An integrated power saving scheduling algorithm in 802.16e wireless metropolitan area networks

Abstract

In IEEE 802.16e, with the popularization of multimedia services, multicast and unicast services are coexisted in one mobile subscriber station (MSS). The mobile devices are generally powered by energy-limited battery. Thus, the power saving is the important issue of extending the lifetime of MSSs. In this paper we have proposed a Multicast Services Based Scheduling (MSBS) algorithm that improves energy efficiency for both unicast and multicast services, and conforms QoS requirements of MSSs in IEEE 802.16e wireless networks. MSBS schedules packets based on a deadline for each packet determined from QoS parameters and reduces energy consumption of MSSs by minimizing the switching energy. Simulation results show that, MSBS can reduce significant overall energy and prolong lifetime of the MSSs.

Energy-Efficient Multicasting of Scalable Video Streams Over WiMAX Networks

“…2) Energy Efficient Scheduling: Power-aware scheduling schemes for general WiMAX networks have been proposed in [12]- [15]. For example, Seo et al [12] propose a scheme that utilizes subscriber information available at the base station.…”

“…Liao and Lee [15] suggest a scheduling scheme where the unicast data are clustered around the multicast data bursts for increased energy efficiency. They assume that the burst length and positions for a particular stream is the same in all super-frames.…”