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gNB: compute and store SSB-SINR in dB instead of just the SINR-index

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This commit is contained in:
Thomas Schlichter
2025-09-08 13:32:23 +02:00
parent d372aa1b50
commit afc13c264c
2 changed files with 27 additions and 7 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_uci.c
+26 -5
View File
@@ -414,6 +414,25 @@ static void handle_dl_harq(NR_UE_info_t * UE,
} }
} }
// Referred Table 10.1.16.1-1 in 38.133 V16.7.0.
static int get_measured_sinr(int index)
{
if (index < 0 || index > 127)
return INT_MAX;
return -235 + index * 5;
}
// Referred Table 10.1.16.1-2 in 38.133 V16.7.0.
static int get_diff_sinr(int index, int best_SINRx10)
{
if (index <= 0)
return best_SINRx10;
if (index >= 15)
return best_SINRx10 - 150;
return best_SINRx10 - index * 10;
}
//returns the measured RSRP value (upper limit) //returns the measured RSRP value (upper limit)
static bool get_measured_rsrp(uint8_t index, int *rsrp) static bool get_measured_rsrp(uint8_t index, int *rsrp)
{ {
@@ -498,22 +517,24 @@ static void evaluate_sinr_report(gNB_MAC_INST *nrmac,
} }
curr_payload = pickandreverse_bits(payload, 7, *cumul_bits); curr_payload = pickandreverse_bits(payload, 7, *cumul_bits);
sinr_report->SINR_index[0] = curr_payload & 0x7f; int sinr_index = curr_payload & 0x7f;
*cumul_bits += 7; *cumul_bits += 7;
csi_report->nb_of_csi_ssb_report++; csi_report->nb_of_csi_ssb_report++;
if (sinr_report->SINR_index[0] < 0 || sinr_report->SINR_index[0] > 127) { int SINRx10 = get_measured_sinr(sinr_index);
LOG_E(NR_MAC, "UE %04x: reported SINR index %d invalid\n", UE->rnti, sinr_report->SINR_index[0]); if (SINRx10 == INT_MAX) {
LOG_E(NR_MAC, "UE %04x: reported SINR index %d invalid\n", UE->rnti, sinr_index);
return; return;
} }
sinr_report->SINRx10[0] = SINRx10;
for (int i = 1; i < sinr_report->nr_reports; i++) { for (int i = 1; i < sinr_report->nr_reports; i++) {
curr_payload = pickandreverse_bits(payload, 4, *cumul_bits); curr_payload = pickandreverse_bits(payload, 4, *cumul_bits);
sinr_report->SINR_index[i] = curr_payload & 0x0f; sinr_report->SINRx10[i] = get_diff_sinr(curr_payload & 0x0f, sinr_report->SINRx10[0]);
*cumul_bits += 4; *cumul_bits += 4;
} }
LOG_D(MAC, "Reported SSB-SINR index = %d\n", sinr_report->SINR_index[0]); LOG_D(MAC, "Reported SSB-SINR = %d.%d\n", sinr_report->SINRx10[0] / 10, sinr_report->SINRx10[0] % 10);
} }
static void evaluate_rsrp_report(gNB_MAC_INST *nrmac, static void evaluate_rsrp_report(gNB_MAC_INST *nrmac,
openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h
+1 -2
View File
@@ -521,8 +521,7 @@ typedef struct RSRP_report {
uint8_t nr_reports; uint8_t nr_reports;
uint8_t resource_id[MAX_NR_OF_REPORTED_RS]; uint8_t resource_id[MAX_NR_OF_REPORTED_RS];
int RSRP[MAX_NR_OF_REPORTED_RS]; int RSRP[MAX_NR_OF_REPORTED_RS];
// SINR index according to tables 10.1.16.1-1, 10.1.16.1-2 int SINRx10[MAX_NR_OF_REPORTED_RS];
int SINR_index[MAX_NR_OF_REPORTED_RS];
} RSRP_report_t; } RSRP_report_t;
struct CSI_Report { struct CSI_Report {