in computer and information sciencesdnew

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1、2013IEEEWirelessCommunicationsandNetworkingConference(WCNC):NETWORKSCongestionControlforM2MTrafficwithHeterogeneousThroughputDemandsRayK.LamKwang-ChengChenIntel-NTUConnectedContextComputingCenterGraduateInstituteofCommunicationEngineeringNationalTaiwanUniversityNationalTaiwanUniversityTaipei,Taiwan

2、Taipei,TaiwanEmail:raykonglam@ntu.edu.twEmail:chenkc@cc.ee.ntu.edu.twAbstract—Machine-to-machine(M2M)communicationsareappliedtocontrolM2Mtraffic.1bringingnewchallengestocongestioncontrolintheInternetofThings.OnekeyissueistofacilitatetheproperfunctioningFirst,AIMDaimsatachievingmax-minfairbandwidths

3、haring.2Itmeansthat,roughlyspeaking,allflowsgoingofawiderangeofM2Mapplicationswithdrasticallydifferentthroughputdemands.TraditionalInternetcongestioncontrolthroughacommoncongestedlinkreceiveanequalshareofalgorithmsaimatsharingbandwidthamongtrafficflowsequally,bandwidthfortheirtransmissions.Thisisnoti

4、dealforM2MlimitingtheirsuitabilityforM2Mcommunications.Tomaintaintrafficflows,asflowsfordifferentM2MapplicationsmaycomparablelevelsofQoSofheterogeneousM2Mapplicationshavedrasticallydifferentbandwidthrequirementsfortheirwhencongestionispresent,weproposeadistributedcongestionappropriatefunctioning.(For

5、example,comparevideosurveil-controlalgorithmwhichallocatestransmissionratestoM2Mlanceandtemperaturemonitoring.)Whencongestionoccurs,flowsinproportiontotheirdemands,throughtheuseofasimpleforcingallM2Mapplicationstotransmitatthesame(low)techniquewhichwecall“proportionaladditiveincrease”.Toeaseratewil

6、ldegradetheQoSofapplicationswithhighthroughputM2Mapplicationdevelopment,wemakeafurtherattempttosta-bilizethethroughputsofM2Mflowscontrolledbythealgorithm.demandssignificantly,whilethisdegradationcanactuallybeWepresentsimulationresultstoillustratetheeffectivenessofthemoreevenlysharedwithotherapplicat

7、ionsrequiringloweralgorithminachievingthedesiredrateallocation,aswellasthethroughputs.challengewefaceinstabilizingthroughputs.Second,theAIMDalgorithmyieldsunstablethroughputstoflowsgovernedbyit.Thisisbecausethealg