int srslte_ue_dl_set_cell(srslte_ue_dl_t* q, srslte_cell_t cell)
{
int ret = SRSLTE_ERROR_INVALID_INPUTS;
if (q != NULL && srslte_cell_isvalid(&cell)) {
q->pending_ul_dci_count = 0;
if (q->cell.id != cell.id || q->cell.nof_prb == 0) {
if (q->cell.nof_prb != 0) {
for (int i = 0; i < MI_NOF_REGS; i++) {
srslte_regs_free(&q->regs[i]);
}
}
q->cell = cell;
for (int i = 0; i < MI_NOF_REGS; i++) {
if (srslte_regs_init_opts(&q->regs[i], q->cell, mi_reg_idx[i % 3], i > 2)) {
ERROR("Error resizing REGs\n");
return SRSLTE_ERROR;
}
}
for (int port = 0; port < q->nof_rx_antennas; port++) {
if (srslte_ofdm_rx_set_prb(&q->fft[port], q->cell.cp, q->cell.nof_prb)) {
ERROR("Error resizing FFT\n");
return SRSLTE_ERROR;
}
}
// In TDD, initialize PDCCH and PHICH for the worst case: max ncces and phich groupds respectively
uint32_t pdcch_init_reg = 0;
uint32_t phich_init_reg = 0;
if (q->cell.frame_type == SRSLTE_TDD) {
pdcch_init_reg = 1; // mi=0
phich_init_reg = 2; // mi=2
}
if (srslte_ofdm_rx_set_prb(&q->fft_mbsfn, SRSLTE_CP_EXT, q->cell.nof_prb)) {
ERROR("Error resizing MBSFN FFT\n");
return SRSLTE_ERROR;
}
if (srslte_chest_dl_set_cell(&q->chest, q->cell)) {
ERROR("Error resizing channel estimator\n");
return SRSLTE_ERROR;
}
if (srslte_pcfich_set_cell(&q->pcfich, &q->regs[0], q->cell)) {
ERROR("Error resizing PCFICH object\n");
return SRSLTE_ERROR;
}
if (srslte_phich_set_cell(&q->phich, &q->regs[phich_init_reg], q->cell)) {
ERROR("Error resizing PHICH object\n");
return SRSLTE_ERROR;
}
if (srslte_pdcch_set_cell(&q->pdcch, &q->regs[pdcch_init_reg], q->cell)) {
ERROR("Error resizing PDCCH object\n");
return SRSLTE_ERROR;
}
if (srslte_pdsch_set_cell(&q->pdsch, q->cell)) {
ERROR("Error resizing PDSCH object\n");
return SRSLTE_ERROR;
}
if (srslte_pmch_set_cell(&q->pmch, q->cell)) {
ERROR("Error resizing PMCH object\n");
return SRSLTE_ERROR;
}
}
if (q->pregen_rnti) {
srslte_ue_dl_set_rnti(q, q->pregen_rnti);
}
ret = SRSLTE_SUCCESS;
} else {
ERROR("Invalid cell properties ue_dl: Id=%d, Ports=%d, PRBs=%d\n", q->cell.id, q->cell.nof_ports, q->cell.nof_prb);
}
return ret;
}
int srslte_enb_dl_set_cell(srslte_enb_dl_t *q, srslte_cell_t cell)
{
int ret = SRSLTE_ERROR_INVALID_INPUTS;
if (q != NULL &&
srslte_cell_isvalid(&cell))
{
if (q->cell.id != cell.id || q->cell.nof_prb == 0) {
if (q->cell.nof_prb != 0) {
srslte_regs_free(&q->regs);
}
q->cell = cell;
if (srslte_regs_init(&q->regs, q->cell)) {
ERROR("Error resizing REGs\n");
return SRSLTE_ERROR;
}
for (int i = 0; i < q->cell.nof_ports; i++) {
if (srslte_ofdm_tx_set_prb(&q->ifft[i], q->cell.cp, q->cell.nof_prb)) {
ERROR("Error re-planning iFFT (%d)\n", i);
return SRSLTE_ERROR;
}
}
if (srslte_ofdm_tx_set_prb(&q->ifft_mbsfn, SRSLTE_CP_EXT, q->cell.nof_prb)) {
ERROR("Error re-planning ifft_mbsfn\n");
return SRSLTE_ERROR;
}
srslte_ofdm_set_non_mbsfn_region(&q->ifft_mbsfn, 2);
if (srslte_pbch_set_cell(&q->pbch, q->cell)) {
ERROR("Error creating PBCH object\n");
return SRSLTE_ERROR;
}
if (srslte_pcfich_set_cell(&q->pcfich, &q->regs, q->cell)) {
ERROR("Error creating PCFICH object\n");
return SRSLTE_ERROR;
}
if (srslte_phich_set_cell(&q->phich, &q->regs, q->cell)) {
ERROR("Error creating PHICH object\n");
return SRSLTE_ERROR;
}
if (srslte_pdcch_set_cell(&q->pdcch, &q->regs, q->cell)) {
ERROR("Error creating PDCCH object\n");
return SRSLTE_ERROR;
}
if (srslte_pdsch_set_cell(&q->pdsch, q->cell)) {
ERROR("Error creating PDSCH object\n");
return SRSLTE_ERROR;
}
if (srslte_pmch_set_cell(&q->pmch, q->cell)) {
ERROR("Error creating PMCH object\n");
return SRSLTE_ERROR;
}
if (srslte_refsignal_cs_set_cell(&q->csr_signal, q->cell)) {
ERROR("Error initializing CSR signal (%d)\n", ret);
return SRSLTE_ERROR;
}
int mbsfn_area_id = 1;
if (srslte_refsignal_mbsfn_set_cell(&q->mbsfnr_signal, q->cell, mbsfn_area_id)) {
ERROR("Error initializing MBSFNR signal (%d)\n", ret);
return SRSLTE_ERROR;
}
/* Generate PSS/SSS signals */
srslte_pss_generate(q->pss_signal, cell.id%3);
srslte_sss_generate(q->sss_signal0, q->sss_signal5, cell.id);
}
ret = SRSLTE_SUCCESS;
} else {
ERROR("Invalid cell properties: Id=%d, Ports=%d, PRBs=%d\n", cell.id, cell.nof_ports, cell.nof_prb);
}
return ret;
}
int srslte_ue_dl_set_cell(srslte_ue_dl_t *q, srslte_cell_t cell)
{
int ret = SRSLTE_ERROR_INVALID_INPUTS;
if (q != NULL &&
srslte_cell_isvalid(&cell))
{
q->pkt_errors = 0;
q->pkts_total = 0;
q->pending_ul_dci_rnti = 0;
q->sample_offset = 0;
if (q->cell.id != cell.id || q->cell.nof_prb == 0) {
if (q->cell.nof_prb != 0) {
srslte_regs_free(&q->regs);
}
memcpy(&q->cell, &cell, sizeof(srslte_cell_t));
if (srslte_regs_init(&q->regs, q->cell)) {
fprintf(stderr, "Error resizing REGs\n");
return SRSLTE_ERROR;
}
if (srslte_cfo_resize(&q->sfo_correct, q->cell.nof_prb*SRSLTE_NRE)) {
fprintf(stderr, "Error resizing SFO correct\n");
return SRSLTE_ERROR;
}
srslte_cfo_set_tol(&q->sfo_correct, 1e-5f/q->fft[0].symbol_sz);
for (int port = 0; port < q->nof_rx_antennas; port++) {
if (srslte_ofdm_rx_set_prb(&q->fft[port], q->cell.cp, q->cell.nof_prb)) {
fprintf(stderr, "Error resizing FFT\n");
return SRSLTE_ERROR;
}
}
if (srslte_chest_dl_set_cell(&q->chest, q->cell)) {
fprintf(stderr, "Error resizing channel estimator\n");
return SRSLTE_ERROR;
}
if (srslte_pcfich_set_cell(&q->pcfich, &q->regs, q->cell)) {
fprintf(stderr, "Error resizing PCFICH object\n");
return SRSLTE_ERROR;
}
if (srslte_phich_set_cell(&q->phich, &q->regs, q->cell)) {
fprintf(stderr, "Error resizing PHICH object\n");
return SRSLTE_ERROR;
}
if (srslte_pdcch_set_cell(&q->pdcch, &q->regs, q->cell)) {
fprintf(stderr, "Error resizing PDCCH object\n");
return SRSLTE_ERROR;
}
if (srslte_pdsch_set_cell(&q->pdsch, q->cell)) {
fprintf(stderr, "Error creating PDSCH object\n");
return SRSLTE_ERROR;
}
q->current_rnti = 0;
}
ret = SRSLTE_SUCCESS;
} else {
fprintf(stderr, "Invalid cell properties ue_dl: Id=%d, Ports=%d, PRBs=%d\n",
cell.id, cell.nof_ports, cell.nof_prb);
}
return ret;
}
