Abstract: The research on the power control strategy in Wireless LAN is a very important issue in the wireless communication field. In this paper, a Perfect Scheduling Power Control strategy PS_PC is presented for decreasing the power consumption of equipments in WLAN, and it schedules the traffics buffered in Access Point (AP) according to their arrival time, so that the QoS guarantee can be provided and the consumed system resources by collision or backoff procedure are decreased. The theoretical analysis and simulation results show that the PS_PC is an effective power saving method.

Key words: Wireless LAN, power control, perfect scheduling, QoS guarantee