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ID:33381160
大小:7.98 MB
页数:63页
时间:2019-02-25
《lte网络中基于能效的资源分配方法-研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、AbstractInthepasttwoyears,LongTermEvolution(LTE)isthelargestnewtechnologvresearchanddevelopmentproject3GPPlaunchedwhichismarkedbythenewstructure.OrthogonalFrequencyDivisionMultipleAccess(OFDM)andMultiple.InputMultiple·Output(MIMO).However,powerconsumptionofthewholecommunica
2、tionsystemisrisingsharply,becauseoftherapidgrowthofdatatrafficrequirementandconstantenlargementoftheconstructionscaleofbasestation.Thisnotonlybringsagreaterburdentotheoperator’Soperatingcosts,butalsobringstheenvironmentalpollution.Therefore,theconceptofgreencommunicationhas
3、been撕sed.T11ist11esisfirstintroducesthestatusdomesticandinternationalrelatedtotheenergyefficienttechnologyofgreencommunication,andanalyzesthedevelopmentandexistproblemsforenergysavingandlowcarbontechnologiesinwirelesscommunicationnetworks.Then,anenergy—efficientresourceallo
4、cationoptimizationmodelisbuilttos01vetheproblemoftransmissionenergyconsumptionindownlinkLTEsystem.whichissuitableforunbalancedlowloadscenarios.Atthesametime,asub.optimizationenergy-efficientresourceallocationmethodERALisproposedtosolvetheenergy-efficientoptimizationproblem.
5、Inunbalancedlowloadscen撕os.weconlbinetheloadbalancingwithbandwidthexpansioneffectivelywhichwillmakeuseoftheidlewirelessresourcesmoreefficient,andfinallyreducethedownlinkenergVconsumptionofthewholenetwork.SimulationresultsshowthatERALcanmake觚luseofthelimitedresourcestobringc
6、onsiderableenergyconsumptiongainin10wloadseena—OS.Finally,basedontheERALandlinkadaptivetechnology,anadvancedenergy。efficientresourceallocationmethodAERALisproposed.ThroughallocatePhysicalResourceBlock(PRB)toeachuseraccordingtothenumberofPRBtheyrealneedforreduceoneModulation
7、andCodingScheme(MCS)level,AERALcan如rtherreducethedownlinktransferenergyconsumptioninLTEsystemandmaintaincun.entservicequalityoftheusers.Atlast,thevalidityoftheAERALisverifiedbysimulation.KeyWords:LTE,Energyefficient,Loadbalancing,Resourceallocation.BaIldwidthexpansionIIl重庆邮
8、电大学硕士论文IV目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.IAbstract⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.⋯⋯⋯⋯.
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