发明名称 |
Routing, wavelength assignment, and spectrum allocation in wavelength convertible flexible optical wavelength-division multiplexing networks |
摘要 |
There is provided a method in a wavelength convertible flexible optical wavelength-division multiplexing (WC-FWDM) network. The network has a plurality of optical nodes interconnected by a plurality of optical fibers. The network is for providing an overall spectrum divisible into a set of consecutive wavelength slots. At least one optical node has at least one wavelength converter for wavelength conversion. The method includes determining a channel route through the network commencing at a source node and ceasing at a destination node. The determined channel route is selectively tunable responsive to selected ones of a plurality of routing methods. The routing methods are so selected responsive to a routing policy having one or more objectives of minimization of channel blocking, minimization of a number of wavelength converters used in the network, and minimization of physical distance traversed by a channel, and minimization of operating wavelengths of a channel. |
申请公布号 |
US8909043(B2) |
申请公布日期 |
2014.12.09 |
申请号 |
US201113324112 |
申请日期 |
2011.12.13 |
申请人 |
NEC Laboratories America, Inc. |
发明人 |
Patel Ankitkumar N.;Ji Philip N.;Jue Jason P. |
分类号 |
H04J14/00;H04J14/02 |
主分类号 |
H04J14/00 |
代理机构 |
|
代理人 |
Kolodka Joseph |
主权项 |
1. A method in a wavelength convertible flexible optical wavelength-division multiplexing (WC-FWDM) network having a plurality of optical nodes interconnected by a plurality of optical fibers, the network for providing an overall spectrum divisible into a set of consecutive wavelength slots, at least one of the plurality of optical nodes having at least one wavelength converter for wavelength conversion, the method comprising:
determining a channel route through the network commencing at a source node and ceasing at a destination node, the channel route being selectively tunable responsive to selected ones of a plurality of routing methods, wherein the selected ones of the plurality of routing methods are so selected responsive to a routing policy having one or more objectives of minimization of a blocking of one of more channels in the set, minimization of a number of wavelength converters used in the network, minimization of physical distance traversed by a channel between a source node and a destination node, and minimization of operating wavelengths of a channel, wherein the channel route being selectively tunable comprises determining a set of input ports aj from the relationship aj={min(w)|w εWuj}, where j and u denote nodes, w denotes a wavelength slot, and Wuj denotes a set of available wavelength slots at nodes u and j. |
地址 |
Princeton NJ US |