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In this paper, the authors consider resource allocation schemes in two-hop relaying WiMAX networks in order to maximize cell throughput, while serving the Subscriber Stations (SSs) in a fair manner. First they present two well-known schemes, namely, orthogonal and overlapped, according to the frequency reuse during the access zone intervals of downlink and uplink sub-frames. They then propose a hybrid resource allocation scheme to harmonize the orthogonal and overlapped schemes in order to improve the efficiency of resource utilization while minimizing interference. They evaluate the performance of their proposed hybrid scheme by comparing it with the optimal scheduling scheme as well as the orthogonal and overlapped schemes, in terms of cell throughput, outage rate, and computation time.
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