Enhanced power efficient sleep mode operation for IEEE 802.16e based WiMAX

Shengqing Zhu, Tianlei Wang
2007 2007 IEEE Mobile WiMAX Symposium  
To support battery powered mobile broadband wireless access devices efficiently, IEEE 802.16e defines a sleep mode operation for conserving the power of mobile terminals. In this paper we analyze the power consumption and the mean delay of IEEE 802.16e sleep mode operation with a theoretical Markov chain model. The analytical results show that there is a tradeoff between the power consumption and the mean delay, and the key of the tradeoff is the initial sleep window. Then, we present a
more » ... e present a heuristic algorithm to tune the initial sleep window dynamically according to the traffic load. Extensive simulation results show that the proposed algorithm can improve the power consumption up to 30% compared to the IEEE 802.16e standard. The price is just little increase of the mean delay. Therefore, the proposed algorithm provides a proper tradeoff between the power consumption and the mean delay.
doi:10.1109/wimax.2007.348699 fatcat:fbcz56ge4jaotdgj2pbsm6xra4