Uniform versus non-uniform band switching in WDM networks

Authors:
Li-Wei Chen;Poompat Saengudomlert;Eytan Modiano
Affiliations:
Laboratory for Information and Decision Systems, Massachusetts Institute of Technology, Cambridge, MA;Laboratory for Information and Decision Systems, Massachusetts Institute of Technology, Cambridge, MA;Laboratory for Information and Decision Systems, Massachusetts Institute of Technology, Cambridge, MA
Venue:
Computer Networks: The International Journal of Computer and Telecommunications Networking - Optical networks
Year:
2006

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Abstract

We compare the effectiveness of uniform versus non-uniform waveband switching under the dual cost metrics of switching requirements and fiber capacity. We consider a star topology and begin by characterizing the optimal performance frontier achievable under no restrictions on waveband sizing, and provide algorithms employing non-uniform waveband sizing that approach or achieve this optimum. We then consider the special case of uniform waveband sizing, and show that the performance compares very favorably. We also extend our results to general topologies.