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ISM frequency band mobile communication frequency shift transmission repeater

A mobile communication and repeater technology, applied in radio relay systems and other directions, can solve problems such as unsatisfactory effects, and achieve the effects of fast link deployment, flexible networking, and interference avoidance

Active Publication Date: 2009-04-08
WUHAN HONGXIN TELECOMM TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

It is worth noting that simple tower item amplification is often not ideal

Method used

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  • ISM frequency band mobile communication frequency shift transmission repeater
  • ISM frequency band mobile communication frequency shift transmission repeater
  • ISM frequency band mobile communication frequency shift transmission repeater

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0018] combined with figure 1 The present invention is further described.

[0019] The mobile communication wireless frequency shifting repeater system includes near-end equipment and remote equipment. The main units inside the near-end equipment can be divided into radio frequency unit and frequency shifting unit according to their functions. The radio frequency unit refers to the radio frequency processing unit of the conventional repeater of the low noise amplifier and the power amplifier, and its function is to obtain a suitable level through radio frequency processing, and the function of the low noise amplifier is to adjust the signal level of the wireless communication network to the frequency shifting unit Appropriate entrance level, the function of the power amplifier is to amplify the output signal level of the frequency shifting unit to a level suitable for space transmission, usually a high linear power amplifier. The function of the frequency shifting unit is to ...

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Abstract

The invention relates to an ISM frequency range, mobile communication, wireless frequency shift repeater, comprising near-end equipment and remote-end equipment, and in the downlink direction, the near end obtains the signal of a mobile communication network from the air or directly by electric coupler, the signal is regulated to a proper level by a radio frequency unit and then inputted to a frequency shift unit, which converts the operating frequency of the signal into a relay frequency, and after this, regulated to a proper level by a power amplifier, the signal is outputted; the remote end regulates the received near-end downlink signal to a proper level by a radio frequency unit, then makes the downlink signal enter in a frequency shift unit to convert the relay frequency into the operating frequency and after this, regulated to a proper level by a highly linear power amplifier, the downlinksignal is outputted to cover a corresponding region; in the uplink direction, the signal processing course is completely the same as that in the downlinkdirection. The invention has the advantages below: fast link distribution, flexible networking, low interference to large network and low cost.

Description

technical field [0001] The present invention relates to a mobile communication system that performs different-frequency relay transmission on the working frequency, that is, a mobile communication wireless frequency shift repeater that uses the ISM frequency band to perform frequency conversion of wireless communication signals and then relays transmission, hereinafter referred to as mobile communication wireless frequency shift Repeater. Background technique [0002] In China's mobile communication network construction, the mobile communication relay system, that is, the repeater plays an increasingly important role. The mobile communication repeaters in the network mainly include the following types: co-frequency wireless repeater, optical fiber transmission repeater, trunk amplifier, base station extended coverage amplifier. They are described as follows: [0003] Wireless co-frequency repeater. This is the most common repeater. It is cheap and easy to install. It is e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/14
Inventor 蒋汉军甘洪文
Owner WUHAN HONGXIN TELECOMM TECH CO LTD
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