Energy Efficient Power Management for Multi-Mode Wireless Network Devices

In this paper, we analyze the network status of multi-mode wireless network devices with two different network communication modules using the Markov process. Power management is very important in wireless network devices with multiple network communication modules. We analyze the energy consumption rate of network devices according to the variation of network detection interval. We derive the optimal network detection interval by using the probabilistic analysis according to the state transition rate of networks and the energy consumption rate of network modules. We propose a heuristic network detection scheme that dynamically adjusts the network detection interval. We evaluated our scheme via simulation. The simulation results show that the energy consumption of our scheme is almost the same as that consumed in the optimal case under certain conditions.