Method, device and system for processing clock message

A technology for processing time and message, applied in the field of communication, can solve the problems of large clock error, unimplemented, and the routing node cannot recognize PTP message, etc., to achieve the effect of improving clock accuracy

Inactive Publication Date: 2012-03-14
HUAWEI TECH CO LTD
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Problems solved by technology

[0007] The inventors have found that at least the following problems exist in the prior art: when a PTP message encapsulated by UDP passes through an IP tunnel, the passing routing node cannot recognize that the message is encapsulated with a PTP message, and cannot respond to the PTP message. As a result, the PTP protocol is only implemented on both sides of the tunnel, but not in the middle of the tunnel, which introduces a large clock error

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  • Method, device and system for processing clock message
  • Method, device and system for processing clock message
  • Method, device and system for processing clock message

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[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0036] First, briefly introduce the terms that may be involved in the embodiments of the present invention:

[0037] PTP: Precision Time Protocol, precision clock protocol, a clock protocol defined in IEEE1588v2.

[0038] OC: Ordinary Clock, ordinary clock, specifically refers to a clock with only one interface in PTP.

[0039] Master Clock: The...

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Abstract

The invention provides a method, a device and a system for processing a clock message. The method comprises: packaging the clock message in an IPv6 (internet protocol version 6) hop-by-hop option; and sending the packaged clock message. According to the technical scheme provided by the invention embodiment, the clock precision of synchronization can be improved according to the clock message.

Description

technical field [0001] The present invention relates to communication technology, in particular to a method, device and system for processing clock messages. Background technique [0002] For scenarios with high requirements for clock synchronization and frequency synchronization, the Precision Time Protocol (PrecisionTime Protocol, PTP) can provide a better solution. The PTP message includes a processing time correction field (correctionField), and each node adds the processing time of the PTP message of its own node to the processing time correction field when the PTP message passes. The processing time on each node is the difference between the time when the PTP message leaves this node and the time when it enters this node. The slave clock node (slave) can realize synchronization with the master clock node (master) according to the time recorded in the processing time correction field and other related times. [0003] Clock messages are divided into general (general) c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/12H04L29/06
CPCH04J3/0673H04J3/0667H04L69/16
Inventor 王江胜赖志昌常锁林
Owner HUAWEI TECH CO LTD
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