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Routing and Bandwidth Assignment for Flexible Grid Wavelength Switched Optical Networks

  • US 20140341572A1
  • Filed: 09/30/2011
  • Published: 11/20/2014
  • Est. Priority Date: 08/23/2011
  • Status: Active Grant
First Claim
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1. A method of routing and bandwidth assignment of new paths in a wavelength switched optical network, the network being arranged to carry paths of different bandwidths, occupying different numbers of adjacent frequency slots, the method having the steps of:

  • selecting a route for each of the new paths; and

    assigning a set of adjacent frequency slots to each respective new path,wherein for selected routes having more than one available set of sufficient adjacent frequency slots for their respective new paths, the assignment is made so as to place wider bandwidth ones of the new paths at an end of a spectrum of the available frequency slots, opposite to an end of the spectrum of the available frequency slots where narrower bandwidth ones of the new paths are placed.

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