Load Balancing by Dynamic Base Station Relay Station Associations in Cellular Networks

IEEE Wireless Communications Letter, Apr. 2013
Published Date:2013-03-01
In this paper, we propose a relay-assisted load balancing scheme in cellular networks. The relay stations can be dynamically associated with different base stations. The load transferring from over-loaded cells to neighboring under-loaded cells is realized by dynamically changing the base station-relay station associations. A distributed algorithm, in which each relay station only needs to exchange information with its neighboring base stations and makes a re-association decision by itself, is proposed. Simulation results show that the overall call blocking probability can be reduced significantly when our distributed algorithm is applied.

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