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Merge remote-tracking branch 'origin/dci_00_dmrs_port' into integration_2025_w42 (!3694)

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fix non initialized DMRS port value in case of DCI00 at UE

When transmitted PUSCH is neither scheduled by DCI format 0_1 with CRC
scrambled by C-RNTI, CS-RNTI, SP-CSI-RNTI or MCS-C-RNTI, nor
corresponding to a configured grant, the UE shall use [...] DM-RS port
0.

In UE code it was not set in case of DCI00 and that was leading to ULSCH
failures in some scenarios.
This commit is contained in:
Robert Schmidt
2025-10-15 08:35:11 +02:00
parent 2a67719e92 2b25b32b16
commit 6ddd2bd2af
1 changed files with 1 additions and 3 deletions
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openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c
+1 -3
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@@ -398,7 +398,7 @@ int nr_config_pusch_pdu(NR_UE_MAC_INST_t *mac,
pusch_config_pdu->nrOfLayers = 1;
pusch_config_pdu->Tpmi = 0;
pusch_config_pdu->rnti = rnti;
pusch_config_pdu->dmrs_ports = 1;
pusch_dmrs_AdditionalPosition_t add_pos = pusch_dmrs_pos2;
int dmrslength = 1;
NR_PUSCH_Config_t *pusch_Config = current_UL_BWP->pusch_Config;
@@ -435,7 +435,6 @@ int nr_config_pusch_pdu(NR_UE_MAC_INST_t *mac,
pusch_config_pdu->rb_size = msgA_PUSCH_Resource->nrofPRBs_PerMsgA_PO_r16;
pusch_config_pdu->mcs_table = 0;
pusch_config_pdu->frequency_hopping = msgA_PUSCH_Resource->msgA_IntraSlotFrequencyHopping_r16 ? *msgA_PUSCH_Resource->msgA_IntraSlotFrequencyHopping_r16 : 0;
pusch_config_pdu->dmrs_ports = 1; // is in SIB1 nrofDMRS_Sequences_r16?
pusch_config_pdu->pusch_data.new_data_indicator = 1; // new data
pusch_config_pdu->num_dmrs_cdm_grps_no_data = 2;
pusch_config_pdu->ul_dmrs_symb_pos = get_l_prime(3, 0, pusch_dmrs_pos2, pusch_len1, 10, mac->dmrs_TypeA_Position);
@@ -529,7 +528,6 @@ int nr_config_pusch_pdu(NR_UE_MAC_INST_t *mac,
// DM-RS configuration according to 6.2.2 UE DM-RS transmission procedure in 38.214
pusch_config_pdu->num_dmrs_cdm_grps_no_data = 2;
pusch_config_pdu->dmrs_ports = 1;
// DMRS sequence initialization [TS 38.211, sec 6.4.1.1.1].
// Should match what is sent in DCI 0_1, otherwise set to 0.