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1、压缩模式介绍压缩模式的应用压缩模式(CompressedMode)可用于频间硬切换、模式间切换和系统间切换的测量。TGMP:TransmissionGappatternsequenceMeasurementPurpose:Thisparameterdefinesthepurposethistransmissiongappatternsequenceisintendedfor.Thefollowingvaluesareused:-forTDDmeasurements,onecompressedmodepatternsequencecanbecon
2、figuredwithpurpose'TDDmeasurement‘.forFDDmeasurements,onecompressedmodepatternsequencecanbeconfiguredwithpurpose'FDDmeasurement‘.forGSMmeasurements,threesimultaneouscompressedmodepatternsequencescanbeconfiguredwithpurposes'GSMcarrierRSSImeasurement','InitialBSICidentificatio
3、n'and'BSICre-confirmation‘.压缩模式的应用需要UE进行测量时,为使UE能够执行测量工作,UTRAN会命令UE进入压缩模式,同时告诉UE具体的压缩模式参数。而UE响应收到的“高层命令”(HigherLayersCommands),进入压缩模式进行测量。单接收机的UE必须同时支持上、下行压缩模式;而双接收机的UE,在其中一个用于测量接收,而另一个用于UTRAFDD接收时,可以不必支持下行压缩模式,但仍然必须支持上行压缩模式。一般情况下,可以认为上下行压缩模式,UE都必须支持。压缩模式配置流程RNCNodeBUESynchr
4、onisedRadioLinkReconfigurationPreparationRadioLinkReconfigurationReadyCompressedModeCommandSynchronisedRadioLinkReconfigurationCommitPhysicalChannelReconfigurationPhysicalChannelReconfigurationCompleteMeasurementcontrol压缩帧GAP位置压缩帧GAP的长度不能大于7.5slot,GAP的位置有下面两种情况:压缩模式的参数压缩图案压缩
5、模式的参数TGPSI:TransmissionGapPatternSequenceIdentifierselectsthecompressedmodepatternsequenceforwhichtheparametersaretobeset.TherangeofTGPSIis[1to6].TGSN(TransmissionGapStartingSlotNumber):Atransmissiongappatternbeginsinaradioframe,henceforwardcalledfirstradioframeofthetransmis
6、siongappattern,containingatleastonetransmissiongapslot.TGSNistheslotnumberofthefirsttransmissiongapslotwithinthefirstradioframeofthetransmissiongappattern;(TGSN=0,1,…14,slot)TGL1(TransmissionGapLength1):Thisisthedurationofthefirsttransmissiongapwithinthetransmissiongappatter
7、n,expressedinnumberofslots;(TGL=3,4,5,7,10,14,slot)TGL2(TransmissionGapLength2):Thisisthedurationofthesecondtransmissiongapwithinthetransmissiongappattern,expressedinnumberofslots.Ifthisparameterisnotexplicitlysetbyhigherlayers,thenTGL2=TGL1;压缩模式的参数TGD(TransmissionGapstartDi
8、stance):Thisisthedurationbetweenthestartingslotsoftwoconsecutivetransmissio