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A Policy on WLAN MAC Parameters Usage for QoS Provisioning  

Jeong, Dae-In (한국외국어대학교 전자정보공학부)
Hong, Chang-Hyun ((주)씨에스티)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.11B, 2005 , pp. 698-706 More about this Journal
Abstract
In this paper, we investigate the parameters of the IEEE 802.11e MAC protocol, CWmin and AIFS, in terms of their capability of QoS control. The delay and the bandwidth performances are selected as the QoS medics to examine the characteristics of those parameters. A policy on MAC parameters usage, thereby, is proposed. We regard the MAC-level traffic classification as the differentiation in the channel accessibility, and thus the delay differentiation is referred to a main issue of the class-level QoS control. Realizing the tight relationship between the delay performance and the parameter AIFS, we derive an analytical expression of their relationship through an analysis of the MAC mechanism. Various simulations are examined which show the validity of our assertions, and a policy on the parameters usage is proposed based on those observations.
Keywords
WLAN; MAC; QoS; parameter tuning;
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