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

Multi-hop time synchronization method based on beacon network

A time synchronization and network technology, applied in the field of communication, can solve the problems of not eliminating the random delay of channel access, useless energy consumption, and accumulation of synchronization errors, so as to improve synchronization accuracy and stability, reduce the number of synchronization hops, and improve accuracy Effect

Active Publication Date: 2021-06-29
CHONGQING UNIV OF POSTS & TELECOMM
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Using the flooding time synchronization method, although the energy consumption is reduced, it does not eliminate the random delay of channel access and the error caused by the timestamp mark. In a multi-hop network, redundant synchronization paths will be generated, resulting in useless energy consumption. , it will also generate multi-hop synchronization error accumulation, which will affect the accuracy

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
  • Multi-hop time synchronization method based on beacon network
  • Multi-hop time synchronization method based on beacon network
  • Multi-hop time synchronization method based on beacon network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] 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.

[0037] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...

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 multi-hop time synchronization method based on a beacon network, and belongs to the technical field of communication. The method comprises the following steps: enabling a sensor node ad hoc network to form a multi-level tree network, adopting a beacon network, and enabling a central coordinator to perform dynamic time slot allocation according to the network scale; marking a timestamp by using hardware, and broadcasting a beacon frame carrying synchronization information in a flooding time synchronization mode; after the node receives the beacon frame, calculating the node quality Q according to the time deviation information and the synchronization hop count information in the beacon of the previous node; when Q meets a certain relation, selecting the Q for synchronization; estimating phase offset and frequency offset through least square linear regression; after the synchronization is completed, broadcasting a beacon frame in a time slot specified by the CCO. According to the invention, uncertain time delay generated by channel access and system data queuing is eliminated, network conflicts are avoided, synchronous redundant paths are reduced, energy consumption is reduced, the average hop count of multi-level synchronization is reduced, and synchronization precision and stability are improved.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a multi-hop time synchronization method based on a beacon network. Background technique [0002] A wireless sensor network consists of multiple sensor nodes capable of transmitting the data they acquire from the environment to a base station. Due to their inherent characteristics, such as limited energy resources, storage resources, computing resources, and bandwidth, the design of wireless sensor network protocols and algorithms is usually subject to very strict constraints. [0003] High-precision time synchronization is crucial for the stable operation and collaboration of wireless sensor networks. More and more applications need to use sensor networks and deploy them in various environments, and the application scenarios are gradually developing towards large-scale, dense, multi-hop networks that require real-time communication. However, most of them It is a resource-co...

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): H04W4/06H04W56/00H04W72/04
CPCH04W4/06H04W56/00H04W72/0446Y02D30/70
Inventor 苏法通董彬叶俊杰
Owner CHONGQING UNIV OF POSTS & TELECOMM
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