Title: DLB: a novel real-time QoS control mechanism for multimedia transmission

Authors: Jian Li, Ye-Qiong Song

Addresses: Shanghai Jiao Tong University, 800 Dongchuan Road, 200240 Shanghai, China. ' LORIA-INPL, Campus Scientifique – BP 239, 54506 Vandoeuvre-les-Nancy Cedex, France

Abstract: This paper presents a new real-time Quality of Service (QoS) scheme, called Relaxed (m, k)-firm, for multimedia flow transmission which can tolerate occasional packet drops. In contrast to traditional real-time constraint, Relaxed (m, k)-firm requires the transmission delay constraint on a group of any k consecutive packets instead of imposing a transmission delay constraint per packet. Due to this relaxation, this novel scheme can achieve high resource utilisation. A new traffic control mechanism, called Double-Leaks Bucket (DLB), is also proposed to selectively drop a proportion of packets in case of network congestion while still guaranteeing the R-(m, k)-firm constraint.

Keywords: real-time transmission; QoS; quality of service; queue management; multimedia transmission; packet drops.

DOI: 10.1504/IJHPCN.2009.026287

International Journal of High Performance Computing and Networking, 2009 Vol.6 No.1, pp.4 - 14

Published online: 05 Jun 2009 *

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