Patent ID: 6850705
Filing Date: 2005-02-01
Classification: H04B,H04J

Abstract:
1. A method for determining a protection path for a failure event link in an optical network of a set of nodes interconnected a set of links, the method comprising: receiving a set of link metrics corresponding to wavelength reservations for a set of protected links on a set of protection path links; calculating a set of widths using the set of ink metrics, each width corresponding to a capacity of a protection path link to protect the failure event link, wherein a width of a protection path link is a normalized difference between a maximum wavelength reservation on the protection path link and a wavelength reservation on the protection path link for the failure event link; calculating a protection path including protection path links for the failure event link using the set of widths; determining a set of possible protection paths; determining a protection path maximum width for the set of possible protection paths; and selecting a protection path from the set of possible protection paths using the protection path maximum with.