Patents by Inventor Zhu Cheng

Zhu Cheng 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 synchronization method and device
    Patent number: 11228387
    Abstract: A time synchronization method and a device, where the method includes generating, by a first device, a first time synchronization frame according to a first coding scheme, where the first time synchronization frame includes a first frame header and a first time of day (TOD), the first frame header carries an identifier of the first coding scheme, and the first coding scheme defines a boundary of the first time synchronization frame and a location of the first TOD in the first time synchronization frame, and sending, by the first device, the first time synchronization frame to a second device using a first single line to trigger the second device to identify the first time synchronization frame according to the identifier of the first coding scheme, to obtain the first TOD from the first time synchronization frame, and to trace a time of the first device according to the first TOD.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: January 18, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Junfeng Luo, Jinhui Wang, Zhu Cheng, Feng Wu
  • Time Synchronization Method and Device
    Publication number: 20200403720
    Abstract: A time synchronization method and a device, where the method includes generating, by a first device, a first time synchronization frame according to a first coding scheme, where the first time synchronization frame includes a first frame header and a first time of day (TOD), the first frame header carries an identifier of the first coding scheme, and the first coding scheme defines a boundary of the first time synchronization frame and a location of the first TOD in the first time synchronization frame, and sending, by the first device, the first time synchronization frame to a second device using a first single line to trigger the second device to identify the first time synchronization frame according to the identifier of the first coding scheme, to obtain the first TOD from the first time synchronization frame, and to trace a time of the first device according to the first TOD.
    Type: Application
    Filed: September 1, 2020
    Publication date: December 24, 2020
    Inventors: Junfeng Luo, Jinhui Wang, Zhu Cheng, Feng Wu
  • Time synchronization method and device
    Patent number: 10855387
    Abstract: A time synchronization method and a device, where the method includes generating, by a first device, a first time synchronization frame according to a first coding scheme, where the first time synchronization frame includes a first frame header and a first time of day (TOD), the first frame header carries an identifier of the first coding scheme, and the first coding scheme defines a boundary of the first time synchronization frame and a location of the first TOD in the first time synchronization frame, and sending, by the first device, the first time synchronization frame to a second device using a first single line to trigger the second device to identify the first time synchronization frame according to the identifier of the first coding scheme, to obtain the first TOD from the first time synchronization frame, and to trace a time of the first device according to the first TOD.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: December 1, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Junfeng Luo, Jinhui Wang, Zhu Cheng, Feng Wu
  • Packet processing method and apparatus
    Patent number: 10313258
    Abstract: Embodiments of the present invention provide a packet processing method and apparatus. After receiving a packet, a first network device processes the packet, and determines a first latency of the processed packet in a FIFO memory, where: the first latency is equal to a difference obtained by subtracting a second latency from a target latency, the second latency includes a third latency, and the third latency includes a time interval for processing the packet.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: June 4, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Cong Chen, Zhu Cheng
  • Time Synchronization Method and Device
    Publication number: 20190158204
    Abstract: A time synchronization method and a device, where the method includes generating, by a first device, a first time synchronization frame according to a first coding scheme, where the first time synchronization frame includes a first frame header and a first time of day (TOD), the first frame header carries an identifier of the first coding scheme, and the first coding scheme defines a boundary of the first time synchronization frame and a location of the first TOD in the first time synchronization frame, and sending, by the first device, the first time synchronization frame to a second device using a first single line to trigger the second device to identify the first time synchronization frame according to the identifier of the first coding scheme, to obtain the first TOD from the first time synchronization frame, and to trace a time of the first device according to the first TOD.
    Type: Application
    Filed: January 28, 2019
    Publication date: May 23, 2019
    Inventors: Junfeng Luo, Jinhui Wang, Zhu Cheng, Feng Wu
  • Packet Processing Method and Apparatus
    Publication number: 20180077076
    Abstract: Embodiments of the present invention provide a packet processing method and apparatus. After receiving a packet, a first network device processes the packet, and determines a first latency of the processed packet in a FIFO memory, where: the first latency is equal to a difference obtained by subtracting a second latency from a target latency, the second latency includes a third latency, and the third latency includes a time interval for processing the packet.
    Type: Application
    Filed: November 20, 2017
    Publication date: March 15, 2018
    Inventors: Cong Chen, Zhu Cheng