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

A high-speed railway and radio technology, applied in the field of wireless technology communication, can solve problems such as safety accidents and railway system chaos, and achieve the effect of ensuring operation and eliminating co-frequency interference

Active Publication Date: 2016-06-08
CHINA MOBILE GROUP ZHEJIANG +1
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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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  • Method and device for searching wireless electromagnetic ambient interference on high speed railway
  • Method and device for searching wireless electromagnetic ambient interference on high speed railway
  • Method and device for searching wireless electromagnetic ambient interference on high speed railway

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Embodiment Construction

[0039] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0040] Embodiments of the present invention provide a method for searching high-speed railway (GSM-R) wireless electromagnetic environment interference, such as Figure 4 shown, including:

[0041] Step 41, when co-channel interference is detected, instruct to check the first frequency band frequency (930-934MHZ) of the public mobile communication network, and withdraw the first range frequency point (No. 999-1019) of the public mobile communication network;

[0042] Step 42, when adjacent frequency interference is detected, instruct to use digital optical fiber remote equipment (digital optical fiber repeater) instead of broadband analog repeater, and replace the broadband duplexer with a narrowband (941-954MHZ) duplexer;

[0043] Step 43, when intermo...

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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...

Claims

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Application Information

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IPC IPC(8): H04B17/00H04W24/00
CPCY02D30/70
Inventor 林竹轩王晓亮彭陈发韩洪明周强
Owner CHINA MOBILE GROUP ZHEJIANG
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