Time aware path computation
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United States of America Patent
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Nov 12, 2019
Grant Date -
Jan 18, 2018
app pub date -
Feb 3, 2015
filing date -
Feb 3, 2015
priority date (Note) -
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Abstract
A path computation method involves receiving (200) a request for computation of a new path in the network, the request indicating a future time interval when the path is desired. Subsequently a future network status is generated (210, 212, 214), having a representation of availability of path resources at the future time interval, based on selected paths already reserved at that future time interval. Then there is a step of computing (220) which of the path resources to select for the new path according to the future network status. By generating this future network status when the future time interval is known, it can be generated in respect of a limited time interval rather than covering all possible future reservable times. Thus the benefits of time aware path computation can be achieved without the need for maintaining a huge database of availability at all future times, of all the path resources.
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