Multiple redundancy schemes in an optical network
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United States of America Patent
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Apr 13, 2010
Grant Date -
Feb 5, 2009
app pub date -
Feb 17, 2004
filing date -
Feb 17, 2004
priority date (Note) -
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Abstract
Methods and apparatuses for multiple redundancy schemes in an optical network are described herein. In one embodiment, an exemplary method includes receiving a demand for allocating a first protection path that meets a first set of disjointness constraints with respect to a first working path according to a first protection scheme having a first priority, in response to the demand, locating a second protection path that meets a second set of disjointness constraints with respect to a second working path according to a second protection scheme having a second priority, and assigning the second protection path as a protection path to the first working path if the first priority of the first protection scheme is higher than the second priority of the second protection scheme. Other methods and apparatuses are also described.
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