Patents by Inventor Keming Zhao

Keming Zhao 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).

  • Patent number: 10542489
    Abstract: A terminal wakeup method and an apparatus are disclosed. The method includes: if an access point fails to send a data frame to a station, and the access point fails to send a data frame to the station after channel switching, sending, by the access point, a wakeup signal to the station to wake up the station. According to the method, a data frame loss caused by channel switching can be reduced.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: January 21, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Mingming Zhang, Keming Zhao
  • Publication number: 20180213475
    Abstract: A terminal wakeup method and an apparatus are disclosed. The method includes: if an access point fails to send a data frame to a station, and the access point fails to send a data frame to the station after channel switching, sending, by the access point, a wakeup signal to the station to wake up the station. According to the method, a data frame loss caused by channel switching can be reduced.
    Type: Application
    Filed: March 16, 2018
    Publication date: July 26, 2018
    Inventors: Mingming ZHANG, Keming ZHAO
  • Patent number: 9882822
    Abstract: A data frame sending method and apparatus for effectively improving sending efficiency by, acquiring a basic speed set, determining a current sending speed which is the maximum speed in a candidate speed set, and the candidate speed set is the set of elements from the basic speed set and whose packet sending success rate is greater than a threshold, acquiring an aggregation length value according to the current sending speed, where the aggregation length value is the maximum length of a frame that can be sent at the current sending speed, determining multiple medium access control (MAC) protocol data units (MPDUs) from to-be-sent MPDUs according to the aggregation length value, and aggregating the multiple MPDUs to obtain an aggregate MAC protocol data unit (A-MPDU), where a length of the A-MPDU is less than or equal to the aggregation length value, and sending the A-MPDU at the current sending speed.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: January 30, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jun Peng, Jin Wang, Lin Zhang, Keming Zhao
  • Publication number: 20160191403
    Abstract: A data frame sending method and apparatus for effectively improving sending efficiency by, acquiring a basic speed set, determining a current sending speed which is the maximum speed in a candidate speed set, and the candidate speed set is the set of elements from the basic speed set and whose packet sending success rate is greater than a threshold, acquiring an aggregation length value according to the current sending speed, where the aggregation length value is the maximum length of a frame that can be sent at the current sending speed, determining multiple medium access control (MAC) protocol data units (MPDUs) from to-be-sent MPDUs according to the aggregation length value, and aggregating the multiple MPDUs to obtain an aggregate MAC protocol data unit (A-MPDU), where a length of the A-MPDU is less than or equal to the aggregation length value, and sending the A-MPDU at the current sending speed.
    Type: Application
    Filed: December 30, 2015
    Publication date: June 30, 2016
    Inventors: Jun Peng, Jin Wang, Lin Zhang, Keming Zhao
  • Patent number: 8983775
    Abstract: An electronic device that is operable to provide navigation information to a user by utilizing the navigation system of a separate mobile device, such as a GPS-enabled mobile phone. The electronic device includes a communication interface for communicating navigation data between the mobile device and the electronic device. The electronic device also includes a display for displaying the navigation data received from the mobile device. The display of the electronic device may be larger than the display of the mobile device, such that a driver of an automobile may use the electronic device to provide a more desirable viewing experience. Further, the electronic device may include a user interface, such as a touch screen, that allows a user to access and control the navigation functions of the mobile device. The electronic device may also be operable to communicate with other portable electronic devices.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: March 17, 2015
    Assignee: Flextronics AP, LLC
    Inventors: Austin Hu, Junfeng Ma, Keming Zhao, Kui Han, Yang Liu, Xi Wei Fan
  • Publication number: 20100088029
    Abstract: An electronic device that is operable to provide navigation information to a user by utilizing the navigation system of a separate mobile device, such as a GPS-enabled mobile phone. The electronic device includes a communication interface for communicating navigation data between the mobile device and the electronic device. The electronic device also includes a display for displaying the navigation data received from the mobile device. The display of the electronic device may be larger than the display of the mobile device, such that a driver of an automobile may use the electronic device to provide a more desirable viewing experience. Further, the electronic device may include a user interface, such as a touch screen, that allows a user to access and control the navigation functions of the mobile device. The electronic device may also be operable to communicate with other portable electronic devices.
    Type: Application
    Filed: September 3, 2009
    Publication date: April 8, 2010
    Inventors: Austin Hu, Junfeng Ma, Keming Zhao, Kui Han, Yang Liu, Xi Wei Fan