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srsLTE
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srsLTE/lib/src/phy/phch/test/pusch_test.c

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/*
* Copyright 2013-2019 Software Radio Systems Limited
*
* This file is part of srsLTE.
*
* srsLTE is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsLTE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#include "srslte/srslte.h"
#include <srslte/phy/phch/pusch_cfg.h>
#include <srslte/phy/utils/random.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <unistd.h>
#include "srslte/srslte.h"
static srslte_cell_t cell = {
.nof_prb = 6, // nof_prb
.nof_ports = 1, // nof_ports
.id = 0, // cell_id
.cp = SRSLTE_CP_NORM, // cyclic prefix
.phich_length = SRSLTE_PHICH_NORM, // PHICH length
.phich_resources = SRSLTE_PHICH_R_1_6 // PHICH resources
};
static srslte_uci_offset_cfg_t uci_cfg = {
.I_offset_cqi = 6,
.I_offset_ri = 2,
.I_offset_ack = 9,
};
static srslte_uci_data_t uci_data_tx = {};
uint32_t L_rb = 2;
uint32_t tbs = 0;
uint32_t subframe = 10;
srslte_mod_t modulation = SRSLTE_MOD_QPSK;
uint32_t rv_idx = 0;
int freq_hop = -1;
int riv = -1;
uint32_t mcs_idx = 0;
bool enable_64_qam = false;
void usage(char* prog)
{
printf("Usage: %s [csrnfvmtF] \n", prog);
printf("\n\tCell specific parameters:\n");
printf("\t\t-n number of PRB [Default %d]\n", cell.nof_prb);
printf("\t\t-c cell id [Default %d]\n", cell.id);
printf("\n\tGrant parameters:\n");
printf("\t\t-m MCS index (0-28) [Default %d]\n", mcs_idx);
printf("\t\t-F frequency hopping [Default %d]\n", freq_hop);
printf("\t\t-L L_rb [Default %d]\n", L_rb);
printf("\t\t-R RIV [Default %d]\n", riv);
printf("\t\t-r rv_idx (0-3) [Default %d]\n", rv_idx);
printf("\n\tCQI/RI/ACK Reporting indexes parameters:\n");
printf("\t\t-p I_offset_cqi (0-15) [Default %d]\n", uci_cfg.I_offset_cqi);
printf("\t\t-p I_offset_ri (0-15) [Default %d]\n", uci_cfg.I_offset_ri);
printf("\t\t-p I_offset_ack (0-15) [Default %d]\n", uci_cfg.I_offset_ack);
printf("\n\tCQI/RI/ACK Reporting contents:\n");
printf("\t\t-p cqi (none, wideband) [Default none]\n");
printf("\t\t-p ri (0-1) (zeros, ones, random) [Default none]\n");
printf("\t\t-p uci_ack [Default none]\n");
printf("\n\tOther parameters:\n");
printf("\t\t-p enable_64qam [Default %s]\n", enable_64_qam ? "enabled" : "disabled");
printf("\t\t-s number of subframes [Default %d]\n", subframe);
printf("\t-v [set srslte_verbose to debug, default none]\n");
}
void parse_extensive_param(char* param, char* arg)
{
int ext_code = SRSLTE_SUCCESS;
if (!strcmp(param, "I_offset_cqi")) {
uci_cfg.I_offset_cqi = (uint32_t)strtol(arg, NULL, 10);
if (uci_cfg.I_offset_cqi > 15) {
ext_code = SRSLTE_ERROR;
}
} else if (!strcmp(param, "I_offset_ri")) {
uci_cfg.I_offset_ri = (uint32_t)strtol(arg, NULL, 10);
if (uci_cfg.I_offset_ri > 15) {
ext_code = SRSLTE_ERROR;
}
} else if (!strcmp(param, "I_offset_ack")) {
uci_cfg.I_offset_ack = (uint32_t)strtol(arg, NULL, 10);
if (uci_cfg.I_offset_ack > 15) {
ext_code = SRSLTE_ERROR;
}
} else if (!strcmp(param, "cqi")) {
if (!strcmp(arg, "wideband")) {
uci_data_tx.cfg.cqi.type = SRSLTE_CQI_TYPE_WIDEBAND;
uci_data_tx.value.cqi.wideband.wideband_cqi = (uint8_t)(0x0f);
uci_data_tx.cfg.cqi.data_enable = true;
} else if (!strcmp(arg, "none")) {
uci_data_tx.cfg.cqi.data_enable = false;
} else {
ext_code = SRSLTE_ERROR;
}
} else if (!strcmp(param, "ri")) {
uci_data_tx.value.ri = (uint8_t)strtol(arg, NULL, 10);
if (uci_data_tx.value.ri > 1) {
ext_code = SRSLTE_ERROR;
} else {
uci_data_tx.cfg.cqi.ri_len = 1;
}
} else if (!strcmp(param, "uci_ack")) {
uci_data_tx.cfg.ack[0].nof_acks = SRSLTE_MIN(uci_data_tx.cfg.ack[0].nof_acks + 1, SRSLTE_UCI_MAX_ACK_BITS);
} else if (!strcmp(param, "enable_64qam")) {
enable_64_qam ^= true;
} else {
ext_code = SRSLTE_ERROR;
}
if (ext_code) {
ERROR("Error parsing parameter '%s' and argument '%s'\n", param, arg);
exit(ext_code);
}
}
void parse_args(int argc, char** argv)
{
int opt;
while ((opt = getopt(argc, argv, "msLFrncpvf")) != -1) {
switch (opt) {
case 'm':
mcs_idx = (uint32_t)strtol(argv[optind], NULL, 10);
break;
case 's':
subframe = (uint32_t)strtol(argv[optind], NULL, 10);
break;
case 'R':
riv = (int)strtol(argv[optind], NULL, 10);
break;
case 'L':
L_rb = (uint32_t)strtol(argv[optind], NULL, 10);
break;
case 'F':
freq_hop = (int)strtol(argv[optind], NULL, 10);
break;
case 'r':
rv_idx = (uint32_t)strtol(argv[optind], NULL, 10);
break;
case 'n':
cell.nof_prb = (uint32_t)strtol(argv[optind], NULL, 10);
break;
case 'c':
cell.id = (uint32_t)strtol(argv[optind], NULL, 10);
break;
case 'p':
parse_extensive_param(argv[optind], argv[optind + 1]);
optind++;
break;
case 'v':
srslte_verbose++;
break;
default:
usage(argv[0]);
exit(-1);
}
}
}
int main(int argc, char** argv)
{
srslte_random_t random_h = srslte_random_init(0);
srslte_chest_ul_res_t chest_res;
srslte_pusch_t pusch_tx;
srslte_pusch_t pusch_rx;
uint8_t* data = NULL;
uint8_t* data_rx = NULL;
cf_t* sf_symbols = NULL;
int ret = -1;
struct timeval t[3];
srslte_pusch_cfg_t cfg;
srslte_softbuffer_tx_t softbuffer_tx;
srslte_softbuffer_rx_t softbuffer_rx;
ZERO_OBJECT(uci_data_tx);
bzero(&cfg, sizeof(srslte_pusch_cfg_t));
srslte_dci_ul_t dci;
ZERO_OBJECT(dci);
parse_args(argc, argv);
dci.freq_hop_fl = freq_hop;
if (riv >= 0) {
dci.type2_alloc.riv = (uint32_t)riv;
} else {
dci.type2_alloc.riv = srslte_ra_type2_to_riv(L_rb, 0, cell.nof_prb);
}
dci.tb.mcs_idx = mcs_idx;
srslte_ul_sf_cfg_t ul_sf;
ZERO_OBJECT(ul_sf);
ul_sf.tti = 0;
srslte_pusch_hopping_cfg_t ul_hopping = {.n_sb = 1, .hopping_offset = 0, .hop_mode = 1};
if (srslte_ra_ul_dci_to_grant(&cell, &ul_sf, &ul_hopping, &dci, &cfg.grant)) {
ERROR("Error computing resource allocation\n");
return ret;
}
cfg.grant.n_prb_tilde[0] = cfg.grant.n_prb[0];
cfg.grant.n_prb_tilde[1] = cfg.grant.n_prb[1];
if (srslte_pusch_init_ue(&pusch_tx, cell.nof_prb)) {
ERROR("Error creating PUSCH object\n");
goto quit;
}
if (srslte_pusch_set_cell(&pusch_tx, cell)) {
ERROR("Error creating PUSCH object\n");
goto quit;
}
if (srslte_pusch_init_enb(&pusch_rx, cell.nof_prb)) {
ERROR("Error creating PUSCH object\n");
goto quit;
}
if (srslte_pusch_set_cell(&pusch_rx, cell)) {
ERROR("Error creating PUSCH object\n");
goto quit;
}
uint16_t rnti = 62;
dci.rnti = rnti;
cfg.rnti = rnti;
srslte_pusch_set_rnti(&pusch_tx, rnti);
srslte_pusch_set_rnti(&pusch_rx, rnti);
uint32_t nof_re = SRSLTE_NRE * cell.nof_prb * 2 * SRSLTE_CP_NSYMB(cell.cp);
sf_symbols = srslte_vec_malloc(sizeof(cf_t) * nof_re);
if (!sf_symbols) {
perror("malloc");
exit(-1);
}
data = srslte_vec_malloc(sizeof(uint8_t) * 150000);
if (!data) {
perror("malloc");
exit(-1);
}
data_rx = srslte_vec_malloc(sizeof(uint8_t) * 150000);
if (!data_rx) {
perror("malloc");
exit(-1);
}
if (srslte_softbuffer_tx_init(&softbuffer_tx, 100)) {
ERROR("Error initiating soft buffer\n");
goto quit;
}
if (srslte_softbuffer_rx_init(&softbuffer_rx, 100)) {
ERROR("Error initiating soft buffer\n");
goto quit;
}
srslte_chest_ul_res_init(&chest_res, cell.nof_prb);
srslte_chest_ul_res_set_identity(&chest_res);
cfg.enable_64qam = enable_64_qam;
for (int n = 0; n < subframe; n++) {
ret = SRSLTE_SUCCESS;
/* Configure PUSCH */
ul_sf.tti = (uint32_t)n;
cfg.uci_offset = uci_cfg;
srslte_softbuffer_tx_reset(&softbuffer_tx);
srslte_softbuffer_rx_reset(&softbuffer_rx);
for (uint32_t i = 0; i < cfg.grant.tb.tbs / 8; i++) {
data[i] = (uint8_t)srslte_random_uniform_int_dist(random_h, 0, 255);
}
for (uint32_t a = 0; a < uci_data_tx.cfg.ack[0].nof_acks; a++) {
uci_data_tx.value.ack.ack_value[a] = (uint8_t)srslte_random_uniform_int_dist(random_h, 0, 1);
}
srslte_pusch_data_t pdata;
pdata.ptr = data;
pdata.uci = uci_data_tx.value;
cfg.uci_cfg = uci_data_tx.cfg;
cfg.softbuffers.tx = &softbuffer_tx;
if (srslte_pusch_encode(&pusch_tx, &ul_sf, &cfg, &pdata, sf_symbols)) {
ERROR("Error encoding TB\n");
exit(-1);
}
if (rv_idx > 0) {
cfg.grant.tb.rv = rv_idx;
if (srslte_pusch_encode(&pusch_tx, &ul_sf, &cfg, &pdata, sf_symbols)) {
ERROR("Error encoding TB\n");
exit(-1);
}
}
srslte_pusch_res_t pusch_res = {};
pusch_res.data = data_rx;
cfg.softbuffers.rx = &softbuffer_rx;
memcpy(&cfg.uci_cfg, &uci_data_tx.cfg, sizeof(srslte_uci_cfg_t));
gettimeofday(&t[1], NULL);
int r = srslte_pusch_decode(&pusch_rx, &ul_sf, &cfg, &chest_res, sf_symbols, &pusch_res);
gettimeofday(&t[2], NULL);
if (r) {
printf("Error returned while decoding\n");
ret = SRSLTE_ERROR;
}
if (memcmp(data_rx, data, (size_t)cfg.grant.tb.tbs / 8) != 0) {
printf("Unmatched data detected\n");
ret = SRSLTE_ERROR;
} else {
INFO("Rx Data is Ok\n");
}
if (uci_data_tx.cfg.ack[0].nof_acks) {
if (memcmp(uci_data_tx.value.ack.ack_value, pusch_res.uci.ack.ack_value, uci_data_tx.cfg.ack[0].nof_acks) != 0) {
printf("UCI ACK bit error:\n");
printf("\tTx: ");
srslte_vec_fprint_byte(stdout, uci_data_tx.value.ack.ack_value, uci_data_tx.cfg.ack[0].nof_acks);
printf("\tRx: ");
srslte_vec_fprint_byte(stdout, pusch_res.uci.ack.ack_value, cfg.uci_cfg.ack[0].nof_acks);
ret = SRSLTE_ERROR;
} else {
INFO("Rx ACK (%d bits) is Ok, %d%d\n",
uci_data_tx.cfg.ack[0].nof_acks,
uci_data_tx.value.ack.ack_value[0],
uci_data_tx.value.ack.ack_value[1]);
}
}
if (uci_data_tx.cfg.cqi.ri_len) {
if (uci_data_tx.value.ri != pusch_res.uci.ri) {
printf("UCI RI bit error: %d != %d\n", uci_data_tx.value.ri, pusch_res.uci.ri);
ret = SRSLTE_ERROR;
} else {
INFO("Rx RI is Ok\n");
}
}
if (uci_data_tx.cfg.cqi.data_enable) {
uci_data_tx.value.cqi.data_crc = pusch_res.uci.cqi.data_crc;
if (memcmp(&uci_data_tx.value.cqi, &pusch_res.uci.cqi, sizeof(pusch_res.uci.cqi)) != 0) {
printf("CQI Decode failed at subframe %d\n", n);
ret = SRSLTE_ERROR;
} else {
INFO("Rx CQI is Ok (crc=%d, wb_cqi=%d)\n", pusch_res.uci.cqi.data_crc, pusch_res.uci.cqi.wideband.wideband_cqi);
}
}
if (ret) {
goto quit;
}
get_time_interval(t);
printf("DECODED OK in %d:%d (TBS: %d bits, TX: %.2f Mbps, Processing: %.2f Mbps)\n",
(int)t[0].tv_sec,
(int)t[0].tv_usec,
cfg.grant.tb.tbs,
(float)cfg.grant.tb.tbs / 1000,
(float)cfg.grant.tb.tbs / t[0].tv_usec);
}
quit:
srslte_chest_ul_res_free(&chest_res);
srslte_pusch_free(&pusch_tx);
srslte_pusch_free(&pusch_rx);
srslte_softbuffer_tx_free(&softbuffer_tx);
srslte_softbuffer_rx_free(&softbuffer_rx);
srslte_random_free(random_h);
if (sf_symbols) {
free(sf_symbols);
}
if (data) {
free(data);
}
if (data_rx) {
free(data_rx);
}
if (ret) {
printf("Error\n");
} else {
printf("Ok\n");
}
exit(ret);
}
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