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Set k2=2 also in 5ms TDD periods

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In the past, setting k2=2 for 5ms TDD periods resulted in increased ping
RTT and/or reestablishment requests. These problems do not appear
anymore, and we can allow k2=2.
This commit is contained in:
Robert Schmidt
2022-05-23 15:11:27 +02:00
parent 00d021c66b
commit 9354d4305b
1 changed files with 1 additions and 16 deletions
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openair2/RRC/NR/nr_rrc_config.c
+1 -16
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@@ -353,22 +353,7 @@ void nr_rrc_config_ul_tda(NR_ServingCellConfigCommon_t *scc, int min_fb_delay){
//TODO change to accomodate for SRS
frame_type_t frame_type = get_frame_type(*scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0], *scc->ssbSubcarrierSpacing);
int temp_min_delay = 6; // k2 = 2 or 3 won'r work as well as higher values
if(frame_type==TDD && scc->tdd_UL_DL_ConfigurationCommon) {
switch (scc->tdd_UL_DL_ConfigurationCommon->pattern1.dl_UL_TransmissionPeriodicity) {
case NR_TDD_UL_DL_Pattern__dl_UL_TransmissionPeriodicity_ms2p5: // 30kHz SCS
case NR_TDD_UL_DL_Pattern__dl_UL_TransmissionPeriodicity_ms2: // 60kHz SCS
case NR_TDD_UL_DL_Pattern__dl_UL_TransmissionPeriodicity_ms1p25: // 60kHz SCS
case NR_TDD_UL_DL_Pattern__dl_UL_TransmissionPeriodicity_ms1: // 120kHz SCS
case NR_TDD_UL_DL_Pattern__dl_UL_TransmissionPeriodicity_ms0p625: // 120kHz SCS
case NR_TDD_UL_DL_Pattern__dl_UL_TransmissionPeriodicity_ms0p5: // 120kHz SCS
temp_min_delay = 2;
break;
}
}
int k2 = (min_fb_delay<temp_min_delay)?temp_min_delay:min_fb_delay;
const int k2 = min_fb_delay;
uint8_t DELTA[4]= {2,3,4,6}; // Delta parameter for Msg3
int mu = scc->uplinkConfigCommon->initialUplinkBWP->genericParameters.subcarrierSpacing;