Single-hop cooperative broadcasting method for safety message of Internet of Vehicles based on hidden Markov model

A hidden Markov and security message technology, applied in the field of Internet of Vehicles, can solve the problems of poor pertinence and low accuracy of cooperative retransmission

Active Publication Date: 2019-03-15
XIAMEN UNIV
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing technology has introduced cooperative retransmission into the single-hop broadcast method to resist the decline in the reception success rate caused by the fading of the wireless

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
  • Single-hop cooperative broadcasting method for safety message of Internet of Vehicles based on hidden Markov model
  • Single-hop cooperative broadcasting method for safety message of Internet of Vehicles based on hidden Markov model
  • Single-hop cooperative broadcasting method for safety message of Internet of Vehicles based on hidden Markov model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0048] Such as figure 1 As shown, on a highway with L lanes, each vehicle has a unique ID and the same communication radius R T . If the distance between the two cars is less than R T , then they can communicate directly and become neighbor nodes of each other; if two vehicles cannot communicate directly but can communicate with each other through an intermediate node, then they are two-hop neighbor nodes. Each vehicle is equipped with a GPS information receiver. With the assistance of the GPS signal, the clock of each vehicle can be precisely synchronized. Even if the GPS signal is temporarily lost, the oscillator on the GPS receiver can still provide a synchronization signal. Such as figure 2 As shown, the access channel is divided into cont...

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 single-hop cooperative broadcasting method for a safety message of Internet of Vehicles based on a hidden Markov model, and belongs to the field of Internet of Vehicles. A receiving success rate of collaborative rebroadcasting is further improved by improving the prediction accuracy of an initialized broadcasting result. The method comprises the following steps of firstly, predicting a channel state by utilizing a received power sequence; secondly, carrying out initialized broadcasting; thirdly, selecting an optimal cooperative node according to an overlap ratio of the transmission range of each alternative node and a predicted failure node set; and finally, carrying out collaborative rebroadcasting, and making the selected cooperative node and a source node retransmit a data packet in a time slot of the source node. The hidden Markov model is introduced into the cooperative broadcasting method, so that the prediction accuracy of the initialized broadcasting result is improved, and thus the more targeted cooperative node can be selected for cooperative rebroadcasting, and the receiving success rate can be further improved.

Description

technical field [0001] The invention belongs to the field of Internet of Vehicles, in particular to a method for single-hop cooperative broadcasting of safety messages of Internet of Vehicles based on a hidden Markov model. Background technique [0002] In order to solve the increasingly serious traffic congestion, frequent accidents and other problems, the Internet of Vehicles has emerged as the times require, and has become the focus of common attention of governments, domestic and foreign universities and major companies. Through various sensors and communication modules installed on the vehicle, the vehicle can not only perceive the surrounding things, but also share information with other surrounding vehicles, pedestrians and infrastructure. The Internet of Vehicles can provide a variety of services. Generally speaking, these services can be divided into the following three categories: (1) safety applications (such as: collision warning, blind spot warning, and change a...

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): H04W4/06H04W28/04H04W40/12H04W40/18H04W40/22H04B7/026
CPCH04B7/026H04W4/06H04W28/04H04W40/12H04W40/18H04W40/22
Inventor 杨帆罗雄彪
Owner XIAMEN UNIV
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