Wavelength and spectrum assignment within packet-optical networks
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United States of America Patent
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Jul 7, 2015
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app pub date -
Dec 18, 2014
filing date -
Dec 18, 2014
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Abstract
Techniques are described for wavelength and spectrum assignment within a packet-optical transport system. A controller, for example, dynamically controls wavelength and spectrum assignment to suppress or generally avoid optical effects that can degrade communication performance. For example, the controller provides closed-loop control over dynamic partitioning of the spectral range of an optical transport system into channel groups and assignment of the groups to respective packet-optical transport devices based on current or future bandwidth requirements at each device. Moreover, for each packet-optical transport device, the controller controls assignment of individual wavelengths within each channel group so as to balance channel utilization around a center of the spectral range associated with each channel group and to maintain spectral separation of the channels within the channel group.
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