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Method, node and system for detecting clock synchronization path

A clock synchronization and node technology, applied in the field of mobile communication, can solve problems such as low efficiency and asynchronous clocks

Active Publication Date: 2017-05-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, it is inefficient to manually analyze the clock synchronization signals of the two connected devices to determine whether there is a problem of clock asynchrony, and / or manually analyze the faulty nodes on the clock synchronization path.

Method used

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  • Method, node and system for detecting clock synchronization path
  • Method, node and system for detecting clock synchronization path
  • Method, node and system for detecting clock synchronization path

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0158] Embodiments of the present invention provide a method, node, and system for detecting clock synchronization paths, which can be applied to mobile bearer networks, such as packet switching networks (Packet Transport Network, PTN), wireless access network IP (Internet Protocol Radio Access Network, IP RAN) and other bearer networks can also be applied to scenarios where clocks are not synchronized between nodes.

[0159] Such as figure 1 As shown, R1-R9 are network nodes in a certain mobile bearer network. The network node may include but not limited to transmission equipment, wireless network control equipment, base station control equipment, wireless core network equipment and other equipment. The transmission device may be a switch, a router, a Packet Transport Network (PTN) device, and the like. figure 1 Among them, the BTS obtains the time and frequency synchronization signals from R5 respectively through the Pulse Per Second (1PPS) + Time Of Day (TOD) interface, t...

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PUM

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Abstract

The invention provides a method, a node and a system for detecting a clock synchronization path, wherein the method comprises the following steps of generating synchronous detection request information by a first node, and transmitting the synchronous detection request information to a second node, wherein the synchronous detection request information comprises an identifier ID of the first node; generating synchronous detection response information by a second node according to the synchronous detection request information, and transmitting the synchronous detection response information to the first node, wherein the synchronous detection response information comprises clock topology information of the second node and ID of the first node; and obtaining a first detection result by the first node according to the synchronous detection response information, wherein the first detection result is used for representing state of the clock synchronization path between the first node and the second node. The method, the node and the system can improve working efficiency in acquiring state of the clock synchronization path.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method, node and system for detecting a clock synchronization path. Background technique [0002] In modern communication networks, the normal operation of most telecommunication services requires that the frequency or phase difference between the devices on the entire network be kept within a reasonable error level, which is the requirement of network clock synchronization. Clock synchronization includes frequency synchronization and phase synchronization. Frequency synchronization means that the frequency or phase between signals maintains a strict specific relationship, that is, the phase difference between signals is kept constant within a small range, such as less than 100 nanoseconds. Currently, the main clock synchronization technologies include IEEE 1588v2 and Synchronous Ethernet (Sync E). Synchronous Ethernet is used to achieve frequency synchronization...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04W24/04H04L45/02H04L45/42
CPCH04J3/0641H04J3/0688H04J3/0697H04W24/04H04L41/12H04W56/00H04J3/0679H04L45/02H04W56/001H04W56/0035H04J3/06H04W84/00H04L45/42H04J3/0673H04L41/0681H04L43/10
Inventor 江元龙徐金春刘娴
Owner HUAWEI TECH CO LTD