METHOD AND A NETWORK NODE FOR IMPROVING BANDWIDTH EFFICIENCY IN AN OPTICAL NETWORK
First Claim
1. A method for improving bandwidth efficiency in an optical network by dynamically utilizing unused bandwidth located around preliminarily allocated optical channels, by monitoring actual bandwidth of the preliminarily allocated optical channels incoming to a node of the optical network, reporting the monitoring results to a node controller of said node and further to a network controller, receiving at said node recommendations generated by the network controller, adjusting bandwidth of one or more of the allocated optical channels thereby releasing spare bandwidth spacing for inserting one or more additional optical channels thereat.
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Accused Products
Abstract
A method and system are provided for improving bandwidth efficiency in an optical network by dynamically utilizing unused bandwidth located around preliminarily allocated optical channels. The method comprising monitoring actual bandwidth of the preliminarily allocated optical channels incoming to a node of the optical network, reporting the monitoring results to the controller of that node and further to a network controller, receiving at that node recommendations generated by the network controller, adjusting bandwidth of one or more of the allocated optical channels thereby releasing spare bandwidth for inserting one or more additional optical channels thereat.
28 Citations
14 Claims
- 1. A method for improving bandwidth efficiency in an optical network by dynamically utilizing unused bandwidth located around preliminarily allocated optical channels, by monitoring actual bandwidth of the preliminarily allocated optical channels incoming to a node of the optical network, reporting the monitoring results to a node controller of said node and further to a network controller, receiving at said node recommendations generated by the network controller, adjusting bandwidth of one or more of the allocated optical channels thereby releasing spare bandwidth spacing for inserting one or more additional optical channels thereat.
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10. An optical switching network node comprising:
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a node traffic controller NTC in communication with a Network Controller NC; one or more blocks for monitoring optical channels incoming the node from at least two sources having different grids of optical channels, and for informing the NC about bandwidth occupancy of said grids; one or more suitable bandwidth adjustment blocks, wherein each of said bandwidth adjustment blocks; serving a group of incoming optical channels characterized by a specific grid; being adapted to obtain recommendations from the Network Controller NC and, based on the received recommendations, to shape and/or narrow bandwidth of one or more incoming optical channels of the group so as to prepare space for inserting there-between optical channels arriving from another source and characterized by another grid. - View Dependent Claims (11, 12, 13, 14)
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Specification