A Distributed Topology Adjustment Algorithm for Wireless Networks with Mobile Base Stations
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Abstract
Improper static network topology can reduce the capacity of wide area wireless access networks in which the distribution of subscribers' population often changes. This paper focuses on "fully wireless cellular networks" with mobile base stations, where the network topology can be dynamic due to the mobility of the base stations. In such environment, network topology can be properly controlled by the adjustment of mobile base stations' positions. A novel distributed topology adjustment algorithm is proposed in this paper. The proposed algorithm tracks subscriber's population by moving mobile base stations toward the center of their nearby groups of subscribers. At the same time, mobile base stations are also drawn outward their neighboring base stations in order to solve the "oversupply base station" problem. The balance between 2 movement forces determines the proper position of mobile base stations. The performance evaluation of the proposed algorithm shows that the proposed algorithm performs well, even in rapidly changes of subscribers' population or in the presence of failure of base stations.
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