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Analysis of Delay Performance for QoS Support in Wireless Networks  

Kim Jenog Geun (경희대학교 전자정보대학 전파공학전공)
Cho Jin Sung (경희대학교 전자정보대학 컴퓨터공학 전공)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.10B, 2004 , pp. 831-840 More about this Journal
Abstract
Providing quality of service (QoS) guarantees over wireless link requires thorough understanding and quantification of the interactions among the traffic source, the wireless channel, and the underlying error control mechanisms. In this paper, we account for such interactions in a network-layer model that we use to investigate the delay performance of a wireless channel. We consider a single ON/OFF traffic stream transported over a wireless link. The capacity of this link fluctuates according to a fluid version of Gilbert-Elliot's model. We derive the packet delay distribution via two different approaches: uniformization and Laplace transform. Numerical aspects of both approaches are compared. The delay distribution is further used to quantify the wireless effective bandwidth under a given delay guarantee. Numerical results and simulations are used to verify the adequacy of our analysis and to study the impact of error control and bandwidth allocation on the packet delay performance. Wireless networks, QoS, delay distribution, fluid analysis.
Keywords
Wireless networks; QoS; delay distribution; fluid analysis;
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