yigid/openairinterface5g
1
0
Fork 0
mirror of https://gitlab.eurecom.fr/oai/openairinterface5g.git synced 2026-07-13 04:30:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

Count and print failed CCE allocations for UL/DL

Browse Source
This commit is contained in:
Robert Schmidt
2025-07-23 11:22:11 +02:00
parent 5e734238c1
commit 948c0d5d2c
5 changed files with 16 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
doc/MAC/mac-usage.md
View File

@@ -79,8 +79,8 @@ Example:
UE RNTI 2460 CU-UE-ID 2 in-sync PH 28 dB PCMAX 24 dBm, average RSRP -74 (8 meas)
UE 2460: CQI 15, RI 2, PMI (14,1)
UE 2460: UL-RI 2 TPMI 0
UE 2460: dlsch_rounds 32917/5113/1504/560, dlsch_errors 211, pucch0_DTX 1385, BLER 0.19557 MCS (1) 23
UE 2460: ulsch_rounds 3756/353/182/179, ulsch_errors 170, ulsch_DTX 285, BLER 0.33021 MCS (1) 27 (Qm 8 dB) NPRB 5 SNR 31.0 dB
UE 2460: dlsch_rounds 32917/5113/1504/560, dlsch_errors 211, pucch0_DTX 1385, BLER 0.19557 MCS (1) 23 CCE fail 3
UE 2460: ulsch_rounds 3756/353/182/179, ulsch_errors 170, ulsch_DTX 285, BLER 0.33021 MCS (1) 27 (Qm 8 dB) NPRB 5 SNR 31.0 dB CCE fail 0
UE 2460: MAC: TX 1530943191 RX 194148 bytes
UE 2460: LCID 1: TX 651 RX 3031 bytes
UE 2460: LCID 2: TX 0 RX 0 bytes
@@ -159,6 +159,9 @@ The fourth and fifth line show HARQ-related information:
should be close to the target in the gNB configuration file,
`pusch_TargetSNRx10`, which should be around 10 times the value shown in the
log
* Both ULSCH/DLSCH `CCE fail`: lists the number of failed CCE attempts. If this
number gets high, it signifies that the scheduler tried to scheduled this UE,
but could not allocate the DCI.
In the last lines:
* `MAC` shows the amount of MAC PDU bytes scheduled in transmit (`TX`,

2
openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c
View File

@@ -554,6 +554,7 @@ static bool allocate_dl_retransmission(module_id_t module_id,
false,
sched_ctrl->pdcch_cl_adjust);
if (CCEIndex<0) {
sched_ctrl->dl_cce_fail++;
LOG_D(NR_MAC, "[UE %04x][%4d.%2d] could not find free CCE for DL DCI retransmission\n", UE->rnti, frame, slot);
return false;
}
@@ -806,6 +807,7 @@ static void pf_dl(module_id_t module_id,
false,
sched_ctrl->pdcch_cl_adjust);
if (CCEIndex < 0) {
sched_ctrl->dl_cce_fail++;
LOG_D(NR_MAC, "[UE %04x][%4d.%2d] could not find free CCE for DL DCI\n", rnti, frame, slot);
reset_beam_status(&mac->beam_info, frame, slot, iterator->UE->UE_beam_index, slots_per_frame, beam.new_beam);
iterator++;

2
openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c
View File

@@ -1816,6 +1816,7 @@ static bool allocate_ul_retransmission(gNB_MAC_INST *nrmac,
sched_ctrl->pdcch_cl_adjust);
if (CCEIndex<0) {
LOG_D(NR_MAC, "[UE %04x][%4d.%2d] no free CCE for retransmission UL DCI UE\n", UE->rnti, frame, slot);
sched_ctrl->ul_cce_fail++;
return false;
}
@@ -2058,6 +2059,7 @@ static int pf_ul(gNB_MAC_INST *nrmac,
sched_ctrl->pdcch_cl_adjust);
if (CCEIndex < 0) {
sched_ctrl->ul_cce_fail++;
reset_beam_status(&nrmac->beam_info, frame, slot, iterator->UE->UE_beam_index, slots_per_frame, dci_beam.new_beam);
reset_beam_status(&nrmac->beam_info, sched_frame, sched_slot, iterator->UE->UE_beam_index, slots_per_frame, beam.new_beam);
LOG_D(NR_MAC, "[UE %04x][%4d.%2d] no free CCE for UL DCI\n", iterator->UE->rnti, frame, slot);

10
openair2/LAYER2/NR_MAC_gNB/main.c
View File

@@ -168,12 +168,13 @@ size_t dump_mac_stats(gNB_MAC_INST *gNB, char *output, size_t strlen, bool reset
output += snprintf(output,
end - output,
", dlsch_errors %"PRIu64", pucch0_DTX %d, BLER %.5f MCS (%d) %d\n",
", dlsch_errors %"PRIu64", pucch0_DTX %d, BLER %.5f MCS (%d) %d CCE fail %d\n",
stats->dl.errors,
stats->pucch0_DTX,
sched_ctrl->dl_bler_stats.bler,
UE->current_DL_BWP.mcsTableIdx,
sched_ctrl->dl_bler_stats.mcs);
sched_ctrl->dl_bler_stats.mcs,
sched_ctrl->dl_cce_fail);
if (reset_rsrp) {
stats->num_rsrp_meas = 0;
stats->cumul_rsrp = 0;
@@ -187,7 +188,7 @@ size_t dump_mac_stats(gNB_MAC_INST *gNB, char *output, size_t strlen, bool reset
output += snprintf(output,
end - output,
", ulsch_errors %"PRIu64", ulsch_DTX %d, BLER %.5f MCS (%d) %d (Qm %d deltaMCS %d dB) NPRB %d SNR %d.%d dB\n",
", ulsch_errors %"PRIu64", ulsch_DTX %d, BLER %.5f MCS (%d) %d (Qm %d deltaMCS %d dB) NPRB %d SNR %d.%d dB CCE fail %d\n",
stats->ul.errors,
stats->ulsch_DTX,
sched_ctrl->ul_bler_stats.bler,
@@ -197,7 +198,8 @@ size_t dump_mac_stats(gNB_MAC_INST *gNB, char *output, size_t strlen, bool reset
UE->mac_stats.deltaMCS,
UE->mac_stats.NPRB,
sched_ctrl->pusch_snrx10 / 10,
sched_ctrl->pusch_snrx10 % 10);
sched_ctrl->pusch_snrx10 % 10,
sched_ctrl->ul_cce_fail);
output += snprintf(output,
end - output,
"UE %04x: MAC: TX %14"PRIu64" RX %14"PRIu64" bytes\n",

1
openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h
View File

@@ -591,6 +591,7 @@ typedef struct {
/// corresponding to the sched_pusch/sched_pdsch structures below
int cce_index;
uint8_t aggregation_level;
uint32_t dl_cce_fail, ul_cce_fail;
/// Array of PUCCH scheduling information
/// Its size depends on TDD configuration and max feedback time