公开(公告)号：US20150207580A1

公开(公告)日：2015-07-23

申请号：US14671975

申请日：2015-03-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hao LI ,  Jun XING ,  Xiaoyu TANG ,  Qixiang ZHONG

IPC: H04J3/06

CPC classification number: H04J3/0679 ,  H04J3/0641

Abstract: A method for synchronizing clocks, including: receiving at least two clock signals, where the at least two clock signals are sent by a bidirectional clock tracking link respectively corresponding thereto; setting two or more clock signals coming from a same network element into a same clock source group; selecting one clock signal in a same clock source group as a currently tracked clock signal; and if the currently tracked clock signal belongs to the clock source group, respectively sending a standby clock signal carrying quality-level do not use information by using the bidirectional clock tracking link respectively corresponding to each of the clock signals in the clock source group. The present invention achieves the effect that in the scenario where there are two or more bidirectional clock tracking links between two network elements, a clock tracking loop will not be generated.

Abstract translation: 一种用于同步时钟的方法，包括：接收至少两个时钟信号，其中所述至少两个时钟信号由分别对应于其的双向时钟跟踪链路发送; 将来自相同网元的两个或更多个时钟信号设置到相同的时钟源组中; 在与当前跟踪的时钟信号相同的时钟源组中选择一个时钟信号; 并且如果当前跟踪的时钟信号属于时钟源组，则分别发送携带质量等级的备用时钟信号不使用分别对应于时钟源组中的每个时钟信号的双向时钟跟踪链路来使用信息。 本发明实现了在两个网元之间存在两个或更多个双向时钟跟踪链路的情况下，不会产生时钟跟踪循环。