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ID:57063525
大小:205.00 KB
页数:41页
时间:2020-07-30
《移动agent通信协议的设计与分析.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、移动agent通信协议的设计与分析答辩人:冯新宇指导教师:吕建教授南京大学计算机软件研究所2002年6月4日OutlineofPresentationIntroduction:Inter-AgentMessagePassingARP:DesignandAnalysisGeneralization:AGenericFrameworkConclusionandFutureWorkIntroduction:BasicConceptsMobileAgentsMobileAgentsareautonomousobjectsor
2、objectclusters,whichareabletomovebetweenlocationsinaso-calledmobileagentplatform.(Mole,UofStuttgart)MobileAgentPlatformAmobileagentplatformisadistributedabstractionlayerthatprovidestheconceptsandmechanismsformobilityandcommunicationononehand,andsecurityoftheunde
3、rlyingsystemontheotherhand.WhyMessagePassingMobileAgentSystemcanbeusedasGeneral-PurposeDistributedComputingMiddlewarePlatform.SometimesMessagePassingismoreefficientthanmigrationThereDOexistMA-basedapplicationsthatneedsremotemessagepassingbetweencooperatingagents
4、.Inter-AgentMessagePassing-RequirementsLocationTransparencyMessagesenderdoesnotneedtoknowthephysicallocationofthereceiveragent,whoseaddresschangesfrequentlybymovingfromonehosttoanother.ReliabilityTheconcurrentandasynchronousnatureofmessageforwardingandagentmigr
5、ationmaycausemessagelossorchasingproblem.Byreliabilitywemeanthemessagecanreachthetargetagentbyaboundednumberofforwarding.MAPMAPMAPMAPInter-AgentMessagePassing-RequirementsEfficiencyLowlocationupdatingoverheadLowmessagedeliveryoverheadAsynchronyAsynchronousexecu
6、tionLittleconstraintonthemobileagentmobility.AdaptabilitySuitdifferentCommunicationandMigrationPatternIntroduction:Inter-AgentMessagePassingARP:DesignandAnalysisDesignofARPAnalysisofARPImprovementsGeneralization:AGenericFrameworkConclusionandFutureWorkDesignofAR
7、P(AdaptiveandReliableProtocol)MobileIPsolutionExtention1:MobileIP+SynchronizationExtension2:DistributedHomeSchemeExtension3:Mailbox-BasedScheme=ARPMobileIPSolutionMAPMAPMAPMAP-HomeRegDesignofARPMobileIPsolutionNoReliabilitySupportExtention1:MobileIP+Synchronizat
8、ionTheagenthomecoordinatesmessagepassingandagentmigrationExtension2:DistributedHomeSchemeExtension3:Mailbox-BasedScheme=ARPMAPMobileIP+SynchronizationMAPMAPMAP-HomeDe
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