Method and device for searching wireless electromagnetic ambient interference on high speed railway

Abstract

The embodiment of the invention provides a method and device for searching wireless electromagnetic ambient interferences on a high speed railway. The method comprises following steps: when co-channel interferences are detected, checking the frequency of the first frequency band of a public mobile communication network; quitting the first range frequency points in the public mobile communication network out of the network; when adjacent channel interferences are detected, indicating to replace a broadband analog repeater by a digital optical fiber and replace a broadband duplexer by a narrowband duplexer; when intermodulation interferences are detected, indicating to improve non-high speed railway frequency points so as to prevent intermodulation signals from falling on a railway GSM (Global System for Mobile Communications)-R frequency band, or indicating to mount a band-pass filter so as to suppress the intermodulation signals; when stray interferences are detected, indicating to reduce the transmitting power of a base station and mount the band-pass filter at the base station; when blocking interferences are detected, indicating to improve the non-high speed railway frequency points or indicating to reduce the power of the base station and add the band-pass filter at a receiving end. In adoption of the method and the device provided by the invention, the operation stability of the railway GSM-R system is ensured.

Description

technical field [0001] The invention relates to the field of wireless technology communication, in particular to a method and a device for searching wireless electromagnetic environment interference of high-speed railways. Background technique [0002] The Enhanced Global System for Mobile Communications (EGSM, Enhanced Global System for Mobile Communications) frequency around the high-speed railway and the third-order intermodulation products generated by the frequency of the existing network will increase the noise floor of the railway dedicated mobile communication network (GSM-R) system. [0003] Railway-specific mobile communication network (GSM-R) is a digital wireless communication network specially developed for railway applications based on the Global System for Mobile Communications (GSM) platform. As an important driving force of railway informatization, GSM-R has the characteristics of complete functions, reliable transmission, flexible exchange and large capacit...

AI Technical Summary

Problems solved by technology

[0014] The existing technology has the following problems: the GSM-R wireless communication system is the core technology to ensure the safety of high-speed rail train transportation, and the interference between GSM-R networks involves high-speed rail and property safety. If a failure occurs, it will cause confusion in the railway system and may even cause safety problems ACCIDENT

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