b[0] = %x,c[%d] = %x\n", harq_process->b[offset], harq_process->F>>3, harq_process->c[r]); #endif } dlsch->last_iteration_cnt = ret; return(ret); } #ifdef UE_DLSCH_PARALLELISATION uint32_t nr_dlsch_decoding_mthread(PHY_VARS_NR_UE *phy_vars_ue, UE_nr_rxtx_proc_t *proc, int eNB_id, short *dlsch_llr, NR_DL_FRAME_PARMS *frame_parms, NR_UE_DLSCH_t *dlsch, NR_DL_UE_HARQ_t *harq_process, uint32_t frame, uint16_t nb_symb_sch, uint8_t nr_tti_rx, uint8_t harq_pid, uint8_t is_crnti, uint8_t llr8_flag) { #if UE_TIMING_TRACE time_stats_t *dlsch_rate_unmatching_stats=&phy_vars_ue->dlsch_rate_unmatching_stats; time_stats_t *dlsch_turbo_decoding_stats=&phy_vars_ue->dlsch_turbo_decoding_stats; time_stats_t *dlsch_deinterleaving_stats=&phy_vars_ue->dlsch_deinterleaving_stats; #endif uint32_t A,E; uint32_t G; uint32_t ret,offset; //short dummy_w[MAX_NUM_DLSCH_SEGMENTS][3*(8448+64)]; uint32_t r,r_offset=0,Kr,Kr_bytes,err_flag=0,K_bytes_F; uint8_t crc_type; //UE_rxtx_proc_t *proc = &phy_vars_ue->proc; int32_t no_iteration_ldpc; int Cby2; /*uint8_t C; uint8_t Qm; uint8_t Nl; uint8_t r_thread; uint32_t Er, Gp,GpmodC;*/ t_nrLDPC_dec_params decParams; t_nrLDPC_dec_params* p_decParams = &decParams; t_nrLDPC_time_stats procTime; t_nrLDPC_time_stats* p_procTime =&procTime ; int8_t llrProcBuf[OAI_LDPC_MAX_NUM_LLR] __attribute__ ((aligned(32))); t_nrLDPC_procBuf* p_nrLDPC_procBuf = harq_process->p_nrLDPC_procBuf[0]; int16_t z [68*384]; int8_t l [68*384]; //__m128i l; int16_t inv_d [68*384]; //int16_t *p_invd =&inv_d; uint8_t kb, kc; uint8_t Ilbrm = 0; uint32_t Tbslbrm = 950984; uint16_t nb_rb = 30; //to update //uint16_t nb_symb_sch = 12; uint8_t nb_re_dmrs = 6; uint16_t length_dmrs = 1; uint32_t i,j; //uint32_t k; __m128i *pv = (__m128i*)&z; __m128i *pl = (__m128i*)&l; if (!dlsch_llr) { printf("dlsch_decoding.c: NULL dlsch_llr pointer\n"); return(dlsch->max_ldpc_iterations); } if (!harq_process) { printf("dlsch_decoding.c: NULL harq_process pointer\n"); return(dlsch->max_ldpc_iterations); } if (!frame_parms) { printf("dlsch_decoding.c: NULL frame_parms pointer\n"); return(dlsch->max_ldpc_iterations); } /* if (nr_tti_rx> (10*frame_parms->ttis_per_subframe-1)) { printf("dlsch_decoding.c: Illegal subframe index %d\n",nr_tti_rx); return(dlsch->max_ldpc_iterations); } if (dlsch->harq_ack[nr_tti_rx].ack != 2) { LOG_D(PHY, "[UE %d] DLSCH @ SF%d : ACK bit is %d instead of DTX even before PDSCH is decoded!\n", phy_vars_ue->Mod_id, nr_tti_rx, dlsch->harq_ack[nr_tti_rx].ack); }*/ /* if (nb_rb > frame_parms->N_RB_DL) { printf("dlsch_decoding.c: Illegal nb_rb %d\n",nb_rb); return(max_ldpc_iterations); }*/ /*harq_pid = dlsch->current_harq_pid[phy_vars_ue->current_thread_id[subframe]]; if (harq_pid >= 8) { printf("dlsch_decoding.c: Illegal harq_pid %d\n",harq_pid); return(max_ldpc_iterations); } */ nb_rb = harq_process->nb_rb; harq_process->trials[harq_process->round]++; harq_process->TBS = nr_compute_tbs(harq_process->mcs,nb_rb,nb_symb_sch,nb_re_dmrs,length_dmrs, harq_process->Nl); A = harq_process->TBS; //2072 for QPSK 1/3 ret = dlsch->max_ldpc_iterations; harq_process->G = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs, harq_process->Qm,harq_process->Nl); G = harq_process->G; proc->decoder_main_available = 1; proc->decoder_thread_available = 0; proc->decoder_thread_available1 = 0; //get_G(frame_parms,nb_rb,dlsch->rb_alloc,mod_order,num_pdcch_symbols,phy_vars_ue->frame,subframe); // printf("DLSCH Decoding, harq_pid %d Ndi %d\n",harq_pid,harq_process->Ndi); if (harq_process->round == 0) { // This is a new packet, so compute quantities regarding segmentation harq_process->B = A+24; nr_segmentation(NULL, NULL, harq_process->B, &harq_process->C, &harq_process->K, &harq_process->Z, &harq_process->F); p_decParams->Z = harq_process->Z; } kb = harq_process->K/harq_process->Z; if ( kb==22){ p_decParams->BG = 1; p_decParams->R = 13; kc = 68; } else{ p_decParams->BG = 2; p_decParams->R = 13; kc = 52; } p_decParams->numMaxIter = 2; Kr = p_decParams->Z*kb; p_decParams->outMode= 0; /* else { printf("dlsch_decoding.c: Ndi>0 not checked yet!!\n"); return(max_ldpc_iterations); } */ err_flag = 0; r_offset = 0; unsigned char bw_scaling =1; switch (frame_parms->N_RB_DL) { case 106: bw_scaling =2; break; default: bw_scaling =1; break; } if (harq_process->C > MAX_NUM_DLSCH_SEGMENTS/bw_scaling) { LOG_E(PHY,"Illegal harq_process->C %d > %d\n",harq_process->C,MAX_NUM_DLSCH_SEGMENTS/bw_scaling); return((1+dlsch->max_ldpc_iterations)); } #ifdef DEBUG_DLSCH_DECODING printf("Segmentation: C %d, K %d\n",harq_process->C,harq_process->K); #endif opp_enabled=1; if (harq_process->C>1) { // wakeup worker if more than 1 segment if (pthread_mutex_lock(&proc->mutex_dlsch_td) != 0) { LOG_E( PHY, "[SCHED][UE %d][Slot0] error locking mutex for UE dlsch td\n",phy_vars_ue->Mod_id ); exit_fun("nothing to add"); } /*Qm= harq_process->Qm; Nl=harq_process->Nl; r_thread = harq_process->C/2-1; C= harq_process->C; Gp = G/Nl/Qm; GpmodC = Gp%C; if (r_thread < (C-(GpmodC))) Er = Nl*Qm * (Gp/C); else Er = Nl*Qm * ((GpmodC==0?0:1) + (Gp/C)); printf("mthread Er %d\n", Er); printf("mthread instance_cnt_dlsch_td %d\n", proc->instance_cnt_dlsch_td);*/ proc->instance_cnt_dlsch_td++; proc->eNB_id = eNB_id; proc->harq_pid = harq_pid; proc->llr8_flag = llr8_flag; //proc->r[0] = 1; if (proc->instance_cnt_dlsch_td == 0) { LOG_D(PHY,"unblock dlsch td processing thread blocked on instance_cnt_dlsch_td : %d \n", proc->instance_cnt_dlsch_td ); if (pthread_cond_signal(&proc->cond_dlsch_td) != 0) { LOG_E( PHY, "[SCHED][UE %d][Slot0] ERROR pthread_cond_signal for UE dlsch td\n", phy_vars_ue->Mod_id); exit_fun("nothing to add"); } if (pthread_mutex_unlock(&proc->mutex_dlsch_td) != 0) { LOG_E( PHY, "[SCHED][UE %d][Slot0] error unlocking mutex for UE dlsch td \n",phy_vars_ue->Mod_id ); exit_fun("nothing to add"); } } else { LOG_E( PHY, "[SCHED][UE %d] UE dlsch td thread busy (IC %d)!!\n", phy_vars_ue->Mod_id, proc->instance_cnt_dlsch_td); if (proc->instance_cnt_dlsch_td > 4) exit_fun("instance_cnt_dlsch_td > 4"); } //AssertFatal(pthread_cond_signal(&proc->cond_slot1_dl_processing) ==0 ,""); AssertFatal(pthread_mutex_unlock(&proc->mutex_dlsch_td) ==0,""); if (harq_process->C>2) { if (pthread_mutex_lock(&proc->mutex_dlsch_td1) != 0) { LOG_E( PHY, "[SCHED][UE %d][Slot0] error locking mutex for UE dlsch td\n",phy_vars_ue->Mod_id ); exit_fun("nothing to add"); } proc->instance_cnt_dlsch_td1++; proc->eNB_id = eNB_id; proc->harq_pid = harq_pid; proc->llr8_flag = llr8_flag; // proc->Er = Er; if (proc->instance_cnt_dlsch_td1 == 0) { LOG_D(PHY,"unblock slot1 dl processing thread blocked on instance_cnt_dlsch_td : %d \n", proc->instance_cnt_dlsch_td1 ); if (pthread_cond_signal(&proc->cond_dlsch_td1) != 0) { LOG_E( PHY, "[SCHED][UE %d][Slot0] ERROR pthread_cond_signal for UE dlsch td\n", phy_vars_ue->Mod_id); exit_fun("nothing to add"); } if (pthread_mutex_unlock(&proc->mutex_dlsch_td1) != 0) { LOG_E( PHY, "[SCHED][UE %d][Slot0] error unlocking mutex for UE dlsch td \n",phy_vars_ue->Mod_id ); exit_fun("nothing to add"); } } else { LOG_E( PHY, "[SCHED][UE %d] UE dlsch td thread 1 busy (IC %d)!!\n", phy_vars_ue->Mod_id, proc->instance_cnt_dlsch_td1); if (proc->instance_cnt_dlsch_td1 > 4) exit_fun("instance_cnt_dlsch_td1 > 4"); } AssertFatal(pthread_mutex_unlock(&proc->mutex_dlsch_td1) ==0,""); } /* if (pthread_mutex_timedlock(&proc->mutex_td,&wait) != 0) { printf("[eNB] ERROR pthread_mutex_lock for TD thread (IC %d)\n", proc->instance_cnt_td); exit_fun( "error locking mutex_fep" ); return -1; } if (proc->instance_cnt_td==0) { printf("[UE] TD thread busy\n"); exit_fun("TD thread busy"); pthread_mutex_unlock( &proc->mutex_td ); return -1; } ++proc->instance_cnt_td; proc->tdp.UE = phy_vars_ue; proc->tdp.eNB_id = eNB_id; proc->tdp.harq_pid = harq_pid; proc->tdp.llr8_flag = llr8_flag; printf("----- 2thread llr flag %d tdp flag %d\n",llr8_flag, proc->tdp.llr8_flag); // wakeup worker to do second half segments if (pthread_cond_signal(&proc->cond_td) != 0) { printf("[UE] ERROR pthread_cond_signal for td thread exit\n"); exit_fun( "ERROR pthread_cond_signal" ); return (1+dlsch->last_iteration_cnt); } pthread_mutex_unlock( &proc->mutex_td );*/ Cby2 = 1; //harq_process->C/2; //proc->decoder_main_available = 1; } else { Cby2 = 1; } //for (r=0; r<Cby2; r++) { r = 0; if (r==0) r_offset =0; Kr = harq_process->K; Kr_bytes = Kr>>3; K_bytes_F = Kr_bytes-(harq_process->F>>3); Tbslbrm = nr_compute_tbs(28,nb_rb,frame_parms->symbols_per_slot,0,0, harq_process->Nl); E = nr_get_E(G, harq_process->C, harq_process->Qm, harq_process->Nl, r); /* printf("Subblock deinterleaving, dlsch_llr %p, w %p\n", dlsch_llr+r_offset, &harq_process->w[r]); */ #if UE_TIMING_TRACE start_meas(dlsch_deinterleaving_stats); #endif nr_deinterleaving_ldpc(E, harq_process->Qm, harq_process->w[r], dlsch_llr+r_offset); #ifdef DEBUG_DLSCH_DECODING for (int i =0; i<16; i++) printf("rx output deinterleaving w[%d]= %d r_offset %d\n", i,harq_process->w[r][i], r_offset); #endif #if UE_TIMING_TRACE stop_meas(dlsch_deinterleaving_stats); #endif #if UE_TIMING_TRACE start_meas(dlsch_rate_unmatching_stats); #endif #ifdef DEBUG_DLSCH_DECODING LOG_D(PHY,"HARQ_PID %d Rate Matching Segment %d (coded bits %d,unpunctured/repeated bits %d, TBS %d, mod_order %d, nb_rb %d, Nl %d, rv %d, round %d)...\n", harq_pid,r, G, Kr*3, harq_process->TBS, harq_process->Qm, harq_process->nb_rb, harq_process->Nl, harq_process->rvidx, harq_process->round); #endif if (nr_rate_matching_ldpc_rx(Ilbrm, Tbslbrm, p_decParams->BG, p_decParams->Z, harq_process->d[r], harq_process->w[r], harq_process->C, harq_process->rvidx, (harq_process->round==0)?1:0, E)==-1) { #if UE_TIMING_TRACE stop_meas(dlsch_rate_unmatching_stats); #endif LOG_E(PHY,"dlsch_decoding.c: Problem in rate_matching\n"); return(dlsch->max_ldpc_iterations); } else { #if UE_TIMING_TRACE stop_meas(dlsch_rate_unmatching_stats); #endif } //for (int i =0; i<16; i++) // printf("rx output ratematching d[%d]= %d r_offset %d\n", i,harq_process->d[r][i], r_offset); //r_offset += E; //printf("main thread r_offset %d\n",r_offset); #ifdef DEBUG_DLSCH_DECODING for (int i =0; i<16; i++) printf("rx output ratematching d[%d]= %d r_offset %d\n", i,harq_process->d[r][i], r_offset); #endif #ifdef DEBUG_DLSCH_DECODING if (r==0) { write_output("decoder_llr.m","decllr",dlsch_llr,G,1,0); write_output("decoder_in.m","dec",&harq_process->d[0][96],(3*8*Kr_bytes)+12,1,0); } printf("decoder input(segment %d) :",r); for (int i=0;i<(3*8*Kr_bytes);i++) printf("%d : %d\n",i,harq_process->d[r][i]); printf("\n"); #endif // printf("Clearing c, %p\n",harq_process->c[r]); memset(harq_process->c[r],0,Kr_bytes); // printf("done\n"); if (harq_process->C == 1) crc_type = CRC24_A; else crc_type = CRC24_B; //#ifndef __AVX2__ if (err_flag == 0) { /* LOG_I(PHY, "turbo algo Kr=%d cb_cnt=%d C=%d nbRB=%d crc_type %d TBSInput=%d TBSHarq=%d TBSplus24=%d mcs=%d Qm=%d RIV=%d round=%d maxIter %d\n", Kr,r,harq_process->C,harq_process->nb_rb,crc_type,A,harq_process->TBS, harq_process->B,harq_process->mcs,harq_process->Qm,harq_process->rvidx,harq_process->round,dlsch->max_ldpc_iterations); */ if (llr8_flag) { AssertFatal (Kr >= 256, "turbo algo issue Kr=%d cb_cnt=%d C=%d nbRB=%d TBSInput=%d TBSHarq=%d TBSplus24=%d mcs=%d Qm=%d RIV=%d round=%d\n", Kr,r,harq_process->C,harq_process->nb_rb,A,harq_process->TBS,harq_process->B,harq_process->mcs,harq_process->Qm,harq_process->rvidx,harq_process->round); } #if UE_TIMING_TRACE start_meas(dlsch_turbo_decoding_stats); #endif LOG_D(PHY,"mthread AbsSubframe %d.%d Start turbo segment %d/%d \n",frame%1024,nr_tti_rx,r,harq_process->C-1); for (int cnt =0; cnt < (kc-2)*p_decParams->Z; cnt++){ inv_d[cnt] = (1)*harq_process->d[r][cnt]; } memset(pv,0,2*p_decParams->Z*sizeof(int16_t)); //memset(pl,0,2*p_decParams->Z*sizeof(int8_t)); memset((pv+K_bytes_F),127,harq_process->F*sizeof(int16_t)); for (i=((2*p_decParams->Z)>>3), j = 0; i < K_bytes_F+((2*p_decParams->Z)>>3); i++, j++) { pv[i]= _mm_loadu_si128((__m128i*)(&inv_d[8*j])); } for (i=Kr_bytes+((2*p_decParams->Z)>>3),j=Kr_bytes; i < ((kc*p_decParams->Z)>>3); i++, j++) { pv[i]= _mm_loadu_si128((__m128i*)(&inv_d[8*j])); } for (i=0, j=0; j < ((kc*p_decParams->Z)>>4); i+=2, j++) { pl[j] = _mm_packs_epi16(pv[i],pv[i+1]); } no_iteration_ldpc = nrLDPC_decoder(p_decParams, (int8_t*)&pl[0], llrProcBuf, p_nrLDPC_procBuf, p_procTime); nb_total_decod++; if (no_iteration_ldpc > 10){ nb_error_decod++; ret = 1+dlsch->max_ldpc_iterations; } else { ret=2; } if (check_crc(llrProcBuf,harq_process->B,harq_process->F,crc_type)) { printf("CRC OK\n"); ret = 2; } else { printf("CRC NOK\n"); ret = 1+dlsch->max_ldpc_iterations; } //if (!nb_total_decod%10000){ printf("Error number of iteration LPDC %d %ld/%ld \n", no_iteration_ldpc, nb_error_decod,nb_total_decod);fflush(stdout); //} //else //printf("OK number of iteration LPDC %d\n", no_iteration_ldpc); for (int m=0; m < Kr>>3; m ++) { harq_process->c[r][m]= (uint8_t) llrProcBuf[m]; } /*for (int u=0; u < Kr>>3; u ++) { ullrProcBuf[u]= (uint8_t) llrProcBuf[u]; } printf("output unsigned ullrProcBuf \n"); for (int j=0; j < Kr>>3; j ++) { printf(" %d \n", ullrProcBuf[j]); } printf(" \n");*/ //printf("output channel decoder %d %d %d %d %d \n", harq_process->c[r][0], harq_process->c[r][1], harq_process->c[r][2],harq_process->c[r][3], harq_process->c[r][4]); //printf("output decoder %d %d %d %d %d \n", harq_process->c[r][0], harq_process->c[r][1], harq_process->c[r][2],harq_process->c[r][3], harq_process->c[r][4]); #ifdef DEBUG_DLSCH_DECODING for (int k=0;k<32;k++) printf("output decoder [%d] = 0x%02x \n", k, harq_process->c[r][k]); #endif #if UE_TIMING_TRACE stop_meas(dlsch_turbo_decoding_stats); #endif } if ((err_flag == 0) && (ret>=(1+dlsch->max_ldpc_iterations))) {// a Code segment is in error so break; LOG_D(PHY,"AbsSubframe %d.%d CRC failed, segment %d/%d \n",frame%1024,nr_tti_rx,r,harq_process->C-1); err_flag = 1; } //} //loop r int32_t frame_rx_prev = frame; int32_t tti_rx_prev = nr_tti_rx - 1; if (tti_rx_prev < 0) { frame_rx_prev--; tti_rx_prev += 10*frame_parms->ttis_per_subframe; } frame_rx_prev = frame_rx_prev%1024; if (err_flag == 1) { #if UE_DEBUG_TRACE LOG_I(PHY,"[UE %d] DLSCH: Setting NAK for SFN/SF %d/%d (pid %d, status %d, round %d, TBS %d, mcs %d) Kr %d r %d harq_process->round %d\n", phy_vars_ue->Mod_id, frame, nr_tti_rx, harq_pid,harq_process->status, harq_process->round,harq_process->TBS,harq_process->mcs,Kr,r,harq_process->round); #endif harq_process->harq_ack.ack = 0; harq_process->harq_ack.harq_id = harq_pid; harq_process->harq_ack.send_harq_status = 1; harq_process->errors[harq_process->round]++; harq_process->round++; // printf("Rate: [UE %d] DLSCH: Setting NACK for subframe %d (pid %d, round %d)\n",phy_vars_ue->Mod_id,subframe,harq_pid,harq_process->round); if (harq_process->round >= dlsch->Mdlharq) { harq_process->status = SCH_IDLE; harq_process->round = 0; } if(is_crnti) { LOG_D(PHY,"[UE %d] DLSCH: Setting NACK for nr_tti_rx %d (pid %d, pid status %d, round %d/Max %d, TBS %d)\n", phy_vars_ue->Mod_id,nr_tti_rx,harq_pid,harq_process->status,harq_process->round,dlsch->Mdlharq,harq_process->TBS); } return((1+dlsch->max_ldpc_iterations)); } else { #if UE_DEBUG_TRACE LOG_I(PHY,"[UE %d] DLSCH: Setting ACK for nr_tti_rx %d TBS %d mcs %d nb_rb %d\n", phy_vars_ue->Mod_id,nr_tti_rx,harq_process->TBS,harq_process->mcs,harq_process->nb_rb); #endif harq_process->status = SCH_IDLE; harq_process->round = 0; harq_process->harq_ack.ack = 1; harq_process->harq_ack.harq_id = harq_pid; harq_process->harq_ack.send_harq_status = 1; //LOG_I(PHY,"[UE %d] DLSCH: Setting ACK for SFN/SF %d/%d (pid %d, status %d, round %d, TBS %d, mcs %d)\n", // phy_vars_ue->Mod_id, frame, subframe, harq_pid, harq_process->status, harq_process->round,harq_process->TBS,harq_process->mcs); if(is_crnti) { LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for nr_tti_rx %d (pid %d, round %d, TBS %d)\n",phy_vars_ue->Mod_id,nr_tti_rx,harq_pid,harq_process->round,harq_process->TBS); } //LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for subframe %d (pid %d, round %d)\n",phy_vars_ue->Mod_id,subframe,harq_pid,harq_process->round); } // Reassembly of Transport block here offset = 0; /* printf("harq_pid %d\n",harq_pid); printf("F %d, Fbytes %d\n",harq_process->F,harq_process->F>>3); printf("C %d\n",harq_process->C); */ uint32_t wait = 0; if (harq_process->C==2){ while((proc->decoder_thread_available == 0) ) { usleep(1); wait++; } } else if ((harq_process->C==3) ){ while((proc->decoder_thread_available == 0) || (proc->decoder_thread_available1 == 0)) { usleep(1); wait++; } } proc->decoder_main_available = 0; for (r=0; r<harq_process->C; r++) { Kr = harq_process->K; //to check if same K in all segments Kr_bytes = Kr>>3; memcpy(harq_process->b+offset, harq_process->c[r], Kr_bytes- - (harq_process->F>>3) -((harq_process->C>1)?3:0)); offset += (Kr_bytes - (harq_process->F>>3) - ((harq_process->C>1)?3:0)); #ifdef DEBUG_DLSCH_DECODING printf("Segment %d : Kr= %d bytes\n",r,Kr_bytes); printf("copied %d bytes to b sequence (harq_pid %d)\n", (Kr_bytes - (harq_process->F>>3)-((harq_process->C>1)?3:0)),harq_pid); printf("b[0] = %x,c[%d] = %x\n", harq_process->b[offset], harq_process->F>>3, harq_process->c[r]); #endif } dlsch->last_iteration_cnt = ret; //proc->decoder_thread_available = 0; //proc->decoder_main_available = 0; //wait for worker to finish //wait_on_busy_condition(&proc->mutex_td,&proc->cond_td,&proc->instance_cnt_dlsch td,"dlsch td thread"); //return( (ret>proc->tdp.ret) ? ret : proc->tdp.ret ); return(ret); } #endif #ifdef UE_DLSCH_PARALLELISATION #define FIFO_PRIORITY 39 void *nr_dlsch_decoding_2thread0(void *arg) { static __thread int UE_dlsch_td_retval; struct nr_rxtx_thread_data *rtd = arg; UE_nr_rxtx_proc_t *proc = rtd->proc; PHY_VARS_NR_UE *phy_vars_ue = rtd->UE; NR_DL_FRAME_PARMS *frame_parms = &phy_vars_ue->frame_parms; int llr8_flag1; int32_t no_iteration_ldpc; t_nrLDPC_dec_params decParams; t_nrLDPC_dec_params* p_decParams = &decParams; t_nrLDPC_time_stats procTime; t_nrLDPC_time_stats* p_procTime =&procTime ; int8_t llrProcBuf[OAI_LDPC_MAX_NUM_LLR] __attribute__ ((aligned(32))); t_nrLDPC_procBuf* p_nrLDPC_procBuf; int16_t z [68*384]; int8_t l [68*384]; //__m128i l; int16_t inv_d [68*384]; int16_t *p_invd =&inv_d; uint8_t kb, kc; uint8_t Ilbrm = 0; uint32_t Tbslbrm = 950984; uint16_t nb_rb = 30; //to update uint16_t nb_symb_sch = 12; uint8_t nb_re_dmrs = 6; uint16_t length_dmrs = 1; uint32_t i,j; uint32_t k; __m128i *pv = (__m128i*)&z; __m128i *pl = (__m128i*)&l; proc->instance_cnt_dlsch_td=-1; proc->nr_tti_rx=proc->sub_frame_start; proc->decoder_thread_available = 0; char threadname[256]; sprintf(threadname,"UE_thread_dlsch_td_%d", proc->sub_frame_start); cpu_set_t cpuset; CPU_ZERO(&cpuset); if ( (proc->sub_frame_start+1)%RX_NB_TH == 0 && threads.dlsch_td_one != -1 ) CPU_SET(threads.dlsch_td_one, &cpuset); if ( (proc->sub_frame_start+1)%RX_NB_TH == 1 && threads.dlsch_td_two != -1 ) CPU_SET(threads.dlsch_td_two, &cpuset); if ( (proc->sub_frame_start+1)%RX_NB_TH == 2 && threads.dlsch_td_three != -1 ) CPU_SET(threads.dlsch_td_three, &cpuset); #if UE_TIMING_TRACE time_stats_t *dlsch_rate_unmatching_stats=&phy_vars_ue->dlsch_rate_unmatching_stats; time_stats_t *dlsch_turbo_decoding_stats=&phy_vars_ue->dlsch_turbo_decoding_stats; time_stats_t *dlsch_deinterleaving_stats=&phy_vars_ue->dlsch_deinterleaving_stats; #endif uint32_t A,E; uint32_t G; uint32_t ret,offset; // short dummy_w[MAX_NUM_DLSCH_SEGMENTS][3*(8448+64)]; uint32_t r,r_offset=0,Kr,Kr_bytes,err_flag=0,K_bytes_F; uint8_t crc_type; uint8_t C,Cprime; uint8_t Qm; uint8_t Nl; //uint32_t Er; init_thread(900000,1000000 , FIFO_PRIORITY-1, &cpuset, threadname); while (!oai_exit) { //proc->decoder_thread_available = 1; if (pthread_mutex_lock(&proc->mutex_dlsch_td) != 0) { LOG_E( PHY, "[SCHED][UE] error locking mutex for UE dlsch td\n" ); exit_fun("nothing to add"); } while (proc->instance_cnt_dlsch_td < 0) { // most of the time, the thread is waiting here pthread_cond_wait( &proc->cond_dlsch_td, &proc->mutex_dlsch_td ); } if (pthread_mutex_unlock(&proc->mutex_dlsch_td) != 0) { LOG_E( PHY, "[SCHED][UE] error unlocking mutex for UE dlsch_td \n" ); exit_fun("nothing to add"); } uint32_t wait = 0; while(proc->decoder_main_available == 0) { usleep(1); wait++; } //proc->decoder_thread_available = 0; //PHY_VARS_NR_UE *phy_vars_ue = tdp->UE; int eNB_id = proc->eNB_id; int harq_pid = proc->harq_pid; llr8_flag1 = proc->llr8_flag; //r_offset = proc->Er; //UE_rxtx_proc_t *proc = tdp->proc; int frame = proc->frame_rx; int subframe = proc->nr_tti_rx; NR_UE_DLSCH_t *dlsch = phy_vars_ue->dlsch[phy_vars_ue->current_thread_id[subframe]][eNB_id][0]; NR_DL_UE_HARQ_t *harq_process = dlsch->harq_processes[harq_pid]; short *dlsch_llr = phy_vars_ue->pdsch_vars[phy_vars_ue->current_thread_id[subframe]][eNB_id]->llr[0]; //printf("2thread0 llr flag %d tdp flag %d\n",llr8_flag1, tdp->llr8_flag); p_nrLDPC_procBuf = harq_process->p_nrLDPC_procBuf[1]; /* if (nb_rb > frame_parms->N_RB_DL) { printf("dlsch_decoding.c: Illegal nb_rb %d\n",nb_rb); return(max_ldpc_iterations); }*/ /*harq_pid = dlsch->current_harq_pid[phy_vars_ue->current_thread_id[subframe]]; if (harq_pid >= 8) { printf("dlsch_decoding.c: Illegal harq_pid %d\n",harq_pid); return(max_ldpc_iterations); } */ nb_rb = harq_process->nb_rb; harq_process->trials[harq_process->round]++; harq_process->TBS = nr_compute_tbs(harq_process->mcs,nb_rb,nb_symb_sch,nb_re_dmrs,length_dmrs, harq_process->Nl); A = harq_process->TBS; //2072 for QPSK 1/3 ret = dlsch->max_ldpc_iterations; harq_process->G = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs, harq_process->Qm,harq_process->Nl); G = harq_process->G; if (harq_process->round == 0) { // This is a new packet, so compute quantities regarding segmentation harq_process->B = A+24; nr_segmentation(NULL, NULL, harq_process->B, &harq_process->C, &harq_process->K, &harq_process->Z, &harq_process->F); p_decParams->Z = harq_process->Z; } kb = harq_process->K/harq_process->Z; if ( kb==22){ p_decParams->BG = 1; p_decParams->R = 13; kc = 68; } else{ p_decParams->BG = 2; p_decParams->R = 13; kc = 52; } p_decParams->numMaxIter = 2; Kr = p_decParams->Z*kb; p_decParams->outMode= 0; /* else { printf("dlsch_decoding.c: Ndi>0 not checked yet!!\n"); return(max_ldpc_iterations); } */ err_flag = 0; //r_offset = 0; /* unsigned char bw_scaling =1; switch (frame_parms->N_RB_DL) { case 106: bw_scaling =2; break; default: bw_scaling =1; break; } if (harq_process->C > MAX_NUM_DLSCH_SEGMENTS/bw_scaling) { LOG_E(PHY,"Illegal harq_process->C %d > %d\n",harq_process->C,MAX_NUM_DLSCH_SEGMENTS/bw_scaling); return((1+dlsch->max_ldpc_iterations)); }*/ #ifdef DEBUG_DLSCH_DECODING printf("Segmentation: C %d, Cminus %d, Kminus %d, Kplus %d\n",harq_process->C,harq_process->Cminus,harq_process->Kminus,harq_process->Kplus); #endif opp_enabled=1; Qm= harq_process->Qm; Nl=harq_process->Nl; //r_thread = harq_process->C/2-1; C= harq_process->C; Cprime = C; //assume CBGTI not present if (r <= Cprime - ((G/(Nl*Qm))%Cprime) - 1) r_offset = Nl*Qm*(G/(Nl*Qm*Cprime)); else r_offset = Nl*Qm*((G/(Nl*Qm*Cprime))+1); // printf("thread0 r_offset %d\n",r_offset); //for (r=(harq_process->C/2); r<harq_process->C; r++) { r=1; //(harq_process->C/2); Kr = harq_process->K; Kr_bytes = Kr>>3; K_bytes_F = Kr_bytes-(harq_process->F>>3); Tbslbrm = nr_compute_tbs(28,nb_rb,frame_parms->symbols_per_slot,0,0, harq_process->Nl); E = nr_get_E(G, harq_process->C, harq_process->Qm, harq_process->Nl, r); #if UE_TIMING_TRACE start_meas(dlsch_deinterleaving_stats); #endif nr_deinterleaving_ldpc(E, harq_process->Qm, harq_process->w[r], dlsch_llr+r_offset); //for (int i =0; i<16; i++) // printf("rx output deinterleaving w[%d]= %d r_offset %d\n", i,harq_process->w[r][i], r_offset); #if UE_TIMING_TRACE stop_meas(dlsch_deinterleaving_stats); #endif #if UE_TIMING_TRACE start_meas(dlsch_rate_unmatching_stats); #endif #ifdef DEBUG_DLSCH_DECODING LOG_D(PHY,"HARQ_PID %d Rate Matching Segment %d (coded bits %d,unpunctured/repeated bits %d, TBS %d, mod_order %d, nb_rb %d, Nl %d, rv %d, round %d)...\n", harq_pid,r, G, Kr*3, harq_process->TBS, harq_process->Qm, harq_process->nb_rb, harq_process->Nl, harq_process->rvidx, harq_process->round); #endif if (nr_rate_matching_ldpc_rx(Ilbrm, Tbslbrm, p_decParams->BG, p_decParams->Z, harq_process->d[r], harq_process->w[r], harq_process->C, harq_process->rvidx, (harq_process->round==0)?1:0, E)==-1) { #if UE_TIMING_TRACE stop_meas(dlsch_rate_unmatching_stats); #endif LOG_E(PHY,"dlsch_decoding.c: Problem in rate_matching\n"); //return(dlsch->max_ldpc_iterations); } else { #if UE_TIMING_TRACE stop_meas(dlsch_rate_unmatching_stats); #endif } //for (int i =0; i<16; i++) // printf("rx output ratematching d[%d]= %d r_offset %d\n", i,harq_process->d[r][i], r_offset); //r_offset += E; #ifdef DEBUG_DLSCH_DECODING if (r==0) { write_output("decoder_llr.m","decllr",dlsch_llr,G,1,0); write_output("decoder_in.m","dec",&harq_process->d[0][0],(3*8*Kr_bytes)+12,1,0); } printf("decoder input(segment %d) :",r); int i; for (i=0;i<(3*8*Kr_bytes)+12;i++) printf("%d : %d\n",i,harq_process->d[r][i]); printf("\n"); #endif // printf("Clearing c, %p\n",harq_process->c[r]); memset(harq_process->c[r],0,Kr_bytes); // printf("done\n"); if (harq_process->C == 1) crc_type = CRC24_A; else crc_type = CRC24_B; #if 1 if (err_flag == 0) { /* LOG_I(PHY, "turbo algo Kr=%d cb_cnt=%d C=%d nbRB=%d crc_type %d TBSInput=%d TBSHarq=%d TBSplus24=%d mcs=%d Qm=%d RIV=%d round=%d maxIter %d\n", Kr,r,harq_process->C,harq_process->nb_rb,crc_type,A,harq_process->TBS, harq_process->B,harq_process->mcs,harq_process->Qm,harq_process->rvidx,harq_process->round,dlsch->max_ldpc_iterations); */ if (llr8_flag1) { AssertFatal (Kr >= 256, "turbo algo issue Kr=%d cb_cnt=%d C=%d nbRB=%d TBSInput=%d TBSHarq=%d TBSplus24=%d mcs=%d Qm=%d RIV=%d round=%d\n", Kr,r,harq_process->C,harq_process->nb_rb,A,harq_process->TBS,harq_process->B,harq_process->mcs,harq_process->Qm,harq_process->rvidx,harq_process->round); } #if UE_TIMING_TRACE start_meas(dlsch_turbo_decoding_stats); #endif // LOG_D(PHY,"AbsSubframe %d.%d Start turbo segment %d/%d \n",frame%1024,subframe,r,harq_process->C-1); for (int cnt =0; cnt < (kc-2)*p_decParams->Z; cnt++){ inv_d[cnt] = (1)*harq_process->d[r][cnt]; } memset(pv,0,2*p_decParams->Z*sizeof(int16_t)); //memset(pl,0,2*p_decParams->Z*sizeof(int8_t)); memset((pv+K_bytes_F),127,harq_process->F*sizeof(int16_t)); for (i=((2*p_decParams->Z)>>3), j = 0; i < K_bytes_F+((2*p_decParams->Z)>>3); i++, j++) { pv[i]= _mm_loadu_si128((__m128i*)(&inv_d[8*j])); } for (i=Kr_bytes+((2*p_decParams->Z)>>3),j=Kr_bytes; i < ((kc*p_decParams->Z)>>3); i++, j++) { pv[i]= _mm_loadu_si128((__m128i*)(&inv_d[8*j])); } for (i=0, j=0; j < ((kc*p_decParams->Z)>>4); i+=2, j++) { pl[j] = _mm_packs_epi16(pv[i],pv[i+1]); } no_iteration_ldpc = nrLDPC_decoder(p_decParams, (int8_t*)&pl[0], llrProcBuf, p_nrLDPC_procBuf, p_procTime); if (no_iteration_ldpc > 10) printf("Error number of iteration LPDC %d\n", no_iteration_ldpc); //else //printf("OK number of iteration LPDC %d\n", no_iteration_ldpc); for (int m=0; m < Kr>>3; m ++) { harq_process->c[r][m]= (uint8_t) llrProcBuf[m]; } /*for (int u=0; u < Kr>>3; u ++) { ullrProcBuf[u]= (uint8_t) llrProcBuf[u]; } printf("output unsigned ullrProcBuf \n"); for (int j=0; j < Kr>>3; j ++) { printf(" %d \n", ullrProcBuf[j]); } printf(" \n");*/ #ifdef DEBUG_DLSCH_DECODING for (int k=0;k<2;k++) printf("segment 1 output decoder [%d] = 0x%02x \n", k, harq_process->c[r][k]); #endif #if UE_TIMING_TRACE stop_meas(dlsch_turbo_decoding_stats); #endif } if ((err_flag == 0) && (ret>=(1+dlsch->max_ldpc_iterations))) {// a Code segment is in error so break; // LOG_D(PHY,"AbsSubframe %d.%d CRC failed, segment %d/%d \n",frame%1024,subframe,r,harq_process->C-1); err_flag = 1; } //} /*int32_t frame_rx_prev = frame; int32_t subframe_rx_prev = subframe - 1; if (subframe_rx_prev < 0) { frame_rx_prev--; subframe_rx_prev += 10; } frame_rx_prev = frame_rx_prev%1024;*/ #if 0 if (err_flag == 1) { //#if UE_DEBUG_TRACE LOG_I(PHY,"[UE %d] THREAD 0 DLSCH: Setting NAK for SFN/SF %d/%d (pid %d, status %d, round %d, TBS %d, mcs %d) Kr %d r %d harq_process->round %d\n", phy_vars_ue->Mod_id, frame, subframe, harq_pid,harq_process->status, harq_process->round,harq_process->TBS,harq_process->mcs,Kr,r,harq_process->round); //#endif dlsch->harq_ack[subframe].ack = 0; dlsch->harq_ack[subframe].harq_id = harq_pid; dlsch->harq_ack[subframe].send_harq_status = 1; harq_process->errors[harq_process->round]++; harq_process->round++; // printf("Rate: [UE %d] DLSCH: Setting NACK for subframe %d (pid %d, round %d)\n",phy_vars_ue->Mod_id,subframe,harq_pid,harq_process->round); if (harq_process->round >= dlsch->Mdlharq) { harq_process->status = SCH_IDLE; harq_process->round = 0; } /* if(is_crnti) { LOG_D(PHY,"[UE %d] DLSCH: Setting NACK for subframe %d (pid %d, pid status %d, round %d/Max %d, TBS %d)\n", phy_vars_ue->Mod_id,subframe,harq_pid,harq_process->status,harq_process->round,dlsch->Mdlharq,harq_process->TBS); }*/ //return((1+dlsch->max_ldpc_iterations)); } else { #if UE_DEBUG_TRACE LOG_I(PHY,"[UE %d] THREAD 0 DLSCH: Setting ACK for subframe %d TBS %d mcs %d nb_rb %d\n", phy_vars_ue->Mod_id,subframe,harq_process->TBS,harq_process->mcs,harq_process->nb_rb); #endif harq_process->status = SCH_IDLE; harq_process->round = 0; dlsch->harq_ack[subframe].ack = 1; dlsch->harq_ack[subframe].harq_id = harq_pid; dlsch->harq_ack[subframe].send_harq_status = 1; //LOG_I(PHY,"[UE %d] DLSCH: Setting ACK for SFN/SF %d/%d (pid %d, status %d, round %d, TBS %d, mcs %d)\n", // phy_vars_ue->Mod_id, frame, subframe, harq_pid, harq_process->status, harq_process->round,harq_process->TBS,harq_process->mcs); /* if(is_crnti) { LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for subframe %d (pid %d, round %d, TBS %d)\n",phy_vars_ue->Mod_id,subframe,harq_pid,harq_process->round,harq_process->TBS); } LOG_D(PHY,"[UE %d] DLSCH: Setting ACK for subframe %d (pid %d, round %d)\n",phy_vars_ue->Mod_id,subframe,harq_pid,harq_process->round); }*/ // Reassembly of Transport block here offset = 0; /* printf("harq_pid %d\n",harq_pid); printf("F %d, Fbytes %d\n",harq_process->F,harq_process->F>>3); printf("C %d\n",harq_process->C); */ for (r=0; r<harq_process->C; r++) { if (r<harq_process->Cminus) Kr = harq_process->Kminus; else Kr = harq_process->Kplus; Kr_bytes = Kr>>3; // printf("Segment %d : Kr= %d bytes\n",r,Kr_bytes); if (r==0) { memcpy(harq_process->b, &harq_process->c[0][(harq_process->F>>3)], Kr_bytes - (harq_process->F>>3)- ((harq_process->C>1)?3:0)); offset = Kr_bytes - (harq_process->F>>3) - ((harq_process->C>1)?3:0); // printf("copied %d bytes to b sequence (harq_pid %d)\n", // Kr_bytes - (harq_process->F>>3),harq_pid); // printf("b[0] = %x,c[%d] = %x\n", // harq_process->b[0], // harq_process->F>>3, // harq_process->c[0][(harq_process->F>>3)]); } else { memcpy(harq_process->b+offset, harq_process->c[r], Kr_bytes- ((harq_process->C>1)?3:0)); offset += (Kr_bytes - ((harq_process->C>1)?3:0)); } } dlsch->last_iteration_cnt = ret; //return(ret); } #endif proc->decoder_thread_available = 1; //proc->decoder_main_available = 0; if (pthread_mutex_lock(&proc->mutex_dlsch_td) != 0) { LOG_E( PHY, "[SCHED][UE] error locking mutex for UE RXTX\n" ); exit_fun("noting to add"); } proc->instance_cnt_dlsch_td--; if (pthread_mutex_unlock(&proc->mutex_dlsch_td) != 0) { LOG_E( PHY, "[SCHED][UE] error unlocking mutex for UE td1\n" ); exit_fun("noting to add"); } } // thread finished free(arg); return &UE_dlsch_td_retval; } #endif #ifdef UE_DLSCH_PARALLELISATION #define FIFO_PRIORITY 39 void *nr_dlsch_decoding_2thread1(void *arg) { static __thread int UE_dlsch_td_retval1; struct nr_rxtx_thread_data *rtd = arg; UE_nr_rxtx_proc_t *proc = rtd->proc; PHY_VARS_NR_UE *phy_vars_ue = rtd->UE; NR_DL_FRAME_PARMS *frame_parms = &phy_vars_ue->frame_parms; int llr8_flag1; int32_t no_iteration_ldpc; t_nrLDPC_dec_params decParams; t_nrLDPC_dec_params* p_decParams = &decParams; t_nrLDPC_time_stats procTime; t_nrLDPC_time_stats* p_procTime =&procTime ; t_nrLDPC_procBuf* p_nrLDPC_procBuf; int8_t llrProcBuf[OAI_LDPC_MAX_NUM_LLR] __attribute__ ((aligned(32))); int16_t z [68*384]; int8_t l [68*384]; //__m128i l; int16_t inv_d [68*384]; //int16_t *p_invd =&inv_d; uint8_t kb, kc; uint8_t Ilbrm = 0; uint32_t Tbslbrm = 950984; uint16_t nb_rb = 30; //to update uint16_t nb_symb_sch = 12; uint8_t nb_re_dmrs = 6; uint16_t length_dmrs = 1; uint32_t i,j; //uint32_t k; __m128i *pv = (__m128i*)&z; __m128i *pl = (__m128i*)&l; proc->instance_cnt_dlsch_td1=-1; proc->nr_tti_rx=proc->sub_frame_start; printf("start thread 1\n"); proc->decoder_thread_available1 = 0; char threadname[256]; sprintf(threadname,"UE_thread_dlsch_td1_%d", proc->sub_frame_start); cpu_set_t cpuset; CPU_ZERO(&cpuset); if ( (proc->sub_frame_start+1)%RX_NB_TH == 0 && threads.dlsch_td_one != -1 ) CPU_SET(threads.dlsch_td_one, &cpuset); if ( (proc->sub_frame_start+1)%RX_NB_TH == 1 && threads.dlsch_td_two != -1 ) CPU_SET(threads.dlsch_td_two, &cpuset); if ( (proc->sub_frame_start+1)%RX_NB_TH == 2 && threads.dlsch_td_three != -1 ) CPU_SET(threads.dlsch_td_three, &cpuset); #if UE_TIMING_TRACE time_stats_t *dlsch_rate_unmatching_stats=&phy_vars_ue->dlsch_rate_unmatching_stats; time_stats_t *dlsch_turbo_decoding_stats=&phy_vars_ue->dlsch_turbo_decoding_stats; time_stats_t *dlsch_deinterleaving_stats=&phy_vars_ue->dlsch_deinterleaving_stats; #endif uint32_t A,E; uint32_t G; uint32_t ret,offset; uint32_t r,r_offset=0,Kr,Kr_bytes,err_flag=0,K_bytes_F; uint8_t crc_type; uint8_t C,Cprime; uint8_t Qm; uint8_t Nl; //uint32_t Er; init_thread(900000,1000000 , FIFO_PRIORITY-1, &cpuset, threadname); printf("2thread1 oai_exit %d\n", oai_exit); while (!oai_exit) { if (pthread_mutex_lock(&proc->mutex_dlsch_td1) != 0) { LOG_E( PHY, "[SCHED][UE] error locking mutex for UE dlsch td\n" ); exit_fun("nothing to add"); } while (proc->instance_cnt_dlsch_td1 < 0) { // most of the time, the thread is waiting here pthread_cond_wait( &proc->cond_dlsch_td1, &proc->mutex_dlsch_td1 ); } if (pthread_mutex_unlock(&proc->mutex_dlsch_td1) != 0) { LOG_E( PHY, "[SCHED][UE] error unlocking mutex for UE dlsch_td \n" ); exit_fun("nothing to add"); } //printf("2thread1 main available %d\n", proc->decoder_main_available); uint32_t wait = 0; while(proc->decoder_main_available == 0) { usleep(1); wait++; } //proc->decoder_thread_available1 = 0; //PHY_VARS_NR_UE *phy_vars_ue = tdp->UE; int eNB_id = proc->eNB_id; int harq_pid = proc->harq_pid; llr8_flag1 = proc->llr8_flag; //r_offset = proc->Er; //UE_rxtx_proc_t *proc = tdp->proc; int frame = proc->frame_rx; int subframe = proc->nr_tti_rx; NR_UE_DLSCH_t *dlsch = phy_vars_ue->dlsch[phy_vars_ue->current_thread_id[subframe]][eNB_id][0]; NR_DL_UE_HARQ_t *harq_process = dlsch->harq_processes[harq_pid]; short *dlsch_llr = phy_vars_ue->pdsch_vars[phy_vars_ue->current_thread_id[subframe]][eNB_id]->llr[0]; //printf("2thread0 llr flag %d tdp flag %d\n",llr8_flag1, tdp->llr8_flag); //printf("2thread1 nr_tti_tx %d subframe %d SF thread id %d r_offset %d\n", proc->nr_tti_rx, subframe, phy_vars_ue->current_thread_id[subframe], r_offset); p_nrLDPC_procBuf = harq_process->p_nrLDPC_procBuf[2]; /* if (nb_rb > frame_parms->N_RB_DL) { printf("dlsch_decoding.c: Illegal nb_rb %d\n",nb_rb); return(max_ldpc_iterations); }*/ /*harq_pid = dlsch->current_harq_pid[phy_vars_ue->current_thread_id[subframe]]; if (harq_pid >= 8) { printf("dlsch_decoding.c: Illegal harq_pid %d\n",harq_pid); return(max_ldpc_iterations); } */ nb_rb = harq_process->nb_rb; harq_process->trials[harq_process->round]++; harq_process->TBS = nr_compute_tbs(harq_process->mcs,nb_rb,nb_symb_sch,nb_re_dmrs,length_dmrs, harq_process->Nl); A = harq_process->TBS; //2072 for QPSK 1/3 ret = dlsch->max_ldpc_iterations; harq_process->G = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs, harq_process->Qm,harq_process->Nl); G = harq_process->G; //get_G(frame_parms,nb_rb,dlsch->rb_alloc,mod_order,num_pdcch_symbols,phy_vars_ue->frame,subframe); //printf("DLSCH Decoding, A %d harq_pid %d G %d\n",A, harq_pid,harq_process->G); if (harq_process->round == 0) { // This is a new packet, so compute quantities regarding segmentation harq_process->B = A+24; nr_segmentation(NULL, NULL, harq_process->B, &harq_process->C, &harq_process->K, &harq_process->Z, &harq_process->F); p_decParams->Z = harq_process->Z; } kb = harq_process->K/harq_process->Z; if ( kb==22){ p_decParams->BG = 1; p_decParams->R = 89; kc = 68; } else{ p_decParams->BG = 2; p_decParams->R = 13; kc = 52; } p_decParams->numMaxIter = 2; Kr = p_decParams->Z*kb; p_decParams->outMode= 0; /* else { printf("dlsch_decoding.c: Ndi>0 not checked yet!!\n"); return(max_ldpc_iterations); } */ err_flag = 0; //r_offset = 0; /* unsigned char bw_scaling =1; switch (frame_parms->N_RB_DL) { case 106: bw_scaling =2; break; default: bw_scaling =1; break; } if (harq_process->C > MAX_NUM_DLSCH_SEGMENTS/bw_scaling) { LOG_E(PHY,"Illegal harq_process->C %d > %d\n",harq_process->C,MAX_NUM_DLSCH_SEGMENTS/bw_scaling); return((1+dlsch->max_ldpc_iterations)); }*/ #ifdef DEBUG_DLSCH_DECODING printf("Segmentation: C %d, Cminus %d, Kminus %d, Kplus %d\n",harq_process->C,harq_process->Cminus,harq_process->Kminus,harq_process->Kplus); #endif opp_enabled=1; Qm= harq_process->Qm; Nl=harq_process->Nl; //r_thread = harq_process->C/2-1; C= harq_process->C; Cprime = C; //assume CBGTI not present if (r <= Cprime - ((G/(Nl*Qm))%Cprime) - 1) r_offset = Nl*Qm*(G/(Nl*Qm*Cprime)); else r_offset = Nl*Qm*((G/(Nl*Qm*Cprime))+1); //printf("sub thread r_offset %d\n", r_offset); //for (r=(harq_process->C/2); r<harq_process->C; r++) { r=2; //(harq_process->C/2); r_offset = r*r_offset; //printf("thread1 r=%d r_offset %d \n",r, r_offset); Kr = harq_process->K; Kr_bytes = Kr>>3; K_bytes_F = Kr_bytes-(harq_process->F>>3); Tbslbrm = nr_compute_tbs(28,nb_rb,frame_parms->symbols_per_slot,0,0, harq_process->Nl); E = nr_get_E(G, harq_process->C, harq_process->Qm, harq_process->Nl, r); /* printf("Subblock deinterleaving, d %p w %p\n", harq_process->d[r], harq_process->w); */ #if UE_TIMING_TRACE start_meas(dlsch_deinterleaving_stats); #endif nr_deinterleaving_ldpc(E, harq_process->Qm, harq_process->w[r], dlsch_llr+r_offset); //for (int i =0; i<16; i++) // printf("rx output deinterleaving w[%d]= %d r_offset %d\n", i,harq_process->w[r][i], r_offset); #if UE_TIMING_TRACE stop_meas(dlsch_deinterleaving_stats); #endif #if UE_TIMING_TRACE start_meas(dlsch_rate_unmatching_stats); #endif #ifdef DEBUG_DLSCH_DECODING LOG_D(PHY,"HARQ_PID %d Rate Matching Segment %d (coded bits %d,unpunctured/repeated bits %d, TBS %d, mod_order %d, nb_rb %d, Nl %d, rv %d, round %d)...\n", harq_pid,r, G, Kr*3, harq_process->TBS, harq_process->Qm, harq_process->nb_rb, harq_process->Nl, harq_process->rvidx, harq_process->round); #endif if (nr_rate_matching_ldpc_rx(Ilbrm, Tbslbrm, p_decParams->BG, p_decParams->Z, harq_process->d[r], harq_process->w[r], harq_process->C, harq_process->rvidx, (harq_process->round==0)?1:0, E)==-1) { #if UE_TIMING_TRACE stop_meas(dlsch_rate_unmatching_stats); #endif LOG_E(PHY,"dlsch_decoding.c: Problem in rate_matching\n"); //return(dlsch->max_ldpc_iterations); } else { #if UE_TIMING_TRACE stop_meas(dlsch_rate_unmatching_stats); #endif } //for (int i =0; i<16; i++) // printf("rx output ratematching d[%d]= %d r_offset %d\n", i,harq_process->d[r][i], r_offset); //r_offset += E; #ifdef DEBUG_DLSCH_DECODING if (r==0) { write_output("decoder_llr.m","decllr",dlsch_llr,G,1,0); write_output("decoder_in.m","dec",&harq_process->d[0][0],(3*8*Kr_bytes)+12,1,0); } printf("decoder input(segment %d) :",r); int i; for (i=0;i<(3*8*Kr_bytes)+12;i++) printf("%d : %d\n",i,harq_process->d[r][i]); printf("\n"); #endif // printf("Clearing c, %p\n",harq_process->c[r]); memset(harq_process->c[r],0,Kr_bytes); // printf("done\n"); if (harq_process->C == 1) crc_type = CRC24_A; else crc_type = CRC24_B; if (err_flag == 0) { /* LOG_I(PHY, "turbo algo Kr=%d cb_cnt=%d C=%d nbRB=%d crc_type %d TBSInput=%d TBSHarq=%d TBSplus24=%d mcs=%d Qm=%d RIV=%d round=%d maxIter %d\n", Kr,r,harq_process->C,harq_process->nb_rb,crc_type,A,harq_process->TBS, harq_process->B,harq_process->mcs,harq_process->Qm,harq_process->rvidx,harq_process->round,dlsch->max_ldpc_iterations); */ if (llr8_flag1) { AssertFatal (Kr >= 256, "turbo algo issue Kr=%d cb_cnt=%d C=%d nbRB=%d TBSInput=%d TBSHarq=%d TBSplus24=%d mcs=%d Qm=%d RIV=%d round=%d\n", Kr,r,harq_process->C,harq_process->nb_rb,A,harq_process->TBS,harq_process->B,harq_process->mcs,harq_process->Qm,harq_process->rvidx,harq_process->round); } #if UE_TIMING_TRACE start_meas(dlsch_turbo_decoding_stats); #endif // LOG_D(PHY,"AbsSubframe %d.%d Start turbo segment %d/%d \n",frame%1024,subframe,r,harq_process->C-1); memset(pv,0,2*p_decParams->Z*sizeof(int16_t)); //memset(pl,0,2*p_decParams->Z*sizeof(int8_t)); memset((pv+K_bytes_F),127,harq_process->F*sizeof(int16_t)); for (i=((2*p_decParams->Z)>>3), j = 0; i < K_bytes_F+((2*p_decParams->Z)>>3); i++, j++) { pv[i]= _mm_loadu_si128((__m128i*)(&inv_d[8*j])); } for (i=Kr_bytes+((2*p_decParams->Z)>>3),j=Kr_bytes; i < ((kc*p_decParams->Z)>>3); i++, j++) { pv[i]= _mm_loadu_si128((__m128i*)(&inv_d[8*j])); } for (i=0, j=0; j < ((kc*p_decParams->Z)>>4); i+=2, j++) { pl[j] = _mm_packs_epi16(pv[i],pv[i+1]); } no_iteration_ldpc = nrLDPC_decoder(p_decParams, (int8_t*)&pl[0], llrProcBuf, p_nrLDPC_procBuf, p_procTime); if (no_iteration_ldpc > 10) printf("Error number of iteration LPDC %d\n", no_iteration_ldpc); //else // printf("OK number of iteration LPDC %d\n", no_iteration_ldpc); for (int m=0; m < Kr>>3; m ++) { harq_process->c[r][m]= (uint8_t) llrProcBuf[m]; } /*for (int u=0; u < Kr>>3; u ++) { ullrProcBuf[u]= (uint8_t) llrProcBuf[u]; } printf("output unsigned ullrProcBuf \n"); for (int j=0; j < Kr>>3; j ++) { printf(" %d \n", ullrProcBuf[j]); } printf(" \n");*/ #endif //printf("output channel decoder %d %d %d %d %d \n", harq_process->c[r][0], harq_process->c[r][1], harq_process->c[r][2],harq_process->c[r][3], harq_process->c[r][4]); //printf("output decoder %d %d %d %d %d \n", harq_process->c[r][0], harq_process->c[r][1], harq_process->c[r][2],harq_process->c[r][3], harq_process->c[r][4]); #if UE_TIMING_TRACE stop_meas(dlsch_turbo_decoding_stats); #endif } if ((err_flag == 0) && (ret>=(1+dlsch->max_ldpc_iterations))) {// a Code segment is in error so break; // LOG_D(PHY,"AbsSubframe %d.%d CRC failed, segment %d/%d \n",frame%1024,subframe,r,harq_process->C-1); err_flag = 1; } //} /*int32_t frame_rx_prev = frame; int32_t subframe_rx_prev = subframe - 1; if (subframe_rx_prev < 0) { frame_rx_prev--; subframe_rx_prev += 10; } frame_rx_prev = frame_rx_prev%1024;*/ proc->decoder_thread_available1 = 1; //proc->decoder_main_available = 0; //printf("2thread1 proc->instance_cnt_dlsch_td1 %d\n", proc->instance_cnt_dlsch_td1); if (pthread_mutex_lock(&proc->mutex_dlsch_td1) != 0) { LOG_E( PHY, "[SCHED][UE] error locking mutex for UE RXTX\n" ); exit_fun("noting to add"); } proc->instance_cnt_dlsch_td1--; if (pthread_mutex_unlock(&proc->mutex_dlsch_td1) != 0) { LOG_E( PHY, "[SCHED][UE] error unlocking mutex for UE td1\n" ); exit_fun("noting to add"); } //printf("end 2thread1 proc->instance_cnt_dlsch_td1 %d\n", proc->instance_cnt_dlsch_td1); } //printf("after 2thread1 after oai exit proc->instance_cnt_dlsch_td %d\n", proc->instance_cnt_dlsch_td1); // thread finished free(arg); return &UE_dlsch_td_retval1; } #endif