Paper Info
Title
An efficient preemption-based channel scheduling algorithm for service differentiation in OBS networks
Abstract
Optical burst switching (OBS) is a promising switching technology for realization of an economical optical Internet. Quality-of-service (QoS) support is an important challenging issue of OBS networks, and a number of schemes have been proposed. However, the existing schemes have some limitations, such as QoS performance degradation, low wavelength utilization, and high implemental complexity. This paper proposes a bufferless preemption-based channel scheduling algorithm for service differentiation in OBS networks, which combines a preemption channel selection algorithm and a channel partitioning algorithm. The proposed preemption channel selection algorithm minimizes the length of preempted bursts to improve channel efficiency, and the channel partitioning algorithm controls the degree of service differentiation between service classes with low implemental complexity. An analytical model is derived and simulations are conducted to evaluate the performance. The results showed that the proposed scheme can improve channel efficiency and effectively provide controllable service differentiation for multi-class traffic in terms of the burst blocking probability and end-to-end throughput.
Year
DOI
Venue
2006
10.1016/j.comcom.2006.02.019
Computer Communications
Keywords
Field
DocType
Optical burst switching,Preemption-based service differentiation,Channel scheduling
Preemption,Optical burst switching,Service quality,Computer science,Scheduling (computing),Selection algorithm,Algorithm,Communication channel,Quality of service,Computer network,Real-time computing,Throughput
Journal
Volume
Issue
ISSN
29
12
Computer Communications
Citations 
PageRank 
References 
2
0.40
10
Authors
4
Name
Order
Citations
PageRank
Byung-Chul Kim18113.59
Sung-Hyup Lee2215.09
Young-Soo Choi3236.84
You-Ze Cho417630.46