稀疏车辆ad hoc网络中基于受控机制自适应epidemic路由算法

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1、稀疏车辆AdHoc网络中基于受控机制自适应Epidemic路由算法　　文章编号:10019081(2013)07181604doi:10.11772/j.issn.10019081.2013.07.1816摘要：针对传统Epidemic的性能缺陷，提出了基于控制机制的自适应Epidemic路由(AdEPI)算法。AdEPI算法采用受控洪泛机制和信息副本控制等机制，并引入信息生存时间和自适应控制策略，在确保有较高到达率的条件下，取得了峰值传输控制、带宽资源占用、缓存利用和时延等方面的综合平衡。在VanetMobiSim仿真平台上，对AdEPI算法进行了VC++6.0

2、编程实现和仿真，并与经典Epidemic算法进行了性能对比。仿真结果证实，AdEPI算法与Epidemic比较，付出较小的时延代价，却具有了带宽占用减少27.62%，峰值平均降低15.19%，缓存利用率提高92.14%等优势。AdEPI算法在上述三个方面的性能提升，具有工程意义和应用价值。关键词：稀疏车辆AdHoc网络；自适应Epidemic路由；受控机制；延迟容忍网络中图分类号：TN929.5文献标志码:A4英文标题AdaptiveepidemicroutingalgorithmbasedoncontrolledmechanismforsparsevehicleAdHocn

3、etworks英文作者名SUChunbo1,2，XUJiapin1*英文地址(1.CollegeofElectronicsandInformationEngineering,SichuanUniversity,ChengduSichuan610065,China;2.SchoolofInformationScienceandTechnology,ChengduUniversityofTechnology,ChengduSichuan610059,China英文摘要)Abstract：AdaptiveEpidemicrouting(AdEPI)algorithmba

4、sedoncontrolmechanismwasproposedtoovercometheperformancedefectsoftraditionalEpidemicalgorithm.Theoverallbalanceofthepeaktransmissioncontrol,bandwidthresourceconsumption,cacheutilizationanddelaywere4achievedbyusingcontrolledfloodingmechanism,andinformationcopycontrolmechanism,introductionofinformati

5、ononsurvivaltime(lifetimeofinformation)andadaptivecontrolstrategyundertheconditiontoensurethatthereisahigharrivalrate.TheAdEPIalgorithmwasusedinVC++6.0programmingandsimulationandcomparedwiththeclassicEpidemicalgorithmontheVanetMobiSimsimulationplatform.ThesimulationresultsconfirmthattheAdEPIalgor

6、ithmnotonlypaysasmallerdelaycostthanclassicEpidemicalgorithmbutalsoobtainsareturnofbandwidthusagedecreasingby27.62%,peakreducingby15.19%onaverage,cacheutilizationincreasingby92.14%andsoon.TheAdEPIalgorithmhasachievedperformanceimprovementsinthethreeabovementionedareas,andithasengineeringsignifican

7、ceandapplicationvalue.AdaptiveEpidemicrouting(AdEPI)algorithmbasedonthecontrolmechanismwasproposedfortheperformancedefectsoftraditionalEpidemic.Theoverallbalanceofthepeaktransmissioncontrol,4bandwidthresou