int main(int argc, char **argv) {
uint32_t i, j, k;
int ret = -1;
struct timeval t[3];
srslte_softbuffer_tx_t *softbuffers_tx[SRSLTE_MAX_CODEWORDS];
int M=1;
parse_args(argc,argv);
/* Initialise to zeros */
bzero(&pmch_tx, sizeof(srslte_pmch_t));
bzero(&pmch_rx, sizeof(srslte_pmch_t));
bzero(&pmch_cfg, sizeof(srslte_pdsch_cfg_t));
bzero(ce, sizeof(cf_t*)*SRSLTE_MAX_PORTS);
bzero(tx_slot_symbols, sizeof(cf_t*)*SRSLTE_MAX_PORTS);
bzero(rx_slot_symbols, sizeof(cf_t*)*SRSLTE_MAX_PORTS);
cell.nof_ports = 1;
srslte_ra_dl_dci_t dci;
bzero(&dci, sizeof(srslte_ra_dl_dci_t));
dci.type0_alloc.rbg_bitmask = 0xffffffff;
/* If transport block 0 is enabled */
grant.tb_en[0] = true;
grant.tb_en[1] = false;
grant.mcs[0].idx = mcs_idx;
grant.nof_prb = cell.nof_prb;
grant.sf_type = SRSLTE_SF_MBSFN;
srslte_dl_fill_ra_mcs(&grant.mcs[0], cell.nof_prb);
grant.Qm[0] = srslte_mod_bits_x_symbol(grant.mcs[0].mod);
for(int i = 0; i < 2; i++){
for(int j = 0; j < grant.nof_prb; j++){
grant.prb_idx[i][j] = true;
}
}
/* init memory */
for (i=0;i<SRSLTE_MAX_PORTS;i++) {
for (j = 0; j < SRSLTE_MAX_PORTS; j++) {
ce[i][j] = srslte_vec_malloc(sizeof(cf_t) * NOF_CE_SYMBOLS);
if (!ce[i][j]) {
perror("srslte_vec_malloc");
goto quit;
}
for (k = 0; k < NOF_CE_SYMBOLS; k++) {
ce[i][j][k] = (i == j) ? 1.0f : 0.0f;
}
}
rx_slot_symbols[i] = srslte_vec_malloc(sizeof(cf_t) * SRSLTE_SF_LEN_RE(cell.nof_prb, cell.cp));
if (!rx_slot_symbols[i]) {
perror("srslte_vec_malloc");
goto quit;
}
}
for (i = 0; i < SRSLTE_MAX_CODEWORDS; i++) {
softbuffers_tx[i] = calloc(sizeof(srslte_softbuffer_tx_t), 1);
if (!softbuffers_tx[i]) {
fprintf(stderr, "Error allocating TX soft buffer\n");
}
if (srslte_softbuffer_tx_init(softbuffers_tx[i], cell.nof_prb)) {
fprintf(stderr, "Error initiating TX soft buffer\n");
goto quit;
}
}
for (i = 0; i < cell.nof_ports; i++) {
tx_slot_symbols[i] = calloc(SRSLTE_SF_LEN_RE(cell.nof_prb, cell.cp), sizeof(cf_t));
if (!tx_slot_symbols[i]) {
perror("srslte_vec_malloc");
goto quit;
}
}
for (int i = 0; i < SRSLTE_MAX_CODEWORDS; i++) {
if (grant.tb_en[i]) {
data_tx[i] = srslte_vec_malloc(sizeof(uint8_t) * grant.mcs[i].tbs);
if (!data_tx[i]) {
perror("srslte_vec_malloc");
goto quit;
}
bzero(data_tx[i], sizeof(uint8_t) * grant.mcs[i].tbs);
data_rx[i] = srslte_vec_malloc(sizeof(uint8_t) * grant.mcs[i].tbs);
if (!data_rx[i]) {
perror("srslte_vec_malloc");
goto quit;
}
bzero(data_rx[i], sizeof(uint8_t) * grant.mcs[i].tbs);
}
}
for (i = 0; i < SRSLTE_MAX_CODEWORDS; i++) {
softbuffers_rx[i] = calloc(sizeof(srslte_softbuffer_rx_t), 1);
if (!softbuffers_rx[i]) {
fprintf(stderr, "Error allocating RX soft buffer\n");
goto quit;
}
if (srslte_softbuffer_rx_init(softbuffers_rx[i], cell.nof_prb)) {
fprintf(stderr, "Error initiating RX soft buffer\n");
goto quit;
}
}
#ifdef DO_OFDM
for (i = 0; i < cell.nof_ports; i++) {
tx_sf_symbols[i] = srslte_vec_malloc(sizeof(cf_t) * SRSLTE_SF_LEN_PRB(cell.nof_prb));
if (srslte_ofdm_tx_init_mbsfn(&ifft_mbsfn[i], SRSLTE_CP_EXT, tx_slot_symbols[i], tx_sf_symbols[i], cell.nof_prb)) {
fprintf(stderr, "Error creating iFFT object\n");
exit(-1);
}
srslte_ofdm_set_non_mbsfn_region(&ifft_mbsfn[i], non_mbsfn_region);
srslte_ofdm_set_normalize(&ifft_mbsfn[i], true);
}
for (i = 0; i < nof_rx_antennas; i++) {
rx_sf_symbols[i] = srslte_vec_malloc(sizeof(cf_t) * SRSLTE_SF_LEN_PRB(cell.nof_prb));
if (srslte_ofdm_rx_init_mbsfn(&fft_mbsfn[i], SRSLTE_CP_EXT, rx_sf_symbols[i], rx_slot_symbols[i], cell.nof_prb)) {
fprintf(stderr, "Error creating iFFT object\n");
exit(-1);
}
srslte_ofdm_set_non_mbsfn_region(&fft_mbsfn[i], non_mbsfn_region);
srslte_ofdm_set_normalize(&fft_mbsfn[i], true);
}
#endif /* DO_OFDM */
/* Configure PDSCH */
if (srslte_pmch_cfg(&pmch_cfg, cell, &grant, cfi, subframe)) {
fprintf(stderr, "Error configuring PMCH\n");
exit(-1);
}
if (srslte_pmch_cfg(&pmch_cfg, cell, &grant, cfi, subframe)) {
fprintf(stderr, "Error configuring PMCH\n");
exit(-1);
}
INFO(" Global:\n");
INFO(" nof_prb=%d\n", cell.nof_prb);
INFO(" nof_ports=%d\n", cell.nof_ports);
INFO(" id=%d\n", cell.id);
INFO(" cp=%s\n", srslte_cp_string(cell.cp));
INFO(" phich_length=%d\n", (int) cell.phich_length);
INFO(" phich_resources=%d\n", (int) cell.phich_resources);
INFO(" nof_prb=%d\n", pmch_cfg.grant.nof_prb);
INFO(" sf_idx=%d\n", pmch_cfg.sf_idx);
INFO(" mimo_type=%s\n", srslte_mimotype2str(pmch_cfg.mimo_type));
INFO(" nof_layers=%d\n", pmch_cfg.nof_layers);
INFO(" nof_tb=%d\n", SRSLTE_RA_DL_GRANT_NOF_TB(&pmch_cfg.grant));
INFO(" Qm=%d\n", pmch_cfg.grant.Qm[0]);
INFO(" mcs.idx=0x%X\n", pmch_cfg.grant.mcs[0].idx);
INFO(" mcs.tbs=%d\n", pmch_cfg.grant.mcs[0].tbs);
INFO(" mcs.mod=%s\n", srslte_mod_string(pmch_cfg.grant.mcs[0].mod));
INFO(" rv=%d\n", pmch_cfg.rv[0]);
INFO(" lstart=%d\n", pmch_cfg.nbits[0].lstart);
INFO(" nof_bits=%d\n", pmch_cfg.nbits[0].nof_bits);
INFO(" nof_re=%d\n", pmch_cfg.nbits[0].nof_re);
INFO(" nof_symb=%d\n", pmch_cfg.nbits[0].nof_symb);
if (srslte_pmch_init(&pmch_tx, cell.nof_prb)) {
fprintf(stderr, "Error creating PMCH object\n");
}
srslte_pmch_set_area_id(&pmch_tx, mbsfn_area_id);
if (srslte_pmch_init(&pmch_rx, cell.nof_prb)) {
fprintf(stderr, "Error creating PMCH object\n");
}
srslte_pmch_set_area_id(&pmch_rx, mbsfn_area_id);
for (int tb = 0; tb < SRSLTE_MAX_CODEWORDS; tb++) {
if (grant.tb_en[tb]) {
for (int byte = 0; byte < grant.mcs[tb].tbs / 8; byte++) {
data_tx[tb][byte] = (uint8_t) (rand() % 256);
}
}
}
if (srslte_pmch_encode(&pmch_tx, &pmch_cfg, softbuffers_tx[0], data_tx[0], mbsfn_area_id, tx_slot_symbols)) {
fprintf(stderr, "Error encoding PDSCH\n");
exit(-1);
}
gettimeofday(&t[2], NULL);
get_time_interval(t);
printf("ENCODED in %.2f (PHY bitrate=%.2f Mbps. Processing bitrate=%.2f Mbps)\n",
(float) t[0].tv_usec/M, (float) (grant.mcs[0].tbs + grant.mcs[1].tbs)/1000.0f,
(float) (grant.mcs[0].tbs + grant.mcs[1].tbs)*M/t[0].tv_usec);
#ifdef DO_OFDM
for (i = 0; i < cell.nof_ports; i++) {
/* For each Tx antenna modulate OFDM */
srslte_ofdm_tx_sf(&ifft_mbsfn[i]);
}
/* combine outputs */
for (j = 0; j < nof_rx_antennas; j++) {
for (k = 0; k < NOF_CE_SYMBOLS; k++) {
rx_sf_symbols[j][k] = 0.0f;
for (i = 0; i < cell.nof_ports; i++) {
rx_sf_symbols[j][k] += tx_sf_symbols[i][k] * ce[i][j][k];
}
}
}
#else
/* combine outputs */
for (j = 0; j < nof_rx_antennas; j++) {
for (k = 0; k < SRSLTE_SF_LEN_RE(cell.nof_prb, cell.cp); k++) {
rx_slot_symbols[j][k] = 0.0f;
for (i = 0; i < cell.nof_ports; i++) {
rx_slot_symbols[j][k] += tx_slot_symbols[i][k] * ce[i][j][k];
}
}
}
#endif
int r=0;
gettimeofday(&t[1], NULL);
#ifdef DO_OFDM
/* For each Rx antenna demodulate OFDM */
for (i = 0; i < nof_rx_antennas; i++) {
srslte_ofdm_rx_sf(&fft_mbsfn[i]);
}
#endif
for (i = 0; i < SRSLTE_MAX_CODEWORDS; i++) {
if (grant.tb_en[i]) {
srslte_softbuffer_rx_reset_tbs(softbuffers_rx[i], (uint32_t) grant.mcs[i].tbs);
}
}
r = srslte_pmch_decode(&pmch_rx, &pmch_cfg, softbuffers_rx[0],rx_slot_symbols[0], ce[0],0,mbsfn_area_id, data_rx[0]);
gettimeofday(&t[2], NULL);
get_time_interval(t);
printf("DECODED %s in %.2f (PHY bitrate=%.2f Mbps. Processing bitrate=%.2f Mbps)\n", r?"Error":"OK",
(float) t[0].tv_usec/M, (float) (grant.mcs[0].tbs + grant.mcs[1].tbs)/1000.0f,
(float) (grant.mcs[0].tbs + grant.mcs[1].tbs)*M/t[0].tv_usec);
/* If there is an error in PDSCH decode */
if (r) {
ret = -1;
goto quit;
}
/* Check Tx and Rx bytes */
for (int tb = 0; tb < SRSLTE_MAX_CODEWORDS; tb++) {
if (grant.tb_en[tb]) {
for (int byte = 0; byte < grant.mcs[tb].tbs / 8; byte++) {
if (data_tx[tb][byte] != data_rx[tb][byte]) {
ERROR("Found BYTE error in TB %d (%02X != %02X), quiting...", tb, data_tx[tb][byte], data_rx[tb][byte]);
ret = SRSLTE_ERROR;
goto quit;
}
}
}
}
ret = SRSLTE_SUCCESS;
quit:
srslte_pmch_free(&pmch_tx);
srslte_pmch_free(&pmch_rx);
for (i = 0; i < SRSLTE_MAX_CODEWORDS; i++) {
srslte_softbuffer_tx_free(softbuffers_tx[i]);
if (softbuffers_tx[i]) {
free(softbuffers_tx[i]);
}
srslte_softbuffer_rx_free(softbuffers_rx[i]);
if (softbuffers_rx[i]) {
free(softbuffers_rx[i]);
}
if (data_tx[i]) {
free(data_tx[i]);
}
if (data_rx[i]) {
free(data_rx[i]);
}
}
for (i=0;i<SRSLTE_MAX_PORTS;i++) {
for (j = 0; j < SRSLTE_MAX_PORTS; j++) {
if (ce[i][j]) {
free(ce[i][j]);
}
}
if (tx_slot_symbols[i]) {
free(tx_slot_symbols[i]);
}
if (rx_slot_symbols[i]) {
free(rx_slot_symbols[i]);
}
}
if (ret) {
printf("Error\n");
} else {
printf("Ok\n");
}
exit(ret);
}
void base_init() {
int i;
/* Select transmission mode */
if (srslte_str2mimotype(mimo_type_str, &pdsch_cfg.mimo_type)) {
ERROR("Wrong transmission mode! Allowed modes: single, diversity, cdd and multiplex");
exit(-1);
}
/* Configure cell and PDSCH in function of the transmission mode */
switch(pdsch_cfg.mimo_type) {
case SRSLTE_MIMO_TYPE_SINGLE_ANTENNA:
cell.nof_ports = 1;
break;
case SRSLTE_MIMO_TYPE_TX_DIVERSITY:
cell.nof_ports = 2;
break;
case SRSLTE_MIMO_TYPE_CDD:
cell.nof_ports = 2;
break;
case SRSLTE_MIMO_TYPE_SPATIAL_MULTIPLEX:
cell.nof_ports = 2;
break;
default:
ERROR("Transmission mode not implemented.");
exit(-1);
}
/* Allocate memory */
for(i = 0; i < SRSLTE_MAX_CODEWORDS; i++) {
data[i] = srslte_vec_malloc(sizeof(uint8_t) * SOFTBUFFER_SIZE);
if (!data[i]) {
perror("malloc");
exit(-1);
}
bzero(data[i], sizeof(uint8_t) * SOFTBUFFER_SIZE);
}
data_mbms = srslte_vec_malloc(sizeof(uint8_t) * SOFTBUFFER_SIZE);
/* init memory */
for (i = 0; i < SRSLTE_MAX_PORTS; i++) {
sf_buffer[i] = srslte_vec_malloc(sizeof(cf_t) * sf_n_re);
if (!sf_buffer[i]) {
perror("malloc");
exit(-1);
}
}
for (i = 0; i < SRSLTE_MAX_PORTS; i++) {
output_buffer[i] = srslte_vec_malloc(sizeof(cf_t) * sf_n_samples);
if (!output_buffer[i]) {
perror("malloc");
exit(-1);
}
bzero(output_buffer[i], sizeof(cf_t) * sf_n_samples);
}
/* open file or USRP */
if (output_file_name) {
if (strcmp(output_file_name, "NULL")) {
if (srslte_filesink_init(&fsink, output_file_name, SRSLTE_COMPLEX_FLOAT_BIN)) {
fprintf(stderr, "Error opening file %s\n", output_file_name);
exit(-1);
}
null_file_sink = false;
} else {
null_file_sink = true;
}
} else {
#ifndef DISABLE_RF
printf("Opening RF device...\n");
if (srslte_rf_open_multi(&rf, rf_args, cell.nof_ports)) {
fprintf(stderr, "Error opening rf\n");
exit(-1);
}
#else
printf("Error RF not available. Select an output file\n");
exit(-1);
#endif
}
if (net_port > 0) {
if (srslte_netsource_init(&net_source, "127.0.0.1", net_port, SRSLTE_NETSOURCE_UDP)) {
fprintf(stderr, "Error creating input UDP socket at port %d\n", net_port);
exit(-1);
}
if (null_file_sink) {
if (srslte_netsink_init(&net_sink, "127.0.0.1", net_port+1, SRSLTE_NETSINK_TCP)) {
fprintf(stderr, "Error sink\n");
exit(-1);
}
}
if (sem_init(&net_sem, 0, 1)) {
perror("sem_init");
exit(-1);
}
}
/* create ifft object */
for (i = 0; i < cell.nof_ports; i++) {
if (srslte_ofdm_tx_init(&ifft[i], SRSLTE_CP_NORM, sf_buffer[i], output_buffer[i], cell.nof_prb)) {
fprintf(stderr, "Error creating iFFT object\n");
exit(-1);
}
srslte_ofdm_set_normalize(&ifft[i], true);
}
if (srslte_ofdm_tx_init_mbsfn(&ifft_mbsfn, SRSLTE_CP_EXT, sf_buffer[0], output_buffer[0], cell.nof_prb)) {
fprintf(stderr, "Error creating iFFT object\n");
exit(-1);
}
srslte_ofdm_set_non_mbsfn_region(&ifft_mbsfn, 2);
srslte_ofdm_set_normalize(&ifft_mbsfn, true);
if (srslte_pbch_init(&pbch)) {
fprintf(stderr, "Error creating PBCH object\n");
exit(-1);
}
if (srslte_pbch_set_cell(&pbch, cell)) {
fprintf(stderr, "Error creating PBCH object\n");
exit(-1);
}
if (srslte_regs_init(®s, cell)) {
fprintf(stderr, "Error initiating regs\n");
exit(-1);
}
if (srslte_pcfich_init(&pcfich, 1)) {
fprintf(stderr, "Error creating PBCH object\n");
exit(-1);
}
if (srslte_pcfich_set_cell(&pcfich, ®s, cell)) {
fprintf(stderr, "Error creating PBCH object\n");
exit(-1);
}
if (srslte_pdcch_init_enb(&pdcch, cell.nof_prb)) {
fprintf(stderr, "Error creating PDCCH object\n");
exit(-1);
}
if (srslte_pdcch_set_cell(&pdcch, ®s, cell)) {
fprintf(stderr, "Error creating PDCCH object\n");
exit(-1);
}
if (srslte_pdsch_init_enb(&pdsch, cell.nof_prb)) {
fprintf(stderr, "Error creating PDSCH object\n");
exit(-1);
}
if (srslte_pdsch_set_cell(&pdsch, cell)) {
fprintf(stderr, "Error creating PDSCH object\n");
exit(-1);
}
srslte_pdsch_set_rnti(&pdsch, UE_CRNTI);
if(mbsfn_area_id > -1){
if (srslte_pmch_init(&pmch, cell.nof_prb)) {
fprintf(stderr, "Error creating PMCH object\n");
}
srslte_pmch_set_area_id(&pmch, mbsfn_area_id);
}
for (i = 0; i < SRSLTE_MAX_CODEWORDS; i++) {
softbuffers[i] = calloc(sizeof(srslte_softbuffer_tx_t), 1);
if (!softbuffers[i]) {
fprintf(stderr, "Error allocating soft buffer\n");
exit(-1);
}
if (srslte_softbuffer_tx_init(softbuffers[i], cell.nof_prb)) {
fprintf(stderr, "Error initiating soft buffer\n");
exit(-1);
}
}
}
int srslte_enb_dl_init(srslte_enb_dl_t *q, cf_t *out_buffer[SRSLTE_MAX_PORTS], uint32_t max_prb)
{
int ret = SRSLTE_ERROR_INVALID_INPUTS;
if (q != NULL)
{
ret = SRSLTE_ERROR;
bzero(q, sizeof(srslte_enb_dl_t));
for (int i=0;i<SRSLTE_MAX_PORTS;i++) {
q->sf_symbols[i] = srslte_vec_malloc(SRSLTE_SF_LEN_RE(max_prb, SRSLTE_CP_NORM) * sizeof(cf_t));
if (!q->sf_symbols[i]) {
perror("malloc");
goto clean_exit;
}
}
for (int i = 0; i < SRSLTE_MAX_PORTS; i++) {
if (srslte_ofdm_tx_init(&q->ifft[i], SRSLTE_CP_NORM, q->sf_symbols[i], out_buffer[i], max_prb)) {
ERROR("Error initiating FFT (%d)\n", i);
goto clean_exit;
}
}
if (srslte_ofdm_tx_init_mbsfn(&q->ifft_mbsfn, SRSLTE_CP_EXT, q->sf_symbols[0], out_buffer[0], max_prb)) {
ERROR("Error initiating FFT \n");
goto clean_exit;
}
if (srslte_pbch_init(&q->pbch)) {
ERROR("Error creating PBCH object\n");
goto clean_exit;
}
if (srslte_pcfich_init(&q->pcfich, 0)) {
ERROR("Error creating PCFICH object\n");
goto clean_exit;
}
if (srslte_phich_init(&q->phich, 0)) {
ERROR("Error creating PHICH object\n");
goto clean_exit;
}
int mbsfn_area_id = 1;
if (srslte_pmch_init(&q->pmch, max_prb, 1)) {
ERROR("Error creating PMCH object\n");
}
srslte_pmch_set_area_id(&q->pmch, mbsfn_area_id);
if (srslte_pdcch_init_enb(&q->pdcch, max_prb)) {
ERROR("Error creating PDCCH object\n");
goto clean_exit;
}
if (srslte_pdsch_init_enb(&q->pdsch, max_prb)) {
ERROR("Error creating PDSCH object\n");
goto clean_exit;
}
if (srslte_refsignal_cs_init(&q->csr_signal, max_prb)) {
ERROR("Error initializing CSR signal (%d)\n", ret);
goto clean_exit;
}
if (srslte_refsignal_mbsfn_init(&q->mbsfnr_signal, max_prb)) {
ERROR("Error initializing CSR signal (%d)\n", ret);
goto clean_exit;
}
ret = SRSLTE_SUCCESS;
} else {
ERROR("Invalid parameters\n");
}
clean_exit:
if (ret == SRSLTE_ERROR) {
srslte_enb_dl_free(q);
}
return ret;
}
int srslte_ue_dl_init(srslte_ue_dl_t* q, cf_t* in_buffer[SRSLTE_MAX_PORTS], uint32_t max_prb, uint32_t nof_rx_antennas)
{
int ret = SRSLTE_ERROR_INVALID_INPUTS;
if (q != NULL && nof_rx_antennas <= SRSLTE_MAX_PORTS) {
ret = SRSLTE_ERROR;
bzero(q, sizeof(srslte_ue_dl_t));
q->pending_ul_dci_count = 0;
q->nof_rx_antennas = nof_rx_antennas;
q->mi_auto = true;
q->mi_manual_index = 0;
q->pregen_rnti = 0;
for (int j = 0; j < SRSLTE_MAX_PORTS; j++) {
q->sf_symbols[j] = srslte_vec_malloc(MAX_SFLEN_RE * sizeof(cf_t));
if (!q->sf_symbols[j]) {
perror("malloc");
goto clean_exit;
}
}
for (int i = 0; i < nof_rx_antennas; i++) {
if (srslte_ofdm_rx_init(&q->fft[i], SRSLTE_CP_NORM, in_buffer[i], q->sf_symbols[i], max_prb)) {
ERROR("Error initiating FFT\n");
goto clean_exit;
}
}
if (srslte_ofdm_rx_init_mbsfn(&q->fft_mbsfn, SRSLTE_CP_EXT, in_buffer[0], q->sf_symbols[0], max_prb)) {
ERROR("Error initiating FFT for MBSFN subframes \n");
goto clean_exit;
}
srslte_ofdm_set_non_mbsfn_region(&q->fft_mbsfn, 2); // Set a default to init
if (srslte_chest_dl_init(&q->chest, max_prb, nof_rx_antennas)) {
ERROR("Error initiating channel estimator\n");
goto clean_exit;
}
if (srslte_chest_dl_res_init(&q->chest_res, max_prb)) {
ERROR("Error initiating channel estimator\n");
goto clean_exit;
}
if (srslte_pcfich_init(&q->pcfich, nof_rx_antennas)) {
ERROR("Error creating PCFICH object\n");
goto clean_exit;
}
if (srslte_phich_init(&q->phich, nof_rx_antennas)) {
ERROR("Error creating PHICH object\n");
goto clean_exit;
}
if (srslte_pdcch_init_ue(&q->pdcch, max_prb, nof_rx_antennas)) {
ERROR("Error creating PDCCH object\n");
goto clean_exit;
}
if (srslte_pdsch_init_ue(&q->pdsch, max_prb, nof_rx_antennas)) {
ERROR("Error creating PDSCH object\n");
goto clean_exit;
}
if (srslte_pmch_init(&q->pmch, max_prb, nof_rx_antennas)) {
ERROR("Error creating PMCH object\n");
goto clean_exit;
}
ret = SRSLTE_SUCCESS;
} else {
ERROR("Invalid parameters\n");
}
clean_exit:
if (ret == SRSLTE_ERROR) {
srslte_ue_dl_free(q);
}
return ret;
}
