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Add distance in meters to RA print in gNB

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This commit is contained in:
Bartosz Podrygajlo
2025-01-23 16:32:31 +01:00
parent ad04800b20
commit 803c9c349a
1 changed files with 12 additions and 2 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
+12 -2
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@@ -1538,15 +1538,25 @@ static void nr_generate_Msg2(module_id_t module_idP,
pdsch_pdu_rel15->precodingAndBeamforming.prgs_list[0].pm_idx = 0;
pdsch_pdu_rel15->precodingAndBeamforming.prgs_list[0].dig_bf_interface_list[0].beam_idx = ra->beam_id;
// Distance calculation according to SCF222.10.02 RACH.indication (table 3-74) and 38.213 4.2/38.211 4.3.1
// T_c according to 38.211 4.1
float T_c_ns = 0.509;
int numerology = ra->UL_BWP.scs;
float rtt_ns = T_c_ns * 16 * 64 / (1 << numerology) * ra->timing_offset;
float speed_of_light_in_meters_per_second = 299792458.0f;
float distance_in_meters = speed_of_light_in_meters_per_second * rtt_ns / 1000 / 1000 / 1000 / 2;
LOG_A(NR_MAC,
"UE %04x: %d.%d Generating RA-Msg2 DCI, RA RNTI 0x%x, state %d, CoreSetType %d, preamble_index(RAPID) %d\n",
"UE %04x: %d.%d Generating RA-Msg2 DCI, RA RNTI 0x%x, state %d, CoreSetType %d, preamble_index(RAPID) %d, "
"timing_offset = %d (estimated distance %.1f [m])\n",
ra->rnti,
frameP,
slotP,
ra->RA_rnti,
ra->ra_state,
pdcch_pdu_rel15->CoreSetType,
ra->preamble_index);
ra->preamble_index,
ra->timing_offset,
distance_in_meters);
// SCF222: PDU index incremented for each PDSCH PDU sent in TX control message. This is used to associate control
// information to data and is reset every slot.