Performance of Adaptive Routing in Wavelength-Routed Networks with Wavelength Conversion Capability

Performance of Adaptive Routing in Wavelength-Routed Networks with Wavelength Conversion Capability This paper concerns itself with the performance of adaptive routing in wavelength-routed networks with wavelength conversion capability. Exploiting the concept of load balancing, we propose an adaptive weighted-shortest-cost-path (WSCP) routing strategy. The salient feature of WSCP is that it seeks the path that minimizes the resource cost while simultaneously maintaining the traffic load among the links as balanced as possible. In our simulation, we compare the blocking probability, average hops and link utilization of WSCP with traditional shortest-cost-path (SCP) strategy, fixed routing and alternate routing. The numerical results show that WSCP can enhance blocking performance and just lengthen hop distances a little longer. The improvement is more significant in denser networks or with more wavelengths. We also develop an analytical model to estimate blocking performance of WSCP and compare analyses with simulations. Because of the benefit from load balancing, the proposed WSCP strategy can be used as a path selection algorithm in traffic engineering. Photonic Network Communications Springer Journals

Performance of Adaptive Routing in Wavelength-Routed Networks with Wavelength Conversion Capability

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Kluwer Academic Publishers
Copyright © 2003 by Kluwer Academic Publishers
Computer Science; Computer Communication Networks; Electrical Engineering; Characterization and Evaluation of Materials
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  • Models of blocking probability in all-optical networks with and without wavelength changers
    Barry, R. A.; Humblet, P. A.
  • Wavelength conversion in WDM networking
    Ramamurthy, B.; Mukherjee, B.

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