Patents by Inventor Huixue Xu

Huixue Xu 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).

  • Fixed mobile roaming service solution
    Patent number: 8676195
    Abstract: The present invention is directed to systems for and methods of using dual mode handsets or softphone client for voice, sms, and data services. In one embodiment of the present invention, a mobile handset uses a SIP User Agent to register on a visiting network. The mobile handset generates SIP REGISTER messages. The SIP REGISTER messages are translated into corresponding MAP registration (or RADIUS message) and authentication commands, allowing system to contact the HPLMN HLR (or home AAA) associated with the mobile device to authenticate the mobile device and register it on a VLR of a visiting network. MAP responses (or RADIUS response) are translated to corresponding SIP commands that are forwarded to the mobile device, thereby completing the connection set up.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: March 18, 2014
    Assignee: Aicent, Inc.
    Inventors: David Xining Zhang, Huixue Xu, Xaiojun Ma, Richard Haichen Xu
  • Fixed mobile roaming service solution
    Publication number: 20070254648
    Abstract: The present invention is directed to systems for and methods of using dual mode handsets or softphone client for voice, sms, and data services. In one embodiment of the present invention, a mobile handset uses a SIP User Agent to register on a visiting network. The mobile handset generates SIP REGISTER messages. The SIP REGISTER messages are translated into corresponding MAP registration (or RADIUS message) and authentication commands, allowing system to contact the HPLMN HLR (or home AAA) associated with the mobile device to authenticate the mobile device and register it on a VLR of a visiting network. MAP responses (or RADIUS response) are translated to corresponding SIP commands that are forwarded to the mobile device, thereby completing the connection set up.
    Type: Application
    Filed: April 16, 2007
    Publication date: November 1, 2007
    Inventors: David Zhang, Huixue Xu, Xaiojun Ma, Richard Xu