An M/G/1 queue with bulk service model for power management in wireless LANs
Hongyan Lei, Arne A. Nilsson · 2005
Energy efficiency is an important issue in wireless networks. We investigate the power management scheme in the IEEE 802.11 based infrastructure WLANs (wireless local area network) in order to find the optimal parameters that can achieve good energy efficiency without degrading other performances. With power management, an AP (Access Point) might temporarily buffer packets whose destination stations are in the Doze state. We focus our study on the behavior of the buffered packets and their impacts on the performance metrics. We model the power management scheme as an M/G/1 queue with bulk service and obtain the analytical results for the energy efficiency and the response time performance metrics, which are controlled by the listen interval. Our simulation results are in good agreement with the analysis. Based on the analytical model and simulation, we propose to select the largest listen interval with the satisfaction of the response time requirement.