Feedback-Assisted Multipolling Scheme for Real-Time Multimedia Traffics in Wireless LANs 


Vol. 31,  No. 6, pp. 495-507, Jun.  2006


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  Abstract

In wireless local area networks (WLANs), the successful design of scheduling algorithm is a key factor in guaranteeing the various quality of service (QoS) requirements for the stringent real-time constraints of multimedia services. In this paper we propose a multipolling-based dynamic scheduling algorithm for providing delay guarantees to multimedia traffics such as MPEG streams. The dynamic algorithm exploits the characteristics of MPEG stream, and uses mini frames for feedback control in order to deliver dynamic parameters for channel requests from stations to the point coordinator (PC) operating at the access point (AP). In this scheme, the duration of channel time allocated to a station during a superframe is changed dynamically depending on the MPEG frame type, traffic load and delay bound of the frame, etc. Performance of the proposed scheme is investigated by simulation. Our results show that compared to conventional scheme, the proposed scheme is very effective and has high performance while guaranteeing the delay bound.

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  Cite this article

[IEEE Style]

S. Kim and Y. Cho, "Feedback-Assisted Multipolling Scheme for Real-Time Multimedia Traffics in Wireless LANs," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 6, pp. 495-507, 2006. DOI: .

[ACM Style]

Sun-Myeng Kim and Young-Jong Cho. 2006. Feedback-Assisted Multipolling Scheme for Real-Time Multimedia Traffics in Wireless LANs. The Journal of Korean Institute of Communications and Information Sciences, 31, 6, (2006), 495-507. DOI: .

[KICS Style]

Sun-Myeng Kim and Young-Jong Cho, "Feedback-Assisted Multipolling Scheme for Real-Time Multimedia Traffics in Wireless LANs," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 6, pp. 495-507, 6. 2006.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880