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Method, device and system for communication between vehicle-mounted terminal and roadside equipment

A technology of roadside equipment and vehicle terminal, applied in the field of intelligent traffic management and Internet of Vehicles, can solve the problems of communication interruption, RSU unable to receive, communication information unable to be received correctly and in time, etc., to achieve the effect of ensuring reliability

Active Publication Date: 2022-04-01
睿鑫科技(天津)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This unequal transmission power between OBU and RSU may lead to the situation that OBU can receive information from RSU, but RSU cannot receive information uploaded by OBU
[0004] It can be seen that when short-distance wireless communication is used for communication between OBU and RSU, there is a possibility that the communication information cannot be received correctly and in time, and the communication may even be interrupted due to the inability to receive information correctly. The quality of communication between OBU and RSU It cannot be effectively guaranteed, and the current short-distance wireless communication method has no effective means to solve this situation

Method used

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  • Method, device and system for communication between vehicle-mounted terminal and roadside equipment
  • Method, device and system for communication between vehicle-mounted terminal and roadside equipment
  • Method, device and system for communication between vehicle-mounted terminal and roadside equipment

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Effect test

Embodiment 1

[0072] Embodiment 1 of the present application provides a method for communication between a vehicle-mounted terminal and a roadside device, the process of which is as follows figure 1 As shown, its realization principle is as follows figure 2 shown, including the following steps:

[0073] Step S101: the OBU receives the broadcast channel signal sent by the RSU.

[0074] As a base station, the RSU will continue to send broadcast channel signals, broadcast pilot information and control information and other broadcast messages. When the OBU enters the coverage of the RSU, it will receive the pilot information and control information that the RSU continues to send on the broadcast channel.

[0075] Such as figure 2 As shown, in the communication system between the vehicle-mounted terminal and the roadside equipment, the RSU is provided with a main control module, a short-distance communication module (DSRC communication module), and a long-distance communication module. The O...

Embodiment 2

[0143] Embodiment 2 of the present application provides a communication method between the vehicle-mounted terminal OBU and the roadside equipment RSU, the process of which is as follows Figure 6 As shown, the difference between this method and Embodiment 1 is that when the communication is completed, the OBU can enter the silent state according to the stop command of the RSU, so as to save channel resources and realize first-come optimization. The method comprises the steps of:

[0144] Step S601-Step S604 are as Step S101-Step S104, which will not be repeated here.

[0145] Step 605: After receiving the stop command sent by the RSU, the OBU enters a silent state until it receives a new communication request from the RSU.

[0146] After the communication is completed, the RSU sends a stop command to the OBU, and the OBU enters a silent state after receiving the stop command, and no longer actively sends and receives other information until it receives a new communication re...

Embodiment 3

[0148] Based on the same inventive concept, the embodiment of the present application also provides a communication system between vehicle-mounted terminal OBU and roadside equipment RSU. Intelligent traffic management. In addition, the system can also be applied to intelligent application management in the transportation industry, insurance industry and related industries to maximize social efficiency and benefits. The structure of the system is as Figure 7 As shown, it includes: a vehicle terminal 701 and a roadside device 702 .

[0149] The vehicle-mounted terminal 701 is used to receive the broadcast channel signal sent by the roadside equipment; obtain the signal parameters of the received signal, and determine whether the short-distance communication requirements are met according to the signal parameters and the set signal switching threshold; adopt the short-distance wireless communication mode Or long-distance wireless communication to communicate with roadside equ...

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Abstract

The present application discloses a method, device and system for communication between a vehicle-mounted terminal and roadside equipment. The method includes: the on-board terminal OBU receives the broadcast channel signal sent by the roadside equipment RSU; the OBU obtains the signal parameters of the received signal, and determines whether the short-distance communication requirements are met according to the signal parameters and the set signal switching threshold; if so, Use the short-distance wireless communication method to communicate with the RSU; if not, switch to the long-distance wireless communication method to communicate with the RSU. It can effectively solve the possible communication failure situation caused by the unequal transmission frequency between OBU and RSU, improve the reliability of communication information exchange between the two and ensure the timeliness of communication.

Description

technical field [0001] The present application relates to the fields of intelligent traffic management and Internet of Vehicles, and in particular to a method, device and system for communication between a vehicle-mounted terminal and roadside equipment. Background technique [0002] With the development of intelligent transportation and Internet of Vehicles, the vehicle management system is more and more widely used. The vehicle-mounted terminal (or On Board Unit, OBU) in the vehicle management system is set on the vehicle as a mobile terminal. The equipment (or road side unit, Road Side Unit, RSU) is used as a base station equipment and is installed on the side of the road. The OBU and the RSU can communicate to realize information exchange. [0003] At present, the communication between the OBU and the RSU generally adopts a dedicated short-range wireless communication (Dedicated Short Range Communication, DSRC) technology for communication. When the OBU enters the covera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/44H04W36/00H04W36/14H04W36/30
CPCH04W36/0083H04W36/14H04W36/30
Inventor 张丰津杜光政许雪峰张延华李萌
Owner 睿鑫科技(天津)有限公司
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