The Optimal Power Saving Mode of IEEE 802.11 Based on Contention Constraint

doi:10.13190/jbupt.200802.113.sipb

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (2): 113-117.doi: 10.13190/jbupt.200802.113.sipb

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The Optimal Power Saving Mode of IEEE 802.11 Based on Contention Constraint

SI Peng-bo, JI Hong, YUE Guang-xin

Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China）

Received:2007-08-07 Revised:1900-01-01 Online:2008-04-28 Published:2008-04-28
Contact: SI Peng-bo

Abstract

Abstract:

In the IEEE 802.11 distributed coordination function based wireless local area network (WLAN), a new downlink access scheme optimal power saving mode (OPSM) is proposed to solve the problem of over contention after beacon transmissions. To maximize the number of stations which contend the channel successfully, OPSM configures the traffic indication map (TIM) fields in beacon frames to constrain collisions. The downlink priority differentiation degree α is defined to describe the quality of service (QoS) gap between different services. Furthermore, the power consumption models of downlink constant bit rate service with standard 802.11 PSM and OPSM are built. Analysis and simulation results validate the performance improvement and the priority differentiation by configuring α.

Key words: IEEE 802.11, media access control, power saving mode, downlink priority differentiation degree

CLC Number:

TN911.22

SI Peng-bo, JI Hong, YUE Guang-xin. The Optimal Power Saving Mode of IEEE 802.11 Based on Contention Constraint[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2008, 31(2): 113-117.

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The Optimal Power Saving Mode of IEEE 802.11 Based on Contention Constraint

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