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Changes made to gNB cause emulated-L1 mode not to work for multiple UEs.

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It seems that the RA procedure in the gNB was modified so
the RAR is sent in a single tx_data_req. The emualted mode
was not previously handling this. We now only process the
PDU in the rx_ind that has a matching preamble. If any
other PDUs exist, we ignore them and only build Msg3 based
on this single matching RAR PDU.

Also, two bug fixes applied here in the emulate-l1 mode.
This commit is contained in:
Melissa Elkadi
2022-02-08 11:59:04 -08:00
parent f518b9d61f
commit b897287d1f
2 changed files with 16 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
+12
View File
@@ -3809,6 +3809,18 @@ int nr_ue_process_rar(nr_downlink_indication_t *dl_info, NR_UL_TIME_ALIGNMENT_t
LOG_A(NR_MAC, "[UE %d][RAPROC][%d.%d] Found RAR with the intended RAPID %d\n", mod_id, frame, slot, rarh->RAPID);
rar = (NR_MAC_RAR *) (dlsch_buffer + n_subheaders + (n_subPDUs - 1) * sizeof(NR_MAC_RAR));
ra->RA_RAPID_found = 1;
if (get_softmodem_params()->emulate_l1) {
LOG_I(NR_MAC, "If we found the RAR, the other PDUs are for other UEs and we dont need to process. "
"Only save rx_indication_body[%d] as only PDU in RX_indication\n", pdu_id);
dl_info->rx_ind->number_pdus = 1;
if (pdu_id != 0) {
memcpy(&dl_info->rx_ind->rx_indication_body[0],
&dl_info->rx_ind->rx_indication_body[pdu_id],
sizeof(fapi_nr_rx_indication_body_t));
}
mac->nr_ue_emul_l1.expected_rar = false;
memset(mac->nr_ue_emul_l1.index_has_rar, 0, sizeof(mac->nr_ue_emul_l1.index_has_rar));
}
break;
}
if (rarh->E == 0) {
openair2/NR_UE_PHY_INTERFACE/NR_IF_Module.c
+4 -4
View File
@@ -292,11 +292,11 @@ static void copy_dl_tti_req_to_dl_info(nr_downlink_indication_t *dl_info, nfapi_
{
NR_UE_MAC_INST_t *mac = get_mac_inst(dl_info->module_id);
mac->nr_ue_emul_l1.expected_sib = false;
memset(mac->nr_ue_emul_l1.index_has_sib, 0, sizeof(*mac->nr_ue_emul_l1.index_has_sib));
memset(mac->nr_ue_emul_l1.index_has_sib, 0, sizeof(mac->nr_ue_emul_l1.index_has_sib));
mac->nr_ue_emul_l1.expected_rar = false;
memset(mac->nr_ue_emul_l1.index_has_rar, 0, sizeof(*mac->nr_ue_emul_l1.index_has_rar));
memset(mac->nr_ue_emul_l1.index_has_rar, 0, sizeof(mac->nr_ue_emul_l1.index_has_rar));
mac->nr_ue_emul_l1.expected_dci = false;
memset(mac->nr_ue_emul_l1.index_has_dci, 0, sizeof(*mac->nr_ue_emul_l1.index_has_dci));
memset(mac->nr_ue_emul_l1.index_has_dci, 0, sizeof(mac->nr_ue_emul_l1.index_has_dci));
int pdu_idx = 0;
int num_pdus = dl_tti_request->dl_tti_request_body.nPDUs;
@@ -420,7 +420,7 @@ static void copy_tx_data_req_to_dl_info(nr_downlink_indication_t *dl_info, nfapi
if (!dl_info->rx_ind)
{
dl_info->rx_ind = CALLOC(1, sizeof(fapi_nr_rx_indication_t));
dl_info->rx_ind = CALLOC(num_pdus, sizeof(fapi_nr_rx_indication_t));
}
AssertFatal(dl_info->rx_ind != NULL, "%s: Out of memory in calloc", __FUNCTION__);
fapi_nr_rx_indication_t *rx_ind = dl_info->rx_ind;