Packet Scheduling Scheme to Enhance Throughput at IEEE 802.11e WLAN System 


Vol. 31,  No. 4, pp. 412-420, Apr.  2006


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  Abstract

With the appearance of various types of traffic services in communication networks, a study on QoS(Quality of Service) packet scheduling mechanisms which can support differentiated service to each traffic service becomes very important. To meet this requirement, IEEE 802.11 Working Group established the IEEE 802.11e MAC protocol which categorizes every traffic services into 4 access categories(AC) and provides the differentiated service to each AC. In addition, the physical layer of IEEE 802.11a/g standards provide up to 54 Mbps transmission rate per one wireless LAN terminal. However, since the radio resource is hardly limited in wireless channel, it is necessary to find an efficient packet scheduling scheme to maximize the transmission efficiency. Therefore, in this paper, we proposed a new packet scheduling scheme that can enhance the total throughput by setting different contention windows(CW) of CSMA-CA channel access scheme to each wireless LAN terminal according its current channel states. Numerical results derived from using NS-2 network simulator have shown that our proposed packet scheduling scheme can enhance the performance of IEEE 802.11e more and more.

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  Cite this article

[IEEE Style]

J. Jang and H. Jeon, "Packet Scheduling Scheme to Enhance Throughput at IEEE 802.11e WLAN System," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 4, pp. 412-420, 2006. DOI: .

[ACM Style]

Jaeshin Jang and Hyung-ik Jeon. 2006. Packet Scheduling Scheme to Enhance Throughput at IEEE 802.11e WLAN System. The Journal of Korean Institute of Communications and Information Sciences, 31, 4, (2006), 412-420. DOI: .

[KICS Style]

Jaeshin Jang and Hyung-ik Jeon, "Packet Scheduling Scheme to Enhance Throughput at IEEE 802.11e WLAN System," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 4, pp. 412-420, 4. 2006.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880