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Adaptive Feedback Control Method for Basic Safety Messages in Cooperative Vehicle Safety System

A basic safety message and safety system technology, which is applied in the field of adaptive feedback control of basic safety messages in a collaborative vehicle safety system, can solve problems such as untenable statements and reduced tracking accuracy, so as to improve robustness and real-time vehicle tracking The effect of precision

Active Publication Date: 2021-11-23
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, in VANETs with limited channel capacity (10MHz for CCH) this statement does not hold
Moreover, in CVSSs, limited channel capacity, interference from hidden terminals, and channel fading can adversely affect IDR, thereby reducing tracking accuracy

Method used

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  • Adaptive Feedback Control Method for Basic Safety Messages in Cooperative Vehicle Safety System
  • Adaptive Feedback Control Method for Basic Safety Messages in Cooperative Vehicle Safety System
  • Adaptive Feedback Control Method for Basic Safety Messages in Cooperative Vehicle Safety System

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Embodiment Construction

[0046] In the following, the technical solutions in the embodiments of the invention will be clearly and completely described in combination with relevant data and charts of the invention.

[0047] A method for adaptive feedback control of basic safety messages in a coordinated vehicle safety system, wherein all vehicles in the coordinated vehicle safety system have the ability to wirelessly send and receive messages, and the method includes the following steps:

[0048] 1) Each vehicle periodically broadcasts Basic Safety Message (BSM) data packets. We equip each vehicle with an on-board unit. Each vehicle unit is a communication device using IEEE 802.11p wireless technology for V2V communication. The BSM is transmitted on a shared channel (also known as the Control Channel (CCH)) in IEEE 802.11p. Each vehicle knows its position, speed and direction through the installed Global Positioning System (GPS). In active safety systems, vehicles need to know the status of their ne...

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Abstract

The invention discloses an adaptive feedback control method of Basic Safety Message (BSM) in Cooperative Vehicle Safety System (Cooperative Vehicle Safety System, CVSSs). situation, hide the impact of the terminal and the channel bit error rate, and calculate the information dissemination rate (Information Dissemination Rate, IDR) to provide the basis for the prediction model; use the prediction model to give the idealized network performance, and the ideal network state is regarded as To obtain the maximum IDR, the ideal IDR is used as a benchmark to guide the BSM rate adaptive feedback control; the feedback rate control model is used to make the error between the ideal IDR and the actual IDR converge to zero. Compared with the prior art, the present invention fully considers the factors that adversely affect IDR, can improve the real-time vehicle tracking accuracy in different vehicle networking environments and network environments, and improve the robustness of CVSSs under different interference effects.

Description

technical field [0001] The invention relates to the technical field of Internet of Vehicles communication, in particular to an adaptive feedback control method for basic safety messages in a cooperative vehicle safety system. Background technique [0002] Vehicular Ad Hoc Networks (VANETs) are considered to be an important part of Intelligent Transportation System (ITS). Its goal is to improve road safety. VANETs improve road safety through vehicle-to-vehicle (V2V) communication, providing various active safety applications, such as cooperative collision warning, electronic emergency braking, etc., collision warning and overtaking warning, etc. However, these active safety applications require each vehicle to have a good estimate of the location and status of surrounding vehicles. These messages are regularly broadcast on the shared channel through Basic Security Messages (BSM). Vehicles use BSM to detect possible collisions and warn the driver. This concept is called Co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/06H04W4/46H04W24/06H04W4/029H04L1/16
CPCH04L1/1607H04W4/06H04W24/06H04W4/029H04W4/46
Inventor 宋彩霞高春奇张宇田坤宋笑笑
Owner QINGDAO AGRI UNIV
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