Patents by Inventor Srinivas V. Makam

Srinivas V. Makam 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).

  • Patent number: 8842516
    Abstract: In a multi-protocol label system (MPLS) carrying data, a working path carries data from a starting point or node to a destination point or node via a working path. The working path includes the switches and physical media linking starting point and the destination point. MPLS system reliability is enhanced by way of a protection path, over which data can be carried from the starting point to the destination point upon a detected failure along the working path. Upstream messages inform one or more MPLS switching systems to make a switchover from a working path to a protection path.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: September 23, 2014
    Assignee: Tellabs Operations, Inc.
    Inventors: Kenneth R. Owens, Srinivas V. Makam, Changcheng Huang, Vishal Sharma
  • Patent number: 8737203
    Abstract: Recovery time upon the failure of a link or switching system in an asynchronous data network can be minimized if downstream data switches provide upstream messages indicating to upstream switching system that the downstream traffic arrived in tact and was properly handled. Upon this loss or failure of the upstream status message to an upstream switching system, an upstream switching system can reroute data traffic around a failed link or failed switch with a minimal amount of lost data. The upstream status message is conveyed from a downstream switching system to an upstream switching system via a reverse notification tree data pathway. The reverse notification pathway is established by using a messaging protocol between network switches by which the working and protection paths, among other things, are established.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: May 27, 2014
    Assignee: Tellabs Operations, Inc.
    Inventors: Kenneth R. Owens, Srinivas V. Makam, Changcheng Huang, Vishal Sharma
  • Publication number: 20140043959
    Abstract: Recovery time upon the failure of a link or switching system in an asynchronous data network can be minimized if downstream data switches provide upstream messages indicating to an upstream switching system that the downstream traffic arrived intact and was properly handled. Upon this loss or failure of the upstream status message to an upstream switching system, an upstream switching system can reroute data traffic around a failed link or failed switch with a minimal amount of lost data. The upstream status message is conveyed from a downstream switching system to an upstream switching system via a reverse notification tree data pathway.
    Type: Application
    Filed: October 16, 2013
    Publication date: February 13, 2014
    Applicant: Tellabs Operations, Inc.
    Inventors: Kenneth R. Owens, Srinivas V. Makam, Changcheng Huang, Vishal Sharma
  • Patent number: 8588058
    Abstract: Recovery time upon the failure of a link or switching system in an asynchronous data network can be minimized if downstream data switches provide upstream messages indicating to upstream switching system that the downstream traffic arrived in tact and was properly handled. Upon this loss or failure of the upstream status message to an upstream switching system, an upstream switching system can reroute data traffic around a failed link or failed switch with a minimal amount of lost data. The upstream status message is conveyed from a downstream switching system to an upstream switching system via a reverse notification tree data pathway.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: November 19, 2013
    Assignee: Tellabs Operations, Inc.
    Inventors: Kenneth R. Owens, Srinivas V. Makam, Changcheng Huang, Vishal Sharma
  • Patent number: 8130637
    Abstract: Recovery time upon the failure of a link or switching system in an asynchronous data network can be minimized if downstream data switches provide upstream messages indicating to upstream switching system that the downstream traffic arrived in tact and was properly handled. Upon this loss or failure of the upstream status message to an upstream switching system, an upstream switching system can reroute data traffic around a failed link or failed switch with a minimal amount of lost data. The upstream status message is conveyed from a downstream switching system to an upstream switching system via a reverse notification tree data pathway.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: March 6, 2012
    Assignee: Tellabs Operations, Inc.
    Inventors: Kenneth R. Owens, Srinivas V. Makam, Changcheng Huang, Vishal Sharma
  • Publication number: 20110085440
    Abstract: Recovery time upon the failure of a link or switching system in an asynchronous data network can be minimized if downstream data switches provide upstream messages indicating to upstream switching system that the downstream traffic arrived in tact and was properly handled. Upon this loss or failure of the upstream status message to an upstream switching system, an upstream switching system can reroute data traffic around a failed link or failed switch with a minimal amount of lost data. The upstream status message is conveyed from a downstream switching system to an upstream switching system via a reverse notification tree data pathway.
    Type: Application
    Filed: December 15, 2010
    Publication date: April 14, 2011
    Applicant: Tellabs Operations, Inc.
    Inventors: Kenneth R. Owens, Srinivas V. Makam, Changcheng Huang, Vishal Sharma
  • Publication number: 20110058472
    Abstract: In a multi-protocol label system (MPLS) carrying data, a working path carries data from a starting point or node to a destination point or node via a working path. The working path includes the switches and physical media linking starting point and the destination point. MPLS system reliability is enhanced by way of a protection path, over which data can be carried from the starting point to the destination point upon a detected failure along the working path. Upstream messages inform one or more MPLS switching systems to make a switchover from a working path to a protection path.
    Type: Application
    Filed: August 6, 2010
    Publication date: March 10, 2011
    Inventors: Kenneth R. Owens, Srinivas V. Makam, Changcheng Huang, Vishal Sharma
  • Patent number: 7881184
    Abstract: Recovery time upon the failure of a link or switching system in an asynchronous data network can be minimized if downstream data switches provide upstream messages indicating to upstream switching system that the downstream traffic arrived in tact and was properly handled. Upon this loss or failure of the upstream status message to an upstream switching system, an upstream switching system can reroute data traffic around a failed link or failed switch with a minimal amount of lost data. The upstream status message is conveyed from a downstream switching system to an upstream switching system via a reverse notification tree data pathway.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: February 1, 2011
    Assignee: Tellabs Operations, Inc.
    Inventors: Kenneth R. Owens, Srinivas V. Makam, Changcheng Huang, Vishal Sharma
  • Publication number: 20100296393
    Abstract: Recovery time upon the failure of a link or switching system in an asynchronous data network can be minimized if downstream data switches provide upstream messages indicating to upstream switching system that the downstream traffic arrived in tact and was properly handled. Upon this loss or failure of the upstream status message to an upstream switching system, an upstream switching system can reroute data traffic around a failed link or failed switch with a minimal amount of lost data. The upstream status message is conveyed from a downstream switching system to an upstream switching system via a reverse notification tree data pathway. The reverse notification pathway is established by using a messaging protocol between network switches by which the working and protection paths, among other things, are established.
    Type: Application
    Filed: August 5, 2010
    Publication date: November 25, 2010
    Inventors: Kenneth R. Owens, Srinivas V. Makam, Changcheng Huang, Vishal Sharma
  • Patent number: 7804767
    Abstract: In a multi-protocol label system (MPLS) carrying data, a working path carries data from a starting point or node to a destination point or node via a working path. The working path includes the switches and physical media linking starting point and the destination point. MPLS system reliability is enhanced by way of a protection path, over which data can be carried from the starting point to the destination point upon a detected failure along the working path. Upstream messages inform one or more MPLS switching systems to make a switchover from a working path to a protection path.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: September 28, 2010
    Assignee: Tellabs Operations, Inc.
    Inventors: Kenneth R. Owens, Srinivas V. Makam, Changcheng Huang, Vishal Sharma
  • Patent number: 7796504
    Abstract: Recovery time upon the failure of a link or switching system in an asynchronous data network can be minimized if downstream data switches provide upstream messages indicating to upstream switching system that the downstream traffic arrived in tact and was properly handled. Upon this loss or failure of the upstream status message to an upstream switching system, an upstream switching system can reroute data traffic around a failed link or failed switch with a minimal amount of lost data. The upstream status message is conveyed from a downstream switching system to an upstream switching system via a reverse notification tree data pathway. The reverse notification pathway is established by using a messaging protocol between network switches by which the working and protection paths, among other things, are established.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: September 14, 2010
    Assignee: Tellabs Operations, Inc.
    Inventors: Kenneth R. Owens, Srinivas V. Makam, Changcheng Huang, Vishal Sharma
  • Publication number: 20090147777
    Abstract: Recovery time upon the failure of a link or switching system in an asynchronous data network can be minimized if downstream data switches provide upstream messages indicating to upstream switching system that the downstream traffic arrived in tact and was properly handled. Upon this loss or failure of the upstream status message to an upstream switching system, an upstream switching system can reroute data traffic around a failed link or failed switch with a minimal amount of lost data. The upstream status message is conveyed from a downstream switching system to an upstream switching system via a reverse notification tree data pathway.
    Type: Application
    Filed: August 14, 2007
    Publication date: June 11, 2009
    Applicant: Tellabs Operations, Inc.
    Inventors: Kenneth R. Owens, Srinivas V. Makam, Changcheng Huang, Vishal Sharma
  • Patent number: 7352758
    Abstract: A communication system (10) employs switching circuits, such as an add/drop multiplexer (70) and another add/drop multiplexer (110). The bandwidth of a circuit switched connection between the switching circuits is altered without taking down the connection.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: April 1, 2008
    Assignee: Tellabs Operations, Inc.
    Inventors: Srinivas V. Makam, Gary L. Davis, Corey M. Parollina, Dmitry Levandovsky
  • Patent number: 7315510
    Abstract: Recovery time upon the failure of a link or switching system in an asynchronous data network can be minimized if downstream data switches can provide upstream messages to upstream switching systems indicating to upstream switching systems that the downstream traffic arrived in tact and was properly handled. In one embodiment, the loss or failure of the upstream status message to an upstream switching system, causes an upstream switching system to reroute data traffic around a failed link or failed switch with a minimal amount of lost data.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: January 1, 2008
    Assignee: Tellabs Operations, Inc.
    Inventors: Kenneth R. Owens, Srinivas V. Makam, Changcheng Huang, Vishal Sharma
  • Patent number: 7298693
    Abstract: Recovery time upon the failure of a link or switching system in an asynchronous data network can be minimized if downstream data switches provide upstream messages indicating to upstream switching system that the downstream traffic arrived in tact and was properly handled. Upon this loss or failure of the upstream status message to an upstream switching system, an upstream switching system can reroute data traffic around a failed link or failed switch with a minimal amount of lost data. The upstream status message is conveyed from a downstream switching system to an upstream switching system via a reverse notification tree data pathway.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: November 20, 2007
    Assignee: Tellabs Operations, Inc.
    Inventors: Kenneth R. Owens, Srinivas V. Makam, Changcheng Huang, Vishal Sharma
  • Patent number: 7095956
    Abstract: A method for validating a path through a switched optical network is disclosed. A bit error rate at the end of the path is determined. The path is validated if the bit error rate is within a predefined range.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: August 22, 2006
    Assignee: Tellabs Operations, Inc.
    Inventors: Dmitry Levandovsky, Srinivas V. Makam, Vishal Sharma
  • Publication number: 20020063915
    Abstract: A method for validating a path through a switched optical network is disclosed. A bit error rate at the end of the path is determined. The path is validated if the bit error rate is within a predefined range.
    Type: Application
    Filed: June 8, 2001
    Publication date: May 30, 2002
    Inventors: Dmitry Levandovsky, Srinivas V. Makam, Vishal Sharma
  • Publication number: 20010033570
    Abstract: A communication system (10) employs switching circuits, such as an add/drop multiplexer (70) and another add/drop multiplexer (110). The bandwidth of a circuit switched connection between the switching circuits is altered without taking down the connection.
    Type: Application
    Filed: February 15, 2001
    Publication date: October 25, 2001
    Inventors: Srinivas V. Makam, Gary L. Davis, Corey M. Parollina, Dmitry Levandovsky
  • Patent number: 5699362
    Abstract: An apparatus that retrieves data from a plurality of long-term memory devices and delivers the data to a packet network over a plurality of channels, wherein each of the channels has a specific bandwidth requirement. The apparatus comprises a storage device adaptor which is connected to the long-term storage devices (such as disk systems, CD ROM, etc.). The adaptor reads data responsive to a selected channel from a storage device to a location in a buffer memory. A network interface reads data from the location in the buffer memory, formats the data, and sends the data to the packet network. A controller selects the channel in such a way that all channels receive their required bandwidth. The controller includes a table having a plurality of entries, wherein each entry may contain a channel identification. All channels have at least one entry in the table, and channels that require more bandwidth have multiple entries in the table.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: December 16, 1997
    Assignee: Lucent Technologies Inc.
    Inventor: Srinivas V. Makam