Power-saving scheduling with a QoS guarantee in a mobile WiMAX system

Authors:
Wen-Hwa Liao;Wen-Ming Yen
Affiliations:
Department of Information Management, Tatung University, No. 40, Sec. 3, Chungshan N. Rd., Taipei 104, Taiwan;Department of Information Management, Tatung University, No. 40, Sec. 3, Chungshan N. Rd., Taipei 104, Taiwan
Venue:
Journal of Network and Computer Applications
Year:
2009

Citing 8
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Abstract

This paper presents a power-saving scheduling scheme to improve energy efficiency and guarantee Quality of Service (QoS) in Mobile Worldwide Interoperability for Microwave Access (WiMAX), i.e. IEEE 802.16e. Due to the popularization of multimedia services such as Voice over IP (VoIP) and MPEG video, different types of QoS coexist in one mobile subscriber station (MSS). Many previous studies have considered the QoS issue. Unfortunately, they only considered the delay in QoS. In this work, we consider that delay and jitter types of QoS should be scheduled at the same time and integrate the sleep duration in one MSS. The packets would be scheduled successively to reduce the number of status transitions under the QoS requirements of delay and jitter. The proposed approach not only minimizes power consumption of the MSS, but also guarantees both the delay and jitter QoS of real-time connections.