Deploying relays and/or mobile base stations is a major means of extendingthe coverage of a wireless network. This paper presents models, analyticalresults, and algorithms to answer two related questions: The first is where todeploy relays in order to extend the reach from a base station to the maximum;the second is where to deploy a mobile base station and how many relays areneeded to reach any point in a given area. Simple time-division andfrequency-division scheduling schemes as well as an end-to-end data raterequirement are assumed. An important use case of the results is in the PublicSafety Broadband Network, in which deploying relays and mobile base stations isoften crucial to provide coverage to an incident scene.
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