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Efficient relay station placement strategy for broadband wireless networks - 4G

WiMAX (Worldwide interoperability for Microwave Access) is the emerging broadband wireless access technology that allows interoperability and combines the benefits offered by other wireless networking technologies. This allows WiMAX to lead the path towards 4G. To meet the growing demand for throughput, and in order to relay traffic for Subscriber Stations (SS), Relay station (RS) is introduced by WiMAX networks. The coverage area of a Base Station (BS) can be extended by RSs. It is not easy to install many BSs which involve more cost and infrastructure this type of architecture is suitable for rural areas. The problem of finding location to place the RS exists in these broadband WiMAX networks. To solve this problem, an efficient RS placement strategy is proposed in this work. The RS placement will increase the throughput of the network. For the given MS distribution this algorithm will give the efficient results for the relay location planning. The throughput is to be improved further by taking into account the frequency reuse concept and the inter-cell interference caused due to it. The simulation result depicts the performance of the proposed algorithm.