移动自组织网络.ppt

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1、JieWuDepartmentofComputerandInformationSciencesTempleUniversityPhiladelphia,PA19122CIS9590AdHocNetworks(PartII)TableofContentsIntroductionInfrastructurednetworksHandofflocationmanagement(mobileIP)channelassignmentTableofContents(cont’d.)InfrastructurelessnetworksWi

2、relessMAC(IEEE802.11andBluetooth)AdHocRoutingProtocolsMulticastingandBroadcastingSecurityNetworkCodingTableofContents(cont’d.)Infrastructurelessnetworks(cont’d.)PowerOptimizationApplicationsSensornetworksandindoorwirelessenvironmentsPervasivecomputingSocialnetworks

3、Sampleon-goingprojectsAdHocWirelessNetworks(Infrastructurelessnetworks)Anadhocnetworkisacollectionofwirelessmobilehostformingatemporarynetworkwithouttheaidofanycentralizedadministrationorstandardsupportservicesregularlyavailableonthewideareanetworktowhichthehostsma

4、ynormallybeconnected(JohnsonandMaltz)AdHocWirelessNetworks(Infrastructurelessnetworks)Manet(mobileadhocnetworks)MobiledistributedmultihopwirelessnetworksTemporaryinnatureNobasestationandrapidlydeployableNeighborhoodawarenessMultiple-hopcommunicationUnitdiskgraph:ho

5、stconnectionbasedongeographicaldistanceSampleAdHocNetworksSensornetworksIndoorwirelessapplicationsMeshnetworksPeople-basednetworks“smallworld”thatareverylargegraphsthattendtobesparse,clustered,andhaveasmalldiameter.“sixdegreeofseparation”Self-organizing:withoutcent

6、ralizedcontrolScarceresources:bandwidthandbatteriesDynamicnetworktopologyCharacteristicsUnitDiskGraphFigure1:Asimpleadhocwirelessnetworkoffivewirelessmobilehosts.Defenseindustry(battlefield)LawenforcementAcademicinstitutions(conferenceandmeeting)Personalareanetwork

7、sandBluetoothHomenetworkingEmbeddingcomputingapplicationsHealthfacilitiesDisasterrecovery(search-and-rescue)ApplicationsApplicationsMobilitymanagementAddressingandrouting*LocationtrackingAbsolutevs.Relative,GPSNetworkmanagementMergeandsplitResourcemanagementNetwork

8、sresourceallocationandenergyefficiencyQoSmanagement*DynamicadvancereservationandadaptiveerrorcontroltechniquesMajorIssuesMACprotocols*Contentionv