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GSM (Global System for Mobile Communications) automatic frequency-selecting device and method

An automatic and frequency selection technology, applied in the field of communication, can solve the problems of dropped calls, coverage area switching, and unsatisfactory frequency selection results, and achieve the effect of enhancing stability, strong practicability, and not easy to be interfered by objective conditions.

Inactive Publication Date: 2013-04-17
SICHUAN YOUKE COMM TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

This method realizes automatic frequency selection to a certain extent, but because there is no cell discrimination mechanism, the result of frequency selection is not ideal. One is that the frequency points of multiple cells are selected, resulting in handover problems in the coverage area, and the other is that no cell is selected. All frequency points cause call drop

Method used

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  • GSM (Global System for Mobile Communications) automatic frequency-selecting device and method
  • GSM (Global System for Mobile Communications) automatic frequency-selecting device and method

Examples

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Embodiment

[0020] Such as figure 1 and figure 2 As shown: the GSM automatic frequency selection device includes a donor antenna 1, a downlink coupler 2, a retransmission antenna 19, an uplink coupler 18, a channel output device 20 and an automatic frequency selection algorithm device 21; the donor antenna 1 is connected to the downlink coupler 2, The retransmission antenna 19 is connected to the uplink coupler 18 , both the uplink coupler 18 and the downlink coupler 2 are connected to the channel output device 20 , and the channel output device 20 is connected to the automatic frequency selection device 21 .

[0021] The automatic frequency selection algorithm device 21 includes a downlink unit, an uplink unit and an automatic frequency selection algorithm module; the downlink unit and the uplink unit are connected to the automatic frequency selection algorithm module;

[0022] The downlink unit is composed of a downlink filter 3, a downlink amplifier 4, a downlink mixer 5, a downlink ...

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PUM

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Abstract

The invention discloses a GSM (Global System for Mobile Communications) automatic frequency-selecting device and method. The device comprises a donor antenna, a retransmission antenna, an uplink coupler, a downlink coupler, a signal channel device and an automatic frequency-selecting algorithm device. The automatic frequency-selecting method comprises the steps of downlink signal processing, downlink frequency-selecting processing, uplink signal processing, uplink frequency-selecting processing and uplink and downlink frequency point comparison and processing and the like. The frequency-selecting method provided by the invention realizes automatic frequency selection without manual intervention and is not affected by objective conditions. The stability of the automatic frequency-selecting device provided by the invention is greatly enhanced, the labor cost of manual debugging is saved, and the device has stronger practicality.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a GSM automatic frequency selection device and an automatic frequency selection method. Background technique [0002] To set the working frequency of the traditional repeater, the monitoring platform of the repeater is used to change the working frequency of the repeater. Engineers need to know the correct frequency in advance, and then send a change command through the monitoring platform to change the working frequency of the repeater. This method has two problems in actual engineering use. One is that the monitoring system is unstable or power-off, and the equipment cannot be controlled; the other is that this monitoring method requires each repeater to be equipped with a SIM card with SMS function enabled. , often arrears lead to normal use. [0003] With the digitalization of signal processing, an automatic frequency selection method has emerged for GSM communication...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W48/16
Inventor 方远兵
Owner SICHUAN YOUKE COMM TECH
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