异构网络负载均衡机制研究

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1、AbstractWirelessnetworkswillcontainavarietyofwirelessaccesstechnologiesinthefuture，thesedifferentnetworkswithoverlappingareaarecalledheterogeneousnetworks(Hetnets).Asoneofthekeytechnologiesofheterogeneouswirelessnetworks,loadbalancingisasignificantmethodtoachievetheeffectiv

2、eresourceutilization,enlargesystemcapacity,andavoidnetworkcongestion.Thisthesismainlystudiesloadbalancingalgorithminheterogeneouswirelessnetworks.First,theheterogeneouswirelessnetworkarchitectureisbrieflyintroducedandthreearchitecturesofjointradioresourcemanagementarediscus

3、sed.Second,basedonthecurrentresearchofloadbalancingalgorithminheterogeneousnetworks,aloadbalancingalgorithmbasedonutilityfunctionsandfuzzylogicisdiscussed,thealgorithmcombinedthreeutilityfunctionswithfuzzylogicmethodtocompleteloadbalancing.Simulationresultsshowthatthefuzzyl

4、ogicloadbalancingalgorithmperformsmuchbetterthanthealgorithmwithoutloadbalancingandMLBalgorithmwithrespecttothesystemblockingprobability,averagetransmissiontimeandnetworkloadrate.Third,becauseofthediversityofservicesinheterogeneousnetworks,inordertoachieveloaduniformdistrib

5、ution,aswellastoensurethequalityofservices,QoS-Awarebalancingalgorithmisdiscussed.Afterthesimulation,itisprovedthattheQoS-Awarealgorithmhasasignificantincreaseinnetworkperformancecomparedwithotheralgorithms.Keyword:HeterogeneousWirelessNetworksLoadBalancingFuzzyLogicQuality

6、ofService目录第一章绪论................................................................................................................11.1引言...............................................................................................................11.2论文选题及研究意义................

7、...................................................................21.3本文主要工作和内容安排...........................................................................2第二章异构网络架构及负载均衡现状....................................................................52.1异构网络融合架构....................

8、...................................................................52.1.1异构网络场景...