无线协作通信中的跨层MAC协议分析

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1、AbstractCross-layerdesignisanimportanttheoreticalinnovationforwirelesscooperativecommunication.Differentfromthelayereddesign,itviewsseperativenetworklayersasawholedesign.ThisdissertationstudiesonMACprotocolwithcross-layerdesigninwirelesscooperativecommuni

2、cation,andfocusonprotocoldesignfortheenergylimitiedwirelesscooperativenetworkscenarios-Inthispaper,toexternthelifetimeofthenodeenergylimitedwirelesscooperativenetwork,anode-utility-basedwithcross-layercooperativeMACprotocolispresented.Remainenergyandchann

3、elstateinformationareconsideredtoselectabestrelayinthedatalinklayer.Thenpowerisoptimallyallocatedtosourceandrelaynodeswiththeobjectiveofminimizingthetotaltransmissionpowe匚Thesimulationresultsshowthatthenode-utility-basedMACprotocolcanwellprolongthelifetim

4、eofthewkelesscooperativenetwork.Consideringthedatalinklayersignalingoverheadtotheimpactofenergyconsumption,thispaperproposesacooperativeMACprotocolbasedoncrosslayerdesign.InthisMACprotocol,AFandpowerallocationareconsideredinphysicallayer.Signalingoverhead

5、andthreekindsofcompetitiveway(Intra-Competitionjnter-Competition,Conflict-Competition)areconsideredindatalinklaye匚Withthecombinationofthephysicallayeranddatalinklayer,thispaperputsforwardtheconceptoflinkperformance,withthisconceptthenetwokchoosesthebestre

6、lay.Theoptimalrelaynodeoccupieshighdatatransferrateandhigherresidualenergy.Simulationresultsshowthattheproposedcross-layercooperativeMACprotocolcaneffectivelyprolongthenetworklifecycle,andimproveenergyutilization.Keywords:CooperativeMACprotocol,poweralloc

7、ation,node-utility,linkperformance•crosslayerdesign,lifetime目录第一章绪论31.1研究背景31.2研究目的与意义41.3本文研究内容与结构安排5第二章协作MAC协议简述72」IEEE802.11bMAC协议72.1.1数据链路层72.1.2物理层102.2协作MAC协议112.2.1已有协议112.2.2协议研究内容142.3本章小结16第三章基于节点效用的跨层MAC协议173.1系统模型173.2解码转发系统173.3协议流程203.4仿真结果

8、与分析223.5本章小结26第四章基于链路性能的跨层MAC协议274」系统模型274.2放大转发系统274.3协议流程304.3.1物理层分析304.3.2数据链路层分析314.3.3基于链路性能的跨层协作MAC协议324.4仿真结果及分析374.5本章小结42第五章总结与展望435.1总结435.2展望43参考文献45附录1攻读硕士学位期间撰写的论文49致谢50Ill专用术语注释表缩略词说明：ACKPositiveAckno