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Merge remote-tracking branch 'origin/NR_SSB_fix' into integration_2022_wk29

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This commit is contained in:
Robert Schmidt
2022-07-19 18:12:40 +02:00
parent 82c62ecd5a edcb1b2bf5
commit fcb07ef5fd
8 changed files with 49 additions and 85 deletions
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openair2/RRC/NR/MESSAGES/asn1_msg.c
+5 -9
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@@ -226,17 +226,13 @@ uint8_t do_MIB_NR(gNB_RRC_INST *rrc,uint32_t frame) {
AssertFatal(scc->ssbSubcarrierSpacing != NULL, "scc->ssbSubcarrierSpacing is null\n");
int band = *scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0];
frequency_range_t frequency_range = band<100?FR1:FR2;
int scs_scaling = 1<<*scc->ssbSubcarrierSpacing;
if (scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencyPointA < 600000)
scs_scaling = scs_scaling*3;
if (scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencyPointA > 2016666)
scs_scaling = scs_scaling>>2;
uint32_t absolute_diff = (*scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencySSB - scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencyPointA);
int ssb_subcarrier_offset = 31; // default value for NSA
if (get_softmodem_params()->sa) {
ssb_subcarrier_offset = absolute_diff%(12*scs_scaling);
if(frequency_range == FR1)
ssb_subcarrier_offset <<= *scc->ssbSubcarrierSpacing;
uint32_t absolute_diff = (*scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencySSB - scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencyPointA);
int scs_scaling = scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencyPointA < 600000 ? 3 : 1;
ssb_subcarrier_offset = (absolute_diff*scs_scaling)%24;
if(frequency_range == FR2)
ssb_subcarrier_offset >>= 1; // this assumes 120kHz SCS for SSB and subCarrierSpacingCommon (only option supported by OAI for now)
}
mib->message.choice.mib->ssb_SubcarrierOffset = ssb_subcarrier_offset&15;