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Device and method for performing interference detection on global system for mobile communications for railways (GSM-R)

A GSM-R and network technology, applied in the field of wireless communication, to achieve the effect of avoiding occupation

Inactive Publication Date: 2012-08-01
BEIJING LIUJIE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The other is interference from different standards, non-GSM interference signals

Method used

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  • Device and method for performing interference detection on global system for mobile communications for railways (GSM-R)
  • Device and method for performing interference detection on global system for mobile communications for railways (GSM-R)
  • Device and method for performing interference detection on global system for mobile communications for railways (GSM-R)

Examples

Experimental program
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Embodiment 1

[0043] Embodiment 1, a device for detecting GSM-R network interference, such as figure 1 shown, including:

[0044] The Um monitoring unit is used to receive the wireless signal of the GSM or GSM-R network from the Um interface and perform synchronization and demodulation, and extract information such as messages and service data carried on the wireless signal; any ARFCN in all frequency bands ( Absolute Radio Frequency Channel Number) channel (including uplink and downlink) is demodulated to obtain the original bit information on all 8 time slots, and parse the original bit information on all 8 time slots into the final Layer 3 signaling, or business data;

[0045] The interference judging unit is used to parse out the currently occupied frequency points near the area to be detected according to the layer 3 signaling output by the Um monitoring unit, by combining the currently occupied frequency points and the GSM-R network frequency points in the area to be detected Points...

Embodiment 2

[0068] Embodiment 2. A method for detecting GSM-R network interference, comprising:

[0069] Receive the wireless signal of GSM or GSM-R network from the Um interface and perform synchronization and demodulation to extract information such as messages and business data carried on the wireless signal; decode any ARFCN channel (including uplink and downlink) in all frequency bands tune, and obtain the original bit information on all 8 time slots, and parse the original bit information on all 8 time slots into the final layer 3 signaling, or service data;

[0070] Analyze the currently occupied frequency points near the area to be detected according to the layer 3 signaling, and compare the currently occupied frequency points with the GSM-R network frequency points in the area to be detected to determine whether the GSM-R network be disturbed.

[0071] In this embodiment, the frequency points currently occupied near the area to be detected refer to the frequency points allocated...

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Abstract

The invention provides a device and a method for performing interference detection on a global system for mobile communications for railways (GSM-R). The device comprises a Um monitoring unit and an interference judgment unit, wherein the Um monitoring unit is used for receiving, synchronizing and demodulating wireless signals of a GSM network or a GSM-R network from a Um interface, extracting messages and service data carried by the wireless signals, demodulating any absolute radio frequency channel numbered frequency channel in all frequency bands, acquiring original bit information on all of the eight time slots, and analyzing the original bit information on all of the eight time slots into a layer 3 signaling or the service data; and the interference judgment unit is used for analyzing currently occupied frequency points in or near an area to be detected according to the layer 3 signaling output from the Um monitoring unit, and judging whether the GSM-R network is interfered by comparing the currently occupied frequency points with the GSM-R network frequency points in the area to be detected. By the device and the method, interference detection of the GSM-R network can be performed conveniently and quickly.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a device and method for detecting GSM-R network interference. Background technique [0002] For mobile communication systems, wireless signal interference is always an inevitable topic. GSM-R (GSM for Railways) is a comprehensive dedicated digital mobile communication system specially designed for railway communication; in the GSM-R network, interference can be divided into 2 categories: [0003] One is co-standard interference. For example, unreasonable planning in the GSM-R network leads to co-frequency and adjacent-frequency interference. frequency interference. [0004] The other is interference from different standards, non-GSM interference signals. [0005] The interference detection mentioned in this article refers to the detection of same-standard interference. [0006] The existing interference detection technology usually uses a test mobile phone, inserts the S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00
Inventor 蒋文怡陈乐孙斌武贵君丁建文米兵安志鹍王义平
Owner BEIJING LIUJIE TECH CO LTD
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