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GSM digital wireless repeater and method for shutting off time slot of uplink carrier wave

A technology of digital wireless and time slot shutdown, applied in the direction of radio relay system, etc., can solve the problems of base station influence, raising base station noise level, receiving sensitivity, call quality affecting base station communication capacity, etc., to save cost and quality. and the effect of increasing quantity, improving performance and reliability

Inactive Publication Date: 2009-09-30
COMBA TELECOM SYST (GUANGZHOU) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the control is not good, it is easy to increase the noise level of the base station, which will have a serious impact on the base station, such as base station receiving sensitivity, call quality, etc., and ultimately affect the communication capacity of the base station

Method used

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  • GSM digital wireless repeater and method for shutting off time slot of uplink carrier wave
  • GSM digital wireless repeater and method for shutting off time slot of uplink carrier wave
  • GSM digital wireless repeater and method for shutting off time slot of uplink carrier wave

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Embodiment 1

[0028] Such as figure 1 As shown, this GSM digital wireless repeater system, the repeater system is a wireless carrier frequency selective repeater system, including uplink and downlink, the uplink is composed of MT-side duplexer, uplink low-noise amplifier, The down-conversion module, uplink baseband processing unit, up-conversion module, uplink amplifier, and DT-side duplexer are sequentially connected; the downlink consists of a DT-side duplexer, downlink low-noise amplifier, down-conversion module, and downlink baseband processing unit , an up-conversion module, a downlink amplifier, and an MT-side duplexer are connected in sequence. The MT-side duplexer is connected to the mobile phone user signal through the coverage / receiving antenna, and the DT-side duplexer is connected to the base station signal through the retransmission antenna. As shown in 2, the FPGA uplink baseband processing unit includes an A / D converter, a DDC digital down-conversion channel, an Ec / Io decisio...

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Abstract

The invention provides a GSM digital wireless repeater system, which is a wireless carrier wave frequency selection repeater system; the system comprises an uplink and a downlink; the uplink comprises an MT end duplexer, an uplink low-noise amplifier, a lower frequency conversion module, an uplink baseband processing unit, an upper frequency conversion module, an uplink amplifier and a DT end duplexer which are connected in turn; the downlink comprises a DT end duplexer, a downlink low-noise amplifier, a lower frequency conversion module, a downlink baseband processing unit, an upper frequency conversion module, a downlink amplifier and an MT end duplexer which are connected in turn; the MT end duplexer is connected with a signal of a mobile phone user through a covering / receiving antenna; and the DT end duplexer is connected with a signal of a base station through a retransmitting antenna, wherein the uplink baseband processing unit comprises an A / D convertor, a DDC digital lower frequency conversion channel, an Ec / Io decision circuit, a digital filtering unit, a DUC digital upper frequency conversion channel and a D / A convertor which are connected in turn. The system can effectively inhibit noise and has strong maneuverability and low cost.

Description

technical field [0001] The invention relates to the field of GSM digital wireless repeater system design, in particular to the GSM digital wireless repeater and its uplink carrier time slot shut-off method. Background technique [0002] With the rapid growth of mobile communication services, operators have an urgent need to enhance their respective brand effects, and the corresponding network quality requirements are also increasing. Nowadays, construction projects such as underground residences and road coverage are in full swing. As an effective means of extending network coverage, the repeater still has unlimited potential. However, the traditional analog repeater, as an active device, will inevitably introduce some interference noise to the base station while amplifying the useful signal. If the control is not good, it is easy to increase the noise level of the base station, which will have a serious impact on the base station, such as base station receiving sensitivit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/14
Inventor 赵建平刘志敏秦海俊
Owner COMBA TELECOM SYST (GUANGZHOU) LTD
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