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1、壓縮模式介紹壓縮模式的應(yīng)用壓縮模式(CompressedMode)可用于頻間硬切換、模式間切換和系統(tǒng)間切換的測(cè)量。TGMP:TransmissionGappatternsequenceMeasurementPurpose:Thisparameterdefinesthepurposethistransmissiongappatternsequenceisintendedfor.Thefollowingvaluesareused:-forTDDmeasurements,onecompressedmodepatternsequencecanbecon
2、figuredwithpurpose'TDDmeasurement‘.forFDDmeasurements,onecompressedmodepatternsequencecanbeconfiguredwithpurpose'FDDmeasurement‘.forGSMmeasurements,threesimultaneouscompressedmodepatternsequencescanbeconfiguredwithpurposes'GSMcarrierRSSImeasurement','InitialBSICidentificatio
3、n'and'BSICre-confirmation‘.壓縮模式的應(yīng)用需要UE進(jìn)行測(cè)量時(shí),為使UE能夠執(zhí)行測(cè)量工作,UTRAN會(huì)命令UE進(jìn)入壓縮模式,同時(shí)告訴UE具體的壓縮模式參數(shù)。而UE響應(yīng)收到的“高層命令”(HigherLayersCommands),進(jìn)入壓縮模式進(jìn)行測(cè)量。單接收機(jī)的UE必須同時(shí)支持上、下行壓縮模式;而雙接收機(jī)的UE,在其中一個(gè)用于測(cè)量接收,而另一個(gè)用于UTRAFDD接收時(shí),可以不必支持下行壓縮模式,但仍然必須支持上行壓縮模式。一般情況下,可以認(rèn)為上下行壓縮模式,UE都必須支持。壓縮模式配置流程RNCNodeBUESynchr
4、onisedRadioLinkReconfigurationPreparationRadioLinkReconfigurationReadyCompressedModeCommandSynchronisedRadioLinkReconfigurationCommitPhysicalChannelReconfigurationPhysicalChannelReconfigurationCompleteMeasurementcontrol壓縮幀GAP位置壓縮幀GAP的長度不能大于7.5slot,GAP的位置有下面兩種情況:壓縮模式的參數(shù)壓縮圖案壓縮
5、模式的參數(shù)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;壓縮模式的參數(shù)TGD(TransmissionGapstartDi
8、stance):Thisisthedurationbetweenthestartingslotsoftwoconsecutivetransmissio