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Dynamic Channel Time Allocation Scheme for Multimedia Traffic with Delay Bound in High-Rate Wireless PANs  

Kim Sun-Myeng (Department of Information and Communication, Ajou University)
Cho Young-Jong (Department of Information and Communication, Ajou University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.42, no.11, 2005 , pp. 1-12 More about this Journal
Abstract
In wireless personal area networks(PANs), the successful design of channel time allocation 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 dynamic channel time allocation algerian for providing delay guarantees to multimedia traffics such as MPEG streams in the IEEE 802.15.3 high-rate WPANs. The dynamic algorithm exploits the characteristics of MPEG stream, wherein the devices (DEVs) send their channel time requests only at the end of superframe boundaries. The algerian uses mini packets for feedback control in order to deliver dynamic parameters for channel time requests from the DEVs to the piconet coordinator (PNC). In this scheme, the duration of channel time allocated to a DEV 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 traditional scheme, the proposed scheme is very effective and has high performance while guaranteeing the delay bound.
Keywords
Channel Time Allocation; Home Network; Multimedia Traffic; Scheduling Algorithm; WPAN;
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