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L1 beam allocation for CSI-RS

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This commit is contained in:
francescomani
2024-11-14 08:41:14 +01:00
parent 0993eb4ed8
commit f3bee8ed25
1 changed files with 12 additions and 2 deletions
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openair1/SCHED_NR/phy_procedures_nr_gNB.c
+12 -2
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@@ -252,7 +252,6 @@ void phy_procedures_gNB_TX(processingData_L1tx_t *msgTx,
for (int i = 0; i < NR_SYMBOLS_PER_SLOT; i++){
NR_gNB_CSIRS_t *csirs = &msgTx->csirs_pdu[i];
if (csirs->active == 1) {
AssertFatal(gNB->common_vars.beam_id == NULL, "Cannot handle CSI in the framework of beamforming yet\n");
LOG_D(PHY, "CSI-RS generation started in frame %d.%d\n",frame,slot);
nfapi_nr_dl_tti_csi_rs_pdu_rel15_t *csi_params = &csirs->csirs_pdu.csi_rs_pdu_rel15;
if (csi_params->csi_type == 2) { // ZP-CSI
@@ -263,8 +262,19 @@ void phy_procedures_gNB_TX(processingData_L1tx_t *msgTx,
csi_params->freq_domain,
csi_params->symb_l0,
csi_params->symb_l1);
nfapi_nr_tx_precoding_and_beamforming_t *pb = &csi_params->precodingAndBeamforming;
int csi_bitmap = 0;
int lprime_num = mapping_parms.lprime + 1;
for (int j = 0; j < mapping_parms.size; j++)
csi_bitmap |= ((1 << lprime_num) - 1) << mapping_parms.loverline[j];
int beam_nb = beam_index_allocation(pb->prgs_list[0].dig_bf_interface_list[0].beam_idx,
&gNB->common_vars,
slot,
fp->symbols_per_slot,
csi_bitmap);
nr_generate_csi_rs(&gNB->frame_parms,
(int32_t **)gNB->common_vars.txdataF[0],
(int32_t **)gNB->common_vars.txdataF[beam_nb],
gNB->TX_AMP,
csi_params,
slot,