The Community for Technology Leaders
2009 Sixth International Conference on Broadband Communications, Networks, and Systems. Broadnets 2009 (2009)
Madrid
Sept. 14, 2009 to Sept. 16, 2009
ISSN: 2150-4903
ISBN: 978-963-9799-49-3
pp: 1-8
Lalit Kumar Pagaria , Department of Computer Science and Engineering, Indian Institute of Technology Madras, Chennai 600036, India
T. Venkatesh , Department of Computer Science and Engineering, Indian Institute of Technology Guwahati, 781039, India
C. Siva Ram Murthy , Department of Computer Science and Engineering, Indian Institute of Technology Madras, Chennai 600036, India
ABSTRACT
Optical burst switching (OBS) is widely believed to be the technology for the future core network in the Internet. Traditionally, the burst header packet (BHP) is served by the control processor on first-come-first-serve basis which increases the burst loss probability (BLP) at the core nodes closer to the destination due to insufficient offset time. Efficient real-time service disciplines in the control plane can reduce the BLP due to insufficient offset time by giving higher priority to the BHPs with smaller residual offset time. This in turn improves the throughput of OBS networks and reduces the BLP. This paper studies the role of real-time service disciplines used to service the BHPs in the queue in improving the performance of the OBS networks. We propose Least per-Hop Worst-Case Laxity First (LHWLF) algorithm which picks the BHP with least available delay budget at that node after accounting for the waiting time in the queue. We demonstrate the effectiveness of our LHWLF algorithm by comparing with other competing ones in the literature in terms of BLP and throughput. We also demonstrate that the proposed algorithm gives fair treatment to bursts with different lengths and the bursts travelling paths of different lengths.
INDEX TERMS
optical burst switching, optical fibre networks, probability
CITATION

L. K. Pagaria, T. Venkatesh and C. S. Murthy, "An efficient real-time service discipline for the control plane to enhance the performance of optical burst switching networks," 2009 Sixth International Conference on Broadband Communications, Networks, and Systems. Broadnets 2009(BROADNETS), Madrid, 2009, pp. 1-8.
doi:10.4108/ICST.BROADNETS2009.7821
96 ms
(Ver 3.3 (11022016))