An Improvement of Throughput Measurement Minimization Method for Access-Point Transmission Power Minimization in Wireless Local-Area Network

For reducing the energy consumption of wireless local-area network (WLAN), we have studied the transmission power minimization of the access-points (AP). A throughput estimation model is adopted to estimate the minimum power satisfying the required performance after tuning the parameters by throughput measurement results with different powers in the network field. Then, the measurement minimization is essential to reduce labor costs in this approach. Thus, we proposed a method of minimizing host locations for measurements while maintaining the model accuracy. In this study, we present an improvement of this method by limiting measurements at two nearest locations from the AP. The experimental results for IEEE802.11n WLAN show that the number of measurements is reduced by 60% while keeping the throughput estimation error.