Patents by Inventor Hung-Quoc Lai

Hung-Quoc Lai 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).

  • Time-reversal wireless paradigm for internet of things
    Patent number: 9226304
    Abstract: A method of connecting devices to a network is provided. The method includes providing base stations connected to a network, and at each of the base stations, receiving probe signals from terminal devices. For each of the terminal devices, the base station calculates a signature waveform based on a time-reversed waveform of a channel response signal derived from the corresponding probe signal. For each of the terminal devices, the base station determines a downlink transmit signal for the terminal device based on the downlink data and the corresponding signature waveform, and transmits the downlink signals to the terminal devices. Several base stations have overlapping broadcast regions, several terminal devices are located within the overlapped broadcast regions, the base stations transmit the downlink signals using a same frequency band, and some downlink signals transmitted by base stations having overlapping broadcast regions also overlap in time.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: December 29, 2015
    Assignee: Origin Wireless, Inc.
    Inventors: Yan Chen, Hang Ma, Yi Han, Hung-Quoc Lai, K. J. Ray Liu
  • TIME-REVERSAL WIRELESS PARADIGM FOR INTERNET OF THINGS
    Publication number: 20150257167
    Abstract: A method of connecting devices to a network is provided. The method includes providing base stations connected to a network, and at each of the base stations, receiving probe signals from terminal devices. For each of the terminal devices, the base station calculates a signature waveform based on a time-reversed waveform of a channel response signal derived from the corresponding probe signal. For each of the terminal devices, the base station determines a downlink transmit signal for the terminal device based on the downlink data and the corresponding signature waveform, and transmits the downlink signals to the terminal devices. Several base stations have overlapping broadcast regions, several terminal devices are located within the overlapped broadcast regions, the base stations transmit the downlink signals using a same frequency band, and some downlink signals transmitted by base stations having overlapping broadcast regions also overlap in time.
    Type: Application
    Filed: March 10, 2014
    Publication date: September 10, 2015
    Applicant: Origin Wireless Communications, Inc.
    Inventors: Yan Chen, Hang Ma, Yi Han, Hung-Quoc Lai, K. J. Ray Liu