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ID:25551940
大小:142.35 KB
页数:23页
时间:2018-11-21
《外文翻译--tcp友好的多播拥塞控制协议》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、外文翻译毕业设计题目:IP网络中单速率多播拥塞控制算法研究原文1:TCP-FriendlyMulticastCongestionControl(TFMCC):ProtocolSpecification译文1:TCP友好的多播拥塞控制协议:协议规范原文2:ASimpleAndEffectiveSingle-RateMulticastCongestionControl译文2:一种简单而有效的单速率多播拥塞控制方案浙江理工大学科技与艺术学院本科毕业设计(论文)TCP-FriendlyMulticastCongestionControl(TFMCC):ProtocolSpecificati
2、on1.IntroductionThisdocumentspecifiesTCP-FriendlyMulticastCongestionControl(TFMCC).TFMCCisasource-based,single-ratecongestioncontrolschemethatbuildsupontheunicastTCP-FriendlyRateControlmechanism(TFRC).TFMCCisstableandresponsiveunderawiderangeofnetworkconditionsandscalestoreceiversetsontheorder
3、ofseveralthousandreceivers.Tosupportscalability,asmuchcongestioncontrolfunctionalityaspossibleislocatedatthereceivers.EachreceivercontinuouslydeterminesadesiredreceiveratethatisTCP-friendlyforthepathfromthesendertothisreceiver.Selectedreceiversthenreporttheratetothesenderinfeedbackpackets.TFMC
4、CisabuildingblockasdefinedinRFC3048.Insteadofspecifyingacompleteprotocol,thisdocumentsimplyspecifiesacongestioncontrolmechanismthatcouldbeusedinatransportprotocolsuchasRTP,inanapplicationincorporatingend-to-endcongestioncontrolattheapplicationlevel.Thisdocumentdoesnotdiscusspacketformats,relia
5、bility,orimplementation-relatedissues.TFMCCisdesignedtobereasonablyfairwhencompetingforbandwidthwithTCPflows.Amulticastflowis‘‘reasonablyfair’’ifitssendingrateisgenerallywithinafactoroftwoofthesendingrateofaTCPflowfromthesendertotheslowestreceiverofthemulticastgroupunderthesamenetworkcondition
6、s.Ingeneral,TFMCChasalowvariationofthroughput,whichmakesitsuitableforapplicationssuchasstreamingmediawherearelativelysmoothsendingrateisofimportance.Thepenaltyofhavingsmooththroughputwhilecompetingfairlyforbandwidthisareducedresponsivenesstochangesinavailablebandwidth.ThusTFMCCshouldbeusedwhen
7、theapplicationhasarequirementforsmooththroughput,inparticular,avoidinghalvingofthesendingrateinresponsetoasinglepacketdrop.Forapplicationsthatsimplyneedtomulticastasmuchdataaspossibleinasshortatimeaspossible,PGMCCmaybemoresuitable2.Prot
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