有線-無線混合網(wǎng)絡顯式反饋擁塞控制協(xié)議的研究.pdf

1、中南大學碩士學位論文有線無線混合網(wǎng)絡顯式反饋擁塞控制協(xié)議的研究姓名：李婧申請學位級別：碩士專業(yè)：計算機科學與技術指導教師：王建新20100501ABSTRACTWithrapidadvancesinthedeploymentofveryhighspeedlinksinthewiredcorenetworkandgrowingrequirementsofhighspeedwirelessaccessoverwired／wirelesshy

2、bridnetworksthetraditionalcongestioncontrol(TCP)mechanismssuffersgreatinefficiencyunfairness，oscillationandlongqueuingdelayVarioustransportprotocolshavebeensuggestedtoaddresstheseproblemsinrecentyearsThisthesismainlydisc

3、ussescongestioncontrolprotocolsbasedonECN(ExplicitCongestionNotification)ThesourceusestheloadinformationfromtheinnerrouterstoupdateitscongestionwindowThereforeECNbasedprotocolscancontrolthenetworkbehaviormoreaccuratelyan

4、dobtainbetterperformanceFirstlythethesisreviewstheresearchesofTCPinrecentyears，mainlyfocusesonECNbasedprotocolsoverwired／wirelesshybridnetworksincludingoneIEEE80211hopBasedonthisstudythethesisemphaticallyanalyzestheinflu

5、enceofRTTbandwidthofthebottlenecklinkrouterbu恐rsizeandthenumberofflowsontheperformanceofexplicitfeedbackprotocolsXCPandXCPBInthefollowing，thisthesispresentsafasttransportprotocolbasedonexplicitcongestionnotificationoverw

6、ired／wirelessnetworksARROWj、^丌CP(AcceleRatetRansmissiontowardsOpticalwindowsizeTCPforWirelessnetwork)，whichprovidesajointdesignofsourceandrouteralgorithmsTheyformaclosedfeedbackcontrolsystemARROW二Ⅵ丌CPenablesfeasibledeplo

7、ymentofARROWTCPfromwiredtowirelessnetworksSimulationresultsdemonstratethatARROW二Ⅵ嚇CPoutperformsXCPBintermsofstabilityfaimessconvergenceandutilizationunderhighlydynamicwirelessnetworksFinallythethesissummarizesthecurrente