WUS-R16版本中終端喚醒信號

WUS-R16版本中終端喚醒信號\o"5G"#5G\o"R16"#R16\o"WUS"#WUS\o"DRX"#DRXsharetechnote/html/5G/5G_WUS.html翻譯整理喚醒信號WUS(WakeUpSignal)是3GPP在R16中為5G(NR)引入的一種省電機(jī)制。試圖通過讓終端(UE)繼續(xù)休眠(即不喚醒)來節(jié)省電力,用于在DRXOnDuration期間：終端(UE)沒有數(shù)據(jù)傳遞時，用于gNB通知終端(UE)'NoWakeUp'；

當(dāng)UE有任何數(shù)據(jù)需傳遞時，gNB會通知UE'WaveUp'，以便UE在OnDuration時間內(nèi)喚醒并接收數(shù)據(jù)。WUS工作機(jī)制3GPP在TS38.213-10.3中進(jìn)行了定義:PDCCH監(jiān)視指示和SCell的休眠/非休眠行為中進(jìn)行了定義。整個過程可用下圖表示：UE能力要求WUS是R16版的功能，很多R15設(shè)備不支持；在應(yīng)用中g(shù)NB應(yīng)檢查UE是否具有此能力。終端(UE)應(yīng)將其對WUS的支持告知gNB，相關(guān)參數(shù)如下：MAC-ParametersFRX-Diff-r16::=SEQUENCE{

directMCG-SCellActivation-r16

ENUMERATED{supported}OPTIONAL,

directMCG-SCellActivationResume-r16

ENUMERATED{supported}OPTIONAL,

directSCG-SCellActivation-r16

ENUMERATED{supported}OPTIONAL,

directSCG-SCellActivationResume-r16

ENUMERATED{supported}OPTIONAL,

--R119-1:DRXAdaptation

drx-Adaptation-r16SEQUENCE{

non-SharedSpectrumChAccess-r16

MinTimeGap-r16OPTIONAL,

sharedSpectrumChAccess-r16

MinTimeGap-r16OPTIONAL

}OPTIONAL,

...}

MinTimeGap-r16::=SEQUENCE{

scs-15kHz-r16

ENUMERATED{sl1,sl3}OPTIONAL,

scs-30kHz-r16

ENUMERATED{sl1,sl6}OPTIONAL,

scs-60kHz-r16

ENUMERATED{sl1,sl12}OPTIONAL,

scs-120kHz-r16

ENUMERATED{sl2,sl24}OPTIONAL}

38.213-Table10.3-1MinimumtimegapvalueX>DRX配置(R16)指示UE是否支持以下DRX配置：配置ps-Offset用于檢測DCI

format2_6與ps-RNTI加擾CRC并在LongDRX的drx-onDurationTimer開始之前報(bào)告MinTimeGap；通過檢測DCI

format2_6指示UE是否為下一個LongDRX周期啟動drx-onDurationTimer；在ActiveTime之外的所有監(jiān)控場合都沒有檢測到DCIformat2_6時配置的UE喚醒與否；DCI

format2_6影響除L1-RSRP(ps-TransmitOtherPeriodicCSI)之外，配置定期CSI報(bào)告drxonDurationTimer不會在下一個LongDRX周期開始；配置周期性L1-RSRP報(bào)告(ps-TransmitPeriodicL1-RSRP)當(dāng)受DCI

format2_6影響時drx-onDurationTimer在下一個LongDRX周期內(nèi)不啟動;能力信令包括在最后一個DCI

format2_6監(jiān)視時機(jī)的時隙結(jié)束與UE將針對每個SCS啟動LongDRX的drx-onDurationTimer的時隙開始之間的最小時間間隙。sl1表示1個slot，sl2表示2個slot，，，分別報(bào)告許可和未許可頻段支持此功能。當(dāng)該字段被報(bào)告時，還至少應(yīng)上報(bào)sharedSpectrumChAccess-r16或non-SharedSpectrumChAccess-r16。DCI2_6用于通知一個或多個UE在DRX活動時間之外的省電信息。這是由PS-RNTI加擾DCIformat2_6的結(jié)構(gòu)如下：Block1,Block2,…,BlockN，每個Block結(jié)構(gòu)如下：DCI2_6整體結(jié)構(gòu)如下圖：RRC參數(shù)與WUS直接或間接相關(guān)RRC參數(shù)如下,其中DPC-Config-r16(標(biāo)記為紅色)是最關(guān)鍵的參數(shù)。DRX-Config::=SEQUENCE{

drx-onDurationTimerCHOICE{

subMilliSecondsINTEGER(1..31),

milliSecondsENUMERATED{

ms1,ms2,......

ms1600,spare8,......spare1}

},

drx-InactivityTimerENUMERATED{

ms0,ms1,......

ms2560,spare9,......spare1},

drx-HARQ-RTT-TimerDLINTEGER(0..56),

drx-HARQ-RTT-TimerULINTEGER(0..56),

drx-RetransmissionTimerDLENUMERATED{

sl0,sl1,sl2,......,sl320,spare15,spare14,......

spare2,spare1},

drx-RetransmissionTimerULENUMERATED{

sl0,......

sl128,

sl160,sl320,spare15,......

spare1},

drx-LongCycleStartOffsetCHOICE{

ms10INTEGER(0..9),

.......

ms10240INTEGER(0..10239)

},

shortDRXSEQUENCE{

drx-ShortCycleENUMERATED{

ms2,ms3,........

ms640,spare9,......spare1},

drx-ShortCycleTimerINTEGER(1..16)

}OPTIONAL,--NeedR

drx-SlotOffsetINTEGER(0..31)}

DRX-Preference-r16::=SEQUENCE{

preferredDRX-InactivityTimer-r16ENUMERATED{

ms0,ms1,.......

ms2560,spare9,......

spare1}OPTIONAL,

preferredDRX-LongCycle-r16ENUMERATED{

ms10,ms20,.......

ms10240,spare12,s.......

spare2,spare1}OPTIONAL,

preferredDRX-ShortCycle-r16ENUMERATED{

ms2,m.......

ms640,spare9......spare1}OPTIONAL,

preferredDRX-ShortCycleTimer-r16INTEGER(1..16)OPTIONAL}

PhysicalCellGroupConfig::=SEQUENCE{

..

dcp-Config-r16

SetupRelease{DCP-Config-r16}OPTIONAL,--NeedM

...}

DCP-Config-r16::=SEQUENCE{

//DCPstandsforDCIwithCRCscrambledbyPS-RNTI

ps-RNTI-r16

RNTI-Value,

ps-Offset-r16

INTEGER(1..120),

sizeDCI-2-6-r16

INTEGER(1..maxDCI-2-6-Size-r16),

ps-PositionDCI-2-6-r16

INTEGER(0..maxDCI-2-6-Size-1-r16),

ps-WakeUp-r16

ENUMERATED{true}OPTIONAL,--NeedS

ps-TransmitPeriodicL1-RSRP-r16

ENUMERATED{true}OPTIONAL,--NeedS

ps-TransmitOtherPeriodicCSI-r16

ENUMERATED{true}OPTIONAL--NeedS}

ServingCellConfig::=SEQUENCE{

dormantBWP-Config-r16

SetupRelease{DormantBWP-Config-r16}}

DormantBWP-Config-r16::=SEQUENCE{

dormantBWP-Id-r16

BWP-IdOPTIONAL,--NeedM

withinActiveTimeConfig-r16

SetupRelease{WithinActiveTimeConfig-r16}OPTIONAL,--NeedM

outsideActiveTimeConfig-r16

SetupRelease{OutsideActiveTimeConfig-r16}OPTIONAL--NeedM}

WithinActiveTimeConfig-r16::=SEQUENCE{

firstWithinActiveTimeBWP-Id-r16

BWP-IdOPTIONAL,--NeedM

dormancyGroupWithinActiveTime-r16

DormancyGroupID-r16OPTION