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In this paper, the authors propose a new power-saving scheme by introducing the pair-wise matching procedure between the Subscriber Stations (SSs) prior to the uplink data transmission in the WiMax mesh mode. According to the Quality-of-Service (QoS) requirement, they can preset the desired Packet Error Rate (PER) or Signal-to-Interference-plus-Noise-Ratio (SINR) at the receiver end. Given the network topology and the channel state information, the required transmitting power per coded bit at each SS can be calculated. Then they may establish a cost function associated with the required transmitting power per coded bit and thus the optimal matching can be achieved by their proposed minimum weight matching algorithm.
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