كلية الهندسة, جامعة أسيوط، قسم الهندسة المدنية

Distributed patching for mobile wireless sensor networks
ملخص البحث:		Mobilewirelesssensornetworks(MWSNs),thecontinuousmovementofsensornodes,maycause completedisconnectionofthenetworkoratbestapartofit.Thedesignofsuchnetworksshould guaranteethatallsensornodesatalltimeshaveapathtothesinknode(s).Prolongingthelifetimesof the MWSNsisacrucialdesignissuebutshouldnotbeattheexpenseofotheressentialfunctionssuch as connectivity.Inthispaper,weproposeanenergyefficientdistributedframeworkforconnectivity maintenanceofMWSNs.Intheproposedframework,sensornodesoftheMWSNsscheduleandcontrol their radiofrequency(RF)modulesbasedondynamiccoordinatedreconstructionmechanism,some senornodesmaylosetheirconnectivitywiththenetworkduetomobility,depletionofenergyand/or incurredfaults.TwoprotocolsaredevelopedtopatchupthedisconnectionoftheMWSNs.Thefirst protocolreestablishesthenetworkconnectionconsumingfarlessenergythanstate-of-the-art alternatives.However,itiscapableofreestablishingtheconnectionwhennomorethan20%ofthe MWSN backbonenodesloseconnectionconcurrently.Thesecondprotocolextendsthislimittooperate when upto35%oftheMWSNbackbonenodesloseconnectionsimultaneously.

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