WUS-R16版本中终端唤醒信号

WUS-R16版本中终端唤醒信号\o"5G"#5G\o"R16"#R16\o"WUS"#WUS\o"DRX"#DRXsharetechnote/html/5G/5G_WUS.html翻译整理唤醒信号WUS(WakeUpSignal)是3GPP在R16中为5G(NR)引入的一种省电机制。试图通过让终端(UE)继续休眠(即不唤醒)来节省电力,用于在DRXOnDuration期间：终端(UE)没有数据传递时，用于gNB通知终端(UE)'NoWakeUp'；

当UE有任何数据需传递时，gNB会通知UE'WaveUp'，以便UE在OnDuration时间内唤醒并接收数据。WUS工作机制3GPP在TS38.213-10.3中进行了定义:PDCCH监视指示和SCell的休眠/非休眠行为中进行了定义。整个过程可用下图表示：UE能力要求WUS是R16版的功能，很多R15设备不支持；在应用中gNB应检查UE是否具有此能力。终端(UE)应将其对WUS的支持告知gNB，相关参数如下：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用于检测DCI

format2_6与ps-RNTI加扰CRC并在LongDRX的drx-onDurationTimer开始之前报告MinTimeGap；通过检测DCI

format2_6指示UE是否为下一个LongDRX周期启动drx-onDurationTimer；在ActiveTime之外的所有监控场合都没有检测到DCIformat2_6时配置的UE唤醒与否；DCI

format2_6影响除L1-RSRP(ps-TransmitOtherPeriodicCSI)之外，配置定期CSI报告drxonDurationTimer不会在下一个LongDRX周期开始；配置周期性L1-RSRP报告(ps-TransmitPeriodicL1-RSRP)当受DCI

format2_6影响时drx-onDurationTimer在下一个LongDRX周期内不启动;能力信令包括在最后一个DCI

format2_6监视时机的时隙结束与UE将针对每个SCS启动LongDRX的drx-onDurationTimer的时隙开始之间的最小时间间隙。sl1表示1个slot，sl2表示2个slot，，，分别报告许可和未许可频段支持此功能。当该字段被报告时，还至少应上报sharedSpectrumChAccess-r16或non-SharedSpectrumChAccess-r16。DCI2_6用于通知一个或多个UE在DRX活动时间之外的省电信息。这是由PS-RNTI加扰DCIformat2_6的结构如下：Block1,Block2,…,BlockN，每个Block结构如下：DCI2_6整体结构如下图：RRC参数与WUS直接或间接相关RRC参数如下,其中DPC-Config-r16(标记为红色)是最关键的参数。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