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Class Information
Number: 398/57
Name: Optical communications > Multiplex > Optical switching > Space > Path finding or path routing
Description: Subject matter wherein a suitable signal path is determined from the input to the output of the switching network.

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8705971 Three-way handshake (3WHS) optical network signaling protocol Apr. 22, 2014
8670666 Channel validation in optical networks using multi-channel impairment evaluation Mar. 11, 2014
8666246 Path computation element method to support routing and wavelength assignment in wavelength switched optical networks Mar. 4, 2014
8666247 Bandwidth defragmentation systems and methods in optical networks Mar. 4, 2014
8660427 Method and apparatus of the architecture and operation of control processing unit in wavelenght-division-multiplexed photonic burst-switched networks Feb. 25, 2014
8655172 System and method for obtaining optical signal information Feb. 18, 2014
8655173 Extending routing protocols to accommodate wavelength switched optical networks Feb. 18, 2014
8639116 Digital subcarrier optical network utilizing digital subcarrier cross-connects with increased energy efficiency Jan. 28, 2014
8639113 Network protection switching Jan. 28, 2014
8634714 Methods for determining energy efficient optical routes Jan. 21, 2014
8625995 Signal power based routing in WDM all-optical networks Jan. 7, 2014
8588611 Method for establishing an inter-domain path that satisfies wavelength continuity constraint Nov. 19, 2013
8582968 Method, apparatus and system for advertising routing protocol message and calculating route Nov. 12, 2013
8565598 Selecting an optical path for a new connection with the minimum number of optical regenerators Oct. 22, 2013
8553707 Administrative boundaries in single or multiple domain optical networks Oct. 8, 2013
8553702 Methods and systems for automatic carving and policy enforcement for optical transport network hierarchy Oct. 8, 2013
8548325 System, device, and method for supporting cut-through paths in an optical communication system Oct. 1, 2013
8538260 Wavelength selection Sep. 17, 2013
8532481 Dual fault tolerant optical networking with fast protection performance Sep. 10, 2013
8532484 Method for routing and wavelength assignment information encoding for wavelength switched optical networks Sep. 10, 2013
8521022 Dynamic assignment of wavelengths in agile photonic networks Aug. 27, 2013
8521021 Method and apparatus for switching optical wavelengths Aug. 27, 2013
8515280 Physically-diverse routing in heterogeneous optical networks Aug. 20, 2013
8503878 Flow-subcarrier mapping in optical orthogonal frequency division multiplexing Aug. 6, 2013
8488935 Fiber to the premise service disconnect via macro-bending loss Jul. 16, 2013
8488963 Link diversity and load balancing across digital and optical express-thru nodes Jul. 16, 2013
8467375 Hybrid packet-optical private network systems and methods Jun. 18, 2013
8467681 Method for characterizing wavelength switched optical network signal characteristics and network element compatibility constraints for generalized multi-protocol label switching Jun. 18, 2013
8463091 Methods to reconfigure all-fiber optical cross-connects Jun. 11, 2013
8463123 Optical switch and protocols for use therewith Jun. 11, 2013
8457490 Use of subcarrier deactivation in a multi-subcarrier channel to improve reach in an optical network Jun. 4, 2013
8457491 Allocation of transmission power in an optical communication system Jun. 4, 2013
8452176 Reachability matrices spanning multiple domains in an optical network May. 28, 2013
8447181 Method and apparatus for displaying and identifying available wavelength paths across a network May. 21, 2013
8406622 1:N sparing of router resources at geographically dispersed locations Mar. 26, 2013
8401385 Optically switched communication network Mar. 19, 2013
8396364 System and method for impairment-aware routing and wavelength assignment in wavelength switched optical networks Mar. 12, 2013
8380066 Network management system Feb. 19, 2013
8355632 Transmission apparatus Jan. 15, 2013
8355633 Communication network management system, wavelength-division multiplex apparatus, communication management apparatus, communication network management method and communication network manageme Jan. 15, 2013
8346079 Path computation element protocol (PCEP) operations to support wavelength switched optical network routing, wavelength assignment, and impairment validation Jan. 1, 2013
8326148 Optical network Dec. 4, 2012
8315267 Method and arrangement for an improved buffer solution within a communication network switch Nov. 20, 2012
8315519 Systems and methods for transmitting signals in communication networks Nov. 20, 2012
8301026 Network restoration under dual failures using path protecting preconfigured cycles Oct. 30, 2012
8295701 Adaptive hybrid optical control plane determination of lightpaths in a DWDM network Oct. 23, 2012
8290366 Extending path computation element protocol to accommodate routing and wavelength assignment in wavelength switched optical networks Oct. 16, 2012
8290367 OSS support for control plane technology Oct. 16, 2012
8275260 Network restoration under link or node failure using preconfigured virtual cycles Sep. 25, 2012
8249450 Methods of port mapping in fiber optic network devices Aug. 21, 2012

1 2 3 4 5

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