Data transmission method and device

Abstract

The invention relates to a data transmission method and device. The method comprises the steps of obtaining a target sample space, wherein the target sample space comprises sample data of a plurality of position points of a history path of a vehicle, and the sample data of each position point comprises a vehicle azimuth angle of the position point; determining discrete degree of the target sample space according to the vehicle azimuth angles, wherein the discrete degree is used for indicating bending degree of the history path; determining representative position points from the plurality of position points, wherein the representative position points are used for representing the history path of the vehicle; and sending the sample data of the representative position points to a target terminal. In this mode, the motion track of the vehicle can be positioned relatively precisely, the message transmission load can be reduced to the greatest extent, the packet loss problem resulting from message collision can be avoided, the realization of an upper layer application set can be supported well, and the secure driving between vehicles can be ensured to the greatest extent.

Description

technical field [0001] The present disclosure relates to the field of Internet of Vehicles, and in particular, to a data transmission method and device. Background technique [0002] With the rapid development of social economy, the number of motor vehicles has increased sharply. While private cars have brought people faster efficiency and a more comfortable driving environment, they have also caused many problems, such as traffic accidents, traffic jams and other traffic problems. It brings huge economic and spiritual losses to human life, so how to reduce the occurrence of traffic accidents has become an important topic of traffic safety in the world today. [0003] During the driving process of vehicles, due to the influence of traffic environment, weather and other factors and the limited reaction ability of drivers, traffic accidents increase, and many existing risk factors of traffic accidents cannot be effectively overcome by regulating driver behavior. In the past t...

AI Technical Summary

Problems solved by technology

However, in actual message transmission, if a relatively small number of points is selected, for complex road conditions (such as curves), a small number of points cannot accurately describe the historical trajectory information, and it will be difficult for applications that need to make judgments based on historical paths. The scene brings inconvenience; on the contrary, if the most points are used to describe, this will increase the message load virtually and increase the network burden, especially in the environment with high network node density, it will increase the collision of messages and reduce the number of messages between nodes. The success rate of communication will affect the real-time judgment of scenes such as collision between V2V

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