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srsRAN_4G
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Fix multiple issues with DCI sizes when using CA.

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master
Ismael Gomez 5 years ago
parent a5b7dcdf16
commit 72e6fa40fc
5 changed files with 49 additions and 34 deletions
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21
lib/src/phy/phch/dci.c
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@ -148,8 +148,10 @@ static uint32_t dci_format0_sizeof_(srslte_cell_t* cell, srslte_dl_sf_cfg_t* sf,
/* SRS request – 0 or 1 bit */
n += (cfg->srs_request_enabled) ? 1 : 0;
/* Resource allocation type – 1 bit (N^UL_RB ≤ N^DL_RB) */
n += (cfg->ra_format_enabled) ? 1 : 0;
/* Resource allocation type – 1 bit (N^UL_RB ≤ N^DL_RB)
* This is a release10 field only, but it is backwards compatible to release 8 because a padding bit will be added.
*/
n++;
return n;
}
@ -484,13 +486,6 @@ static int dci_format0_unpack(srslte_cell_t* cell,
uint8_t* y = msg->payload;
uint32_t n_ul_hop;
/* Make sure it's a SRSLTE_DCI_FORMAT0 message */
uint32_t msg_len = srslte_dci_format_sizeof(cell, sf, cfg, SRSLTE_DCI_FORMAT0);
if (msg->nof_bits != msg_len) {
ERROR("Invalid message length for format 0 (%d != %d)\n", msg->nof_bits, msg_len);
return SRSLTE_ERROR;
}
if (cfg->cif_enabled) {
dci->cif = srslte_bit_pack(&y, 3);
dci->cif_present = true;
@ -624,7 +619,7 @@ static int dci_format1_pack(srslte_cell_t* cell,
msg->nof_bits = (y - msg->payload);
if (msg->nof_bits != dci_format1_sizeof(cell, sf, cfg)) {
ERROR("Invalid message length for format 1A (Cross scheduling %s)\n", dci->cif_present ? "enabled" : "disabled");
ERROR("Invalid message length for format 1 (Cross scheduling %s)\n", dci->cif_present ? "enabled" : "disabled");
}
return SRSLTE_SUCCESS;
@ -782,12 +777,6 @@ static int dci_format1As_unpack(srslte_cell_t* cell,
/* pack bits */
uint8_t* y = msg->payload;
/* Make sure it's a SRSLTE_DCI_FORMAT0 message */
if (msg->nof_bits != srslte_dci_format_sizeof(cell, sf, cfg, SRSLTE_DCI_FORMAT1A)) {
ERROR("Invalid message length for format 1A (Cross scheduling %s)\n", cfg->cif_enabled ? "enabled" : "disabled");
return SRSLTE_ERROR;
}
if (cfg->cif_enabled) {
dci->cif = srslte_bit_pack(&y, 3);
dci->cif_present = true;

51
lib/src/phy/ue/ue_dl.c
Unescape Escape View File

@ -539,7 +539,7 @@ static int find_dl_dci_type_siprarnti(srslte_ue_dl_t* q,
{
int ret = 0;
srslte_dci_cfg_t* dci_cfg = &dl_cfg->cfg.dci;
srslte_dci_cfg_t dci_cfg = dl_cfg->cfg.dci;
// Configure and run DCI blind search
dci_blind_search_t search_space;
@ -550,11 +550,16 @@ static int find_dl_dci_type_siprarnti(srslte_ue_dl_t* q,
sf->tti,
sf->cfi,
rnti);
// Disable extended CSI request and SRS request for non C-RNTI
dci_cfg.multiple_csi_request_enabled = false;
dci_cfg.srs_request_enabled = false;
// Search for RNTI only if there is room for the common search space
if (search_space.nof_locations > 0) {
for (uint32_t f = 0; f < nof_common_formats; f++) {
search_space.format = common_formats[f];
if ((ret = dci_blind_search(q, sf, rnti, &search_space, dci_cfg, dci_msg))) {
if ((ret = dci_blind_search(q, sf, rnti, &search_space, &dci_cfg, dci_msg))) {
return ret;
}
}
@ -575,9 +580,33 @@ static int find_dl_dci_type_crnti(srslte_ue_dl_t* q,
uint32_t sf_idx = sf->tti % 10;
uint32_t cfi = sf->cfi;
srslte_dci_cfg_t* dci_cfg = &cfg->cfg.dci;
srslte_dci_cfg_t dci_cfg = cfg->cfg.dci;
// Search first Common SS
// Disable extended CSI request and SRS request in common SS
dci_cfg.multiple_csi_request_enabled = false;
dci_cfg.srs_request_enabled = false;
// Search Format 1A in the Common SS also
if (q->pregen_rnti == rnti) {
current_ss = &q->current_ss_common[MI_IDX(sf_idx)][cfi - 1];
} else {
// If locations are not pre-generated, generate them now
current_ss->nof_locations = srslte_pdcch_common_locations(&q->pdcch, current_ss->loc, MAX_CANDIDATES_COM, cfi);
}
// Search for RNTI only if there is room for the common search space
if (current_ss->nof_locations > 0) {
current_ss->format = SRSLTE_DCI_FORMAT1A;
INFO("Searching DL C-RNTI in %d ue locations, format 1A\n", current_ss->nof_locations);
if ((ret = dci_blind_search(q, sf, rnti, current_ss, &dci_cfg, dci_msg))) {
return ret;
}
}
// Search UE-specific search space
dci_cfg = cfg->cfg.dci;
if (q->pregen_rnti == rnti) {
current_ss = &q->current_ss_ue[MI_IDX(sf_idx)][cfi - 1][sf_idx];
} else {
@ -595,25 +624,11 @@ static int find_dl_dci_type_crnti(srslte_ue_dl_t* q,
INFO("Searching DL C-RNTI %s in %d ue locations\n", srslte_dci_format_string(format), current_ss->nof_locations);
current_ss->format = format;
if ((ret = dci_blind_search(q, sf, rnti, current_ss, dci_cfg, dci_msg))) {
if ((ret = dci_blind_search(q, sf, rnti, current_ss, &dci_cfg, dci_msg))) {
return ret;
}
}
// Search Format 1A in the Common SS also
if (q->pregen_rnti == rnti) {
current_ss = &q->current_ss_common[MI_IDX(sf_idx)][cfi - 1];
} else {
// If locations are not pre-generated, generate them now
current_ss->nof_locations = srslte_pdcch_common_locations(&q->pdcch, current_ss->loc, MAX_CANDIDATES_COM, cfi);
}
// Search for RNTI only if there is room for the common search space
if (current_ss->nof_locations > 0) {
current_ss->format = SRSLTE_DCI_FORMAT1A;
INFO("Searching DL C-RNTI in %d ue locations, format 1A\n", current_ss->nof_locations);
return dci_blind_search(q, sf, rnti, current_ss, dci_cfg, dci_msg);
}
return SRSLTE_SUCCESS;
}

1
srsue/hdr/phy/cc_worker.h
Unescape Escape View File

@ -48,6 +48,7 @@ public:
void set_tdd_config(srslte_tdd_config_t config);
void set_config(srslte::phy_cfg_t& phy_cfg);
void upd_config_dci(srslte_dci_cfg_t& dci_cfg);
void set_crnti(uint16_t rnti);
void enable_pregen_signals(bool enabled);

5
srsue/src/phy/cc_worker.cc
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@ -916,6 +916,11 @@ void cc_worker::set_config(srslte::phy_cfg_t& phy_cfg)
}
}
void cc_worker::upd_config_dci(srslte_dci_cfg_t &dci_cfg)
{
ue_dl_cfg.cfg.dci = dci_cfg;
}
int cc_worker::read_ce_abs(float* ce_abs, uint32_t tx_antenna, uint32_t rx_antenna)
{
int sz = srslte_symbol_sz(cell.nof_prb);

5
srsue/src/phy/sf_worker.cc
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@ -186,6 +186,11 @@ void sf_worker::set_config(uint32_t cc_idx, srslte::phy_cfg_t& phy_cfg)
if (cc_idx < cc_workers.size()) {
Info("Setting configuration for cc_worker=%d, cc=%d\n", get_id(), cc_idx);
cc_workers[cc_idx]->set_config(phy_cfg);
if (cc_idx > 0) {
// Update DCI config for PCell
srslte_dci_cfg_t dci_cfg = phy_cfg.dl_cfg.dci;
cc_workers[0]->upd_config_dci(dci_cfg);
}
} else {
Error("Setting config for cc=%d; Invalid cc_idx\n", cc_idx);
}

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