Patents by Inventor Shengyou Zeng

Shengyou Zeng 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: 8453216
    Abstract: An extensible authentication framework is used in cable networks such as Data Over Cable Service Interface Specification (DOCSIS) cable networks. The authentication scheme allows for centralized authentication of cable modems, as well as authentication of the cable network by cable modems. Additionally, the authentication scheme allows a Cable Modem Termination System (CMTS) to authenticate devices downstream from cable modems, such as Customer Premise Equipment (CPE) devices.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: May 28, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Shengyou Zeng, Jason Frazier, Joshua B. Littlefield, Joseph A. Salowey
  • Patent number: 8437360
    Abstract: A CMTS or other data aggregation component having a DHCPv6 relay agent extracts a Media Access Control (MAC) address of an end device from a data packet received from an end device. A DHCPv6 data frame is created for transmission to a DHCPv6 server. The MAC address may be inserted into a specific option of the DHCPv6 data frame, where data in the option may not be processed by the server and are echoed back to the aggregation component or CMTS. The DHCPv6 data frame is transmitted to the DHCPv6 server. The component receives a response message from the server that may contain the MAC address or similar client hardware address as it was sent to the server by the network component. The network component may determine an outgoing port interface from which the response message should be sent, utilizing the MAC address and an interface bundling table. In this manner, interface bundling may be enabled.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: May 7, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Hemant Singh, Madhu Sudan, Shengyou Zeng
  • Patent number: 8255682
    Abstract: A system that eliminates some of the security vulnerabilities in the prior art systems by using a new sequence of steps to perform initialization of the cable modem: Instead of performing authentication after the cable modem has been registered, the cable modem authentication step is performed immediately after the cable modem completes ranging. Thus an early authentication method and system are provided. The control of authentication is shifted from the cable modem to the CMTS. Instead of the CMTS relying on a Registration Request message (REG-REQ) to determine whether a cable modem must perform authentication (that is to determine if BPI+ is enabled) the CMTS configuration is what determines whether a cable modem must perform authentication.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: August 28, 2012
    Assignee: Cisco Technology, Inc.
    Inventor: Shengyou Zeng
  • Patent number: 7957305
    Abstract: A hierarchical cable modem clone detection system: A cable modem clone detection system uses a cable modem media access control (MAC) address and physical location information such as information relating to a cable interface, upstream and downstream port numbers, fiber node information, and load balancing group descriptors to determine if a cable modem is a clone. The hierarchical approach first make a clone determination at a cable modem termination system, then at a regional operations center and finally at a network operations center.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: June 7, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Shengyou Zeng, Hemant Singh
  • Publication number: 20110066855
    Abstract: An extensible authentication framework is used in cable networks such as Data Over Cable Service Interface Specification (DOCSIS) cable networks. The authentication scheme allows for centralized authentication of cable modems, as well as authentication of the cable network by cable modems. Additionally, the authentication scheme allows a Cable Modem Termination System (CMTS) to authenticate devices downstream from cable modems, such as Customer Premise Equipment (CPE) devices.
    Type: Application
    Filed: November 22, 2010
    Publication date: March 17, 2011
    Applicant: Cisco Technology, Inc.
    Inventors: Shengyou Zeng, Jason Frazier, Joshua B. Littlefield, Joseph A. Salowey
  • Patent number: 7865727
    Abstract: An extensible authentication framework is used in cable networks such as Data Over Cable Service Interface Specification (DOCSIS) cable networks. The authentication scheme allows for centralized authentication of cable modems, as well as authentication of the cable network by cable modems. Additionally, the authentication scheme allows a Cable Modem Termination System (CMTS) to authenticate devices downstream from cable modems, such as Customer Premise Equipment (CPE) devices.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: January 4, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Shengyou Zeng, Jason Frazier, Joshua B. Littlefield, Joseph A. Salowey
  • Patent number: 7835274
    Abstract: A provisioning server has a port to receive a request for a network address including an indication that a remote device is wideband capable. The provisioning server also has a processor to respond to the request with a network address and include an address for a configuration file and to provide a configuration file that allows wideband service. A cable modem has a port to request a network address and indicate wideband capability. The cable modem also has a processor to receive a response to that request that includes a network address and an address for a configuration file. The processor also receives a configuration file and allows the cable modem to be configured for wideband service.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: November 16, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: John T. Chapman, Alon Shlomo Bernstein, Jin Zhang, William Guckel, Shengyou Zeng
  • Publication number: 20090125957
    Abstract: A CMTS or other data aggregation component having a DHCPv6 relay agent extracts a Media Access Control (MAC) address of an end device from a data packet received from an end device. A DHCPv6 data frame is created for transmission to a DHCPv6 server. The MAC address may be inserted into a specific option of the DHCPv6 data frame, where data in the option may not be processed by the server and are echoed back to the aggregation component or CMTS. The DHCPv6 data frame is transmitted to the DHCPv6 server. The component receives a response message from the server that may contain the MAC address or similar client hardware address as it was sent to the server by the network component. The network component may determine an outgoing port interface from which the response message should be sent, utilizing the MAC address and an interface bundling table. In this manner, interface bundling may be enabled.
    Type: Application
    Filed: November 14, 2007
    Publication date: May 14, 2009
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Hemant SINGH, Madhu SUDAN, Shengyou ZENG
  • Publication number: 20080126540
    Abstract: A hierarchical cable modem clone detection system: A cable modem clone detection system uses a cable modem media access control (MAC) address and physical location information such as information relating to a cable interface, upstream and downstream port numbers, fiber node information, and load balancing group descriptors to determine if a cable modem is a clone.
    Type: Application
    Filed: August 16, 2006
    Publication date: May 29, 2008
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: SHENGYOU ZENG, HEMANT SINGH
  • Publication number: 20080065883
    Abstract: An extensible authentication framework is used in cable networks such as Data Over Cable Service Interface Specification (DOCSIS) cable networks. The authentication scheme allows for centralized authentication of cable modems, as well as authentication of the cable network by cable modems. Additionally, the authentication scheme allows a Cable Modem Termination System (CMTS) to authenticate devices downstream from cable modems, such as Customer Premise Equipment (CPE) devices.
    Type: Application
    Filed: August 24, 2006
    Publication date: March 13, 2008
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Shengyou Zeng, Jason Frazier, Joshua B. Littlefield, Joseph A. Salowey
  • Publication number: 20080028437
    Abstract: A system that eliminates some of the security vulnerabilities in the prior art systems by using a new sequence of steps to perform initialization of the cable modem: Instead of performing authentication after the cable modem has been registered, the cable modem authentication step is performed immediately after the cable modem completes ranging. Thus an early authentication method and system are provided. The control of authentication is shifted from the cable modem to the CMTS. Instead of the CMTS relying on a Registration Request message (REG-REQ) to determine whether a cable modem must perform authentication (that is to determine if BPI+ is enabled) the CMTS configuration is what determines whether a cable modem must perform authentication.
    Type: Application
    Filed: July 27, 2006
    Publication date: January 31, 2008
    Applicant: CISCO TECHNOLOGY, INC.
    Inventor: SHENGYOU ZENG
  • Publication number: 20070220598
    Abstract: The innovation discloses an AAA-based key/credential distribution system and methodology that is enhanced for establishing a trust relationship between an end device and network application servers which are known at the time of end device authentication. This enhancement can reduce the complexity of key distribution while increasing performance and computational efficiency. By using information that is typically accessible to an AAA server with respect to which instance of a service a client should use based upon load, location, etc., the subject innovation can proactively distribute credentials to an end device. This proactive distribution enables the end device to directly prompt authentication with a network entity.
    Type: Application
    Filed: June 16, 2006
    Publication date: September 20, 2007
    Applicant: CISCO SYSTEMS, INC.
    Inventors: Joseph Salowey, Shengyou Zeng
  • Publication number: 20060002294
    Abstract: A provisioning server has a port to receive a request for a network address including an indication that a remote device is wideband capable. The provisioning server also has a processor to respond to the request with a network address and include an address for a configuration file and to provide a configuration file that allows wideband service. A cable modem has a port to request a network address and indicate wideband capability. The cable modem also has a processor to receive a response to that request that includes a network address and an address for a configuration file. The processor also receives a configuration file and allows the cable modem to be configured for wideband service.
    Type: Application
    Filed: May 25, 2005
    Publication date: January 5, 2006
    Inventors: John Chapman, Alon Bernstein, Jin Zhang, William Guckel, Shengyou Zeng