Invention Application
US20160013876A1 TIME SYNCHRONIZATION METHOD AND SYSTEM 有权
时间同步方法与系统

  • Patent Title: TIME SYNCHRONIZATION METHOD AND SYSTEM
  • Patent Title (中): 时间同步方法与系统
  • Application No.: US14758619
    Application Date: 2013-12-12
  • Publication No.: US20160013876A1
    Publication Date: 2016-01-14
  • Inventor: Junhui ZHANGDongjia LIULi HELiang XIABin WANGHongguang ZHAO
  • Applicant: ZTE CORPORATION
  • Priority: CN201210591677.8 20121231
  • International Application: PCT/CN2013/089288 WO 20131212
  • Main IPC: H04J3/06
  • IPC: H04J3/06
TIME SYNCHRONIZATION METHOD AND SYSTEM
Abstract:
Disclosed are a time synchronization method and system. The method comprises: an NE1 and the upstream nodes of the NE1 are classified into the first level, and the downstream nodes of the NE1 are classified into the second level, where the first level priority of the first level is higher than the second level priority of the second level; an NE3 connected to the NE1 through a PTP synchronization link in the downstream node receives a first device priority of the NE1 and the first level priority from the NE1; and after the NE3 receives the second device priority of an NE2 and the second level priority sent by the NE2 in the downstream nodes which is connected to the NE1 through the 1PPS+TOD synchronization link, determines that a clock parameter of the NE1 is optimal, and synchronizes the local clock to the NE1.
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