Delay and data rate decoupled fair queueing for multimedia services in wireless networks

Authors:
Suwon Lee;Kiseon Kim;Aftab Ahmad
Affiliations:
Multimedia Communication System Laboratory, Department of Information and Communications, Kwang-Ju Institute of Science and Technology (K-JIST), 1 Oryong Dong, Puk Gu, Kwang-ju 500-712, South Kore ...;Multimedia Communication System Laboratory, Department of Information and Communications, Kwang-Ju Institute of Science and Technology (K-JIST), 1 Oryong Dong, Puk Gu, Kwang-ju 500-712, South Kore ...;School of Computer Science, Telecommunications and Information Systems, DePaul University, 243 South Wabash Ave., Chicago IL, USA
Venue:
Computer Communications
Year:
2003

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Abstract

This paper proposes a delay and data rate decoupled fair queueing scheme for wire-less multimedia, where two separate scheduling algorithms are applied respectively for real time and non-real time flows. For real time flows, we propose an explicit-delay-guarantee algorithm to guarantee the delay deadline, while a conventional fair queuing algorithm is adopted for non-real time flows to guarantee fairness and throughput requirements. In erroneous wireless channel, resource swapping is further adopted to guarantee the required quality of service. In addition, a real time flow can easily react to varying channel error condition by controlling the trans-mission order using allocation window and accelerating factor without degrading the performance of other real time flows. Through simulations, it is shown that the proposed scheme provides not only improved performance in terms of delay but also simplified control operation in dynamic channel error condition.