ADAPTIVE POWER MANAGEMENT FOR IEEE 802.11-BASED AD HOC NETWORKS

摘要

Mobile stations are powered by batteries which have a limited lifetime. Therefore, it is important to reduce the power consumption. In IEEE 802.11 power saving mode, a station can enter a doze state so that it can save its energy. However, a station must be either in awake state or doze state during a beacon interval and a station unnecessarily consumes more energy or suffers from longer delay in forwarding data frames. We proposes an adaptive scheme which adjusts the number of awake times during one beacon interval to reduce power consumption and forwarding delay. Simulation study show that the proposed scheme reduces energy consumption by 30～50% compared to the standard power management method, with comparable throughput and delay.