Patents by Inventor Xueming Wang

Xueming Wang 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 for controlling transmission rate in communication system and apparatus thereof
    Patent number: 7408880
    Abstract: Disclosed is a method for controlling uplink and/or downlink transmission rate between a mobile station and a base station according to transmission power of the mobile station/base station in a communication system. First, a transmission power measurement device measures transmission power of the mobile station/base station. Then, the transmission power measurement device compares the measured transmission power with predefined thresholds to determine whether an event happens. At last, if an event happens, a rate adjustment controller sends a rate adjustment demand according to type of the event to adjust the uplink and/or downlink transmission rate.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: August 5, 2008
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Youqian Xiao, Zhongji Hu, Xueming Wang, Yanmin Tan
  • Method for controlling transmission rate in communication system and apparatus thereof
    Publication number: 20040242256
    Abstract: Disclosed is a method for controlling uplink and/or downlink transmission rate between a mobile station and a base station according to transmission power of the mobile station/base station in a communication system. First, a transmission power measurement device measures transmission power of the mobile station/base station. Then, the transmission power measurement device compares the measured transmission power with predefined thresholds to determine whether an event happens. At last, if an event happens, a rate adjustment controller sends a rate adjustment demand according to type of the event to adjust the uplink and/or downlink transmission rate.
    Type: Application
    Filed: July 15, 2004
    Publication date: December 2, 2004
    Inventors: Youqian Xiao, Zhongji Hu, Xueming Wang, Yanmin Tan
  • Electromagnet with momentary demagnetization
    Patent number: 5255151
    Abstract: An energy saving electromagnet with momentary demagnetization of this invention comprises an armature, an iron core, an exciting coil, and a controllable power source. It is provided with an energy storage means capable of generating a momentary rotation force to cause the armature to rotate slightly for momentary demagnetization after the power source is cut off. The controllable power source includes an initiation power source, a holding power source and a control circuit for turning the supply from the initiation source to the holding source, thereby enabling effective utilization of the electric power and reduction of magnetic resistance. In the holding state, there is no significant demagnetizing air gap between the armature and the iron core.
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: October 19, 1993
    Assignee: Lijun Cai
    Inventors: Lijun Cai, Jingling Deng, Xueming Wang, Fuzhen Shen