An Admission Control Mechanism to guarantee QoS of Streaming Service in WLAN 


Vol. 34,  No. 6, pp. 595-604, Jun.  2009


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  Abstract

The HCCA reserves the channel resources based on the mean data rate in IEEE 802.11e. It may cause either the waste of channel resource or the increase of transmission delay at MAC layer if the frame size is rapidly varied when a compressed mode video codec such as MPEG video is used. To solve these problems, it is developed that the packet scheduler allocates the wireless resource adaptation by according to the packet size. However, it is difficult to perform the admission control because of the difficulty with calculating the available resources. In this paper, we propose a CAC mechanism to solve the problem that may not satisfy the QoS by increasing traffic load in case of using EDCA. Especially, the proposed CAC mechanism calculates the EB of TSs using the traffic information transmitted by the application layer and the number of average transmission according to the wireless channel environment, and then determines the admission of the TS based on the EB. According to the simulation results of the proposed CAC mechanism, it admitted the TSs under the loads which are satisfied within the delay bound. Therefore, the proposed mechanism guarantees QoS of streaming services effectively.

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  Cite this article

[IEEE Style]

S. Kang, H. Lee, K. Lee, J. Kim, B. Roh, "An Admission Control Mechanism to guarantee QoS of Streaming Service in WLAN," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 6, pp. 595-604, 2009. DOI: .

[ACM Style]

Seok-Won Kang, Hyun-Jin Lee, Kyu-Hwan Lee, Jae-Hyun Kim, and Byeong-Hee Roh. 2009. An Admission Control Mechanism to guarantee QoS of Streaming Service in WLAN. The Journal of Korean Institute of Communications and Information Sciences, 34, 6, (2009), 595-604. DOI: .

[KICS Style]

Seok-Won Kang, Hyun-Jin Lee, Kyu-Hwan Lee, Jae-Hyun Kim, Byeong-Hee Roh, "An Admission Control Mechanism to guarantee QoS of Streaming Service in WLAN," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 6, pp. 595-604, 6. 2009.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880