Commit 23dbc2ad authored by Hongzhi Wang's avatar Hongzhi Wang
Browse files

nr adding filler bits and dlsch coding

parent 83503489
/*
* 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/LTE_TRANSPORT/dlsch_coding.c
* \brief Top-level routines for implementing LDPC-coded (DLSCH) transport channels from 38-212, 15.2
* \author H.Wang
* \date 2018
* \version 0.1
* \company Eurecom
* \email:
* \note
* \warning
*/
#include "PHY/defs_gNB.h"
#include "PHY/phy_extern.h"
#include "PHY/CODING/coding_extern.h"
#include "PHY/CODING/coding_defs.h"
#include "PHY/CODING/lte_interleaver_inline.h"
#include "PHY/NR_TRANSPORT/nr_transport.h"
#include "PHY/NR_TRANSPORT/nr_transport_common_proto.h"
#include "SCHED_NR/sched_nr.h"
#include "defs.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
#include "UTIL/LOG/log.h"
#include <syscall.h>
//#define DEBUG_DLSCH_CODING
//#define DEBUG_DLSCH_FREE 1
void free_gNB_dlsch(NR_gNB_DLSCH_t *dlsch)
{
int i;
int r;
if (dlsch) {
#ifdef DEBUG_DLSCH_FREE
printf("Freeing dlsch %p\n",dlsch);
#endif
for (i=0; i<dlsch->Mdlharq; i++) {
#ifdef DEBUG_DLSCH_FREE
printf("Freeing dlsch process %d\n",i);
#endif
if (dlsch->harq_processes[i]) {
#ifdef DEBUG_DLSCH_FREE
printf("Freeing dlsch process %d (%p)\n",i,dlsch->harq_processes[i]);
#endif
if (dlsch->harq_processes[i]->b) {
free16(dlsch->harq_processes[i]->b,MAX_DLSCH_PAYLOAD_BYTES);
dlsch->harq_processes[i]->b = NULL;
#ifdef DEBUG_DLSCH_FREE
printf("Freeing dlsch process %d b (%p)\n",i,dlsch->harq_processes[i]->b);
#endif
}
#ifdef DEBUG_DLSCH_FREE
printf("Freeing dlsch process %d c (%p)\n",i,dlsch->harq_processes[i]->c);
#endif
for (r=0; r<MAX_NUM_DLSCH_SEGMENTS; r++) {
#ifdef DEBUG_DLSCH_FREE
printf("Freeing dlsch process %d c[%d] (%p)\n",i,r,dlsch->harq_processes[i]->c[r]);
#endif
if (dlsch->harq_processes[i]->c[r]) {
free16(dlsch->harq_processes[i]->c[r],((r==0)?8:0) + 3+1056);
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*8448)));
dlsch->harq_processes[i]->d[r] = NULL;
}
}
free16(dlsch->harq_processes[i],sizeof(NR_DL_gNB_HARQ_t));
dlsch->harq_processes[i] = NULL;
}
}
free16(dlsch,sizeof(NR_gNB_DLSCH_t));
dlsch = NULL;
}
}
NR_gNB_DLSCH_t *new_gNB_dlsch(unsigned char Kmimo,unsigned char Mdlharq,uint32_t Nsoft,unsigned char N_RB_DL, uint8_t abstraction_flag, NR_DL_FRAME_PARMS* frame_parms)
{
NR_gNB_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 106:
bw_scaling =2;
break;
default:
bw_scaling =1;
break;
}
dlsch = (NR_gNB_DLSCH_t *)malloc16(sizeof(NR_gNB_DLSCH_t));
if (dlsch) {
bzero(dlsch,sizeof(NR_gNB_DLSCH_t));
dlsch->Kmimo = Kmimo;
dlsch->Mdlharq = Mdlharq;
dlsch->Mlimit = 4;
dlsch->Nsoft = Nsoft;
for (layer=0; layer<4; layer++) {
dlsch->ue_spec_bf_weights[layer] = (int32_t**)malloc16(frame_parms->nb_antennas_tx*sizeof(int32_t*));
for (aa=0; aa<frame_parms->nb_antennas_tx; 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;
}
}
}
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<10; i++)
dlsch->harq_ids[i] = Mdlharq;
for (i=0; i<Mdlharq; i++) {
dlsch->harq_processes[i] = (NR_DL_gNB_HARQ_t *)malloc16(sizeof(NR_DL_gNB_HARQ_t));
LOG_T(PHY, "Required mem size %d (bw scaling %d), dlsch->harq_processes[%d] %p\n",
MAX_NR_ULSCH_PAYLOAD_BYTES/bw_scaling,bw_scaling, i,dlsch->harq_processes[i]);
if (dlsch->harq_processes[i]) {
bzero(dlsch->harq_processes[i],sizeof(NR_DL_gNB_HARQ_t));
// dlsch->harq_processes[i]->first_tx=1;
dlsch->harq_processes[i]->b = (unsigned char*)malloc16(MAX_NR_ULSCH_PAYLOAD_BYTES/bw_scaling);
if (dlsch->harq_processes[i]->b) {
bzero(dlsch->harq_processes[i]->b,MAX_NR_ULSCH_PAYLOAD_BYTES/bw_scaling);
} else {
printf("Can't get b\n");
exit_flag=1;
}
if (abstraction_flag==0) {
for (r=0; r<MAX_NUM_NR_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(8448);
dlsch->harq_processes[i]->d[r] = (uint8_t*)malloc16(3*8448);
if (dlsch->harq_processes[i]->c[r]) {
bzero(dlsch->harq_processes[i]->c[r],8448);
} else {
printf("Can't get c\n");
exit_flag=2;
}
if (dlsch->harq_processes[i]->d[r]) {
bzero(dlsch->harq_processes[i]->d[r],(3*8448));
} 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;
}
return(dlsch);
}
}
LOG_D(PHY,"new_gNB_dlsch exit flag %d, size of %ld\n",
exit_flag, sizeof(NR_gNB_DLSCH_t));
free_gNB_dlsch(dlsch);
return(NULL);
}
void clean_gNB_dlsch(NR_gNB_DLSCH_t *dlsch)
{
unsigned char Mdlharq;
unsigned char i,j,r;
if (dlsch) {
Mdlharq = dlsch->Mdlharq;
dlsch->rnti = 0;
dlsch->active = 0;
for (i=0; i<10; i++)
dlsch->harq_ids[i] = 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] = NR_NULL;
}
}
}
}
int dlsch_encoding(PHY_VARS_gNB *gNB,
unsigned char *a,
uint8_t num_pdcch_symbols,
NR_gNB_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;
unsigned short iind;
NR_DL_FRAME_PARMS *frame_parms = &gNB->frame_parms;
unsigned char harq_pid = dlsch->current_harq_pid;
unsigned short nb_rb = dlsch->harq_processes[harq_pid]->nb_rb;
unsigned int A, Z;
unsigned *pz = &Z;
unsigned char mod_order;
unsigned int Kr=0,Kr_bytes,r,r_offset=0,Kr_int=0;
unsigned short m=dlsch->harq_processes[harq_pid]->mcs;
uint8_t beamforming_mode=0;
uint8_t *d_tmp[MAX_NUM_DLSCH_SEGMENTS];
double rate = 0.33;
uint8_t kb,BG;
uint32_t E;
uint8_t Ilbrm = 0;
uint32_t Tbslbrm = 950984; //to compute tbs
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ENCODING, VCD_FUNCTION_IN);
A = dlsch->harq_processes[harq_pid]->TBS;
//printf("Encoder: A: %d frame.subframe %d.%d \n",A, frame,subframe);
mod_order = get_nr_Qm(dlsch->harq_processes[harq_pid]->mcs);
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 \n");
#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);
nr_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]->K,
pz,
&dlsch->harq_processes[harq_pid]->F);
kb = dlsch->harq_processes[harq_pid]->K/(*pz);
if ( kb==22){
BG = 1;
}
else{
BG = 2;
}
//printf("Encoder: B %d F %d \n",dlsch->harq_processes[harq_pid]->B, dlsch->harq_processes[harq_pid]->F);
Kr = dlsch->harq_processes[harq_pid]->K;
Kr_bytes = Kr>>3;
start_meas(te_stats);
for (r=0; r<dlsch->harq_processes[harq_pid]->C; r++) {
d_tmp[r] = &dlsch->harq_processes[harq_pid]->d[r][0];
#ifdef DEBUG_DLSCH_CODING
printf("start ldpc encoder segment %d/%d\n",r,dlsch->harq_processes[harq_pid]->C);
printf("input %d %d %d %d %d \n", dlsch->harq_processes[harq_pid]->c[r][0], dlsch->harq_processes[harq_pid]->c[r][1], dlsch->harq_processes[harq_pid]->c[r][2],dlsch->harq_processes[harq_pid]->c[r][3], dlsch->harq_processes[harq_pid]->c[r][4]);
/*for (int cnt =0 ; cnt < 22*(*pz); cnt ++){
printf("%d ", dlsch->harq_processes[harq_pid]->c[r][cnt]);
}*/
#endif
//ldpc_encoder_orig((unsigned char*)dlsch->harq_processes[harq_pid]->c[r],&dlsch->harq_processes[harq_pid]->d[r][96],Kr,1,3,0);
//ldpc_encoder((unsigned char*)dlsch->harq_processes[harq_pid]->c[r],&dlsch->harq_processes[harq_pid]->d[r][96],Kr,1,3);
//ldpc_encoder_optim((unsigned char*)dlsch->harq_processes[harq_pid]->c[r],(unsigned char*)&dlsch->harq_processes[harq_pid]->d[r][96],Kr,1,3,NULL,NULL,NULL,NULL);
}
ldpc_encoder_optim_8seg(dlsch->harq_processes[harq_pid]->c,d_tmp,Kr,1,3,dlsch->harq_processes[harq_pid]->C,NULL,NULL,NULL,NULL);
stop_meas(te_stats);
/*printf("end ldpc encoder -- output\n");
printf("output %d %d %d %d %d \n", dlsch->harq_processes[harq_pid]->d[r][0], dlsch->harq_processes[harq_pid]->d[r][1], dlsch->harq_processes[harq_pid]->d[r][2],dlsch->harq_processes[harq_pid]->d[r][3], dlsch->harq_processes[harq_pid]->d[r][4]);
for (int cnt =0 ; cnt < 66*(*pz); cnt ++){
printf("%d \n", dlsch->harq_processes[harq_pid]->d[r][cnt]);
}
printf("\n");*/
#ifdef DEBUG_DLSCH_CODING
write_output("enc_input0.m","enc_in0",&dlsch->harq_processes[harq_pid]->c[0][0],Kr_bytes,1,4);
write_output("enc_output0.m","enc0",&dlsch->harq_processes[harq_pid]->d[0][0],(3*8*Kr_bytes)+12,1,4);
#endif
}
for (r=0; r<dlsch->harq_processes[harq_pid]->C; r++) {
#ifdef DEBUG_DLSCH_CODING
printf("Rate Matching, Code segment %d (coded bits (G) %d,unpunctured/repeated bits per code segment %d,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 += nr_rate_matching_ldpc(Ilbrm,
Tbslbrm,
BG,
*pz,
G,
dlsch->harq_processes[harq_pid]->d[r],
dlsch->harq_processes[harq_pid]->e+r_offset,
dlsch->harq_processes[harq_pid]->C,
dlsch->harq_processes[harq_pid]->rvidx,
mod_order,
dlsch->harq_processes[harq_pid]->Nl,
r);
stop_meas(rm_stats);
if (r==0) E=r_offset;
start_meas(i_stats);
nr_interleaving_ldpc(E,
&dlsch->harq_processes[harq_pid]->Qm,
dlsch->harq_processes[harq_pid]->e+r_offset,
dlsch->harq_processes[harq_pid]->f+r_offset);
stop_meas(i_stats);
#ifdef DEBUG_DLSCH_CODING
if (r==dlsch->harq_processes[harq_pid]->C-1)
write_output("enc_output.m","enc",dlsch->harq_processes[harq_pid]->f,r_offset,1,4);
#endif
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ENCODING, VCD_FUNCTION_OUT);
return(0);
}
......@@ -382,7 +382,7 @@ uint32_t nr_dlsch_decoding(PHY_VARS_NR_UE *phy_vars_ue,
#endif
nr_deinterleaving_ldpc(E,
harq_process->Qm,
&harq_process->d[r],
harq_process->d[r],
harq_process->w[r]);
#if UE_TIMING_TRACE
......@@ -445,16 +445,20 @@ uint32_t nr_dlsch_decoding(PHY_VARS_NR_UE *phy_vars_ue,
}
printf(" \n");*/
memset(pv,0,2*p_decParams->Z*sizeof(int16_t));
memset(pv,0,harq_process->K*sizeof(int16_t));
//memset(pl,0,2*p_decParams->Z*sizeof(int8_t));
for (i=2*p_decParams->Z/8, j = 0; i < (kc*p_decParams->Z/8+1); i++, j++)
for (i=((2*p_decParams->Z)>>3), j = 0; i < (Kr_bytes-(harq_process->F>>3)); i++, j++)
{
pv[i]= _mm_loadu_si128((__m128i*)(&inv_d[8*j]));
}
for (i=Kr_bytes, j = (Kr_bytes-(harq_process->F>>3)); 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/16); i+=2, 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]);
......
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