By Topic

Service differentiation with the adjustment of remaining backoff time in IEEE 802.11 Wireless LAN

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Ki-tae Hong ; Grad. Sch. of Inf. & Commun., Ajou Univ., Suwon ; Byeong-hee Roh

In traditional IEEE 802.11 Wireless LAN, since no traffic differentiation is provided, QoS control for real-time services can not be supported. In this paper, we propose a method to provide service differentiation in legacy IEEE 802.11 Wireless LAN, which uses Distribute Coordination Function (DCF) mode. For the low priority traffic, remaining backoff time is reset according to its pre-determined probability. The probability is given according to the application's category, e.g. real-time video/voice or best effort data. When it is needed to reset the remaining backoff time for low priority traffic, the terminal should recalculate the backoff time between the previous remaining time and the maximum contention window size. The recalculated backoff time tends to increase compared to the previous remaining backoff time. Accordingly, the whole backoff time for low traffic tends to increase. For the use of the proposed scheme, only simple modification at terminal, not at AP (Access Point), is required. So, it can be easily applied to normal IEEE 802.11 Wireless LAN environments.

Published in:

Advanced Communication Technology, 2009. ICACT 2009. 11th International Conference on  (Volume:03 )

Date of Conference:

15-18 Feb. 2009