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The relay enabled broadband wireless access is based on the IEEE 802.16j standard and acts as a promising technology to construct the next generation high speed metropolitan area networks. However, the link schedule and the relevant resource allocation, which is a key challenging issue in such networks, has not been specified in the standard. In this regarding, we propose an efficient link schedule scheme to improve the link traffic scheduling efficiency and resource utilization as well. Specifically we first propose a novel mechanism to exploit the optimal link transmission capacity. Then we design an effective traffic schedule scheme to fully utilize the link transmission bandwidth with respect to user's requirements. Moreover we also propose a spatial reuse scheme to further enhance the link scheduling efficiency and the resource utility efficiency and well. Experiment results validate the efficiency and efficacy of the proposed link schedule schemes.

High Efficient Link Schedule with Spatial Reuse in Relay Enabled Broadband Wireless Networks