METHOD AND SYSTEM FOR ASSIGNING MODULATION FORMAT IN OPTICAL NETWORKS
First Claim
1. A method for assigning a modulation format in optical networks, the method comprising:
- identifying a pair of nodes of a plurality of nodes of a virtual optical network (VON);
identifying an optical route between the pair of nodes and a desired availability of the optical route;
determining a probability density function (PDF) of a signal-to-noise ratio (SNR) of a signal of the optical route;
determining a SNR threshold such that an integration of the PDF of the SNR of the signal above the SNR threshold corresponds to the desired availability of the optical route;
determining a plurality of spectral efficiencies that corresponds to the SNR threshold, each spectral efficiency of the plurality of spectral efficiencies associated with a respective modulation format of a plurality of modulation formats;
identifying a particular modulation format of the plurality of modulation formats that corresponds to a maximum spectral efficiency of the plurality of spectral efficiencies;
assigning the particular modulation format to the virtual optical network; and
transmitting or receiving traffic over the virtual optical network using the particular modulation format.
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Accused Products
Abstract
Systems and methods for identifying a pair of nodes of a plurality of nodes of a virtual optical network (VON); identifying i) an optical route between the pair of nodes and ii) a desired availability of the optical route; determining a probability density function (PDF) of a signal-to-noise ratio (SNR) of a signal of the optical route; determining a SNR threshold such that an integration of the PDF of the SNR of the signal above the SNR threshold corresponds to the desired availability of the optical route; determining a plurality of spectral efficiencies that corresponds to the SNR threshold, each spectral efficiency of the plurality of spectral efficiencies associated with a respective modulation format of a plurality of modulation formats; and identifying a particular modulation format of the plurality of modulation formats that corresponds to a maximum spectral efficiency of the plurality of spectral efficiencies.
10 Citations
16 Claims
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1. A method for assigning a modulation format in optical networks, the method comprising:
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identifying a pair of nodes of a plurality of nodes of a virtual optical network (VON); identifying an optical route between the pair of nodes and a desired availability of the optical route; determining a probability density function (PDF) of a signal-to-noise ratio (SNR) of a signal of the optical route; determining a SNR threshold such that an integration of the PDF of the SNR of the signal above the SNR threshold corresponds to the desired availability of the optical route; determining a plurality of spectral efficiencies that corresponds to the SNR threshold, each spectral efficiency of the plurality of spectral efficiencies associated with a respective modulation format of a plurality of modulation formats; identifying a particular modulation format of the plurality of modulation formats that corresponds to a maximum spectral efficiency of the plurality of spectral efficiencies; assigning the particular modulation format to the virtual optical network; and transmitting or receiving traffic over the virtual optical network using the particular modulation format. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for assigning a modulation format in optical networks, the system comprising a processor having access to memory media storing instructions executable by the processor to:
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identifying a pair of nodes of a plurality of nodes of a virtual optical network (VON); identifying an optical route between the pair of nodes and a desired availability of the optical route; determining a probability density function (PDF) of a signal-to-noise ratio (SNR) of a signal of the optical route; determining a SNR threshold such that an integration of the PDF of the SNR of the signal above the SNR threshold corresponds to the desired availability of the optical route; determining a plurality of spectral efficiencies that corresponds to the SNR threshold, each spectral efficiency of the plurality of spectral efficiencies associated with a respective modulation format of a plurality of modulation formats; identifying a particular modulation format of the plurality of modulation formats that corresponds to a maximum spectral efficiency of the plurality of spectral efficiencies; assigning the particular modulation format to the virtual optical network; and transmitting or receiving traffic over the virtual optical network using the particular modulation format. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification