Patents by Inventor Michael W. Patrick

Michael W. Patrick 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).

  • Publication number: 20200204402
    Abstract: Approaches for a virtualized Cable Modem Termination System (CMTS) for providing high speed data services to a remote physical device (RPD). The virtualized Cable Modem Termination System (CMTS) comprises a core routing engine (CRE) for performing packet switching and routing and one or more physical or virtual compute servers (CS) that each perform CMTS functions for the one or more remote physical devices (RPDs). A combination of the core routing engine (CRE) and the one or more physical or virtual compute servers (CS) emulate a single Layer 3 CMTS having a single point of management.
    Type: Application
    Filed: March 4, 2020
    Publication date: June 25, 2020
    Inventors: Michael W. Patrick, Nitsan S. Elfassy, Amir Leventer, Jeremy C. Rosenberg
  • Patent number: 10616000
    Abstract: Approaches for a virtualized Cable Modem Termination System (CMTS) for providing high speed data services to a remote physical device (RPD). The virtualized Cable Modem Termination System (CMTS) comprises a core routing engine (CRE) for performing packet switching and routing and one or more physical or virtual compute servers (CS) that each perform CMTS functions for the one or more remote physical devices (RPDs). The core routing engine may comprise one or more core routing engine members. The core routing engine (CRE) and the one or more physical or virtual compute servers (CS) are each implemented entirely on commercial off-the-shelf (COTS) hardware.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: April 7, 2020
    Assignee: Harmonic, Inc.
    Inventors: Michael W. Patrick, Nitsan S. Elfassy, Amir Leventer, Jeremey C. Rosenberg
  • Patent number: 10616126
    Abstract: Scheduling of packets to be forwarded onto DOCSIS downstream channels as part of a Virtual Converged Cable Access Platform (CCAP). A packet to be forwarded onto a DOCSIS downstream channel is enqueued in a service flow queue. The packets stored in the service flow queue are associated with a single service flow. A request is propagated up a hierarchy of schedule elements to a scheduler process to schedule the packet for delivery. The scheduler process determines a grant of how much traffic to offer the DOCSIS downstream channel. The grant determined for the DOCSIS downstream channel may be expressed in units of symbols rather than in bytes. The scheduler process extends a particular grant to the service flow queue by translating symbols in the grant for the service flow queue which issued the request.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: April 7, 2020
    Assignee: Harmonic, Inc.
    Inventors: Michael W. Patrick, Adam Levy, Alex Muller
  • Patent number: 10530677
    Abstract: A network element employing multiple namespaces in performing IP packet routing. The network element maintaining two or more namespaces. A first namespace corresponds to an in-band network domain and a second namespace corresponds to an out-of-band network domain. The network element performing IP packet routing over the in-band network domain and the out-of-band network domain using said two or more namespaces. Embodiments allow operators to more easily implement separate routing tables for “in-band” and “out-of-band” communication. Having separate routing tables for in-band and out-of-band communication prevents malicious CPEs and hacked CMs from directly communicating to servers on the out-of-band network, thereby increasing security for CMTS operators.
    Type: Grant
    Filed: July 9, 2017
    Date of Patent: January 7, 2020
    Assignee: Harmonic, Inc.
    Inventors: Dmytro Kutergin, Michael W. Patrick
  • Publication number: 20180351767
    Abstract: Approaches for a virtualized Cable Modem Termination System (CMTS) for providing high speed data services to a remote physical device (RPD). The virtualized Cable Modem Termination System (CMTS) comprises a core routing engine (CRE) for performing packet switching and routing and one or more physical or virtual compute servers (CS) that each perform CMTS functions for the one or more remote physical devices (RPDs). The core routing engine may comprise one or more core routing engine members. The core routing engine (CRE) and the one or more physical or virtual compute servers (CS) are each implemented entirely on commercial off-the-shelf (COTS) hardware.
    Type: Application
    Filed: July 5, 2018
    Publication date: December 6, 2018
    Inventors: Michael W. Patrick, Nitsan S. Elfassy, Amir Leventer, Jeremey C. Rosenberg
  • Patent number: 10020962
    Abstract: Approaches for a virtualized Cable Modem Termination System (CMTS) for providing high speed data services to a remote physical device (RPD). The virtualized Cable Modem Termination System (CMTS) comprises a core routing engine (CRE) for performing packet switching and routing and one or more core servers (CS) that each perform CMTS functions for the one or more remote physical devices (RPDs). The core routing engine may comprise one or more core routing engine members. The core routing engine (CRE) and the one or more core servers (CS) are each implemented entirely on commercial off-the-shelf (COTS) hardware.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: July 10, 2018
    Assignee: Harmonic, Inc.
    Inventors: Michael W. Patrick, Nitsan S. Elfassy, Amir Leventer, Jeremy C. Rosenberg
  • Publication number: 20180014081
    Abstract: Approaches for performing all DOCSIS downstream and upstream data forwarding functions using executable software. DOCSIS data forwarding functions may be performed by classifying one or more packets, of a plurality of received packets, to a particular DOCSIS system component, and then processing the one or more packets classified to the same DOCSIS system component on a single CPU core. The one or more packets may be forwarded between a sequence of one or more software stages. The software stages may each be configured to execute on separate logical cores or on a single logical core.
    Type: Application
    Filed: July 10, 2017
    Publication date: January 11, 2018
    Inventors: Adam Levy, Pavlo Shcherbyna, Alex Muller, Vladyslav Buslov, Victoria Sinitsky, Michael W. Patrick, Nitin Sasi Kumar
  • Publication number: 20180013660
    Abstract: A network element employing multiple namespaces in performing IP packet routing. The network element maintaining two or more namespaces. A first namespace corresponds to an in-band network domain and a second namespace corresponds to an out-of-band network domain. The network element performing IP packet routing over the in-band network domain and the out-of-band network domain using said two or more namespaces. Embodiments allow operators to more easily implement separate routing tables for “in-band” and “out-of-band” communication. Having separate routing tables for in-band and out-of-band communication prevents malicious CPEs and hacked CMs from directly communicating to servers on the out-of-band network, thereby increasing security for CMTS operators.
    Type: Application
    Filed: July 9, 2017
    Publication date: January 11, 2018
    Inventors: Dmytro Kutergin, Michael W. Patrick
  • Publication number: 20180013691
    Abstract: Scheduling of packets to be forwarded onto DOCSIS downstream channels as part of a Virtual Converged Cable Access Platform (CCAP). A packet to be forwarded onto a DOCSIS downstream channel is enqueued in a service flow queue. The packets stored in the service flow queue are associated with a single service flow. A request is propagated up a hierarchy of schedule elements to a scheduler process to schedule the packet for delivery. The scheduler process determines a grant of how much traffic to offer the DOCSIS downstream channel. The grant determined for the DOCSIS downstream channel may be expressed in units of symbols rather than in bytes. The scheduler process extends a particular grant to the service flow queue by translating symbols in the grant for the service flow queue which issued the request.
    Type: Application
    Filed: July 10, 2017
    Publication date: January 11, 2018
    Inventors: Michael W. Patrick, Adam Levy, Alex Muller
  • Publication number: 20170244577
    Abstract: Approaches for a virtualized Cable Modem Termination System (CMTS) for providing high speed data services to a remote physical device (RPD). The virtualized Cable Modem Termination System (CMTS) comprises a core routing engine (CRE) for performing packet switching and routing and one or more core servers (CS) that each perform CMTS functions for the one or more remote physical devices (RPDs). The core routing engine may comprise one or more core routing engine members. The core routing engine (CRE) and the one or more core servers (CS) are each implemented entirely on commercial off-the-shelf (COTS) hardware.
    Type: Application
    Filed: February 21, 2017
    Publication date: August 24, 2017
    Inventors: Michael W. Patrick, Nitsan S. Elfassy, Amir Leventer, Jeremy C. Rosenberg
  • Patent number: 9363188
    Abstract: Buffer bloat continues to cause latency problems for all kinds of network traffic, e.g., internet protocol traffic. Implementing network based control of packet upstream packet discards enables a scheduler of packets to manage congestion, instead of the network element with bloat. In embodiments, a cable modem termination system may schedule delivery of packets and, after receiving the scheduled packets, discarding packets. The cable modem termination system may determine when to discard a packet based on a detected backlog of data in a cable modem upstream flow queue. For example, a late discard of such packets may be based on information in a schedule request received from the network element.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: June 7, 2016
    Assignee: ARRIS Enterprises, Inc.
    Inventors: Michael W. Patrick, Nate Vanderschaaf
  • Publication number: 20140269293
    Abstract: Buffer bloat continues to cause latency problems for all kinds of network traffic, e.g., internet protocol traffic. Implementing network based control of packet upstream packet discards enables a scheduler of packets to manage congestion, instead of the network element with bloat. In embodiments, a cable modem termination system may schedule delivery of packets and, after receiving the scheduled packets, discarding packets. The cable modem termination system may determine when to discard a packet based on a detected backlog of data in a cable modem upstream flow queue. For example, a late discard of such packets may be based on information in a schedule request received from the network element.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Applicant: General Instrument Corporation
    Inventors: Michael W. Patrick, Nate Vanderschaaf
  • Patent number: 8745676
    Abstract: In a method for admitting a new data file into a channel, a request for admission of the new data file into the channel is received. It is determined as to whether at least a minimum number of bits of at least one current data file has been transferred to the receiver. The rate at which the at least one current data file is transferred is reduced below a minimum constant bit rate in response to a determination that at least a minimum number of bits of the at least one current data file has been transferred to the receiver and the new data file is admitted into the channel.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: June 3, 2014
    Assignee: General Instrument Corporation
    Inventors: Gerald R. Joyce, Christopher W. Brown, Michael W. Patrick
  • Patent number: 8516532
    Abstract: An IP video delivery system and method that allocates a first number of video streams for delivery on a number of channels that, provides a number of bonding groups, where each bonding group bonds at least one of the channels, and allocates a second number of video streams for delivery on the bonding groups. In one aspect, the method delivers the first video streams as unbonded on the channels. The bonding groups utilize bandwidth unused by the first video streams. In one aspect, the method utilizes bandwidth unused by the first or second video streams for high speed data. The method provides instantaneous load balancing to spread the first and second video streams across all available bandwidth in the channels, and delivers those video streams using a variable bit rate with no additional statistical multiplexing rate shaping to fit video streams into the channels.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: August 20, 2013
    Assignee: Motorola Mobility LLC
    Inventors: John M. Ulm, Patrick M. Maurer, Michael W. Patrick
  • Publication number: 20130088961
    Abstract: Apparatus and method for load balancing cable modems across channels of a load balancing group on a DOCSIS network are described. At least one Quality of Service (QoS) parameter is collected for each service flow from cable modems actively passing traffic across one channel of the load balancing group. The QoS parameter collected is used to identify at least one cable modem having a service flow with an inferior grade of the QoS parameter relative to a pre-defined threshold of the QoS parameter. The cable modem having service flows with the inferior grade of the QoS parameter is selected first from the cable modems of the load balancing group for being moved from the one channel to a different channel of the load balancing group for purposes of balancing load of active service flows across the channels.
    Type: Application
    Filed: October 11, 2011
    Publication date: April 11, 2013
    Applicant: GENERAL INSTRUMENT CORPORATION
    Inventors: Anita Ramachandran, Michael W. Patrick, Uma Ramanathan, Nithya Vijayaraghavan
  • Patent number: 8179883
    Abstract: An apparatus, method and system for delivering Internet Protocol (IP) content within a system that includes a bypass architecture, using a Session Encapsulation Information Database (SEIDB). Within an existing PacketCable Multimedia (PCMM) framework used as a control plane for IP content bypass flow setup, the SEIDB system stores session bypass encapsulation information for IP content bypass flows within the system. Within the SEIDB, each entry of bypass encapsulation information has a flow classifier component that uniquely identifies a bypass flow in a manner that allows both a cable modem termination system (CMTS) and the IP content source to uniquely identify the bypass flow at the SEIDB. Initially, the CMTS gathers bypass encapsulation information and uploads it to the SEIDB. Before the bypass flow begins, the IP content source obtains the necessary bypass encapsulation information from the SEIDB, e.g., using a flow classifier as a search filter item.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: May 15, 2012
    Assignee: General Instrument Corporation
    Inventors: Qi Bao, David Flanagan, Gerald R Joyce, Michael W Patrick
  • Publication number: 20110030019
    Abstract: An IP video delivery system and method that allocates a first number of video streams for delivery on a number of channels that, provides a number of bonding groups, where each bonding group bonds at least one of the channels, and allocates a second number of video streams for delivery on the bonding groups. In one aspect, the method delivers the first video streams as unbonded on the channels. The bonding groups utilize bandwidth unused by the first video streams. In one aspect, the method utilizes bandwidth unused by the first or second video streams for high speed data. The method provides instantaneous load balancing to spread the first and second video streams across all available bandwidth in the channels, and delivers those video streams using a variable bit rate with no additional statistical multiplexing rate shaping to fit video streams into the channels.
    Type: Application
    Filed: July 26, 2010
    Publication date: February 3, 2011
    Applicant: GENERAL INSTRUMENT CORPORATION
    Inventors: John M. Ulm, Patrick M. Maurer, Michael W. Patrick
  • Publication number: 20100083329
    Abstract: An apparatus, method and system for delivering Internet content within a system that includes an encapsulation database and a last-hop router as part of a bypass architecture, such as a bypass architecture that transmits IP content from a source to a downstream modulator, such as an EQAM modulator, in a manner that bypasses the system's Cable Modem Termination System (CMTS). The encapsulation database, which typically is controlled by the MSO, but also is in operable communication with the last-hop router and CMTS, is configured to store encapsulation identification information, which is used to identify which portions of the IP content receive bypass encapsulation. The encapsulation database also can include the QoS settings for such identified portions of IP content. The encapsulation database allows the MSO to provide QoS settings for select portions of IP content, such as videos from internet video providers with whom the MSO has made special arrangements.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 1, 2010
    Applicant: GENERAL INSTRUMENT CORPORATION
    Inventors: Gerald R. Joyce, Qi Bao, David Flanagan, Michael W. Patrick
  • Publication number: 20090310596
    Abstract: An apparatus, method and system for delivering Internet content within a system that includes a bypass architecture, such as a bypass architecture that transmits content from the Internet or an Internet content source to a downstream modulator, such as an Edge Quadrature Amplitude Modulation (EQAM) modulator, in a manner that bypasses the system's Cable Modem Termination System (CMTS). Content from the Internet or an Internet source is transmitted to a last-hop router, which is configured to identify content for bypass encapsulation. The last-hop router also can be configured to perform at least a portion of the necessary bypass encapsulation for proper bypass flows of the identified content. Alternatively, the EQAM is configured to perform the bypass encapsulation, and the last-hop router transmits the identified content to the EQAM, which performs at least a portion of the necessary bypass encapsulation on the identified content.
    Type: Application
    Filed: June 17, 2008
    Publication date: December 17, 2009
    Applicant: GENERAL INSTRUMENT CORPORATION
    Inventors: Gerald R. Joyce, Qi Bao, David Flanagan, Michael W. Patrick, John Ulm
  • Publication number: 20090310480
    Abstract: An apparatus, method and system for delivering Internet Protocol (IP) content within a system that includes a bypass architecture, using a Session Encapsulation Information Database (SEIDB). Within an existing PacketCable Multimedia (PCMM) framework used as a control plane for IP content bypass flow setup, the SEIDB system stores session bypass encapsulation information for IP content bypass flows within the system. Within the SEIDB, each entry of bypass encapsulation information has a flow classifier component that uniquely identifies a bypass flow in a manner that allows both a cable modem termination system (CMTS) and the IP content source to uniquely identify the bypass flow at the SEIDB. Initially, the CMTS gathers bypass encapsulation information and uploads it to the SEIDB. Before the bypass flow begins, the IP content source obtains the necessary bypass encapsulation information from the SEIDB, e.g., using a flow classifier as a search filter item.
    Type: Application
    Filed: June 17, 2008
    Publication date: December 17, 2009
    Applicant: GENERAL INSTRUMENT CORPORATION
    Inventors: Qi Bao, David Flanagan, Gerald R. Joyce, Michael W. Patrick