Patents by Inventor Qingzhi FENG

Qingzhi FENG 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).

  • Antenna calibration using fountain coded sequence
    Patent number: 11881903
    Abstract: A method of calibrating an antenna array in a wireless network node is disclosed, the wireless network node including a plurality of antenna branches, each of the plurality of antenna branches including a respective antenna element. The method includes repeating operations of transmitting a slice of a fountain coded sequence through the plurality of antenna branches to the respective antenna elements, and for each antenna branch of the plurality of antenna branches, selecting the transmitted slice as a feedback signal through a return path and determining a signal quality of the feedback signal, until the signal quality of the feedback signal for each antenna branch is greater than a threshold level. The method further includes performing antenna calibration based on the feedback signal for each antenna branch. Related devices, computer programs and computer program products are disclosed.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: January 23, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ang Feng, Qingzhi Feng, Jichang Liao, Yanhui Zhao
  • ANTENNA CALIBRATION USING FOUNTAIN CODED SEQUENCE
    Publication number: 20230085748
    Abstract: A method of calibrating an antenna array in a wireless network node is disclosed, the wireless network node including a plurality of antenna branches, each of the plurality of antenna branches including a respective antenna element. The method includes repeating operations of transmitting a slice of a fountain coded sequence through the plurality of antenna branches to the respective antenna elements, and for each antenna branch of the plurality of antenna branches, selecting the transmitted slice as a feedback signal through a return path and determining a signal quality of the feedback signal, until the signal quality of the feedback signal for each antenna branch is greater than a threshold level. The method further includes performing antenna calibration based on the feedback signal for each antenna branch. Related devices, computer programs and computer program products are disclosed.
    Type: Application
    Filed: January 30, 2020
    Publication date: March 23, 2023
    Inventors: Ang FENG, Qingzhi FENG, Jichang LIAO, Yanhui ZHAO