Connection admission control for a WDM optical network based on traffic monitoring and bandwidth release

Authors:
Helvécio M. Almeida;Eduardo M. G. de Queiroz;Amílcar C. César
Affiliations:
University of São Paulo, EESC, São Carlos, SP, Brazil;University of São Paulo, EESC, São Carlos, SP, Brazil;University of São Paulo, EESC, São Carlos, SP, Brazil
Venue:
IEEE Communications Letters
Year:
2010

Citing 1
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Computer Networks: The International Journal of Computer and Telecommunications Networking

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Abstract

We proposed a connection admission control (CAC) to monitor the traffic in a multi-rate WDM optical network. The CAC searches for the shortest path connecting source and destination nodes, assigns wavelengths with enough bandwidth to serve the requests, supervises the traffic in the most required nodes, and if needed activates a reserved wavelength to release bandwidth according to traffic demand. We used a scale-free network topology, which includes highly connected nodes (hubs), to enhance the monitoring procedure. Numerical results obtained from computational simulations show improved network performance evaluated in terms of blocking probability.