wireless mesh networks and multi-channel communication

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1、RVSSeminarWirelessMeshNetworksandMulti-ChannelCommunicationJune6th2007MartinWengerUniversityofBerneWirelessMeshNetworksandMulti-ChannelCommunicationAgendaWirelessMeshNetworks(WMN)inGeneral>StatusQuo,Motivation>CharacteristicsofWirelessMeshNetworks>TypesofWirelessMeshNetworks(WMN)>Applications>Networ

2、kPerformanceMulti-ChannelCommunication>Multi-ChannelHiddenTerminal>MissingReceiver>ProtocolsMMAC,HMTC,AMCP>AbstractionLayer(VirtualInterfaces)Q&AMartinWenger,June6th20072WirelessMeshNetworksandMulti-ChannelCommunicationWirelessMeshNetworksandMulti-ChannelCommunicationWirelessMeshNetworks(WMN)inGener

3、alMartinWenger,June6th20073WirelessMeshNetworksandMulti-ChannelCommunicationStatusQuo,Motivation>WiFi(802.11a/b/g/...)wellestablished>Problems—1:1relationbetweenaccesspointandinternetaccess—Limitedcoverage—Roamingnotimplemented—Limitedscalability—Lowreliability(singlepointoffailure)—Architecturalbou

4、ndaries—Substantialinvestment—SlowdeploymentMartinWenger,June6th20074WirelessMeshNetworksandMulti-ChannelCommunicationCharacteristics>Super-setofAd-hocBenefits:networking>Lowinvestments>Multi-hopwirelessnetwork>Customercoverage(nodirectline-of-sight)>Reliability(nosinglepointof>Self-performing,self-

5、healing,self-organizationfailure)>Backhaulaccesstoother>Aestheticboundariesnetworks>Fastdeployment>Peer-to-peercommunication>Power-consumptionMartinWenger,June6th20075WirelessMeshNetworksandMulti-ChannelCommunicationTypesofWMN:InfrastructuralBackboneMartinWenger,June6th20076WirelessMeshNetworksandMu

6、lti-ChannelCommunicationTypesofWMN:ClientMartinWenger,June6th20077WirelessMeshNetworksandMulti-ChannelCommunicationTypesofWMN:Hybrid>CombinationInfrastructureandClient>Mostappli-cabletypeMartinWenger,June6th20078WirelessMeshNetworksandMulti-ChannelCommunicationApplications>Broadbandhomenetworking>Co

7、mmunityandneighborhoodnetworking>Enterprisenetworking>Metropolitanareanetworking(MAN)>Transportationsystems(Timetable,delayinfo)>Buildingautomations>Healthandmedicalsystems>Securitysurveillancesystems