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Correctly interpret SRS numberOfSymbols

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A length of 0 is to be interpreted as 1 symbol, a length of 1 is 2, etc.
This commit is contained in:
Robert Schmidt
2025-08-14 12:50:03 +02:00
parent 98cc36430b
commit 71e01bbaa9
1 changed files with 3 additions and 1 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_srs.c
+3 -1
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@@ -471,7 +471,9 @@ static void nr_configure_srs(gNB_MAC_INST *nrmac,
NR_beam_alloc_t beam = beam_allocation_procedure(&nrmac->beam_info, frame, slot, UE->UE_beam_index, slots_per_frame);
AssertFatal(beam.idx >= 0, "Cannot allocate SRS in any available beam\n");
uint16_t *vrb_map_UL = &nrmac->common_channels[CC_id].vrb_map_UL[beam.idx][buffer_index * MAX_BWP_SIZE];
uint16_t mask = SL_to_bitmap(srs_pdu->time_start_position, srs_pdu->num_symbols);
uint16_t num = 1 << srs_pdu->num_symbols; // 0,1,2 means 1,2,4 symbols, see 222.10.04 table 3-105
uint16_t mask = SL_to_bitmap(srs_pdu->time_start_position, num);
DevAssert(mask != 0);
for (int i = 0; i < srs_pdu->bwp_size; ++i) {
int rb = i + srs_pdu->bwp_start;
uint16_t alloc = vrb_map_UL[rb] & mask;