Patents by Inventor Eric L. Chan
Eric L. Chan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10432505Abstract: A network element includes a processor that is configured to receive a request for performing an administratively-requested reroute (ARR) on a network. The ARR includes at least a first data plane operation on the network element and a second data plane operation on another network element. The network element is also configured to determine whether it is capable of performing the first data plane operation without interrupting network traffic on that network element. The network element is further configured to determine whether the other network element is capable of performing the second data plane operation without interrupting network traffic on that network element.Type: GrantFiled: February 15, 2018Date of Patent: October 1, 2019Assignee: Coriant Operations, Inc.Inventors: Yufeng Li, Eric L. Chan
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Publication number: 20190158940Abstract: A procedure for transferring wavelengths, and a system that operates in accordance with the procedure. The system comprises at least one network terminal, each including a switch and a controller. A plurality of wavelength sets are applied to the switch. The controller is arranged to operate the switch such that the switch (a) selects at least one wavelength from at least one of the plurality of wavelength sets, based on electrical monitoring at a port module external to the network terminal, and (b) outputs the at least one wavelength to an output of the at least one network terminal.Type: ApplicationFiled: January 4, 2019Publication date: May 23, 2019Inventors: Peigang Hu, Eric L. Chan, Matthew S. Vrba
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Publication number: 20190132239Abstract: A network element includes a processor that is configured to receive a request for performing an administratively-requested reroute (ARR) on a network. The ARR includes at least a first data plane operation on the network element and a second data plane operation on another network element. The network element is also configured to determine whether it is capable of performing the first data plane operation without interrupting network traffic on that network element. The network element is further configured to determine whether the other network element is capable of performing the second data plane operation without interrupting network traffic on that network element.Type: ApplicationFiled: December 27, 2018Publication date: May 2, 2019Inventors: Yufeng Li, Eric L. Chan
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Publication number: 20180176125Abstract: A network element includes a processor that is configured to receive a request for performing an administratively-requested reroute (ARR) on a network. The ARR includes at least a first data plane operation on the network element and a second data plane operation on another network element. The network element is also configured to determine whether it is capable of performing the first data plane operation without interrupting network traffic on that network element. The network element is further configured to determine whether the other network element is capable of performing the second data plane operation without interrupting network traffic on that network element.Type: ApplicationFiled: February 15, 2018Publication date: June 21, 2018Inventors: Yufeng Li, Eric L. Chan
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Patent number: 9929939Abstract: A network element includes a processor that is configured to receive a request for performing an administratively-requested reroute (ARR) on a network. The ARR includes at least a first data plane operation on the network element and a second data plane operation on another network element. The network element is also configured to determine whether it is capable of performing the first data plane operation without interrupting network traffic on that network element. The network element is further configured to determine whether the other network element is capable of performing the second data plane operation without interrupting network traffic on that network element.Type: GrantFiled: December 26, 2013Date of Patent: March 27, 2018Assignee: Coriant Operations, Inc.Inventors: Yufeng Li, Eric L. Chan
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Publication number: 20170332158Abstract: A procedure for transferring wavelengths, and a system that operates in accordance with the procedure. The system comprises at least one network terminal, each including a switch and a controller. A plurality of wavelength sets are applied to the switch. The controller is arranged to operate the switch such that the switch (a) selects at least one wavelength from at least one of the plurality of wavelength sets, based on electrical monitoring at a port module external to the network terminal, and (b) outputs the at least one wavelength to an output of the at least one network terminal.Type: ApplicationFiled: July 31, 2017Publication date: November 16, 2017Inventors: Peigang Hu, Eric L. Chan, Matthew S. Vrba
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Patent number: 9723385Abstract: A procedure for transferring wavelengths, and a system that operates in accordance with the procedure. The system comprises at least one network terminal, each including a switch and a controller. A plurality of wavelength sets are applied to the switch. The controller is arranged to operate the switch such that the switch (a) selects at least one wavelength from at least one of the plurality of wavelength sets, based on electrical monitoring at a port module external to the network terminal, and (b) outputs the at least one wavelength to an output of the at least one network terminal.Type: GrantFiled: November 6, 2013Date of Patent: August 1, 2017Assignee: Coriant Operations, LLCInventors: Peigang Hu, Eric L. Chan, Matthew S. Vrba
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Patent number: 9608857Abstract: Multiple physical NEs may be presented to a network carrier as a single logical NE comprising multiple physical NEs. Alarms between the multiple physical NEs may be treated as internal connection alarms of the single logical NE instead of endpoint alarms of the multiple physical NEs. A number of alarms in the network may be reduced as well as alarm processing of the alarms at an Operational Support System (OSS), effectuating scaling of alarms as well as relaxing resource requirements (e.g., compute power, memory, etc.) of the OSS.Type: GrantFiled: July 29, 2013Date of Patent: March 28, 2017Assignee: Coriant Operations, Inc.Inventor: Eric L. Chan
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Patent number: 9525504Abstract: A network element includes first and second multiplexers, first and second interfaces, and first and second selecting units. The multiplexers are communicatively coupled. The first interface is communicatively coupled to the first multiplexer and configured to receive multiplexed signals. The second interface is communicatively coupled to the second multiplexer and configured to receive multiplexed signals. The first selecting unit is communicatively coupled to the first and second multiplexers and configured to select between a signal received from the first multiplexer and a signal received from the second multiplexer. The second selecting unit is also communicatively coupled to the first and second multiplexers and configured to select between a signal received from the first multiplexer and a signal received from the second multiplexer.Type: GrantFiled: August 12, 2014Date of Patent: December 20, 2016Assignee: CORIANT OPERATIONS, INC.Inventors: Eric L. Chan, Bradley R. Kangas, Peigang Hu
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Publication number: 20160050043Abstract: A network element includes first and second multiplexers, first and second interfaces, and first and second selecting units. The multiplexers are communicatively coupled. The first interface is communicatively coupled to the first multiplexer and configured to receive multiplexed signals. The second interface is communicatively coupled to the second multiplexer and configured to receive multiplexed signals. The first selecting unit is communicatively coupled to the first and second multiplexers and configured to select between a signal received from the first multiplexer and a signal received from the second multiplexer. The second selecting unit is also communicatively coupled to the first and second multiplexers and configured to select between a signal received from the first multiplexer and a signal received from the second multiplexer.Type: ApplicationFiled: August 12, 2014Publication date: February 18, 2016Inventors: Eric L. Chan, Bradley R. Kangas, Peigang Hu
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Publication number: 20150188803Abstract: A network element includes a processor that is configured to receive a request for performing an administratively-requested reroute (ARR) on a network. The ARR includes at least a first data plane operation on the network element and a second data plane operation on another network element. The network element is also configured to determine whether it is capable of performing the first data plane operation without interrupting network traffic on that network element. The network element is further configured to determine whether the other network element is capable of performing the second data plane operation without interrupting network traffic on that network element.Type: ApplicationFiled: December 26, 2013Publication date: July 2, 2015Applicant: Tellabs Operations, Inc.Inventors: Yufeng Li, Eric L. Chan
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Publication number: 20150125141Abstract: A procedure for transferring wavelengths, and a system that operates in accordance with the procedure. The system comprises at least one network terminal, each including a switch and a controller. A plurality of wavelength sets are applied to the switch. The controller is arranged to operate the switch such that the switch (a) selects at least one wavelength from at least one of the plurality of wavelength sets, based on electrical monitoring at a port module external to the network terminal, and (b) outputs the at least one wavelength to an output of the at least one network terminal.Type: ApplicationFiled: November 6, 2013Publication date: May 7, 2015Applicant: TELLABS OPERATIONS, INC.Inventors: Peigang Hu, Eric L. Chan, Matthew S. Vrba
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Publication number: 20150032834Abstract: Multiple physical NEs may be presented to a network carrier as a single logical NE comprising multiple physical NEs. Alarms between the multiple physical NEs may be treated as internal connection alarms of the single logical NE instead of endpoint alarms of the multiple physical NEs. A number of alarms in the network may be reduced as well as alarm processing of the alarms at an Operational Support System (OSS), effectuating scaling of alarms as well as relaxing resource requirements (e.g., compute power, memory, etc.) of the OSS.Type: ApplicationFiled: July 29, 2013Publication date: January 29, 2015Applicant: Tellabs Operations, Inc.Inventor: Eric L. Chan
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Patent number: 8606101Abstract: An optical ring network has one or more working wavelengths and multiple protection wavelengths adapted to support the working wavelength(s). Routing tables may be used in network nodes to assign traffic of a failed working wavelength to a protection wavelength. The protection technique may be applied to networks employing, for example, Dense Wave Division Multiplexing (DWDM).Type: GrantFiled: April 3, 2013Date of Patent: December 10, 2013Assignee: Tellabs Operations, Inc.Inventors: Eric L. Chan, Matthew S. Vrba
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Patent number: 8433191Abstract: An optical ring network has one or more working wavelengths and multiple protection wavelengths adapted to support the working wavelength(s). Routing tables may be used in network nodes to assign traffic of a failed working wavelength to a protection wavelength. The protection technique may be applied to networks employing, for example, Dense Wave Division Multiplexing (DWDM).Type: GrantFiled: May 25, 2010Date of Patent: April 30, 2013Assignee: Tellabs Operations, Inc.Inventors: Eric L. Chan, Matthew S. Vrba
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Publication number: 20100232783Abstract: An optical ring network has one or more working wavelengths and multiple protection wavelengths adapted to support the working wavelength(s). Routing tables may be used in network nodes to assign traffic of a failed working wavelength to a protection wavelength. The protection technique may be applied to networks employing, for example, Dense Wave Division Multiplexing (DWDM).Type: ApplicationFiled: May 25, 2010Publication date: September 16, 2010Applicant: Tellabs Operations, Inc.Inventors: Eric L. Chan, Matthew S. Vrba
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Patent number: 7751705Abstract: An optical ring network has one or more working wavelengths and multiple protection wavelengths adapted to support the working wavelength(s). Routing tables may be used in network nodes to assign traffic of a failed working wavelength to a protection wavelength. The protection technique may be applied to networks employing, for example, Dense Wave Division Multiplexing (DWDM).Type: GrantFiled: February 24, 2005Date of Patent: July 6, 2010Assignee: Tellabs Operations, Inc.Inventors: Eric L. Chan, Matthew S. Vrba
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Patent number: 7663480Abstract: An optical transponder, system, method, and program wherein the transponder monitors for at least one of a failure or an alarm signal. In response to detecting a failure or alarm signal (communication), the transponder performs at least one of a predetermined action and propagating an alarm communication to a network, based on a configuration property. The transponder can have a configuration property specifying a predetermined action for shutting off a laser if an alarm signal indicating a network failure is detected. As an example, some transponders can be configured to either provide an alarm communication, and/or shut off a laser, depending upon which communication interface detects a network failure or receives an alarm signal. Also, other transponders can be configured to propagate existing alarm communications, without generating new alarm communications or shutting off lasers.Type: GrantFiled: January 12, 2007Date of Patent: February 16, 2010Assignee: Tellabs Operations, Inc.Inventors: Philip J. Santoro, Robert D. Gatze, Gregory V. Degnan, Eric L. Chan, Weiying Cheng
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Publication number: 20080310437Abstract: A method and corresponding apparatus allows unknown packet traffic, such as Ethernet traffic, to be carried on a Resilient Packet Ring (RPR) network without flooding the traffic on the RPR network. Modules in a station of the ring network compare a destination address in a packet traffic signal with known addresses and associate an identifier of a tunnel in the ring network with the packet traffic signal based on the comparison. The modules then associate with the packet traffic signal an identifier of a destination station in the ring network that corresponds to the identifier of the tunnel and forward the packet traffic signal to the destination station via the tunnel. By transmitting the packet traffic via tunnels instead of flooding the RPR network, spatial reuse may be implemented allowing the network to support a higher volume of traffic.Type: ApplicationFiled: June 15, 2007Publication date: December 18, 2008Applicant: Tellabs Operations, Inc.Inventors: Weiying Cheng, Chris R. Zettinger, Eric L. Chan, Matthew S. Vrba
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Publication number: 20080170852Abstract: An optical transponder, system, method, and program wherein the transponder monitors for at least one of a failure or an alarm signal. In response to detecting a failure or alarm signal (communication), the transponder performs at least one of a predetermined action and propagating an alarm communication to a network, based on a configuration property. The transponder can have a configuration property specifying a predetermined action for shutting off a laser if an alarm signal indicating a network failure is detected. As an example, some transponders can be configured to either provide an alarm communication, and/or shut off a laser, depending upon which communication interface detects a network failure or receives an alarm signal. Also, other transponders can be configured to propagate existing alarm communications, without generating new alarm communications or shutting off lasers.Type: ApplicationFiled: January 12, 2007Publication date: July 17, 2008Applicant: TELLABS OPERATIONS, INC.Inventors: Philip J. Santoro, Robert D. Gatze, Gregory V. Degnan, Eric L. Chan, Weiying Cheng