Hybrid clock synchronization method based on timestamp-free interaction and unidirectional message propagation

A clock synchronization and time stamping technology, which is applied in the direction of synchronization devices, time division multiplexing systems, electrical components, etc., can solve the problems of inability to accurately distinguish clock phase offsets and fixed delays in data packet transmission, and achieve improved estimation performance Effect

Active Publication Date: 2020-08-18
CHONGQING UNIV OF POSTS & TELECOMM
View PDF13 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the one-way message propagation synchronization method, although it can be executed in parallel with the broadcast mechanism, it is impossible to accu...

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
  • Hybrid clock synchronization method based on timestamp-free interaction and unidirectional message propagation
  • Hybrid clock synchronization method based on timestamp-free interaction and unidirectional message propagation
  • Hybrid clock synchronization method based on timestamp-free interaction and unidirectional message propagation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0032] see Figure 1 ~ Figure 4 , figure 1 It is a schematic diagram of a hybrid synchronization model according to an embodiment of the present invention, ...

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 hybrid clock synchronization method based on timestamp-free interaction and unidirectional message propagation, and belongs to the technical field of wireless sensor networks. The method can be executed simultaneously with a broadcast mechanism according to a one-way message propagation synchronization mode. The timestamp-free interactive synchronization can implicitly acquire synchronization information in a network data stream, and the method performs joint design and optimization on a timestamp-free interactive synchronization mechanism and a unidirectional message propagation mechanism, so that seamless fusion of a time synchronization function and an actual wireless sensor network is realized. According to the method, the joint estimation of clock frequencyoffset, phase offset and fixed time delay can be realized without carrying out synchronization information transmission by a special synchronization message, the node synchronization communication overhead is effectively reduced, and the clock phase offset estimation performance is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor networks, and relates to a hybrid clock synchronization method based on time stamp-free interaction and one-way message propagation. Background technique [0002] From the perspective of statistical signal processing, the time synchronization problem in wireless sensor networks can be regarded as a parameter estimation problem for clock frequency offset and clock phase offset. However, if we only pay attention to the acquisition of the clock phase offset parameters without estimating the clock frequency offset, the existence of the clock frequency offset will lead to the deviation of the node clock again, and the clock deviation will continue to accumulate, and even affect the life cycle of the sensor network . In order to maintain the synchronization accuracy between nodes, it is necessary to perform resynchronization operations periodically, but frequent synchronization process will bri...

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): H04W56/00H04J3/06
CPCH04J3/0638H04J3/0661H04J3/0682H04W56/001H04W56/0035H04W56/004
Inventor 王恒余斐彭政岑
Owner CHONGQING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap