Patents by Inventor Xinhong Tang

Xinhong Tang 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 implementing roam restriction
    Patent number: 7817999
    Abstract: A method for implementing roam restriction and a system thereof are disclosed in the present invention, by setting up a list of areas where the terminal is allowed to roam. The method includes: the terminal sends a wireless service request to the mobile switching center on the wireless communication network side, wherein the request carries the information of at least one cell currently activated by this terminal; the mobile switching center determines whether there is a cell among the at least one cell currently activated by this terminal, whose cell information is included in the list of areas where the terminal is allowed to roam, if yes, executes current wireless service for this terminal; otherwise, rejects to execute current wireless service for this terminal.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: October 19, 2010
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xinhong Tang, Shiqian Li, Hui Cao
  • Method and system for implementing roam restriction
    Publication number: 20070060122
    Abstract: A method for implementing roam restriction and a system thereof are disclosed in the present invention, by setting up a list of areas where the terminal is allowed to roam. The method includes: the terminal sends a wireless service request to the mobile switching center on the wireless communication network side, wherein the request carries the information of at least one cell currently activated by this terminal; the mobile switching center determines whether there is a cell among the at least one cell currently activated by this terminal, whose cell information is included in the list of areas where the terminal is allowed to roam, if yes, executes current wireless service for this terminal; otherwise, rejects to execute current wireless service for this terminal.
    Type: Application
    Filed: September 22, 2006
    Publication date: March 15, 2007
    Inventors: Xinhong Tang, Shiqian Li, Hui Cao