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1Acriticalreviewof
Wirelessmeshnetworks:
asurvey
Thewirelessteamof
NIC@USTC编辑ppt2OutlineIntroductionWMNsNetworkArchitecture
CharacteristicsApplicationScenariosPhysicalLayerMediumAccessControlNetworkLayerTransportLayerApplicationLayerCross-layerdesignResearchTestbedsConclusionFuturework编辑ppt3InternetGatewayInternetInternetGatewayInternetIntroduction—WhatisWMN?ExtendcoverageFacilitatedeployment编辑ppt4OutlineIntroductionWMNsNetworkArchitecture
CharacteristicsApplicationScenariosPhysicalLayerMediumAccessControlNetworkLayerTransportLayerApplicationLayerCross-layerdesignResearchTestbedsConclusionFuturework编辑ppt5WMNsNetworkArchitecture
NetworkArchitectureClassificationBackboneClientsHybrid编辑ppt6Backbone
编辑ppt7Clients
编辑ppt8Hybrid
编辑ppt9OutlineIntroductionWMNsNetworkArchitecture
CharacteristicsApplicationScenariosPhysicalLayerMediumAccessControlNetworkLayerTransportLayerApplicationLayerCross-layerdesignResearchTestbedsConclusionFuturework编辑ppt10Characteristics
Multi-hopwirelessnetworkSupportforadHocnetworking,andcapabilityforselfforming,self-healing,andself-organizationMobilitydependenceontheapplicationdomainsandontheradiosProvidingbothbackhaulaccesstoexternalnetworksandpeer-to-peer(P2P)communicationwithintheinternalnetworkDependenceofpower-consumptionconstraintsonapplicationsCompatibleandinteroperablewithotherwirelessnetworks编辑ppt11OutlineIntroductionWMNsNetworkArchitecture
CharacteristicsApplicationScenariosPhysicalLayerMediumAccessControlNetworkLayerTransportLayerApplicationLayerCross-layerdesignResearchTestbedsConclusionFuturework编辑ppt12ApplicationScenarios
BroadbandHomeNetworkingBuildingAutomationEnterpriseNetworkingMetropolitanAreaNetworksSecuritySurveillanceSystems编辑ppt13OutlineIntroductionWMNsNetworkArchitecture
CharacteristicsApplicationScenariosPhysicalLayerMediumAccessControlNetworkLayerTransportLayerApplicationLayerCross-layerdesignResearchTestbedsConclusionFuturework编辑ppt14PhysicalLayer
Thekeyfunctionsofphysicallayerspectrumutilizationrobustnesstointerference,fading,andshadowing编辑ppt15Phy-OpenResearchIssues
Itisstillnecessarytofurtherimprovetheperformanceofphysicallayertechniques.Tobestutilizetheadvancedfeaturesprovidedbyphysicallayer,higherlayerprotocols,especiallyMACprotocols,needtobere-designed.Otherwise,theadvantagesbroughtbysuchphysicallayertechniqueswillbesignificantlycompromised
编辑ppt16OutlineIntroductionWMNsNetworkArchitecture
CharacteristicsApplicationScenariosPhysicalLayerMediumAccessControlNetworkLayerTransportLayerApplicationLayerCross-layerdesignResearchTestbedsConclusionFuturework编辑ppt17MediumAccessControl
DifferencesbetweenMeshmacandwirelessmacMACforWMNsisconcernedwithmorethanonehopcommunication.MACisdistributedandcooperativeandworksformultipoint-to-multipointcommunication.Networkself-organizationisneededfortheMAC.MobilityaffectstheperformanceofMAC.编辑ppt18MACLAYER-OpenResearchIssuesScalableSingle-ChannelMACsScalableMulti-ChannelMACsMAC/PhysicalCross-LayerDesignNetworkIntegrationintheMACLayerMACProtocolImplementation编辑ppt19OutlineIntroductionWMNsNetworkArchitecture
CharacteristicsApplicationScenariosPhysicalLayerMediumAccessControlNetworkLayerTransportLayerApplicationLayerCross-layerdesignResearchTestbedsConclusionFuturework编辑ppt20NetworkLayer
TheroutingprotocolforWMNsmustcapturethefollowingfeatures:PerformanceMetrics.Faulttolerancewithlinkfailures.LoadBalancing.Scalability.编辑ppt21Networklayer-OpenResearchIssuesScalability.BetterPerformanceMetricsRouting/MACCross-LayerDesignHybridRouting编辑ppt22OutlineIntroductionWMNsNetworkArchitecture
CharacteristicsApplicationScenariosPhysicalLayerMediumAccessControlNetworkLayerTransportLayerApplicationLayerCross-layerdesignResearchTestbedsConclusionFuturework编辑ppt23TransportLayer
ReliableDataTransportTCPvariants
Non-CongestionPacketLosses.
UnknownLinkFailureNetworkAsymmetryLargeRTTVariationsNewtransportprotocols编辑ppt24TransportLayer-OpenResearchIssuesCross-layerSolutiontoNetworkAsymmetryAdaptiveTCP编辑ppt25OutlineIntroductionWMNsNetworkArchitecture
CharacteristicsApplicationScenariosPhysicalLayerMediumAccessControlNetworkLayerTransportLayerApplicationLayerCross-layerdesignResearchTestbedsConclusionFuturework编辑ppt26ApplicationLayer
NetworkManagementNetworkConfigurationAuthentication,Authorization,andAccounting
编辑ppt27ApplicationLayer-OpenResearchIssuesNetworkmanagementprotocolsEffectivedataprocessingalgorithmsHowtoquicklydeterminenetworktopologyandtheaccuratelocationofameshnodeDevelopinganefficientAAAsystem
编辑ppt28OutlineIntroductionWMNsNetworkArchitecture
CharacteristicsApplicationScenariosPhysicalLayerMediumAccessControlNetworkLayerTransportLayerApplicationLayerCross-layerdesignResearchTestbedsConclusionFuturework编辑ppt29Cross-LayerDesign
Cross-layerdesigncanbeperformedintwoways.ImprovetheperformanceofaprotocollayerbyconsideringparametersinotherprotocollayersMergeseveralprotocolsintoonecomponent,e.g.,inadhocnetworks,MACandroutingprotocolscanbecombinedintooneprotocolinordertocloselyconsidertheirinteractions编辑ppt30OutlineIntroductionWMNsNetworkArchitecture
CharacteristicsApplicationScenariosPhysicalLayerMediumAccessControlNetworkLayerTransportLayerApplicationLayerCross-layerdesignResearchTestbedsConclusionFuturework编辑ppt31ResearchTestbeds-AcademicCarnegie-MellonUniversity'smobileadhocnetworktestbedMIT'sRoofnetSUNYStonyBrookCaliforniaInstituteforTelecommunicationsandInformationTechnology(Cal-(IT)^2)TheBroadbandandWirelessNetwork(BWN)LabatGeorgiaTech编辑ppt32IndustrialPracticeMicrosoftResearchLab(MSR)INTELNORTEL:KiyonInc…编辑ppt33OutlineIntroductionWMNsNetworkArchitecture
Charact
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