Method and device for finding interference of high-speed rail wireless electromagnetic environment on gsm-r
A GSM-R, magnetic environment technology, applied in the field of wireless technology communication, can solve problems such as railway system chaos and safety accidents, and achieve the effect of eliminating co-frequency interference and ensuring operation.
Active Publication Date: 2018-03-23
CHINA MOBILE GROUP ZHEJIANG +1
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
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
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
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 for interference to railway-specific mobile communication networks in a high-speed railway (GSM-R) wireless electromagnetic environment, 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 narrow...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More 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 finding the interference of high-speed rail wireless electromagnetic environment on GSM-R. 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 existing network frequency will affect the noise floor of the railway dedicated mobile communication network (GSM-R) system. forming an uplift. [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...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/345H04W24/00
CPCY02D30/70
Inventor 林竹轩王晓亮彭陈发韩洪明周强
Owner CHINA MOBILE GROUP ZHEJIANG