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Wireless mesh networks (WMNs) have attracted significant interest as a cost-effective wireless network infrastructure. However, the efficiency of wireless resource utilization decreases by radio interference when multiple transmissions in an interference region occur simultaneously. So decreasing radio interference is one of the major problems in wireless network.In the present paper, we propose a degree-based power control method of wireless mesh nodes to enhance spatial reuse in WMNs with TDMA MAC protocol. The proposed method is an attempt to reduce the radio interference and improve the spatial reuse of the WMN by decreasing the transmission power of mesh nodes, while maintaining the network connectivity at a certain level. Numerical evaluation results reveal that the proposed method decreases the frame length by up to 22%.