外文翻译--tcp友好的多播拥塞控制协议

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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):Protoc

2、olSpecification1.IntroductionThisdocumentspecifiesTCP-FriendlyMulticastCongestionControl(TFMCC).TFMCCisasource-based,single-ratecongestioncontrolschemethatbuildsupontheunicastTCP-FriendlyRateControlmechanism(TFRC).TFMCCisstableandresponsiveunderawiderangeofnetworkconditionsandscal

3、estoreceiversetsontheorderofseveralthousandreceivers.Tosupportscalability,asmuchcongestioncontrolfunctionalityaspossibleislocatedatthereceivers.EachreceivercontinuouslydeterminesadesiredreceiveratethatisTCP-friendlyforthepathfromthesendertothisreceiver.Selectedreceiversthenreportt

4、heratetothesenderinfeedbackpackets.TFMCCisabuildingblockasdefinedinRFC3048.Insteadofspecifyingacompleteprotocol,thisdocumentsimplyspecifiesacongestioncontrolmechanismthatcouldbeusedinatransportprotocolsuchasRTP,inanapplicationincorporatingend-to-endcongestioncontrolattheapplicatio

5、nlevel.Thisdocumentdoesnotdiscusspacketformats,reliability,orimplementation-relatedissues.TFMCCisdesignedtobereasonablyfairwhencompetingforbandwidthwithTCPflows.Amulticastflowis‘‘reasonablyfair’’ifitssendingrateisgenerallywithinafactoroftwoofthesendingrateofaTCPflowfromthesenderto

6、theslowestreceiverofthemulticastgroupunderthesamenetworkconditions.Ingeneral,TFMCChasalowvariationofthroughput,whichmakesitsuitableforapplicationssuchasstreamingmediawherearelativelysmoothsendingrateisofimportance.Thepenaltyofhavingsmooththroughputwhilecompetingfairlyforbandwidthi

7、sareducedresponsivenesstochangesinavailablebandwidth.ThusTFMCCshouldbeusedwhentheapplicationhasarequirementforsmooththroughput,inparticular,avoidinghalvingofthesendingrateinresponsetoasinglepacketdrop.Forapplicationsthatsimplyneedtomulticastasmuchdataaspossibleinasshortatimeasposs

8、ible,PGMCCmaybemoresuitable2.Prot