METHOD, SLAVE CLOCK NODE AND SYSTEM FOR SELECTING MASTER CLOCK NODE BASED ON PRECISION TIME PROTOCOL (PTP) AND LINK QUALITY

摘要

The present invention discloses a method for selecting a master clock node based on a precision time protocol (PTP) and link quality. The method includes the following steps: configuring a link quality selection policy according to a link quality index, wherein the link quality index comprises link packet loss ratio, and/or time delay jitter and/or link time delay; selecting a target master clock node according to the configured link quality selection policy. The present invention also discloses a slave clock node and system for selecting a master clock node based on a PTP and link quality. The present invention not only satisfies the actual selection requirement of a user, but also improves the multi-selectivity and flexibility of obtaining the master clock node, and solves the problem that in traditional private telephonic network (PTN) a master clock node can not be selected when the master clock node does not send a notification message.