如何查看UE的ENDC组合能力
本文带着一个问题，介绍如何查看UE支持的ENDC band组合能力的方法，并解答问题。
AT&T上报ENDC网络能力时，NR只上报了bandNR 5,是什么原因？
[0xB0C0] OTA LOG 05:58:40.391797 UL_DCCH / UECapabilityInformationRadio Bearer ID: 1, Freq: 675, SFN: 01
rf-ParametersMRDC
{
supportedBandCombinationList
{
{
bandList
{
eutra :
{
bandEUTRA 2,
ca-BandwidthClassDL-EUTRA a,
ca-BandwidthClassUL-EUTRA a
},
nr :
{
bandNR 5,
ca-BandwidthClassDL-NR a,
ca-BandwidthClassUL-NR a
}
},
featureSetCombination 0,
mrdc-Parameters
{
dynamicPowerSharingENDC supported,
simultaneousRxTxInterBandENDC supported
}
},
{
bandList
{
eutra :
{
bandEUTRA 66,
ca-BandwidthClassDL-EUTRA c,
ca-BandwidthClassUL-EUTRA a
},
nr :
{
bandNR 5,
ca-BandwidthClassDL-NR a,
ca-BandwidthClassUL-NR a
}
},
featureSetCombination 1,
mrdc-Parameters
{
dynamicPowerSharingENDC supported,
simultaneousRxTxInterBandENDC supported
}
},
{
bandList
{
eutra :
{
bandEUTRA 66,
ca-BandwidthClassDL-EUTRA a,
ca-BandwidthClassUL-EUTRA a
},
nr :
{
bandNR 5,
ca-BandwidthClassDL-NR a,
ca-BandwidthClassUL-NR a
}
},
featureSetCombination 0,
mrdc-Parameters
{
dynamicPowerSharingENDC supported,
simultaneousRxTxInterBandENDC supported
}
},
{
bandList
{
eutra :
{
bandEUTRA 30,
ca-BandwidthClassDL-EUTRA a,
ca-BandwidthClassUL-EUTRA a
},
nr :
{
bandNR 5,
ca-BandwidthClassDL-NR a,
ca-BandwidthClassUL-NR a
}
},
featureSetCombination 0,
mrdc-Parameters
{
dynamicPowerSharingENDC supported,
simultaneousRxTxInterBandENDC supported
}
}
},
appliedFreqBandListFilter
{
bandInformationEUTRA :
{
bandEUTRA 2
},
bandInformationEUTRA :
{
bandEUTRA 66
},
bandInformationEUTRA :
{
bandEUTRA 4
},
bandInformationEUTRA :
{
bandEUTRA 30
},
bandInformationEUTRA :
{
bandEUTRA 29
},
bandInformationEUTRA :
{
bandEUTRA 17
},
bandInformationEUTRA :
{
bandEUTRA 14
},
bandInformationEUTRA :
{
bandEUTRA 5
},
bandInformationEUTRA :
{
bandEUTRA 25
},
bandInformationEUTRA :
{
bandEUTRA 10
},
bandInformationEUTRA :
{
bandEUTRA 12
},
bandInformationEUTRA :
{
bandEUTRA 85
},
bandInformationEUTRA :
{
bandEUTRA 26
},
bandInformationNR :
{
bandNR 5
}
},
查看UE支持的ENDC band组合能力的方法是：
Log Packets -> NR5G -> RRC -> [0xB826] NR5G RRC Supported CA Combos
05:58:40.391732 [0xB826] NR5G RRC Supported CA Combos
Version = 9
Version 0x09 {
Total Num Combos = 106
starting_index = 0
Num Combos = 100
Source = RF
CA Combos[0] {
Envelope Mode Pruned Out = false
Simul RXTX Endc = 1
Simul RXTX CA = 1
Muting State = NO_MATCH
Power Class = 2
Env Mask = 1
BC_ID = 0
Intra Config Type = 0
Num Bands = 2
TDD Ant Switch FDD Disruption = 0
CS Style = ULCA
RF Envelope_Mode Mask = 0x00000001
RF Envelope_Mode Subset Mask = 0x00000000
Per Band Info[0] {
bw_class {
Band = 79
Tech = NR
DL BW Class = CLASS_A
DL Max Antennas Index = ANTENNA_4
UL BW Class = CLASS_A
UL Max Antennas Index = ANTENNA_1
UL QAM Cap Index = 1
SRS TX Switch Type = SRS_UNSUPPORTED
Max SCS = SCS_30
DL BW Per CC = BW_100
UL BW Per CC = BW_100
SRS Carrier Hop = 0
RX Limit = 0
TX Switch Impact To RX = 0
TX Switch Another Band = 0
}
}
Per Band Info[1] {
bw_class {
Band = 41
Tech = LTE
DL BW Class = CLASS_C
DL Max Antennas Index = ANTENNA_2_2
UL BW Class = CLASS_A
UL Max Antennas Index = ANTENNA_1
UL QAM Cap Index = 1
SRS TX Switch Type = SRS_UNSUPPORTED
Max SCS = SCS_30
DL BW Per CC = BW_20_20
UL BW Per CC = BW_20
SRS Carrier Hop = 0
RX Limit = 0
TX Switch Impact To RX = 0
TX Switch Another Band = 0
}
}
}
……
我们查看到的ENDC组合是很多的，
为什么上报给网络的ENDC组合能力只有N5的呢？
是因为网络只查询时只下发了N5的：
[0xB0C0] OTA LOG 05:58:40.389696 DL_DCCH / UECapabilityEnquiryRadio Bearer ID: 1, Freq: 675, SFN: 4721
message c1 : ueCapabilityEnquiry :
{
rrc-TransactionIdentifier 0,
criticalExtensions c1 : ueCapabilityEnquiry-r8 :
{
ue-CapabilityRequest
{
eutra-nr,
nr
},
nonCriticalExtension
{
nonCriticalExtension
{
nonCriticalExtension
{
nonCriticalExtension
{
nonCriticalExtension
{
requestedFreqBandsNR-MRDC-r15 '01A0042080303A0700800D0080600480B0A806600200'H,
nonCriticalExtension
{
{
eutra-nr-only-r15 true
}
}
}
}
}
}
}
}
}
=======================================================
Further decoding Nr Requested Freq Band MRDC
=======================================================
Interpreted PDU:
value FreqBandList ::=
{
bandInformationEUTRA :
{
bandEUTRA 2
},
bandInformationEUTRA :
{
bandEUTRA 66
},
bandInformationEUTRA :
{
bandEUTRA 4
},
bandInformationEUTRA :
{
bandEUTRA 30
},
bandInformationEUTRA :
{
bandEUTRA 29
},
bandInformationEUTRA :
{
bandEUTRA 17
},
bandInformationEUTRA :
{
bandEUTRA 14
},
bandInformationEUTRA :
{
bandEUTRA 5
},
bandInformationEUTRA :
{
bandEUTRA 25
},
bandInformationEUTRA :
{
bandEUTRA 10
},
bandInformationEUTRA :
{
bandEUTRA 12
},
bandInformationEUTRA :
{
bandEUTRA 85
},
bandInformationEUTRA :
{
bandEUTRA 26
},
bandInformationNR : <-----------网络只请求了N5，所以终端就只上报与N5有关的ENDC能力
{
bandNR 5
}
}