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Automobile air interface communication performance test method and system

A technology of communication performance and test system, applied in the field of communication, can solve the problems of complex structure, co-channel interference, and high cost of air interface performance test system

Active Publication Date: 2020-10-23
CHINA ACADEMY OF INFORMATION & COMM
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  • Claims
  • Application Information

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Problems solved by technology

(2) The car runs fast and the Doppler phenomenon is serious
The speed of the car is fast and the communication frequency is high, so it will generate a large Doppler frequency deviation, which will affect the demodulation performance of the OFDM receiver
(3) The structure of the car is complex, and the metal shell will affect the antenna radiation performance; the longer feeder in the car will cause greater signal attenuation
(4) Severe co-channel interference
However, it is difficult to use a small number of channel simulators to generate a large enough test area that can accurately reproduce the external signal propagation environment
According to the classic MIMO OTA theory, the larger the test area constructed, the more channel simulators are needed. Considering that the cost of a single channel simulator is in the millions, the cost of developing a vehicle-oriented air interface performance test system very high

Method used

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  • Automobile air interface communication performance test method and system
  • Automobile air interface communication performance test method and system
  • Automobile air interface communication performance test method and system

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some, not all, embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0024] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of practice in sequences other than those illustrated or des...

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Abstract

The invention provides an automobile air interface communication performance test method and system. According to the method, on the basis of joint channel modeling of a channel simulator and a time-varying amplitude modulation phase modulator, under the condition that channel characteristics such as spatial correlation and time correlation of a theoretical model are met, expansion of channel impact response of multiple or dozens of times of antenna probes is supported, and therefore more antenna probe layouts are supported. According to the method, a larger-range air interface test area can be supported and generated at a lower cost so as to support the air interface performance test of the whole vehicle.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and system for testing the performance of air interface communication of automobiles. Background technique [0002] Automobile intelligent network connection is one of the main directions of the current transportation industry development. Through the information interaction between the car and the surrounding traffic participants, real-time road status information is transmitted, and information input is provided for automatic driving and traffic management, which can effectively improve road safety and efficiency. The Internet of Vehicles technology defines the specific process of information interaction between cars and cars, cars and pedestrians, cars and roadside units, cars and the network, and is the basis for realizing intelligent networking. [0003] The performance of automotive air interface communication in the actual road environment is facing severe ...

Claims

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Application Information

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IPC IPC(8): H04B17/391H04B17/00H04B1/3822H04W92/10
CPCH04B17/3912H04B17/0087H04B1/3822H04W92/10
Inventor 李雷张翔吴翔乔尚兵任宇鑫郭宇航王飞龙刘晓龙潘冲张宇魏贵明徐菲陈凯
Owner CHINA ACADEMY OF INFORMATION & COMM
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