Asynchronous power management scheme for wireless ad-hoc networks

In wireless ad-hoc networks, power-saving of the terminals is very important issue since they operate depending on limited battery-power. To reduce the power consumption of the terminals, the terminals are allowed to enter into the Low-Power Mode(LPM) in many wireless networks. However, owing to no clock synchronization of information transmission in ad-hoc networks, it occurs the problem that the terminals don ' t know when the neighbor terminal in the LPM becomes awake. In our paper, we proposed the novel power management scheme using the SLEEP-TABLE to solve this problem. The simulation results show that the proposed scheme outperforms 802.11 LPM and the conventional scheme in terms of power saving, and the power consumption of each terminal is distributed.