Patents by Inventor Weijing Chen

Weijing Chen 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: 8300537
    Abstract: An Ethernet switch (112) has a communications interface (122), and a controller (124). The controller is programmed to receive (202) an IP query packet generated by a receiver for collecting telemetry data between a source and the receiver in a multicast network, translate (206) the IP query packet to an Ethernet query packet, collect (208) in the Ethernet query packet telemetry data from the Ethernet switch, and submit (218) the Ethernet query packet to the next network element of the multicast network. Additional embodiment are disclosed.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: October 30, 2012
    Assignee: AT&T Intellectual Property I, LP
    Inventor: Weijing Chen
  • Patent number: 8243732
    Abstract: A method for communicating between a source and a destination includes encapsulating data received from the source in accordance with a service provider format into an upper layer packet. The method includes forwarding the upper layer packet across a service provider network. The upper layer packet is decapsulated into a lower level packet for the destination, based on at least one condition.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: August 14, 2012
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Weijing Chen, Keith Joseph Allen
  • Patent number: 7813349
    Abstract: Method and apparatus to establish a communication link over a high speed communications network. A unique predetermined address assigned to a switching and access node of each network node of the high speed communications network is examined. In addition, a service address associated with a request to establish a communication link is examined. The service address indicates at least one of a type of service being requested, a network service detail, and a name of a desired service provider. Thereafter, an end-to-end communication link is established between the calling party and a destination party by routing a connection request through plural switching nodes in accordance with the calling party address, an address associated with the destination party, and the service address.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: October 12, 2010
    Assignee: AT&T Labs, Inc.
    Inventors: Weijing Chen, Keith Joseph Allen
  • Patent number: 7778263
    Abstract: An internet protocol session is established over a switched network. A path message is forwarded to a destination bridging device that bridges the switched network and an internet protocol network. The destination bridging device has a switched network address and an internet protocol network address and directs the path message to an originating host device over the internet protocol network. A setup message is received from the destination bridging device. The setup message is received over the switched network by the destination bridging device from an originating bridging device that bridges the switched network and the internet protocol network, in response to the originating bridging device receiving the path message on behalf of the originating host device. The internet protocol session is established over the switched network between at least the destination bridging device and the originating bridging device based on forwarding the path message and receiving the setup message.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: August 17, 2010
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Weijing Chen, Paul F. Van Vleck, Keith Joseph Allen
  • Patent number: 7751388
    Abstract: A broadband communication channel access network comprises an Ethernet device disposed in a serving area interface. The Ethernet device serves as an Ethernet bridge for a neighborhood service area. The Ethernet device communicates with a plurality of customer premises modems in the neighborhood service area. An Ethernet switch disposed at a central office communicates with the Ethernet device via a fiber optic medium using an Internet Protocol over a second Ethernet standard. The Ethernet switch provides a packet data core network termination.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: July 6, 2010
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Russell William White, Alicia Marie Russell, Ahmad Ansari, Weijing Chen, Stephen Mark Mueller, Dinesh Nadaralah, Chin Yuan
  • Patent number: 7739394
    Abstract: Data packets of a subscriber are addressed for transmission from an originating device through an IP network to a destination network. A DHCP request, associated with a first subscriber IP address from the IP network, is received from the originating device and routed through the IP network to a destination device in the destination network using an IP network address of the destination device. The destination device forwards the DHCP request to a DHCP server. A DHCP response is received from the DHCP server, through the destination device, including a second subscriber IP address associated with the destination network. The DHCP response is sent through the IP network to the originating device using the first subscriber IP address. The originating device obtains the second subscriber IP address from the DHCP response and addresses data packets using the first and second subscriber IP addresses.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: June 15, 2010
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Weijing Chen, Keith Joseph Allen
  • Publication number: 20100135163
    Abstract: An Ethernet switch (112) has a communications interface (122), and a controller (124). The controller is programmed to receive (202) an IP query packet generated by a receiver for collecting telemetry data between a source and the receiver in a multicast network, translate (206) the IP query packet to an Ethernet query packet, collect (208) in the Ethernet query packet telemetry data from the Ethernet switch, and submit (218) the Ethernet query packet to the next network element of the multicast network. Additional embodiment are disclosed.
    Type: Application
    Filed: February 5, 2010
    Publication date: June 3, 2010
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventor: WEIJING CHEN
  • Patent number: 7684335
    Abstract: An Ethernet switch (112) has a communications interface (122), and a controller (124). The controller is programmed to receive (202) an IP query packet generated by a receiver for collecting telemetry data between a source and the receiver in a multicast network, translate (206) the IP query packet to an Ethernet query packet, collect (208) in the Ethernet query packet telemetry data from the Ethernet switch, and submit (218) the Ethernet query packet to the next network element of the multicast network. Additional embodiment are disclosed.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: March 23, 2010
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: Weijing Chen
  • Patent number: 7609699
    Abstract: A method for using broadband network resources includes providing simultaneous access to an asynchronous transfer mode switched virtual circuit for a plurality of sessions. The access for each session is provided based on an internet protocol session request being received at a service gateway for the sessions. The method also includes tearing down the asynchronous transfer mode switched virtual circuit when all of the sessions are terminated.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: October 27, 2009
    Assignee: AT&T Labs, Inc.
    Inventors: Keith Joseph Allen, Weijing Chen, Anna Salguero
  • Patent number: 7606218
    Abstract: A digital subscriber line access network comprises a remote Ethernet device disposed in a serving area interface. The remote Ethernet device serves as an Ethernet bridge for a neighborhood service area. The remote Ethernet device communicates with a plurality of customer premises modems in the neighborhood service area using an Internet Protocol over an Ethernet standard with a digital subscriber line physical layer. An Ethernet switch disposed at a central office communicates with the remote Ethernet device via a fiber optic medium using an Internet Protocol over a second Ethernet standard. The Ethernet switch provides a packet data core network termination.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: October 20, 2009
    Assignee: AT&T Intellectual Property 1, L.P.
    Inventors: Russell William White, Alicia Marie Russell, Ahmad Ansari, Weijing Chen, Stephen Mark Mueller, Dinesh Nadaralah, Chin Yuan
  • Publication number: 20090028155
    Abstract: A method for providing a virtual private network includes assigning to each edge device of a service provider a unicast IPv6 address, from an IPv6 address block of the service provider for a local area network of a user. The method also includes assigning to each edge device of the service provider a virtual private network specific multicast IPv6 address. The method also includes encapsulating a local area network frame in an IPv6 packet when a mapping of a destination address to an egress edge device does not exist. The method also includes adding a virtual private network identification header to a header of the IPv6 packet and broadcasting IPv6 packets having multicast addresses over the service provider network to all of the edge devices serving the virtual private network. The method also includes transmitting, authenticating and decapsulating the IPv6 packet.
    Type: Application
    Filed: October 6, 2008
    Publication date: January 29, 2009
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Weijing CHEN, Keith Joseph ALLEN
  • Publication number: 20080291920
    Abstract: A system and method for managing communications is disclosed. A system that incorporates teachings of the present disclosure may include, for example, a communication device having a controller element to transmit a packet along a logical tunnel established through an internet service provider, wherein the route of the packet is managed according to a MPLS label of the packet and a VRF routing table. Additional embodiments are disclosed.
    Type: Application
    Filed: May 21, 2007
    Publication date: November 27, 2008
    Applicant: AT&T KNOWLEDGE VENTURES, L.P.
    Inventors: YETIK SERBEST, ERIC PUETZ, WENGE CHEN, MICHAEL PEPE, WEIJING CHEN
  • Patent number: 7447203
    Abstract: Broadband access is provided to a virtual private network (VPN), including multiple local area networks (LANs) configured to interface with an IPv6 service provider network. Data to be routed from an originating device in an originating LAN to a destination device in a destination LAN is received by an ingress line interface and encapsulated in an IPv6 packet. A unique identification number assigned to the VPN is added to the IPv6 packet. When the destination device's address is not mapped to a corresponding egress line interface, the IPv6 packet is broadcast to a multicast address associated with the VPN. When the destination device's address is mapped to the egress line interface, the IPv6 packet is unicast to the egress line interface. The data is ultimately received and decapsulated by the egress line interface. After the VPN identification number is verified, the data is transmitted to the destination device.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: November 4, 2008
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Weijing Chen, Keith Joseph Allen
  • Publication number: 20080049720
    Abstract: A system and method for delivering data via an internet protocol television (IPTV) network are disclosed. In a method disclosed, a first data packet of a first data stream is received. The method determines whether a corresponding second data packet of a second data stream has been forwarded. The corresponding second data packet includes a second payload substantially the same as a first payload of the first data packet. When the corresponding second data packet has not been forwarded, the method forwards the first data packet.
    Type: Application
    Filed: August 25, 2006
    Publication date: February 28, 2008
    Applicant: SBC Knowledge Ventures, LP
    Inventors: Guangtian Liu, Weijing Chen
  • Publication number: 20080019386
    Abstract: An internet protocol session is established over a switched network. A path message is forwarded to a destination bridging device that bridges the switched network and an internet protocol network. The destination bridging device has a switched network address and an internet protocol network address and directs the path message to an originating host device over the internet protocol network. A setup message is received from the destination bridging device. The setup message is received over the switched network by the destination bridging device from an originating bridging device that bridges the switched network and the internet protocol network, in response to the originating bridging device receiving the path message on behalf of the originating host device. The internet protocol session is established over the switched network between at least the destination bridging device and the originating bridging device based on forwarding the path message and receiving the setup message.
    Type: Application
    Filed: July 27, 2007
    Publication date: January 24, 2008
    Applicant: AT&T KNOWLEDGE VENTURES, L.P.
    Inventors: Weijing Chen, Paul Van Vleck, Keith Allen
  • Publication number: 20070286200
    Abstract: A System and method for reducing and surviving failures in a voice trunking over ATM (VTOA) environment includes a CS-IWF complex having a plurality of interconnected CS-IWF units, each unit having a plurality of processors. An end office building may also be provided for interaction with the VTOA system. The end office building includes multiple T-IWFs, and a switch that distributes calls among the T-IWFs in a load sharing manner. Each T-IWF has a plurality of processors and is part of the VTOA system. A switch management system is also provided in the VTOA system. In order to reduce and survive failures, the switch management system includes a plurality of switch management system units. At least one of the switch management system units is a backup unit for a primary switch management system unit. Each switch management system unit provides application redundancy within itself.
    Type: Application
    Filed: April 24, 2007
    Publication date: December 13, 2007
    Applicant: AT&T LABS, INC.
    Inventors: Haifeng BI, George ALLEN, Randy BEAMON, Alice CARLSON, Weijing CHEN, Janice DOERNER, Mehran ESFANDIARI, Gary GIBBONS, Paul KASCHUBE, Bruce NANCE, John PINCH, Tina SIGARTO, Barbara SMITH, Matthew STAFFORD, George YOUNG
  • Patent number: 7301951
    Abstract: A method and system for establishing a guaranteed quality of service (QoS) Internet protocol (IP) connection between an first bridging device and a second bridging device through a switched transport network. The second bridging device receives a first signaling message from the first bridging device through an IP network, the first signaling message containing at least one parameter defining a predefined quality of service. In response, the second bridging device associates the first bridging device's switched transport network address and IP address, without communicating with an address server. The second bridging device directs a second signaling message to the switched transport network of address of the first bridging device, which establishes the IP connection between the first bridging device and the second bridging device through the switched transport network. The IP connection is in accordance with the at least one quality of service parameter contained in the second signaling message.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: November 27, 2007
    Assignee: AT&T Knowledge Ventures, L.P.
    Inventors: Weijing Chen, Keith Joseph Allen
  • Patent number: 7298750
    Abstract: A method and system provide an Internet protocol (IP) session between an originating end-system and a destination end-system through a switched virtual circuit (SVC) short-cut across an asynchronous transfer mode (ATM) network. A first interworking function (IWF) device inserts its ATM address into a transport network hop (THOP) extension object of a resource reservation protocol (RSVP) path message, which may also contain quality of service (QoS) and reverse charging extension objects. IP routers forward the path message through an IP network, without modifying the objects, to a second IWF device, which retrieves the ATM address of the first IWF device. The second IWF device initiates an ATM setup message, including a responsive RSVP reservation request message. The setup message is sent through the ATM network to the first IWF device, which establishes the SVC with the second IWF device, according to the QoS parameter.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: November 20, 2007
    Assignee: AT&T Knowledge Ventures, L.P.
    Inventors: Weijing Chen, Keith Joseph Allen
  • Patent number: 7272145
    Abstract: A system and method establish an Internet protocol (IP) connection between an originating end-system and a destination end-system, incapable of resource reservation protocol (RSVP) signaling, through a switched transport network. A first interworking function (IWF) device inserts its switched transport network address into a first data field of an RSVP path message, received from an RSVP capable proxy signaling device that interfaces with the destination end-system. The first IWF device forwards the path message, through routers in an IP network, which is passed without modification to the first data field. A second IWF device receives the path message and forwards a setup message to the first IWF device through switching devices in the switched transport network, based on the first IWF device's address retrieved from the first data field of the path message. The IP connection is established through the proxy signaling device in response to the setup message.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: September 18, 2007
    Assignee: AT&T Knowledge Ventures, L.P.
    Inventors: Weijing Chen, Paul F. Van Vleck, Keith Joseph Allen
  • Publication number: 20070160038
    Abstract: The present disclosure provides a system that can receive a group of channels (at least one of which includes an I-frame) from a DSL network, a memory that can store the I-frames, and a channel change detector that can detect a user's selection of a particular channel. If the memory contains the I-frame corresponding to the particular channel and if an I-frame has not been received from the DSL network, then the system provides the stored I-frame from the memory to the user.
    Type: Application
    Filed: January 9, 2006
    Publication date: July 12, 2007
    Applicant: SBC Knowledge Ventures, L.P.
    Inventors: Guangtian Liu, Weijing Chen