Method and device for collecting traffic flow information based on LTE-V communication

Abstract

The invention provides an LTE-V communication-based traffic flow information acquisition method and device. The traffic flow information acquisition method comprises the steps of acquiring a communication request sent by a vehicle-mounted unit in a vehicle by an LTE-V base station in real time, wherein the communication request comprises vehicle driving state information of a corresponding vehicle; if the corresponding vehicle is judged to be in an acquisition road section of the LTE-V base station according to the vehicle driving state information, storing the vehicle driving state information; and if the current acquisition time length is equal to a preset sampling period, generating traffic flow information of the current acquisition road section according to all the stored vehicle driving state information. Compared with DSRC communication, the method saves the high cost of mounting road test equipment, is capable of reporting driving state information of vehicles in real time so as to satisfy the timeliness requirement of traffic information acquisition, and is capable of acquiring road condition information of different road sections in communication ranges of base stations and directly outputting and uploading results so as to improve the data processing efficiency.

Description

technical field [0001] The present invention relates to the technical field of data transmission, in particular to a method and device for collecting traffic flow information based on LTE-V communication. Background technique [0002] Traffic flow information, as the basis for decision-making to control traffic congestion, and the data support of urban traffic scheduling and route guidance, plays a vital role in urban traffic management. Therefore, how to obtain real-time and accurate traffic data information is the key to solving traffic congestion. the crux of the matter. However, with the rapid increase in the number of motor vehicles, the problem of urban road congestion has become increasingly prominent. Traditional road information collection methods such as: floating car road condition collection, sensor coils, video detection and infrared detection, etc., whether in terms of real-time reliability of data or In terms of construction cost and installation and maintena...

AI Technical Summary

Problems solved by technology

[0004] Then, the above-mentioned method has the following problems: the Bluetooth device is a point-to-point communication mode, and the communication speed is slow compared to DSRC or 4G. The data is inaccurate, and the invention can only collect traffic flow data; the realization method based on ETC and DSRC communication requires a large amount of drive test equipment and the cost is high; the method based on ETC equipment can only collect information on fixed road sections, and when the speed When it is too high, the communication performance between the road test equipment and the vehicle unit will deteriorate, and the accuracy will decrease; with the DSRC communication method, multiple drive test equipment will easily transmit the location information of the same vehicle to the data processing center, resulting in data redundancy

Images