Improving Fairness With Novel Adaptive Routing in Optical Burst-Switched Networks

    Authors

    X. B. Gao;M. A. Bassiouni

    Comments

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    Abbreviated Journal Title

    J. Lightwave Technol.

    Keywords

    Adaptive routing; fairness; optical burst switching (OBS); wavelength; division multiplexing; WDM NETWORKS; PERFORMANCE; Engineering, Electrical & Electronic; Optics; Telecommunications

    Abstract

    In most existing studies of optical burst-switched networks, adaptive routing is based on deflection routing and/or feedback from the past intervals which often introduces excessive transmission delay and architectural complexity. Our proposed novel adaptive routing schemes, however, consider the transient link congestion at the moment when the bursts arrive and have potential to reduce the overall burst loss probability. Moreover, they can utilize the same offset times for the same node pairs implying zero additional transmission delay and simplicity. The proposed hop-by-hop routing schemes also aim to address the intrinsic unfairness defect of existing popular signaling protocols by increasing the effective link utilization. The results show that the proposed schemes generally outperform shortest path routing and depending on the routing strategy involved, the network topology and the traffic load, this improvement can be substantial. We develop analytical loss models to demonstrate the need for such an adaptive routing scheme at each hop and show its effectiveness. We also verify the analytical results by simulation.

    Journal Title

    Journal of Lightwave Technology

    Volume

    27

    Issue/Number

    20

    Publication Date

    1-1-2009

    Document Type

    Article

    Language

    English

    First Page

    4480

    Last Page

    4492

    WOS Identifier

    WOS:000269394600011

    ISSN

    0733-8724

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