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openairinterface5g/openair1/PHY/LTE_TRANSPORT/dlsch_coding.c
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/*
* 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/LTE_TRANSPORT/dlsch_coding.c
* \brief Top-level routines for implementing 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_eNB.h"
#include "PHY/phy_extern.h"
#include "PHY/CODING/coding_defs.h"
#include "PHY/CODING/coding_extern.h"
#include "PHY/CODING/lte_interleaver_inline.h"
#include "PHY/LTE_TRANSPORT/transport_eNB.h"
#include "PHY/LTE_TRANSPORT/transport_proto.h"
#include "SCHED/sched_eNB.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "common/utils/LOG/log.h"
#include "targets/RT/USER/lte-softmodem.h"
#include <syscall.h>
//#define DEBUG_DLSCH_CODING
//#define DEBUG_DLSCH_FREE 1
/*
#define is_not_pilot(pilots,first_pilot,re) (pilots==0) || \
((pilots==1)&&(first_pilot==1)&&(((re>2)&&(re<6))||((re>8)&&(re<12)))) || \
((pilots==1)&&(first_pilot==0)&&(((re<3))||((re>5)&&(re<9)))) \
*/
#define is_not_pilot(pilots,first_pilot,re) (1)
/*extern void thread_top_init(char *thread_name,
int affinity,
uint64_t runtime,
uint64_t deadline,
uint64_t period);*/
//extern WORKER_CONF_t get_thread_worker_conf(void);
#include "executables/thread-common.h"
extern volatile int oai_exit;
void free_eNB_dlsch(LTE_eNB_DLSCH_t *dlsch) {
int i, r, aa, layer;
if (dlsch) {
for (layer=0; layer<4; layer++) {
for (aa=0; aa<64; aa++) free16(dlsch->ue_spec_bf_weights[layer][aa], OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES*sizeof(int32_t));
free16(dlsch->ue_spec_bf_weights[layer], 64*sizeof(int32_t *));
}
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_DLSCH_SEGMENTS; r++) {
if (dlsch->harq_processes[i]->c[r]) {
free16(dlsch->harq_processes[i]->c[r],((r==0)?8:0) + 3+768);
dlsch->harq_processes[i]->c[r] = NULL;
}
if (dlsch->harq_processes[i]->d[r]) {
free16(dlsch->harq_processes[i]->d[r],(96+12+3+(3*6144)));
dlsch->harq_processes[i]->d[r] = NULL;
}
}
free16(dlsch->harq_processes[i],sizeof(LTE_DL_eNB_HARQ_t));
dlsch->harq_processes[i] = NULL;
}
}
free16(dlsch,sizeof(LTE_eNB_DLSCH_t));
}
}
LTE_eNB_DLSCH_t *new_eNB_dlsch(unsigned char Kmimo,unsigned char Mdlharq,uint32_t Nsoft,unsigned char N_RB_DL, uint8_t abstraction_flag, LTE_DL_FRAME_PARMS *frame_parms) {
LTE_eNB_DLSCH_t *dlsch;
unsigned char exit_flag = 0,i,j,r,aa,layer;
int re;
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 = (LTE_eNB_DLSCH_t *)malloc16(sizeof(LTE_eNB_DLSCH_t));
if (dlsch) {
bzero(dlsch,sizeof(LTE_eNB_DLSCH_t));
dlsch->Kmimo = Kmimo;
dlsch->Mdlharq = Mdlharq;
dlsch->Mlimit = 8;
dlsch->Nsoft = Nsoft;
for (layer=0; layer<4; layer++) {
dlsch->ue_spec_bf_weights[layer] = (int32_t **)malloc16(64*sizeof(int32_t *));
for (aa=0; aa<64; aa++) {
dlsch->ue_spec_bf_weights[layer][aa] = (int32_t *)malloc16(OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES*sizeof(int32_t));
for (re=0; re<OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES; re++) {
dlsch->ue_spec_bf_weights[layer][aa][re] = 0x00007fff;
}
}
}
// NOTE: THIS HAS TO BE REVISED FOR RU, commenting to remove memory leak !!!!!
/*
dlsch->calib_dl_ch_estimates = (int32_t**)malloc16(frame_parms->nb_antennas_tx*sizeof(int32_t*));
for (aa=0; aa<frame_parms->nb_antennas_tx; aa++) {
dlsch->calib_dl_ch_estimates[aa] = (int32_t *)malloc16(OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES*sizeof(int32_t));
}*/
for (i=0; i<20; i++)
dlsch->harq_ids[i/10][i%10] = Mdlharq;
for (i=0; i<Mdlharq; i++) {
dlsch->harq_processes[i] = (LTE_DL_eNB_HARQ_t *)malloc16(sizeof(LTE_DL_eNB_HARQ_t));
LOG_T(PHY, "Required mem size %d (bw scaling %d), dlsch->harq_processes[%d] %p\n",
MAX_DLSCH_PAYLOAD_BYTES/bw_scaling,bw_scaling, i,dlsch->harq_processes[i]);
if (dlsch->harq_processes[i]) {
bzero(dlsch->harq_processes[i],sizeof(LTE_DL_eNB_HARQ_t));
// dlsch->harq_processes[i]->first_tx=1;
dlsch->harq_processes[i]->b = (unsigned char *)malloc16(MAX_DLSCH_PAYLOAD_BYTES/bw_scaling);
if (dlsch->harq_processes[i]->b) {
bzero(dlsch->harq_processes[i]->b,MAX_DLSCH_PAYLOAD_BYTES/bw_scaling);
} else {
printf("Can't get b\n");
exit_flag=1;
}
if (abstraction_flag==0) {
for (r=0; r<MAX_NUM_DLSCH_SEGMENTS/bw_scaling; r++) {
// account for filler in first segment and CRCs for multiple segment case
dlsch->harq_processes[i]->c[r] = (uint8_t *)malloc16(((r==0)?8:0) + 3+ 768);
dlsch->harq_processes[i]->d[r] = (uint8_t *)malloc16((96+12+3+(3*6144)));
if (dlsch->harq_processes[i]->c[r]) {
bzero(dlsch->harq_processes[i]->c[r],((r==0)?8:0) + 3+ 768);
} else {
printf("Can't get c\n");
exit_flag=2;
}
if (dlsch->harq_processes[i]->d[r]) {
bzero(dlsch->harq_processes[i]->d[r],(96+12+3+(3*6144)));
} else {
printf("Can't get d\n");
exit_flag=2;
}
}
}
} else {
printf("Can't get harq_p %d\n",i);
exit_flag=3;
}
}
if (exit_flag==0) {
for (i=0; i<Mdlharq; i++) {
dlsch->harq_processes[i]->round=0;
for (j=0; j<96; j++)
for (r=0; r<MAX_NUM_DLSCH_SEGMENTS/bw_scaling; r++) {
// printf("dlsch->harq_processes[%d]->d[%d] %p\n",i,r,dlsch->harq_processes[i]->d[r]);
if (dlsch->harq_processes[i]->d[r])
dlsch->harq_processes[i]->d[r][j] = LTE_NULL;
}
}
return(dlsch);
}
}
LOG_D(PHY,"new_eNB_dlsch exit flag %d, size of %ld\n",
exit_flag, sizeof(LTE_eNB_DLSCH_t));
free_eNB_dlsch(dlsch);
return(NULL);
}
void clean_eNb_dlsch(LTE_eNB_DLSCH_t *dlsch) {
unsigned char Mdlharq;
unsigned char i,j,r;
if (dlsch) {
Mdlharq = dlsch->Mdlharq;
dlsch->rnti = 0;
#ifdef PHY_TX_THREAD
for (i=0; i<10; i++)
dlsch->active[i] = 0;
#else
dlsch->active = 0;
#endif
dlsch->harq_mask = 0;
for (i=0; i<20; i++)
dlsch->harq_ids[i/10][i%10] = Mdlharq;
for (i=0; i<Mdlharq; i++) {
if (dlsch->harq_processes[i]) {
// dlsch->harq_processes[i]->Ndi = 0;
dlsch->harq_processes[i]->status = 0;
dlsch->harq_processes[i]->round = 0;
for (j=0; j<96; j++)
for (r=0; r<MAX_NUM_DLSCH_SEGMENTS; r++)
if (dlsch->harq_processes[i]->d[r])
dlsch->harq_processes[i]->d[r][j] = LTE_NULL;
}
}
}
}
int dlsch_encoding_2threads0(te_params *tep) {
LTE_eNB_DLSCH_t *dlsch = tep->dlsch;
unsigned int G = tep->G;
unsigned char harq_pid = tep->harq_pid;
unsigned int total_worker = tep->total_worker;
unsigned int current_worker = tep->current_worker;
unsigned short nb_rb = dlsch->harq_processes[harq_pid]->nb_rb;
unsigned int Kr=0,Kr_bytes,r,r_offset=0;
// unsigned short m=dlsch->harq_processes[harq_pid]->mcs;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ENCODING_W, VCD_FUNCTION_IN);
if (dlsch->harq_processes[harq_pid]->round == 0) { // this is a new packet
for (r=(dlsch->harq_processes[harq_pid]->C/(total_worker+1))*current_worker; r<(dlsch->harq_processes[harq_pid]->C/(total_worker+1))*(current_worker+1); r++) {
if (r<dlsch->harq_processes[harq_pid]->Cminus)
Kr = dlsch->harq_processes[harq_pid]->Kminus;
else
Kr = dlsch->harq_processes[harq_pid]->Kplus;
Kr_bytes = Kr>>3;
encoder(dlsch->harq_processes[harq_pid]->c[r],
Kr>>3,
&dlsch->harq_processes[harq_pid]->d[r][96],
(r==0) ? dlsch->harq_processes[harq_pid]->F : 0
);
dlsch->harq_processes[harq_pid]->RTC[r] =
sub_block_interleaving_turbo(4+(Kr_bytes*8),
&dlsch->harq_processes[harq_pid]->d[r][96],
dlsch->harq_processes[harq_pid]->w[r]);
}
}
// Fill in the "e"-sequence from 36-212, V8.6 2009-03, p. 16-17 (for each "e") and concatenate the
// outputs for each code segment, see Section 5.1.5 p.20
for (r=0,r_offset=0; r<(dlsch->harq_processes[harq_pid]->C/(total_worker+1))*(current_worker+1); r++) {
if(r<(dlsch->harq_processes[harq_pid]->C/(total_worker+1))*(current_worker)) {
int Nl=dlsch->harq_processes[harq_pid]->Nl;
int Qm=dlsch->harq_processes[harq_pid]->Qm;
int C = dlsch->harq_processes[harq_pid]->C;
int Gp = G/Nl/Qm;
int GpmodC = Gp%C;
if (r < (C-(GpmodC)))
r_offset += Nl*Qm * (Gp/C);
else
r_offset += Nl*Qm * ((GpmodC==0?0:1) + (Gp/C));
} else {
r_offset += lte_rate_matching_turbo(dlsch->harq_processes[harq_pid]->RTC[r],
G, //G
dlsch->harq_processes[harq_pid]->w[r],
dlsch->harq_processes[harq_pid]->e+r_offset,
dlsch->harq_processes[harq_pid]->C, // C
dlsch->Nsoft, // Nsoft,
dlsch->Mdlharq,
dlsch->Kmimo,
dlsch->harq_processes[harq_pid]->rvidx,
dlsch->harq_processes[harq_pid]->Qm,
dlsch->harq_processes[harq_pid]->Nl,
r,
nb_rb);
// m); // r
}
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ENCODING_W, VCD_FUNCTION_OUT);
return(0);
}
void *te_thread(void *param) {
te_params *tep = (te_params *)param;
//wait_sync("te_thread");
while (!oai_exit) {
if (wait_on_condition(&tep->mutex_te,&tep->cond_te,&tep->instance_cnt_te,"te thread")<0) break;
if(oai_exit) break;
dlsch_encoding_2threads0(tep);
if (release_thread(&tep->mutex_te,&tep->instance_cnt_te,"te thread")<0) break;
if (pthread_cond_signal(&tep->cond_te) != 0) {
printf("[eNB] ERROR pthread_cond_signal for te thread exit\n");
exit_fun( "ERROR pthread_cond_signal" );
return(NULL);
}
/*if(opp_enabled == 1 && te_wakeup_stats0->p_time>50*3000){
print_meas_now(te_wakeup_stats0,"coding_wakeup",stderr);
printf("te_thread0 delay for waking up in frame_rx: %d subframe_rx: %d \n",proc->frame_rx,proc->subframe_rx);
}*/
}
return(NULL);
}
int dlsch_encoding_2threads(PHY_VARS_eNB *eNB,
unsigned char *a,
uint8_t num_pdcch_symbols,
LTE_eNB_DLSCH_t *dlsch,
int frame,
uint8_t subframe,
time_stats_t *rm_stats,
time_stats_t *te_stats,
time_stats_t *te_wait_stats,
time_stats_t *te_main_stats,
time_stats_t *te_wakeup_stats0,
time_stats_t *te_wakeup_stats1,
time_stats_t *i_stats,
int worker_num) {
//start_meas(&eNB->dlsch_turbo_encoding_preperation_stats);
LTE_DL_FRAME_PARMS *frame_parms = &eNB->frame_parms;
L1_proc_t *proc = &eNB->proc;
unsigned int G;
unsigned int crc=1;
unsigned char harq_pid = dlsch->harq_ids[frame%2][subframe];
if((harq_pid < 0) || (harq_pid >= dlsch->Mdlharq)) {
LOG_E(PHY,"dlsch_encoding_2threads illegal harq_pid %d %s:%d\n", harq_pid, __FILE__, __LINE__);
return(-1);
}
unsigned short nb_rb = dlsch->harq_processes[harq_pid]->nb_rb;
unsigned int A;
unsigned char mod_order;
unsigned int Kr=0,Kr_bytes,r,r_offset=0;
// unsigned short m=dlsch->harq_processes[harq_pid]->mcs;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ENCODING, VCD_FUNCTION_IN);
A = dlsch->harq_processes[harq_pid]->TBS; //6228
mod_order = dlsch->harq_processes[harq_pid]->Qm;
G = get_G(frame_parms,nb_rb,dlsch->harq_processes[harq_pid]->rb_alloc,mod_order,dlsch->harq_processes[harq_pid]->Nl,num_pdcch_symbols,frame,subframe,
dlsch->harq_processes[harq_pid]->mimo_mode==TM7?7:0);
if (dlsch->harq_processes[harq_pid]->round == 0) { // this is a new packet
start_meas(&eNB->dlsch_turbo_encoding_preperation_stats);
// Add 24-bit crc (polynomial A) to payload
crc = crc24a(a,
A)>>8;
stop_meas(&eNB->dlsch_turbo_encoding_preperation_stats);
a[A>>3] = ((uint8_t *)&crc)[2];
a[1+(A>>3)] = ((uint8_t *)&crc)[1];
a[2+(A>>3)] = ((uint8_t *)&crc)[0];
dlsch->harq_processes[harq_pid]->B = A+24;
memcpy(dlsch->harq_processes[harq_pid]->b,a,(A/8)+4);
//stop_meas(&eNB->dlsch_turbo_encoding_preperation_stats);
start_meas(&eNB->dlsch_turbo_encoding_segmentation_stats);
if (lte_segmentation(dlsch->harq_processes[harq_pid]->b,
dlsch->harq_processes[harq_pid]->c,
dlsch->harq_processes[harq_pid]->B,
&dlsch->harq_processes[harq_pid]->C,
&dlsch->harq_processes[harq_pid]->Cplus,
&dlsch->harq_processes[harq_pid]->Cminus,
&dlsch->harq_processes[harq_pid]->Kplus,
&dlsch->harq_processes[harq_pid]->Kminus,
&dlsch->harq_processes[harq_pid]->F)<0)
return(-1);
stop_meas(&eNB->dlsch_turbo_encoding_segmentation_stats);
start_meas(&eNB->dlsch_turbo_encoding_signal_stats);
for(int i=0; i<worker_num; i++) {
proc->tep[i].eNB = eNB;
proc->tep[i].dlsch = dlsch;
proc->tep[i].G = G;
proc->tep[i].harq_pid = harq_pid;
proc->tep[i].total_worker = worker_num;
proc->tep[i].current_worker = i;
pthread_mutex_lock( &proc->tep[i].mutex_te );
if (proc->tep[i].instance_cnt_te==0) {
printf("[eNB] TE thread busy\n");
exit_fun("TE thread busy");
pthread_mutex_unlock( &proc->tep[i].mutex_te );
return(-1);
}
++proc->tep[i].instance_cnt_te;
// wakeup worker to do segments
if (pthread_cond_signal(&proc->tep[i].cond_te) != 0) {
printf("[eNB] ERROR pthread_cond_signal for te thread %d exit\n",i);
exit_fun( "ERROR pthread_cond_signal" );
return (-1);
}
pthread_mutex_unlock( &proc->tep[i].mutex_te );
}
stop_meas(&eNB->dlsch_turbo_encoding_signal_stats);
start_meas(te_main_stats);
for (r=(dlsch->harq_processes[harq_pid]->C/(worker_num+1))*worker_num; r<dlsch->harq_processes[harq_pid]->C; r++) {
if (r<dlsch->harq_processes[harq_pid]->Cminus)
Kr = dlsch->harq_processes[harq_pid]->Kminus;
else
Kr = dlsch->harq_processes[harq_pid]->Kplus;
Kr_bytes = Kr>>3;
start_meas(te_stats);
encoder(dlsch->harq_processes[harq_pid]->c[r],
Kr>>3,
&dlsch->harq_processes[harq_pid]->d[r][96],
(r==0) ? dlsch->harq_processes[harq_pid]->F : 0
);
stop_meas(te_stats);
start_meas(i_stats);
dlsch->harq_processes[harq_pid]->RTC[r] =
sub_block_interleaving_turbo(4+(Kr_bytes*8),
&dlsch->harq_processes[harq_pid]->d[r][96],
dlsch->harq_processes[harq_pid]->w[r]);
stop_meas(i_stats);
}
} else {
for(int i=0; i<worker_num; i++) {
proc->tep[i].eNB = eNB;
proc->tep[i].dlsch = dlsch;
proc->tep[i].G = G;
proc->tep[i].total_worker = worker_num;
proc->tep[i].current_worker = i;
if (pthread_cond_signal(&proc->tep[i].cond_te) != 0) {
printf("[eNB] ERROR pthread_cond_signal for te thread exit\n");
exit_fun( "ERROR pthread_cond_signal" );
return (-1);
}
}
}
// Fill in the "e"-sequence from 36-212, V8.6 2009-03, p. 16-17 (for each "e") and concatenate the
// outputs for each code segment, see Section 5.1.5 p.20
for (r=0,r_offset=0; r<dlsch->harq_processes[harq_pid]->C; r++) {
// get information for E for the segments that are handled by the worker thread
if (r<(dlsch->harq_processes[harq_pid]->C/(worker_num+1))*worker_num) {
int Nl=dlsch->harq_processes[harq_pid]->Nl;
int Qm=dlsch->harq_processes[harq_pid]->Qm;
int C = dlsch->harq_processes[harq_pid]->C;
int Gp = G/Nl/Qm;
int GpmodC = Gp%C;
if (r < (C-(GpmodC)))
r_offset += Nl*Qm * (Gp/C);
else
r_offset += Nl*Qm * ((GpmodC==0?0:1) + (Gp/C));
} else {
start_meas(rm_stats);
r_offset += lte_rate_matching_turbo(dlsch->harq_processes[harq_pid]->RTC[r],
G, //G
dlsch->harq_processes[harq_pid]->w[r],
dlsch->harq_processes[harq_pid]->e+r_offset,
dlsch->harq_processes[harq_pid]->C, // C
dlsch->Nsoft, // Nsoft,
dlsch->Mdlharq,
dlsch->Kmimo,
dlsch->harq_processes[harq_pid]->rvidx,
dlsch->harq_processes[harq_pid]->Qm,
dlsch->harq_processes[harq_pid]->Nl,
r,
nb_rb);
// m); // r
stop_meas(rm_stats);
}
}
stop_meas(te_main_stats);
start_meas(te_wait_stats);
if(worker_num == 1) {
wait_on_busy_condition(&proc->tep[0].mutex_te,&proc->tep[0].cond_te,&proc->tep[0].instance_cnt_te,"te thread 0");
} else if(worker_num == 2) {
wait_on_busy_condition(&proc->tep[0].mutex_te,&proc->tep[0].cond_te,&proc->tep[0].instance_cnt_te,"te thread 0");
wait_on_busy_condition(&proc->tep[1].mutex_te,&proc->tep[1].cond_te,&proc->tep[1].instance_cnt_te,"te thread 1");
} else {
wait_on_busy_condition(&proc->tep[0].mutex_te,&proc->tep[0].cond_te,&proc->tep[0].instance_cnt_te,"te thread 0");
wait_on_busy_condition(&proc->tep[1].mutex_te,&proc->tep[1].cond_te,&proc->tep[1].instance_cnt_te,"te thread 1");
wait_on_busy_condition(&proc->tep[2].mutex_te,&proc->tep[2].cond_te,&proc->tep[2].instance_cnt_te,"te thread 2");
}
stop_meas(te_wait_stats);
/*if(opp_enabled == 1 && te_wait_stats->p_time>100*3000){
print_meas_now(te_wait_stats,"coding_wait",stderr);
printf("coding delay in wait on codition in frame_rx: %d \n",proc->frame_rx);
}*/
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ENCODING, VCD_FUNCTION_OUT);
return(0);
}
int dlsch_encoding_all(PHY_VARS_eNB *eNB,
unsigned char *a,
uint8_t num_pdcch_symbols,
LTE_eNB_DLSCH_t *dlsch,
int frame,
uint8_t subframe,
time_stats_t *rm_stats,
time_stats_t *te_stats,
time_stats_t *te_wait_stats,
time_stats_t *te_main_stats,
time_stats_t *te_wakeup_stats0,
time_stats_t *te_wakeup_stats1,
time_stats_t *i_stats) {
int encoding_return = 0;
unsigned int L,C,B;
uint8_t harq_pid = dlsch->harq_ids[frame%2][subframe];
if(harq_pid >= dlsch->Mdlharq) {
LOG_E(PHY,"dlsch_encoding_all illegal harq_pid %d\n", harq_pid);
return(-1);
}
B = dlsch->harq_processes[harq_pid]->B;
LOG_D(PHY,"B %d, harq_pid %d\n",B,dlsch->harq_ids[frame%2][subframe]);
if(B<=6144) {
L=0;
C=1;
} else {
L=24;
C = B/(6144-L);
if((6144-L)*C < B) {
C = C+1;
}
}
if(get_thread_worker_conf() == WORKER_ENABLE) {
if(C >= 8) { //one main three worker
encoding_return =
dlsch_encoding_2threads(eNB,
a,
num_pdcch_symbols,
dlsch,
frame,
subframe,
rm_stats,
te_stats,
te_wait_stats,
te_main_stats,
te_wakeup_stats0,
te_wakeup_stats1,
i_stats,
3);
} else if(C >= 6) { //one main two worker
encoding_return =
dlsch_encoding_2threads(eNB,
a,
num_pdcch_symbols,
dlsch,
frame,
subframe,
rm_stats,
te_stats,
te_wait_stats,
te_main_stats,
te_wakeup_stats0,
te_wakeup_stats1,
i_stats,
2);
} else if(C >= 4) { //one main one worker
encoding_return =
dlsch_encoding_2threads(eNB,
a,
num_pdcch_symbols,
dlsch,
frame,
subframe,
rm_stats,
te_stats,
te_wait_stats,
te_main_stats,
te_wakeup_stats0,
te_wakeup_stats1,
i_stats,
1);
} else {
encoding_return =
dlsch_encoding(eNB,
a,
num_pdcch_symbols,
dlsch,
frame,
subframe,
rm_stats,
te_stats,
i_stats);
}
} else {
encoding_return =
dlsch_encoding(eNB,
a,
num_pdcch_symbols,
dlsch,
frame,
subframe,
rm_stats,
te_stats,
i_stats);
}
return encoding_return;
}
int dlsch_encoding(PHY_VARS_eNB *eNB,
unsigned char *a,
uint8_t num_pdcch_symbols,
LTE_eNB_DLSCH_t *dlsch,
int frame,
uint8_t subframe,
time_stats_t *rm_stats,
time_stats_t *te_stats,
time_stats_t *i_stats) {
unsigned int G;
unsigned int crc=1;
LTE_DL_FRAME_PARMS *frame_parms = &eNB->frame_parms;
unsigned char harq_pid = dlsch->harq_ids[frame%2][subframe];
if((harq_pid < 0) || (harq_pid >= dlsch->Mdlharq)) {
LOG_E(PHY,"dlsch_encoding illegal harq_pid %d %s:%d\n", harq_pid, __FILE__, __LINE__);
return(-1);
}
unsigned short nb_rb = dlsch->harq_processes[harq_pid]->nb_rb;
unsigned int A;
unsigned char mod_order;
unsigned int Kr=0,Kr_bytes,r,r_offset=0;
// unsigned short m=dlsch->harq_processes[harq_pid]->mcs;
uint8_t beamforming_mode=0;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ENCODING, VCD_FUNCTION_IN);
A = dlsch->harq_processes[harq_pid]->TBS; //6228
// printf("Encoder: A: %d\n",A);
mod_order = dlsch->harq_processes[harq_pid]->Qm;
if(dlsch->harq_processes[harq_pid]->mimo_mode == TM7)
beamforming_mode = 7;
else if(dlsch->harq_processes[harq_pid]->mimo_mode == TM8)
beamforming_mode = 8;
else if(dlsch->harq_processes[harq_pid]->mimo_mode == TM9_10)
beamforming_mode = 9;
G = get_G(frame_parms,nb_rb,dlsch->harq_processes[harq_pid]->rb_alloc,mod_order,dlsch->harq_processes[harq_pid]->Nl,num_pdcch_symbols,frame,subframe,beamforming_mode);
// if (dlsch->harq_processes[harq_pid]->Ndi == 1) { // this is a new packet
if (dlsch->harq_processes[harq_pid]->round == 0) { // this is a new packet
#ifdef DEBUG_DLSCH_CODING
printf("encoding thinks this is a new packet for harq_pid %d (%p), A %u \n",harq_pid,dlsch,A);
#endif
/*
int i;
printf("dlsch (tx): \n");
for (i=0;i<(A>>3);i++)
printf("%02x.",a[i]);
printf("\n");
*/
// Add 24-bit crc (polynomial A) to payload
crc = crc24a(a,
A)>>8;
a[A>>3] = ((uint8_t *)&crc)[2];
a[1+(A>>3)] = ((uint8_t *)&crc)[1];
a[2+(A>>3)] = ((uint8_t *)&crc)[0];
// printf("CRC %x (A %d)\n",crc,A);
dlsch->harq_processes[harq_pid]->B = A+24;
// dlsch->harq_processes[harq_pid]->b = a;
memcpy(dlsch->harq_processes[harq_pid]->b,a,(A/8)+4);
if (lte_segmentation(dlsch->harq_processes[harq_pid]->b,
dlsch->harq_processes[harq_pid]->c,
dlsch->harq_processes[harq_pid]->B,
&dlsch->harq_processes[harq_pid]->C,
&dlsch->harq_processes[harq_pid]->Cplus,
&dlsch->harq_processes[harq_pid]->Cminus,
&dlsch->harq_processes[harq_pid]->Kplus,
&dlsch->harq_processes[harq_pid]->Kminus,
&dlsch->harq_processes[harq_pid]->F)<0)
return(-1);
for (r=0; r<dlsch->harq_processes[harq_pid]->C; r++) {
if (r<dlsch->harq_processes[harq_pid]->Cminus)
Kr = dlsch->harq_processes[harq_pid]->Kminus;
else
Kr = dlsch->harq_processes[harq_pid]->Kplus;
Kr_bytes = Kr>>3;
#ifdef DEBUG_DLSCH_CODING
printf("Generating Code Segment %u (%u bits)\n",r,Kr);
// generate codewords
printf("bits_per_codeword (Kr)= %u, A %u\n",Kr,A);
printf("N_RB = %d\n",nb_rb);
printf("Ncp %d\n",frame_parms->Ncp);
printf("mod_order %d\n",mod_order);
#endif
start_meas(te_stats);
encoder(dlsch->harq_processes[harq_pid]->c[r],
Kr>>3,
&dlsch->harq_processes[harq_pid]->d[r][96],
(r==0) ? dlsch->harq_processes[harq_pid]->F : 0
);
stop_meas(te_stats);
#ifdef DEBUG_DLSCH_CODING
if (r==0)
LOG_M("enc_output0.m","enc0",&dlsch->harq_processes[harq_pid]->d[r][96],(3*8*Kr_bytes)+12,1,4);
#endif
start_meas(i_stats);
dlsch->harq_processes[harq_pid]->RTC[r] =
sub_block_interleaving_turbo(4+(Kr_bytes*8),
&dlsch->harq_processes[harq_pid]->d[r][96],
dlsch->harq_processes[harq_pid]->w[r]);
stop_meas(i_stats);
}
}
// Fill in the "e"-sequence from 36-212, V8.6 2009-03, p. 16-17 (for each "e") and concatenate the
// outputs for each code segment, see Section 5.1.5 p.20
for (r=0; r<dlsch->harq_processes[harq_pid]->C; r++) {
#ifdef DEBUG_DLSCH_CODING
printf("Rate Matching, Code segment %u (coded bits (G) %u,unpunctured/repeated bits per code segment %u,mod_order %d, nb_rb %d)...\n",
r,
G,
Kr*3,
mod_order,nb_rb);
#endif
start_meas(rm_stats);
#ifdef DEBUG_DLSCH_CODING
printf("rvidx in encoding = %d\n", dlsch->harq_processes[harq_pid]->rvidx);
#endif
r_offset += lte_rate_matching_turbo(dlsch->harq_processes[harq_pid]->RTC[r],
G, //G
dlsch->harq_processes[harq_pid]->w[r],
dlsch->harq_processes[harq_pid]->e+r_offset,
dlsch->harq_processes[harq_pid]->C, // C
dlsch->Nsoft, // Nsoft,
dlsch->Mdlharq,
dlsch->Kmimo,
dlsch->harq_processes[harq_pid]->rvidx,
dlsch->harq_processes[harq_pid]->Qm,
dlsch->harq_processes[harq_pid]->Nl,
r,
nb_rb);
// m); // r
stop_meas(rm_stats);
#ifdef DEBUG_DLSCH_CODING
if (r==dlsch->harq_processes[harq_pid]->C-1)
LOG_M("enc_output.m","enc",dlsch->harq_processes[harq_pid]->e,r_offset,1,4);
#endif
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ENCODING, VCD_FUNCTION_OUT);
return(0);
}
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