Automotive terminal and communication method based on the same

Abstract

The invention utilizes the layering modulation technology for communication between vehicle and infrastructure (V2I) (the simultaneous transmission of the high end information and low end information) to make all the vehicles decode the high end information having high important degree. When the receiving environment is unsatisfactory due to the remote communication and the existence of a barrier, the vehicles that only decode the high end information will require other vehicles having good receiving environment to transmit the low end information. In addition, with the multi hop relay technology and other communication technologies (V2V) between vehicles, the vehicles that decode both high end information and low end information will be made to transmit low end information only, thus to raise the overall receiving performance.

Description

technical field [0001] The present invention relates to a vehicle terminal and a communication method based on the terminal, in particular to a vehicle terminal and a communication method based on the terminal applied between vehicles and infrastructure such as UTIS roadside base stations. Background technique [0002] figure 1 is a schematic diagram of the communication path in the known communication system between the vehicle and the infrastructure. [0003] according to figure 1 , Ordinary Urban Traffic Information Systems (Urban Traffic Information Systems) are wireless communications between on-board devices (OBE: Onboard Equipment) on the road, and between on-board devices and infrastructure including roadside base stations (RSE: Road Equipment) Wireless communication between vehicles is to send and receive traffic information such as vehicle danger information. It is one of the Intelligent Transport System (ITS) technologies developed in Korea. [0004] In the UT...

AI Technical Summary

Problems solved by technology

[0006] Therefore, regardless of the importance of the information and whether there is a demand for the information, all the information of the infrastructure is uniformly modulated and sent, and the implementation method is unreasonable, which in turn wastes communication resources.

Moreover, in the wireless communication environment, the receiving environment of each vehicle will vary greatly depending on conditions such as distance and channel environment. Therefore, in a wide-range communication field, the information receiving performance of all vehicles cannot be guaranteed.

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