A railway-specific same-frequency jamming device and its working method

Abstract

The invention provides a same frequency interference device for railway and a working method thereof. The same frequency interference device for railway comprises a base station or a repeater connected with a 45dB dual-orientation coupler, an interference detection module, a power monitoring module, a control unit and a network management center, wherein a downlink signal output by the base station or the repeater is transmitted to the control unit via a forward end of the 45dB dual-orientation coupler and the power monitoring module, an uplink signal received by the base station or the repeater is transmitted to the control unit via a reverse end of the 45dB dual-orientation coupler and the interference monitoring module; and the control unit is connected with the network management center via Ethernet. According to the same frequency interference device and the working method thereof provided by the invention, the uplink continuous same-frequency interference source signals can be detected and analyzed, and meanwhile transmitting power of the downlink signal of the base station or the repeater can be detected.

Description

technical field [0001] The invention relates to the field of GSM-R wireless mobile communication equipment, in particular to a railway-specific same-frequency interference equipment and a working method thereof. Background technique [0002] At present, the railway communication and radio management departments adopt passive methods for GSM-R communication guarantee and dedicated frequency band electromagnetic environment protection (rather than active, real-time monitoring and forecasting and early warning of interference), that is, when the GSM-R system affects normal communication Interference elimination and search work is carried out only when there is no interference. Usually, the staff uses spectrum monitoring equipment to conduct spectrum analysis on GSM-R, or uses mobile communication network drive test equipment to find base stations that illegally use GSM-R frequency resources. This can only solve the problem. For a small part of the interference, it is difficult ...

AI Technical Summary

Problems solved by technology

[0002] At present, the railway communication and radio management departments adopt passive methods for GSM-R communication guarantee and dedicated frequency band electromagnetic environment protection (rather than active, real-time monitoring and forecasting and early warning of interference), that is, when the GSM-R system affects normal communication Interference elimination and search work is carried out only when there is no interference. Usually, the staff uses spectrum monitoring equipment to conduct spectrum analysis on GSM-R, or uses mobile communication network drive test equipment to find base stations that illegally use GSM-R frequency resources. This can only solve the problem. For a small part of the interference, it is difficult to monitor and capture low-interception probability signals such as interference signals that appear for a short time and without strong regularity; for GSM-R co-frequency or adjacent frequency interference, only high-speed rail operation is used. During the "skylight" time, the power-off method of the base station is used to judge the situation of the same-frequency signal, and this method brings hidden dangers to the safety of railway operation and does not comply with the railway GSM-R operation specification

[0003] Therefore, there is currently no fully effective dedicated equipment for real-time monitoring, analysis and search of GSM-R interference, especially GSM-R co-channel interference

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