Patents by Inventor Judith A. Stafford

Judith A. Stafford 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).

  • IMS gateway systems and methods
    Patent number: 8139735
    Abstract: IMS gateway systems and methods are disclosed for providing online charging for IMS sessions. An IMS gateway system described herein operates based on a state machine to provide charging triggers and IMS session control. For one charging trigger, the IMS gateway system transmits an initial credit control request message to an online charging system (OCS) responsive to receiving a session initiation message from a first subscriber of a session. For another charging trigger, the IMS gateway system transmits an update credit control request message to the OCS responsive to receiving a session acceptance message from a second subscriber of the session. For another charging trigger, the IMS gateway system transmits a termination credit control request message to the OCS responsive to receiving a session termination message. The IMS gateway system may trigger on other session control messages or charging messages from the OCS to provide online charging.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: March 20, 2012
    Assignee: Alcatel Lucent
    Inventors: Yigang Cai, Sheng Chen, Qinghong He, Ling Jiang, Ke Pei, Judith A. Stafford, Jie Su, Ya Ping Wu, Chao Liang Zhang
  • IMS GATEWAY SYSTEMS AND METHODS
    Publication number: 20070280447
    Abstract: IMS gateway systems and methods are disclosed for providing online charging for IMS sessions. An IMS gateway system described herein operates based on a state machine to provide charging triggers and IMS session control. For one charging trigger, the IMS gateway system transmits an initial credit control request message to an online charging system (OCS) responsive to receiving a session initiation message from a first subscriber of a session. For another charging trigger, the IMS gateway system transmits an update credit control request message to the OCS responsive to receiving a session acceptance message from a second subscriber of the session. For another charging trigger, the IMS gateway system transmits a termination credit control request message to the OCS responsive to receiving a session termination message. The IMS gateway system may trigger on other session control messages or charging messages from the OCS to provide online charging.
    Type: Application
    Filed: November 27, 2006
    Publication date: December 6, 2007
    Inventors: Yigang Cai, Sheng Chen, Qinghong He, Ling Jiang, Ke Pei, Judith A. Stafford, Jie Su, Ya Ping Wu, Chao Liang Zhang