蜂窩通信系統(tǒng)中越區(qū)切換的資源預(yù)留機(jī)制研究.pdf

1、分類號TN92953密經(jīng)重慶郵電大學(xué)碩士學(xué)位論文論文題層蜂蟄通信系統(tǒng)中越區(qū)切換的資源預(yù)留機(jī)制研究英文題目AStudyofResourceReservationSchemeDuringHandofrInCellularNetworks碩士研究疊虛疆燕指導(dǎo)教師籃圭墼蕉學(xué)科專業(yè)透揎當(dāng)籃患系統(tǒng)論文提交日期2QQ6。5。24論文簪辯日期2QQ丘丘4論文評閱人棗醚羞教授重慶盤掌氳蠢自耋基重鏖堅蟲太堂答辯委員會主席李時光教授重慶大學(xué)2006年4胄20

2、囂L簸慶郵電大學(xué)碩士論文摘臻AbstractwiththedevelopmentofmobilecommunicationsmobileusersandIntemetusersareincreasingdramaticallyPeopleexpectthatnextgenerationmobilecommunicationsystemscailprovidelargercapacityandsupportmobilemultimedia

3、servicesBesidesprovidingrealtimespeechservicenextgenerationmobilecommunicationsystemsarerequiredtosupportnonrealtimeservices，suchaslow／highratedatapicturesetc。Heterogeneousserviceshavedifferentqualityofservice(QoS)requir

4、ements，forexample，therequirementsoftimedelayerrorbitrate，andtransmissionrateforheterogeneousservicesaredifferentiatedIncellularnetworks，QoSdegradationorforcedterminationmayoccurwhenthereareinsu援cientresourcestoaccommodat

5、ehandoffrequestsOnesolutionistopredictthetrajectoryofmobileterminalsSOastoperformresourcereservationsinadvanceWl氌thevisionthatfuturemobiledevicesarelikelytobeequipped誠氌reasonablyaccuratepositioningcapabilityWeinvestigate

6、howthisnewfeaturemaybeusedformobiti移predictionsWeproposeanewresotlrcereservationschemeduringhandoffInordertoprovidebetterusageofscarceresourceinwirelessbroadbandnetworks，theareaofaceIliSdividedinto：theoutertierandtheinne

7、rtierAtargetcellispredictedbyextrapolatingthetrajectoryofMSsInorderteducesignalingoverhead，channelisreservedonlyinthetargetcellasMSsmoveintotheoutertierandleavetheservingbasestation∞S)TheamountofchanneltobereservediSdyna

8、micallyadjustedaccordingtotheinshaiRaneousvariationofmobilityconditionofMSsInaddition，theproposedsehameincorporateschannelborrowingmechanismintocalladmissioncontrolstrategySimulationresuRsarepresentedtodemonstratetheimpr