Patents by Inventor Canhui Ou

Canhui Ou 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: 8224949
    Abstract: A broadband residential gateway (BRG) management system (101) has a communications interface (102) coupled to one or more BRGs 120 and one or more content service providers (CSPs)(110), a memory (104), and a processor (106). The processor can be programmed to establish (202) a content profile for each of the BRGs according to one or more attributes of the BRGs and the CSPs, receive (204) a content access request from one or more BRGs, and supply (206) each BRG access to selectable content from one or more of the CSPs according to the content profile.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: July 17, 2012
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Raj Savoor, Steve Sposato, Canhui Ou
  • Patent number: 8224336
    Abstract: A method and apparatus is disclosed for improving network performance in a communication system. A system that incorporates teachings of the present disclosure may include, for example, a server having a controller to group a plurality of wireless base terminals (WBTs) into first and second groups that share at least one common WBT and select a resultant communication path for the at least one common WBT to a mobile telephone switching office based on differential delays associated with alternative communication paths for combinations of WBTs in at least one of the first and second groups. Additional embodiments are disclosed.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: July 17, 2012
    Assignee: AT&T Intellectual Property I, LP
    Inventors: David Small, Canhui Ou, Sr., Jonathan H. Roll
  • Publication number: 20120087268
    Abstract: A method controls a wireless local area network, which includes a centralized performance management controller and a plurality of network elements. The method includes determining interference between each network element and every other network element of the plurality of network elements, and populating an interference matrix identifying the interference between each combination of two network elements of the plurality of network elements. The method also includes generating an adjacency matrix based on the interference matrix indicating each combination of the two network elements of the plurality of network elements that has an unacceptable level of interference. The method further includes improving overall performance of the wireless local area network by reducing the unacceptable levels of interference indicated by the adjacency matrix.
    Type: Application
    Filed: October 11, 2011
    Publication date: April 12, 2012
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Raj SAVOOR, Canhui Ou, Jin Wang
  • Patent number: 8064413
    Abstract: A wireless local area network (WLAN) control system includes network elements (such as access points and clients) and a centralized dynamic performance management system. The network elements measure signal attenuation in communications with other WLAN network elements. The dynamic performance management system receives signal attenuation data from the network elements, and determines a frequency and/or transmission power level for each of the network elements to reduce interference with the other WLAN network elements. The dynamic performance management system also transmits instructions to each network element to control the frequency and/or transmission power level of the network elements.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: November 22, 2011
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Raj Savoor, Canhui Ou, Jin Wang
  • Patent number: 8041329
    Abstract: A method and apparatus is disclosed for method and apparatus for maintaining network performance in a communication system. A system that incorporates teachings of the present disclosure may include, for example, a network management server (NMS) that manages operations of a communication system including an access office (AO) coupled to a plurality of base terminals (BTs) by way of a corresponding plurality of network elements.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: October 18, 2011
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: David Small, Canhui Ou, Jonathan H. Roll
  • Patent number: 8037505
    Abstract: Various embodiments of the disclosed subject matter provide methods and systems to automatically identify popular television programs based on the viewing of broadcast television programs by at least some of the subscribers of a television distribution system. One or more of the popular television programs identified are stored and offered to one or more of the subscribers on-demand. Subscribers can obtain delivery of at least one of the stored popular television programs for viewing on a subscriber television.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: October 11, 2011
    Assignee: AT&T Intellectual Property I, LP
    Inventors: Canhui Ou, Steven Gemelos, Zhi Li
  • Publication number: 20110197240
    Abstract: A system and method is disclosed for detecting distribution of multimedia content. The volume level of data traffic is monitored for a plurality of users to select any users with high-bandwidth usage. The time of day and the day of the week may be considered when determining whether a user is a high-bandwidth user. Upon selecting a user as one with high-bandwidth usage, such user may be subject to packet inspections of data traffic streams. In some embodiments, content identification parameters or watermarks are added to one or more packets in a data traffic stream carrying multimedia content.
    Type: Application
    Filed: April 11, 2011
    Publication date: August 11, 2011
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Zhi Li, Dipak Ghosal, Canhui Ou, Raghvendra Savoor
  • Publication number: 20110142010
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a base station having a wireless transceiver operable in compliance with a Worldwide Interoperability for Microwave Access protocol, and a controller to manage the wireless transceiver. The controller can be operable to receive a request from a communication device to access the base station, and to direct the communication device to a second base station upon determining that granting wireless access to the communication device reduces an operating performance of the base station below an operating threshold of the base station. Additional embodiments are disclosed.
    Type: Application
    Filed: February 17, 2011
    Publication date: June 16, 2011
    Applicant: AT &T Intellectual Property I, L.P
    Inventors: Canhui Ou, Anthony Petronelli, Kevin Meng
  • Patent number: 7945924
    Abstract: A system and method is disclosed for detecting distribution of multimedia content. The volume level of data traffic is monitored for a plurality of users to select any users with high-bandwidth usage. The time of day and the day of the week may be considered when determining whether a user is a high-bandwidth user. Upon selecting a user as one with high-bandwidth usage, such user may be subject to packet inspections of data traffic streams. In some embodiments, content identification parameters or watermarks are added to one or more packets in a data traffic stream carrying multimedia content.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: May 17, 2011
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Zhi Li, Dipak Ghosal, Canhui Ou, Raghvendra Savoor
  • Patent number: 7941778
    Abstract: A network is represented using a graph. The graph comprises a plurality of vertices and a plurality of edges. The vertices comprise a source vertex, a destination vertex and a vertex u. The edges link corresponding adjacent pairs of the vertices. A minimum cost path in the graph is determined from the source vertex to the destination vertex, wherein the vertex u is in the minimum cost path. An edge from the vertex u in the minimum cost path introduces an additional capital expenditure cost that is dependent on how the minimum cost path traverses from the source vertex to the vertex u.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: May 10, 2011
    Assignee: AT&T Intellectual Property I, LP
    Inventors: Canhui Ou, Jian Li, Steven Gemelos, Howard Scott Mountford, Brent Edward Jacobson, Orlando Echeverria-Calvet, Thomas Cronin, Jerold Daizo Osato
  • Patent number: 7924793
    Abstract: Methods and apparatus to manage bandwidth in a wireless network are disclosed. For a wireless network that includes a wireless access point supporting a private service set identifier (SSID) and a public SSID, a disclosed example apparatus comprises a policy interface to receive a value representative of a permissible public bandwidth accessible via the public SSID, and a bandwidth allocator to control usage of the permissible public bandwidth, wherein the bandwidth allocator and the policy interface are physically separate from the wireless access point.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: April 12, 2011
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Raghvendra Gurudath Savoor, Kevin Meng, Canhui Ou
  • Patent number: 7916698
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a Worldwide Interoperability for Microwave Access (WiMAX) base station having a wireless transceiver, and a controller to manage the wireless transceiver. The controller can direct a communication device requesting wireless access to another WiMAX base station upon determining that granting wireless access to the communication device reduces an operating performance of the WiMAX base station below its operating threshold. Additional embodiments are disclosed.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: March 29, 2011
    Assignee: AT&T Intellectual Property I, LP
    Inventors: Canhui Ou, Anthony Petronelli, Kevin Meng
  • Patent number: 7912691
    Abstract: A distributed network including at least two Reconfigurable Optical Add/Drop Multiplexers (ROADMs) may be designed by a method including simulating routing of data traffic in a distributed network. The method may also include identifying a first location for placement of a first ROADM based at least partially on the simulated routing of the data traffic. The method may also include simulating rerouting of data traffic in the distributed network including the first ROADM at the first location. The method may further include identifying a second location for placement of a second ROADM based at least partially on the simulated rerouting of the data traffic.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: March 22, 2011
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Canhui Ou, Steven Gemelos, Jian Li, Howard S. Mountford, Orlando Echeverria-Calvet
  • Publication number: 20100331002
    Abstract: A method and apparatus is disclosed for improving network performance in a communication system. A system that incorporates teachings of the present disclosure may include, for example, a server having a controller to group a plurality of wireless base terminals (WBTs) into first and second groups that share at least one common WBT and select a resultant communication path for the at least one common WBT to a mobile telephone switching office based on differential delays associated with alternative communication paths for combinations of WBTs in at least one of the first and second groups. Additional embodiments are disclosed.
    Type: Application
    Filed: September 7, 2010
    Publication date: December 30, 2010
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: DAVID SMALL, CANHUI OU, JONATHAN H. ROLL
  • Patent number: 7814521
    Abstract: A method is disclosed for distributing advertising data in an internet protocol television (IPTV) system, the method including dividing a plurality of end user devices in the IPTV system into K advertising groups; multicasting J advertising data multicast groups to end user devices in J advertising groups having a percentile ranking above or equal to a predetermined percentile ranking; and unicasting advertising data channels for actively viewed IPTV channels being viewed by other end users.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: October 12, 2010
    Assignee: ATT Knowledge Venturers, L.P.
    Inventors: Canhui Ou, Zhi Li, Yali Liu
  • Patent number: 7813736
    Abstract: A method and apparatus is disclosed for improving network performance in a communication system. A system that incorporates teachings of the present disclosure may include, for example, a network management system (NMS) that manages operations of a communication system including a mobile telephone switching office (MTSO) coupled to a plurality of wireless base terminals (WBTs) by way of a corresponding plurality of network elements, having a network configuration element that identifies for each of the plurality of WBTs a resultant communication path to the MTSO according to a plurality of performance characteristics calculated from alternative communication paths connecting combinations of the WBTs to the MTSO. Additional embodiments are disclosed.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: October 12, 2010
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: David Small, Canhui Ou, Jonathan H. Roll
  • Publication number: 20100228605
    Abstract: A broadband residential gateway (BRG) management system (101) has a communications interface (102) coupled to one or more BRGs 120 and one or more content service providers (CSPs) (110), a memory (104), and a processor (106). The processor can be programmed to establish (202) a content profile for each of the BRGs according to one or more attributes of the BRGs and the CSPs, receive (204) a content access request from one or more BRGs, and supply (206) each BRG access to selectable content from one or more of the CSPs according to the content profile.
    Type: Application
    Filed: May 19, 2010
    Publication date: September 9, 2010
    Applicant: SBC KNOWLEDGE VENTURES, L.P.
    Inventors: RAJ SAVOOR, STEVE SPOSATO, CANHUI OU
  • Patent number: 7768935
    Abstract: Various embodiments of the disclosed subject matter provide methods and systems to generate node-disjoint routing paths from a root node to each node in a network node set, identify potential intermediate office node (IO) candidate pairs from the generated node-disjoint routing paths, generate a per central office node (CO) serving cost estimate for each IO candidate pair, and identify a low cost IO candidate pair having at least two node-disjoint paths to the root node without traversing nodes along a diverse path between the low cost IO candidate pair and subtending CO nodes.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: August 3, 2010
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Canhui Ou, Mung Chiang, Zhi Li, Orestis Manthoulis, Xiaochuan Yi, Kaiyan Chen
  • Patent number: 7747721
    Abstract: A broadband residential gateway (BRG) management system (101) has a communications interface (102) coupled to one or more BRGs 120 and one or more content service providers (CSPs) (110), a memory (104), and a processor (106). The processor can be programmed to establish (202) a content profile for each of the BRGs according to one or more attributes of the BRGs and the CSPs, receive (204) a content access request from one or more BRGs, and supply (206) each BRG access to selectable content from one or more of the CSPs according to the content profile.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: June 29, 2010
    Assignee: SBC Knowledge Ventures, L.P.
    Inventors: Raj Savoor, Steve Sposato, Canhui Ou
  • Publication number: 20100085869
    Abstract: A method and apparatus is disclosed for method and apparatus for maintaining network performance in a communication system. A system that incorporates teachings of the present disclosure may include, for example, a network management server (NMS) that manages operations of a communication system including an access office (AO) coupled to a plurality of base terminals (BTs) by way of a corresponding plurality of network elements.
    Type: Application
    Filed: October 22, 2009
    Publication date: April 8, 2010
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: DAVID SMALL, CANHUI OU, JONATHAN H. ROLL