Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Device and method for realizing time synchronization on Ethernet switch

A time synchronization, Ethernet technology, applied in the field of network switches, can solve the problems of high cost and limited transmission distance, and achieve the effect of low cost and improved time synchronization accuracy

Inactive Publication Date: 2012-04-04
SUZHOU CENTEC COMM CO LTD
View PDF6 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, whether it is NTP or IRIG-B code, its synchronization accuracy can only reach the millisecond level, and the cost is often high and the transmission distance is limited

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device and method for realizing time synchronization on Ethernet switch
  • Device and method for realizing time synchronization on Ethernet switch
  • Device and method for realizing time synchronization on Ethernet switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

[0036] Such as figure 2 As shown, in a specific embodiment of the present invention, in order to achieve the purpose of time synchronization, a device for realizing time synchronization on an Ethernet switch is provided, including: a central processing unit (CPU) module 101, a switch (Switch) module 102 . A physical (PHY) module 103 and a clock processing module 104 .

[0037] Among them, the Switch module: it may include ports (1, 2...N), respectively connected to N physical (PHY) modules to realize communication with them. The Switch module is mainly used to identify the IEEE1588 message and extra...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method and a device for realizing time synchronization on an Ethernet switch. The device comprises a Switch module, a plurality of PHY (Physical layer) modules, a CPU module and a clock processing module, wherein the clock processing module comprises a clock synchronization sub-module and a clock production sub-module. The clock can be synchronized according to the clock provided by the PHY module through adopting the time delay measuring technology provided by the synchronic Ethernet (SyncE, SynchronousEthernet) protocol and the IEEE1588 protocol, then the reference input clock needed by the relative modules in the system can be produced, and the frequencies of the main device and the auxiliary device are synchronized. Because of adopting the PHY chip with SyncE function, the frequency synchronization precision is very high, which can reach nanosecond level.

Description

technical field [0001] The invention relates to network switch technology, in particular to a device and method for realizing nanosecond-level precision time synchronization on an Ethernet switch. Background technique [0002] In an industrial network, it is often required that different devices of the network are in a synchronous state, and under this condition, the communication between devices is coordinated. At present, Ethernet networking technology is one of the fastest growing technologies in the industrial market. Therefore, realizing time synchronization on industrial Ethernet switches can well meet the development needs of current industrial networks. [0003] Now some industrial switches use Network Time Protocol (NTP, Network Time Protocol) and IRIG-B codes for time synchronization. Among them, NTP is a standard protocol for time synchronization in the Internet. It adopts statistics and probability theory. Information from different time servers is screened to o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04L7/00H04L12/56
Inventor 李庆山秦立峰
Owner SUZHOU CENTEC COMM CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com