基于选择策略异构网络接入演示平台优化与实现

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1、入网络，保障用户QoS并兼顾系统负载均衡。通过matlab仿真表明，该网络选择接入算法能更好地利用网络资源，为用户更加合理地选择网络接入，并能实现负载均衡。本文采用多种软硬件技术相结合的解决方案，优化并实现了用于模拟真实无线异构网络环境下选择接入算法的演示平台。该平台能够直观地体现网络选择接入算法对网络资源的高效利用与最优网络的选择效果。平台包括具有多网络选择接入功能的多媒体演示客户端和运行网络选择接入算法的网络管理服务器。平台严格遵循软件开发工程的思想，对系统进行需求分析、系统总体设计和详细方

2、案设计，并对核心功能模块的编码和实现进行了详细论述。最后通过在演示平台中多媒体业务对异构网络选择接入控制的系统测试表明：所提算法在提升系统资源利用率和均衡网络负载方面有较好的性能，同时该演示平台也为今后研究异构网络的协同工作提供了重要的实验基础。关键词：异构无线网络；网络选择；演示平台；软硬件技术IMPLEMENTATIONANDOPTIMIZATIONOFACCESSCONNTROLDEMOPLATFORMBASEDONCHOICESTRATEGYINHETEROGENEOUSWIRELESS

3、NETWORKABSTRACTWiththerapiddevelopmentofwirelesscommunicationtechnologyandtheincreasingcommunicationdemand,theco-existenceofmanykindsofheterogeneouswirelessnetworkswillbethetrendofthedevelopmentofthemobiletelecommunication.Thehotresearchtopicinhetero

4、geneouswirelessnetworkishowtoequitablyallocatenetworkresourcesandimprovetheQoSsatisfactionforuser,bytakingadvantageofeachaccessnctwork.Theaccesscontrolschemeisamajorpartofradioresourceinanagementinheterogeneouswirelessnetwork.Inthefirstplace,theresea

5、rchstatusofJointmanagementofJointradioresourcemanagementandnetworkselectionaccessalgorithmsisanalyzedandsummarized.Afterthat,networkaccessselectionalgorithmsbasedoncharacteristicsofdifferentnetworkservicesandloadbalanceisproposed,whichhasasignificant

6、impactonQoSsatisfactionandresourceutilizationefficiency・InconsiderationofavarietyofnetworkdecisionfactorsandQoSparameters,thedominantdecisionfactorsareselectedinthenetworkaccessselectionalgorithm.Thealgorithmiscomposedoftwoparts,oneistheutilityfuncti

7、onbasedonAHPwhichcalculatestheprioritylistofaccessnetworks,andtheotherisjointoptimizationfunctionwhichdecidesthefinalaccessselectnetwork,aimingatguaranteeingtheQoSofusersaswellasbalancingtheloadofthenetworks.Simulationresultofmatlabshowsthatthepropos

8、edalgorithmcanmakebetteruseofnetworkresources,andprovideusersmorereasonablechoicefornetworkaccess・Thedemosystemwasdevelopedwithalotofmaturesoftwareandhardwaretechnology,itisoptimizedanddesignedtosimulatethenetworkaccessselectionintherealheterogeneous