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Merge remote-tracking branch 'origin/issue-705' into integration_2026_w04 (!3862)

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Check for PDSCH overlapping CORESET during RA

CORESET 0 is configured in the configuration file by
'initialDLBWPcontrolResourceSetZero' and PDSCH TDA list is configured based on
the current BWP size.

It may happen that the user configures a 2 symbol CORESET 0 for a BWP >= 48 PRBs
(which is a valid 3GPP configuration) but in function 'nr_rrc_config_dl_tda'
this scenario is not taken in account causing an overlap between PDSCH and PDCCH
symbols during RA.

This leads to very unreliable Msg2 and Msg4 decoding at the UE, but from time to
time it succeeds, which becomes hard to identify this issue.

closes #705
This commit is contained in:
Jaroslava Fiedlerova
2026-01-21 11:55:42 +01:00
parent 231966753d 03d3a94038
commit 4d19b4732e
1 changed files with 4 additions and 0 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
+4
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@@ -1318,6 +1318,10 @@ static void prepare_dl_pdus(gNB_MAC_INST *nr_mac,
nr_configure_pdcch(pdcch_pdu_rel15, coreset, &sched_ctrl->sched_pdcch);
nr_mac->pdcch_pdu_idx[CC_id][coresetid] = pdcch_pdu_rel15;
}
AssertFatal(
pdcch_pdu_rel15->StartSymbolIndex + pdcch_pdu_rel15->DurationSymbols <= sched_pdsch->tda_info.startSymbolIndex,
"'initialDLBWPcontrolResourceSetZero' value in configuration file is not supported for the current Bandwidth! PDSCH is "
"overlapping CORESET! Please check 3GPP TS 38.213 Section 13 and choose an index with less number of symbols for CORESET\n");
nfapi_nr_dl_tti_request_pdu_t *dl_tti_pdsch_pdu = &dl_req->dl_tti_pdu_list[dl_req->nPDUs];
memset((void *)dl_tti_pdsch_pdu, 0, sizeof(nfapi_nr_dl_tti_request_pdu_t));