Wireless signal interference monitoring method, system and device

Abstract

The invention discloses a wireless signal interference monitoring method, system and device, and the method comprises the steps: receiving a radio frequency signal through a high-gain full-band antenna; dividing the radio frequency signal into a plurality of narrow band signals corresponding to the pass bands of band-pass filters through the band-pass filters, wherein the central frequencies of the band-pass filter are uniformly distributed from the low to the high, and are in pass-band seamless connection; generating corresponding narrow band spectrum data after I / Q signal conversion, FFT processing and time identification processing, synthesizing the data to form a full-band spectrum, and storing the full-band spectrum in a computer platform. When there is a testing result abnormality ina production testing process, the corresponding spectrum data is extracted according to the testing time, and is used for the backspacing analysis of the signal interference during testing. The method achieves the real-time monitoring and analysis of the interference signal through the full-band spectrum formed by the synthesizing of the narrow band spectrums, effectively solves a problem of real-time monitoring and analysis of an interference signal in a production line test in real time, improves the accuracy of a testing result, and reduces the production cost.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a method, system and device for monitoring wireless signal interference. Background technique [0002] The testing and calibration of radio frequency performance of mobile terminal equipment has become one of the most important links in terminal production testing. In the production test of mobile terminals, because the test environment of the production line is open, most of them cannot achieve complete electromagnetic shielding. It often happens that the RF test is interfered by external signals, so that when the RF module receives / measures signals, Deviations in measurement results occur, which in turn affects the accuracy of test results. [0003] The current smart mobile terminals also include multiple communication modes such as 2G, 3G, 4G, BLUETOOTH, WiFi, etc. These communication modes cover a very wide frequency band from 400MHz to 6GHz. In such a wide fr...

AI Technical Summary

Problems solved by technology

At different times and in different places, there will be different forms of interference characteristics, and for terminals with different hardware configurations, the interference effects will be different, which makes it very difficult to locate these interference signals and affects the accuracy of test results

[0004] In the existing test of radio frequency performance of mobile terminal equipment, shielding equipment is usually used to isolate external interference, but the same shielding equipment cannot be adapted to all test models, and mobile terminals with different hardware configurations and different communication modes need to use different The shielding equipment has low versatility and low test efficiency, and the shielding equipment cannot completely eliminate the interference signal. For the occasional abnormal test results during the test, it is still impossible to quickly determine whether it is caused by the interference signal, which affects the accuracy of the test results. Sexuality, and shielding equipment is expensive, raising production costs

For broadband signal interference detection, high-sensitivity broadband spectrum monitoring equipment can be used to improve the accuracy of test results. However, due to the wide test frequency band and high sensitivity requirements, the price of spectrum monitoring equipment that meets the requirements Very expensive, mostly used in laboratories, not suitable for large-scale deployment in production lines

Therefore, in the prior art, there is a lack of a method and device for real-time monitoring and analysis of broadband signal interference that is applied to production line testing, has low production costs, and has accurate test results.

Images