Patents by Inventor Shihlung Chiang

Shihlung Chiang 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).

  • Method and system for providing wireless-specific services for a wireless access network
    Patent number: 7639647
    Abstract: A method and system for providing wireless-specific services for a wireless access network includes receiving at a call agent of a wireless access network a call origination for a mobile device. Whether the device is registered on the wireless access network is determined. If the mobile device is not registered, whether the mobile device is active is determined at a mobility control function (MCF). If the mobile device is active, the call is connected to the mobile device with a call agent based on a temporary line directory number (TLDN) assigned by the MCF and passed to the call agent in an extended session initiation protocol (SIP) message.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: December 29, 2009
    Assignee: Cisco Technology, Inc.
    Inventors: Ramanamurthy Dantu, Shihlung Chiang, Haochih Paul Yin, Rasik Kachhla
  • Method and system of control signaling for a wireless access network
    Patent number: 7471674
    Abstract: A method and system of control signaling for a wireless access network includes receiving from a wireless access network a signaling message for a mobile device. The signaling message is in a wireless-specific format. The signaling message is converted to a native format of a call agent to generate a call agent message. The call agent message comprises wireless-specific information of the signaling message.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: December 30, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Ramanamurthy Dantu, Shihlung Chiang, Haochih Paul Yin, Rasik Kachhla
  • Method and system for providing supplementary services for a wireless access network
    Patent number: 7444151
    Abstract: A method and system for providing supplementary services for a wireless access network includes downloading supplementary service triggers from a call agent to a mobility control function (MCF) for a wireless access network. Wireless-specific signaling of the wireless access network is communicated to the MCF. The MCF detects events associated with a trigger based on the wireless-specific signaling. The call agent is informed of the events by the MCF through session initiating protocol (SIP) extensions.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: October 28, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Ramanamurthy Dantu, Shihlung Chiang, Haochih Paul Yin, Rasik Kachhla
  • Method and System of Control Signaling for a Wireless Access Network
    Publication number: 20070115944
    Abstract: A method and system of control signaling for a wireless access network includes receiving from a wireless access network a signaling message for a mobile device. The signaling message is in a wireless-specific format. The signaling message is converted to a native format of a call agent to generate a call agent message. The call agent message comprises wireless-specific information of the signaling message.
    Type: Application
    Filed: January 23, 2007
    Publication date: May 24, 2007
    Applicant: Cisco Technology, Inc.
    Inventors: Ramanamurthy Dantu, Shihlung Chiang, Haochih Yin, Rasik Kachhla
  • Method and System for Providing Supplementary Services for a Wireless Access Network
    Publication number: 20070066270
    Abstract: A method and system for providing supplementary services for a wireless access network includes downloading supplementary service triggers from a call agent to a mobility control function (MCF) for a wireless access network. Wireless-specific signaling of the wireless access network is communicated to the MCF. The MCF detects events associated with a trigger based on the wireless-specific signaling. The call agent is informed of the events by the MCF through session initiating protocol (SIP) extensions.
    Type: Application
    Filed: November 7, 2006
    Publication date: March 22, 2007
    Applicant: Cisco Technology, Inc.
    Inventors: Ramanamurthy Dantu, Shihlung Chiang, Haochih Yin, Rasik Kachhla
  • Method and system of control signaling for a wireless access network
    Patent number: 7173925
    Abstract: A method and system of control signaling for a wireless access network includes receiving from a wireless access network a signaling message for a mobile device. The signaling message is in a wireless-specific format. The signaling message is converted to a native format of a call agent to generate a call agent message. The call agent message comprises wireless-specific information of the signaling message.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: February 6, 2007
    Assignee: Cisco Technology, Inc.
    Inventors: Ramanamurthy Dantu, Shihlung Chiang, Haochich P Yin, Rasik Kachhla
  • Method and system for providing supplementary services for a wireless access network
    Patent number: 7164913
    Abstract: A method and system for providing supplementary services for a wireless access network includes downloading supplementary service triggers from a call agent to a mobility control function (MCF) for a wireless access network. Wireless-specific signaling of the wireless access network is communicated to the MCF. The MCF detects events associated with a trigger based on the wireless-specific signaling. The call agent is informed of the events by the MCF through session initiating protocol (SIP) extensions.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: January 16, 2007
    Assignee: Cisco Technology, Inc.
    Inventors: Ramanamurthy Dantu, Shihlung Chiang, Haochich P Yin, Rasik Kachhla
  • Method and system for providing wireless-specific services for a wireless access network
    Publication number: 20060140151
    Abstract: A method and system for providing wireless-specific services for a wireless access network includes receiving at a call agent of a wireless access network a call origination for a mobile device. Whether the device is registered on the wireless access network is determined. If the mobile device is not registered, whether the mobile device is active is determined at a mobility control function (MCF). If the mobile device is active, the call is connected to the mobile device with a call agent based on a temporary line directory number (TLDN) assigned by the MCF and passed to the call agent in an extended session initiation protocol (SIP) message.
    Type: Application
    Filed: February 16, 2006
    Publication date: June 29, 2006
    Inventors: Ramanamurthy Dantu, Shihlung Chiang, Haochih Yin, Rasik Kachhla
  • Method and system for providing wireless-specific services for a wireless access network
    Patent number: 7058033
    Abstract: A method and system for providing wireless-specific services for a wireless access network includes receiving at a call agent of a wireless access network a call origination for a mobile device. Whether the device is registered on the wireless access network is determined. If the mobile device is not registered, whether the mobile device is active is determined at a mobility control function (MCF). If the mobile device is active, the call is connected to the mobile device with a call agent based on a temporary line directory number (TLDN) assigned by the MCF and passed to the call agent in an extended session initiation protocol (SIP) message.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: June 6, 2006
    Assignee: Cisco Technology, Inc.
    Inventors: Ramanamurthy Dantu, Shihlung Chiang, Haochih P Yin, Rasik Kachhla
  • System and method of preserving stable calls during a split mode operation of telecommunications equipment
    Patent number: 6522732
    Abstract: A computerized method of preserving stable calls during a split mode operation of telecommunications equipment includes the steps of sending a call block update message from a first side of the telecommunications equipment to a second side of the telecommunications equipment. The call block update message includes dynamic call state data on the stable call handled by the first side and stored in a call block file in the first side of the telecommunications equipment. The method includes sending a call block update acknowledgement message from the second side of the telecommunications equipment to the first side of the telecommunications equipment in response to receiving the call block update message. The above steps are repeated until all dynamic call state data in the call block file is duplicated and sent to the second side.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: February 18, 2003
    Assignee: Alcatel USA Sourcing, L.P.
    Inventors: Mark W. Pullen, Darrin L. Meek, Lee E. Ballard, Jerry L. Buchheit, Shihlung Chiang, Lorenzo E. Colunga, Don K. Dill, Jr., Chuck C. Fu, Robert A. Landry, William L. Long, Viet N. Nguyen, Kien T. Pham