Patents by Inventor Jinzhong Zhang

Jinzhong Zhang 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 apparatus for implementing bi-directional soft handovers between wireless networks without carrier control
    Patent number: 6766171
    Abstract: The present invention provides a method and apparatus that enables handover of a mobile station between a cellular network and a wireless network without control intervention from the cellular network and independent of employed air interface technology. The signaling and control of a switch, for example SS7 messaging, is not required to achieve the handovers implemented by the present invention. In particular, a call is connected (508) between a mobile station (202) and a remote station (204) through a media gateway (210). The media gateway is connected to the mobile station via a first connection line and to the remote station via a second connection line. When the mobile station has entered (514, 516) a transition area (302), a third connection line is established (518) between the media gateway and the mobile station.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: July 20, 2004
    Assignee: Motorola, Inc.
    Inventors: Shaowei Pan, Jinzhong Zhang, Angel Favila, Nicholas Labun
  • Method and apparatus for implementing bi-directional soft handovers between wireless networks without carrier control
    Publication number: 20040002335
    Abstract: The present invention provides a method and apparatus that enables handover of a mobile station between a cellular network and a wireless network without control intervention from the cellular network and independent of employed air interface technology. The signaling and control of a switch, for example SS7 messaging, is not required to achieve the handovers implemented by the present invention. In particular, a call is connected (508) between a mobile station (202) and a remote station (204) through a media gateway (210). The media gateway is connected to the mobile station via a first connection line and to the remote station via a second connection line. When the mobile station has entered (514, 516) a transition area (302), a third connection line is established (518) between the media gateway and the mobile station.
    Type: Application
    Filed: June 26, 2002
    Publication date: January 1, 2004
    Inventors: Shaowei Pan, Jinzhong Zhang, Angel Favila, Nicholas Labun