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A method for ensuring real-time information of emergency events in the Internet of Vehicles

A technology for emergencies and Internet of Vehicles, which is applied to branch offices to provide special service devices, electrical components, and climate sustainability. It can solve problems such as driving safety hazards, affecting original itineraries, and wrong driving decisions, so as to ensure reliability. , the effect of improving reliability and reducing possibility

Inactive Publication Date: 2017-07-14
SUZHOU INST FOR ADVANCED STUDY USTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After a few minutes, the emergency was lifted and the traffic order was restored. However, within a period of time, the message still existed widely in the network. Vehicles V3 and V4 would make wrong driving decisions (such as avoiding danger) after receiving the message of losing real-time detour, emergency braking, etc.), may affect the original itinerary, and even cause a crash
It can be seen that the emergency message transmission mechanism commonly used at present will bring risk factors to driving safety, so the technology to ensure the real-time emergency message is an important topic in road safety research

Method used

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  • A method for ensuring real-time information of emergency events in the Internet of Vehicles
  • A method for ensuring real-time information of emergency events in the Internet of Vehicles
  • A method for ensuring real-time information of emergency events in the Internet of Vehicles

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Experimental program
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Embodiment

[0033] The symbols involved in this embodiment have the following meanings:

[0034] level0_msg: low priority message;

[0035] level1_msg: high priority message;

[0036] Credit(msg, t): measure the credibility of the emergency message msg at time t;

[0037] Credit min : Lower bound of credibility, messages below this value will be considered expired messages;

[0038] Credit thres : level0_msg is upgraded to the confidence threshold of level1_msg;

[0039] Credit demotion : level1_msg is downgraded to the confidence threshold of level0_msg;

[0040] Set_Level0: A collection of the same event level0_msg.

[0041] Among them, the size relationship of the above three thresholds is:

[0042] Credit thres >Credit demotion >Credit min .

[0043] Such as Figure 2-4 As shown, a method for ensuring real-time emergency message for the Internet of Vehicles, the message source generates a high-priority message level1_msg and a low-priority message level0_msg according to ...

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Abstract

The invention belongs to the application field of vehicle-network vehicle-vehicle communication, and in particular relates to a method for ensuring real-time emergency message oriented to the vehicle network. The present invention is based on the aggregation of multiple low-credibility messages, and then broadcasts to the outside after meeting certain conditions, and at the same time screens out expired and untrustworthy messages to ensure the real-time nature of emergency messages, and ensure that emergency messages can be disseminated At the same time, it uses a small communication cost and calculation overhead, reduces the energy consumption and network overhead of the on-board unit, and ensures the real-time reliability of the message, providing a simple and effective assisted driving safety mechanism for the Internet of Vehicles Methods and strategies to ensure real-time emergency information.

Description

technical field [0001] The invention belongs to the field of vehicle-to-vehicle communication of the Internet of Vehicles, and in particular relates to a method for ensuring real-time emergency message for the Internet of Vehicles. Background technique [0002] In the Vehicular Ad-hoc Network (VANET), high-speed moving vehicles share traffic information in real time through a wireless ad-hoc network to improve driving safety. Traditional traffic safety-related applications often adopt a simple periodic sending mechanism when sharing emergency event messages, that is, periodically send relevant messages within a period of time when an event occurs and is detected. On the one hand, this method may cause broadcast storms, and on the other hand On the one hand, insufficient consideration is given to the real-time nature of the message, which will not only waste communication resources and affect the dissemination of other messages, but also cause the receiver to make wrong drivi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/865H04L12/18H04L47/6275
CPCY02D30/50
Inventor 黄刘生李刚金锷徐宏力
Owner SUZHOU INST FOR ADVANCED STUDY USTC
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