Patents by Inventor Pawel Piotr Sowinski

Pawel Piotr Sowinski 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: 10536367
    Abstract: Multipoint seamless Bi-directional Forwarding Detection (BFD) may be provided. First, a discriminator and data identifying a headend device may be received by a node from the headend device. The discriminator may be received over a point-to-multipoint pseudowire between the node and the headend device. Next, the node may start a reflector session in response to receiving the discriminator. The reflector session may correspond to the discriminator and the data identifying the headend device. The reflector session may then receive a control packet from the headend device and determine that the control packet includes the discriminator. The control packet may be received over the point-to-multipoint pseudowire. Next, the reflector session on the node may send a reply packet to the headend device in response to determining that the control packet includes the discriminator. The reply packet may be sent over a unicast pseudowire between the node and the headend device.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: January 14, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Carlos M. Pignataro, Nagendra Kumar Nainar, Vengada Prasad Govindan, Pawel Piotr Sowinski
  • Publication number: 20190297005
    Abstract: Multipoint seamless Bi-directional Forwarding Detection (BFD) may be provided. First, a discriminator and data identifying a headend device may be received by a node from the headend device. The discriminator may be received over a point-to-multipoint pseudowire between the node and the headend device. Next, the node may start a reflector session in response to receiving the discriminator. The reflector session may correspond to the discriminator and the data identifying the headend device. The reflector session may then receive a control packet from the headend device and determine that the control packet includes the discriminator. The control packet may be received over the point-to-multipoint pseudowire. Next, the reflector session on the node may send a reply packet to the headend device in response to determining that the control packet includes the discriminator. The reply packet may be sent over a unicast pseudowire between the node and the headend device.
    Type: Application
    Filed: March 21, 2018
    Publication date: September 26, 2019
    Applicant: Cisco Technology, Inc.
    Inventors: Carlos M. Pignataro, Nagendra Kumar Nainar, Vengada Prasad Govindan, Pawel Piotr Sowinski
  • Patent number: 9692564
    Abstract: An example method for Downstream External Physical Interface (DEPI) in Data Over Cable Service Interface Specification (DOCSIS) 3.1 network environments is provided and includes generating, at a Converged Cable Access Platform (CCAP) core, a DEPI-Packet Streaming Protocol (PSP) pseudo-wire (PW) packet including a PSP sub-layer header having a same length for a Quadrature Amplitude Modulation (QAM) channel and an Orthogonal Frequency-Division Multiplexing (OFDM) channel in the DOCSIS network environment, and transmitting the DEPI-PSP PW packet over a DEPI interface to a remote physical layer (R-PHY) entity.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: June 27, 2017
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: John T. Chapman, Jiening Ao, Brian Patrick Bresnahan, Pawel Piotr Sowinski, Lin Su
  • Patent number: 9660774
    Abstract: An example method for determining and managing upstream profiles in Data Over Cable Service Interface Specification (DOCSIS) 3.1 network environments is provided and includes determining, at a Converged Cable Access Platform (CCAP) core, channel conditions independent of any channel effect over a hybrid fiber coaxial (HFC) network between a remote physical layer (R-PHY) entity coupled to the CCAP core and a cable modem (CM) in the DOCSIS 3.1 network environment, and assigning an upstream profile to the CM based on the channel conditions. In specific embodiments, the channel conditions include signal to noise ratio (SNR), modulation error ratio (MER) or group delay. In some embodiments, assigning the upstream profile includes determining a quadrature amplitude modulation (QAM) order based on the SNR or MER, and determining a pilot pattern based on the group delay, the combination of the QAM order and the pilot pattern identifying the upstream profile.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: May 23, 2017
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Hang Jin, Tong Liu, Pawel Piotr Sowinski
  • Patent number: 9246788
    Abstract: A method is provided in one example and includes segmenting a plurality of cable modems into a plurality of groups; identifying traffic being received or transmitted by each of the plurality of cable modems that is below a threshold; and determining whether to move each of the plurality of cable modems into a low-power mode based, at least in part, on the traffic being received or transmitted by each of the plurality of cable modems.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: January 26, 2016
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: John T. Chapman, Pawel Piotr Sowinski
  • Publication number: 20150295746
    Abstract: An example method for Downstream External Physical Interface (DEPI) in Data Over Cable Service Interface Specification (DOCSIS) 3.1 network environments is provided and includes generating, at a Converged Cable Access Platform (CCAP) core, a DEPI-Packet Streaming Protocol (PSP) pseudo-wire (PW) packet including a PSP sub-layer header having a same length for a Quadrature Amplitude Modulation (QAM) channel and an Orthogonal Frequency-Division Multiplexing (OFDM) channel in the DOCSIS network environment, and transmitting the DEPI-PSP PW packet over a DEPI interface to a remote physical layer (R-PHY) entity.
    Type: Application
    Filed: April 13, 2015
    Publication date: October 15, 2015
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: John T. Chapman, Jiening Ao, Brian Patrick Bresnahan, Pawel Piotr Sowinski, Lin Su
  • Publication number: 20150295684
    Abstract: An example method for determining and managing upstream profiles in Data Over Cable Service Interface Specification (DOCSIS) 3.1 network environments is provided and includes determining, at a Converged Cable Access Platform (CCAP) core, channel conditions independent of any channel effect over a hybrid fiber coaxial (HFC) network between a remote physical layer (R-PHY) entity coupled to the CCAP core and a cable modem (CM) in the DOCSIS 3.1 network environment, and assigning an upstream profile to the CM based on the channel conditions. In specific embodiments, the channel conditions include signal to noise ratio (SNR), modulation error ratio (MER) or group delay. In some embodiments, assigning the upstream profile includes determining a quadrature amplitude modulation (QAM) order based on the SNR or MER, and determining a pilot pattern based on the group delay, the combination of the QAM order and the pilot pattern identifying the upstream profile.
    Type: Application
    Filed: April 13, 2015
    Publication date: October 15, 2015
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Hang Jin, Tong Liu, Pawel Piotr Sowinski
  • Publication number: 20140133352
    Abstract: A method is provided in one example and includes segmenting a plurality of cable modems into a plurality of groups; identifying traffic being received or transmitted by each of the plurality of cable modems that is below a threshold; and determining whether to move each of the plurality of cable modems into a low-power mode based, at least in part, on the traffic being received or transmitted by each of the plurality of cable modems.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 15, 2014
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: John T. Chapman, Pawel Piotr Sowinski