Patents by Inventor Daiying LIU

Daiying LIU 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).

  • Network Time Protocol Key Encryption
    Publication number: 20240171556
    Abstract: Methods and devices for encrypting network time protocol keys in communication networks are disclosed. A method comprises obtaining an original NTP key, obtaining a local encryption key for encrypting the original NTP key, encrypting the original NTP key using the obtained local encryption key and saving the encrypted NTP key.
    Type: Application
    Filed: March 30, 2021
    Publication date: May 23, 2024
    Inventors: Daiying Liu, Renwang Liu, Zhaoyu Ai
  • Method and apparatus for switching clock sources
    Patent number: 11811503
    Abstract: A method for switching clock sources is provided. In the method, Precision Time Protocol, PTP, packets are monitored using each of PTP ports which connect to a new grandmaster (401). A frequency and a phase for the PTP port are calculated based on the PTP packets (402). In response to a successful check for the frequency and the phase, the PTP port is added to a candidate list (403). A phase calibration and a phase stability check may be introduced prior to the alternate BMCA.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: November 7, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Yao Peng, Jun Wang, Daiying Liu
  • METHOD AND APPARATUS FOR SECURITY COMMUNICATION
    Publication number: 20230239279
    Abstract: Methods and apparatuses for security communication. A method performed by a first communication device includes determining whether a length of an Internet protocol, IP, datagram is larger than a threshold. The method further includes, when the length of the IP datagram is larger than the threshold, fragmenting the IP datagram into two or more IP packets. The length of each of two or more IP packets is not larger than the threshold and each of the two or more IP packets is filled with fragmentation information. The method further includes processing the two or more IP packets to generate two or more corresponding IP security, IPsec, packets. The method further includes sending the two or more corresponding IPsec packets to a second communication device.
    Type: Application
    Filed: April 17, 2020
    Publication date: July 27, 2023
    Inventors: Daiying LIU, Renwang LIU, Jun WANG
  • METHOD AND APPARATUS FOR SWITCHING CLOCK SOURCES
    Publication number: 20220209882
    Abstract: A method for switching clock sources is provided. In the method, Precision Time Protocol, PTP, packets are monitored using each of PTP ports which connect to a new grandmaster (401). A frequency and a phase for the PTP port are calculated based on the PTP packets (402). In response to a successful check for the frequency and the phase, the PTP port is added to a candidate list (403). A phase calibration and a phase stability check may be introduced prior to the alternate BMCA.
    Type: Application
    Filed: April 29, 2019
    Publication date: June 30, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Yao PENG, Jun WANG, Daiying LIU