Handover-specific optimization for IEEE 802.16e sleep mode

Authors:
Jaesung Park;Beomjoon Kim;Iksoon Hwang
Affiliations:
Department of Internet Information Engineering, The University of Suwon, Korea;Department of Electronic Engineering, Keimyung University, Daegu, Korea;System Software Department, LG-Nortel R&D Center, Korea
Venue:
MMM'07 Proceedings of the 13th International conference on Multimedia Modeling - Volume Part II
Year:
2007

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Abstract

IEEE 802.16e standard specifies sleep mode to achieve low power consumption of a mobile station (MS). Since sleep mode is defined only for the current serving base station (BS), a sleeping MS in motion performs handover even if it has no active connection. Accordingly, the power saving efficiency of sleep mode may be severely degraded in a mobile environment. In order to cover the problem, the IEEE 802.16e standard specifies a method that optimizes the sleep mode initiation process specific to handover. With the optimization, a MS that has been in sleep mode and currently performs handover is able to resume sleep mode as soon as it completes the handover process with no additional request. This paper justifies the use of the optimization by showing the simulation results that evaluate the performance gain obtained from the optimization.