Patents by Inventor Wen-Feng Ma

Wen-Feng Ma 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 location server for determining a postion of a target device
    Patent number: 8918115
    Abstract: A method and location server (120) enable determining a position of a target device (105). The method includes receiving at the location server (120), from the target device (105), a distance message identifying a relative distance between the target device (105) and one or more base stations (115). Next, it is determined at the location server (120) that a primary positioning method is unavailable. In response to the primary positioning method being unavailable, a position of the target device (105) is determined using both a) an alternative positioning method and b) the relative distance between the target device (105) and the one or more base stations (115) that was identified in the distance message.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: December 23, 2014
    Assignee: Motorola Mobility LLC
    Inventors: Lai-Jun Zhang, Li-Jun Chang, Wen-Feng Ma
  • METHOD AND LOCATION SERVER FOR DETERMINING A POSTION OF A TARGET DEVICE
    Publication number: 20110059751
    Abstract: A method and location server (120) enable determining a position of a target device (105). The method includes receiving at the location server (120), from the target device (105), a distance message identifying a relative distance between the target device (105) and one or more base stations (115). Next, it is determined at the location server (120) that a primary positioning method is unavailable. In response to the primary positioning method being unavailable, a position of the target device (105) is determined using both a) an alternative positioning method and b) the relative distance between the target device (105) and the one or more base stations (115) that was identified in the distance message.
    Type: Application
    Filed: April 29, 2010
    Publication date: March 10, 2011
    Applicant: MOTOROLA, INC.
    Inventors: Lai-Jun Zhang, Li-Jun Chang, Wen-Feng Ma