Method and system for testing wireless interference

Abstract

The invention provides a wireless interference testing method and a wireless interference testing system. According to the wireless interference testing method, the wireless interference testing system is set up, communication links among devices in the wireless interference testing system are established, and accordingly, anti-interference tests for LTE-V2X communication links in a shielded-roomenvironment are realized. The wireless interference testing system comprises a shielded room, an interference unit, a combiner, an emitting unit and a receiving unit, wherein the interference unit, the combiner, the emitting circuit and the receiving unit are located in the shielded room. During wireless interference testing, an emitting terminal and a receiving terminal are arranged in a first shielding box and a second shielding box respectively, so that radiation electromagnetism of the emitting terminal in lab interference tests is prevented from entering the receiving terminal to cause radiation interference, and testing effectiveness and accuracy are improved greatly. In the shielded-room environment, accurately-rationed and parameter-adjustable interference source signals can be realized by a signal generator, so that testing accuracy and reoccurrence degree are improved while testing time is shortened effectively.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and system for testing wireless interference. Background technique [0002] At the beginning of the 21st century, automobile technology and radio technology showed a trend of mutual integration. The proposal of ITS (Intelligent Transportation System, Intelligent Transportation System) realized the information interaction and fusion between vehicles, pedestrians and roadside infrastructure. With the popularity of LTE (Long Term Evolution, long-term evolution) technology, especially LTE-D2D (Long-Term Evolution Device-to-Device, a communication service that supports communication between devices and devices in LTE cellular systems) The formulation of the standard makes it possible to realize direct communication between vehicles, vehicles, and vehicles based on LTE technology, thereby meeting the low-latency, high-reliability communication requirements betwe...

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Problems solved by technology

[0005] However, the setting of the DSRC terminal interference test is an external field test. In the actual test process, it is necessary to set up different types and quantities of interference sources to realize the interference test.

Due to the large number of interference source signals and the attenuation and fading of the interference source itself, it is difficult to quantify the interference signals reaching the interfered device. It takes a lot of test time and manpower to test in all scenarios, so it is impossible to achieve fast , Accurate interference test

[0006] In addition, there are existing blocking interference test methods for TD-SCDMA mobile communication terminals. When the transmitting device at the disturbed end transmits signals, it will generate radiated electromagnetic interference that leaks into space, and the radiated electromagnetic interference signal is transmitted to the receiving end of the disturbed system through space coupling. Affects the validity and accuracy of the received power of the receiving device at the disturbed end, and cannot truly restore the interference test in the laboratory conduction environment

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