Cumulative-TIM Method for the Sleep Mode in IEEE 802.16e Wireless MAN
The IEEE 802.16e WMAN (Wireless Metropolitan Area Networks), which has been designed for fixed or mobile broadband wireless access, is getting into the spotlight as the base technology for the mobile Internet. As most mobile stations are battery-powered in wireless environment, energy efficient protocols are essential for their practical use. Although many systems, including the IEEE 802.16e, adopt the sleep mode, little attention has been paid to the traffic characteristics or status of the mobile station. In this paper, we propose a new scheme called Cumulative-TIM, in which BS(base station) does not wake up a mobile station until a sufficient amount of data for the station is stored, thus guaranteeing mobile stations sleep enough amount of time. In this way, mobile stations can use their energy more efficiently than the standard sleep mode: Our simulation result shows that proposed scheme has a better performance compare with the current standard of the WMAN.
KeywordsMobile Station Sleep Mode Broadband Wireless Access Message Sequence Chart Sleep Interval
Unable to display preview. Download preview PDF.
- 1.IEEE 802.16e/D5-2004, Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems - Amendment for Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands (November 2004)Google Scholar
- 2.IEEE 802.16-2001, IEEE Standard for Local Metropolitan Area Networks - Part 16: Air Interface for Fixed Broadband Wireless Access Systems, April 8 (2002)Google Scholar
- 3.Eklund, C., Marks, R., Stanwood, K., Wang, S.: IEEE Standard 802.16: A Technical Overview of the WirelessMAN Air Interface for Broadband Wireless Access. IEEE Communication Magazine (June 2002)Google Scholar
- 4.Ramachadran, S., Bostian, C., Midkiff, S.: Performance Evaluation of IEEE 802.16 for Broadband Wireless Access. Technical document (2002)Google Scholar
- 5.Seo, J., Lee, S., Park, N., Lee, H., Cho, C.: Performance Analysis of Sleep Mode Operation in IEEE 802.16e. In: IEEE Vehicular Technology Conference (September 2004)Google Scholar
- 6.Xiao, Y.: Energy Saving Mechanism in the IEEE 802.16e Wireless MAN. IEEE Communication Letters (July 2005)Google Scholar
- 7.Managhanram, R., Demirhan, M.: Performance and simulation analysis of 802.15.3 QoS. IEEE 802.15-02/293 contribution (2002)Google Scholar
- 8.The CMU Monarch Project, Wireless and mobile extension to ns Snapshot Release 1.1.1., Carnegie Mellon University (1999)Google Scholar
- 9.Fall, K., Varadhan, K.: The ns Manual. UC Berkeley (2001)Google Scholar