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

A network path delay measurement method and device and a time synchronization system

A measurement method and network path technology, applied in the field of electronics and communication, can solve problems such as operating system call delay uncertainty, large measurement errors, and affecting the accuracy of time synchronization, and achieve the effects of improving time accuracy, wide application, and improving performance

Active Publication Date: 2019-05-28
西安电子科技大学工程技术研究院有限公司
View PDF2 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the implementation of this protocol usually encounters a serious problem: the path delay measurement is easily affected by the uncertainty of the operating system call delay, resulting in large measurement errors, thereby affecting the accuracy of time synchronization

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
  • A network path delay measurement method and device and a time synchronization system
  • A network path delay measurement method and device and a time synchronization system
  • A network path delay measurement method and device and a time synchronization system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] See figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , figure 1 A schematic flowchart of a network path delay measurement method provided by an embodiment of the present invention; figure 2 It is a schematic structural diagram of a first state machine and a second state machine in a network path delay measurement method provided by an embodiment of the present invention; image 3 A schematic diagram of the state transition of the first state machine in a network path delay measurement method provided by an embodiment of the present invention; Figure 4 A schematic diagram of state transitions of another first state machine in a method for measuring network path delay provided by an embodiment of the present invention; Figure 5 A schematic diagram of the state transition of the second state machine in a network path delay measurement method provided by an embodiment of the present invention; Image 6 It is a schematic diagram of state transiti...

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 relates to a network path delay measurement method and device and a time synchronization system. The method includes: obtaining triggering data; Obtaining a preset state machine information table; Acquiring a state machine from the preset state machine information table according to the trigger data, and generating feedback information according to the state machine; Queuing the feedback information in a task queue to obtain a queuing result, and detecting the queuing result according to preset time to obtain a detection result; And performing state processing on the state machine according to the detection result to obtain a timestamp, and calculating path delay measurement data according to the timestamp. According to the invention, through task timing queue scheduling, states of all state machines in delay measurement are jumped to the interface in a unified manner; and a task timer is started in any timing service queue for timing processing, so that the uncertainty of system call delay is reduced, the execution efficiency of the system is finally improved, and the time precision of path delay measurement and time synchronization is improved.

Description

technical field [0001] The invention belongs to the field of electronics and communication, and in particular relates to a method for measuring network path delay, a device thereof and a time synchronization system. Background technique [0002] With the application of multimedia entertainment systems and assisted driving systems, a large amount of time-sensitive message data such as audio and video needs to be transmitted through Ethernet, which puts forward higher requirements for time synchronization of time-sensitive networks. [0003] Time synchronization technology can reduce the impact of clock jitter and transmission delay by calibrating the time of each transmission node to a smaller range, thereby improving the transmission quality of the network, which is the key to realizing high-definition audio and video and real-time data transmission technology. The IEEE802.1AS time synchronization protocol formulated by the IEEE802.1 working group, IEEE802.1AS defines a gen...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04J3/06
Inventor 王华林赵玉娟郭栋吕宁殷廷瑞陈晨
Owner 西安电子科技大学工程技术研究院有限公司
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