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1、ComputerNetworks43(2003)75–112www.elsevier.com/locate/comnetInterPlaNetaryInternet:state-of-the-artandresearchchallengesIanF.Akyildiz,OOzg€uurB.Akan€*,ChaoChen,JianFang,WeilianSuBroadbandandWirelessNetworkingLaboratory,SchoolofElectricalandComputerEngineering,GeorgiaInstituteofTechnology,Atlan
2、ta,GA30332,USAReceived30June2003;accepted3July2003ResponsibleEditor:I.F.AkyildizAbstractThedevelopmentsinthespacetechnologiesareenablingtherealizationofdeepspacescientificmissionssuchasMarsexploration.InterPlaNetary(IPN)Internetisexpectedtobethenextstepinthedesignanddevelopmentofdeepspacenetwor
3、ksastheInternetofthedeepspaceplanetarynetworks.However,thereexistsignificantchallengestobeaddressedfortherealizationofthisobjective.Manyresearchersandseveralinternationalorganizationsarecurrentlyengagedindefiningandaddressingthesechallengesanddevelopingtherequiredtechnologiesfortherealizationoft
4、heInterPlaNetaryInternet.Inthispaper,thecurrentstatusoftheresearcheffortstorealizetheInterPlaNetaryInternetobjectiveiscaptured.Thecommunicationarchitectureispresented,andthechallengesposedbytheseveralaspectsoftheInterPlaNetaryInternetareintroduced.Theexistingalgorithmsandprotocolsdevelopedforea
5、chlayerandtheotherrelatedworkareexplored,andtheirshortcomingsarepointedoutalongwiththeopenresearchissuesfortherealizationoftheInterPlaNetaryInternet.TheobjectiveofthissurveyistomotivatetheresearchersaroundtheworldtotacklethesechallengingproblemsandhelptorealizetheInterPlaNetaryInternet.Ó2003El
6、sevierB.V.Allrightsreserved.Keywords:InterPlaNetaryInternet;Deepspacenetworks;Spacemissions;Architecture;Transportlayer;Networklayer;Datalinklayer;Physicallayertechnologies;Deepspacetimesynchronization1.IntroductionmissionssuchasMarsexploration.Thevisionoffuturespaceexplorationincludesmissions
7、todeepThedevelopmentsinthespacetechnologiesarespacethatrequirecommunicationamongplanets,enablingtherealizationofdeepspacescientificmoons,satellites,asteroids,roboticspacecrafts,andcrewedvehicles.Thesemissionsproducesig-nificantamountofsci