KR19990046684A - Movile RF repeater for hands-free - Google Patents

Abstract

The disclosed hands-free repeater is a hands-free type of handheld repeater that can be serviced by one wireless terminal subscriber to communicate hands-free in an area with low reception sensitivity.

A first handset converter for filtering and outputting an RF signal of a set frequency band among RF signals received through an antenna from a base station, and filtering and outputting an RF signal to be transmitted to the base station to the antenna; A second handset converter for filtering and outputting an RF signal of a set frequency band among RF signals input through a cable from a wireless terminal, and filtering and outputting an RF signal received at a base station to a wireless terminal; A plurality of filters configured to detect RF signals of a specific frequency band by filtering the RF signals output by the first and second handset converters; A plurality of power amplifiers amplifying the RF signals output from the plurality of filters, respectively, and outputting the amplified RF signals to the first and second hand converters; A voice signal connected to a cable connecting the second handset and the wireless terminal and detecting the voice signal from the RF signal transmitted between the second handset and the wireless terminal, and converting the input voice signal into an RF signal and outputting the voice signal. Processing unit; And voice input / output means for outputting the voice signal detected by the voice signal processor to the speaker and inputting the voice signal of the subscriber through a microphone to the voice signal processor.

Description

Handsfree repeater {Movile RF repeater for hands-free}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication repeater, and in particular, a small repeater capable of receiving a service by one wireless terminal subscriber is configured to be hands-free so that hands-free communication can be performed in an area having low reception sensitivity. A hands-free repeater.

With the development of information and communication technology, changes in life styles, and economic growth, the form of communication culture is changing rapidly.In the information age, the demand for high-speed information transmission is regardless of time and place. Mobile communication, which can receive communication services in and mountainous areas, is becoming an important communication medium indispensable in daily life.

Unlike the wide area method, which uses a service area as one large area, a mobile communication system divides an entire service area into a small service area called a cell and allocates a certain number of radio channels available within each cell. do.

Cell sites installed in each cell are centrally controlled in a switching system, and the repeater receives a low output voice data transmitted from the base station and the terminal for smooth communication between the base station and the user terminal, thereby receiving a frequency of a desired band. It selects and amplifies and transmits an RF signal to a wireless terminal and a base station.

However, there are still many areas other than the service area that do not belong to the cell area of the wireless base station, and more wireless base stations and repeaters should be installed in order to secure all the areas other than the service area as the mobile communication service area.

1 is a block diagram schematically showing a general repeater.

As shown therein, a plurality of transmitting and receiving antennas 1 and 1a for transmitting and receiving an RF signal using a radio wave medium and an RF signal to or from the antennas 1 and 1a are received. A plurality of handsets (11, 11a) capable of simultaneously processing an RF signal in both directions, a low noise amplifier (13, 13a) for amplifying the RF signal output through the handsets (11, 11a), and Among the RF signals output through the low noise amplifiers 13 and 13a, the filters 15 and 15a which pass RF signals of a desired frequency band and the RF signals output through the filters 15 and 15a are amplified and transmitted. And switch amplifiers 11a and 11 and drive amplifiers 17 and 17a which transmit through the antennas 1a and 1.

The repeater configured as described above is installed in an area or a building having a weak reception sensitivity of the radio wave to expand the area of the mobile communication service more widely, and receives a plurality of radio waves to serve a plurality of users.

For example, the first transmit / receive antenna 1 of the repeater 10 may be installed in a region with good reception sensitivity, and the other transmit / receive antenna 1a of the repeater 10 may be installed in a basement, subway, or tunnel of a large building having low reception sensitivity. By installing the light source or the like, it is possible to amplify and transmit radio waves to areas with poor reception sensitivity to provide high quality communication services.

However, as described above, the medium / large repeaters installed in the basement or underground places of large buildings are not only expensive equipments in terms of cost but also have high power consumption and are not suitable for individual installation due to their large size. Serve the subscriber.

The installation of expensive repeaters in all areas with poor reception sensitivity by mobile service providers is economically burdensome and provides high quality service to subscribers in blind spots or areas with poor reception sensitivity. This could lead to dissatisfaction of subscribers, which caused the market economy of mobile operators to fall.

Accordingly, an object of the present invention is to configure a small repeater which can be serviced by only one wireless terminal subscriber in hands-free type, and by connecting the wireless terminal with a cable, it is convenient to use and can implement high quality communication service even in a region with low reception sensitivity. To provide a hands-free repeater.

Hands-free repeater of the present invention for achieving this object, In the repeater for relaying the RF signal between the wireless terminal and the base station, the RF signal of the frequency band set among the RF signals received through the antenna from the base station to output And a first transceiver for filtering the RF signal to be transmitted to the base station and outputting the filtered RF signal to the antenna; A second handset converter for filtering and outputting an RF signal of a set frequency band among RF signals input from the wireless terminal through a cable, and filtering and outputting an RF signal received from a base station to the wireless terminal; A plurality of filters configured to detect RF signals of a specific frequency band by filtering the RF signals output by the first and second handset converters; A plurality of power amplifiers amplifying the RF signals output from the plurality of filters, respectively, and outputting the amplified RF signals to the first and second hand converters; A voice signal is detected from an RF signal transmitted between the second handset and the wireless terminal and is transmitted between the second handset and the wireless terminal. The voice signal is converted into an RF signal and output. A voice signal processor; And a voice input / output means for outputting a voice signal detected by the voice signal processor to a speaker and inputting a voice signal of a subscriber through a microphone to the voice signal processor.

1 is a block diagram schematically showing a general mobile communication repeater,

2 is a view showing a hands-free repeater according to the present invention.

* Explanation of symbols for the main parts of the drawings *

100: Cellular Phone 150: Cable

200: Hands free type repeater 220, 220a: Duplexer

240, 240a: filter 260, 260a: amplifier

270: voice signal processing unit 280, 290: voice input / output means

Hereinafter, with reference to the accompanying drawings of Figure 2 will be described in detail the hands-free repeater of the present invention.

2 is a view showing a hands-free repeater according to an embodiment of the present invention.

Here, reference numeral 100 denotes a wireless terminal, and reference numeral 200 denotes a portable repeater.

The hands-free repeater 200 includes a plurality of handset converters 220 and 220a, a plurality of filters 240 and 240a, a plurality of power amplifiers 260 and 260a, a voice signal processor 270 and a microphone. 280 and a speaker 290.

The first transmitter 220 of the plurality of transmitters 220 and 220a includes a transmission / reception band pass filter (not shown) to form transmission / reception channels TX and RX and is transmitted to the transmission / reception antenna 210. After filtering the RF signal of the desired frequency band of the public radio signal and the RF signal to be transmitted is configured to transmit to the base station through the transmission and reception antenna 210, the second hand-switch switch 220a is a transmission and reception band pass filter And transmit and receive channels TX and RX, and filter the RF signal input from the wireless terminal 100 through the interface 280 or filter the received RF signal and output the filtered RF signal to the wireless terminal 100. have.

In addition, the plurality of filters 240 and 240a, that is, the first and second filters 240 and 240a, may have RF of a desired frequency band among the RF signals output from the first and second hand-turn converters 220 and 220a, respectively. The signal is precisely selected and filtered, and the plurality of power amplifiers 260 and 260a, that is, the first and second power amplifiers 260 and 260a, respectively output the RF outputs from the first and second filters 240 and 240a. It is configured to amplify the signal with a predetermined amplification gain to output to the first and second hand converter 220, 220a.

The hands-free set is electrically connected to an output terminal formed toward the terminal 100 of the second handset 220a, detects and demodulates an input RF signal, detects a voice signal, and amplifies the detected voice signal. The voice signal processor 270 converts the voice signal into an RF signal and outputs the RF signal to the handset converter 220a, and the microphone 280 converts the voice signal of the user into an electrical signal and inputs the voice signal to the voice signal processor 270. And a speaker 290 for outputting the voice signal processed by the voice signal processor 270 to the subscriber.

The RF signal transmitted from the base station or the medium / large repeater 10 as shown in FIG. 1 is connected to the first receiving antenna 210 in a state in which the hands-free repeater configured as described above is connected with the wireless terminal 100 and the cable 150. When abandoned, the RF signal is received through the reception channel (RX) of the first handset converter 220, and the RF signal of the desired frequency band is first filtered, and then the RF signal of the desired frequency band is received through the first filter 240. Filter more precisely and amplify through first power amplifier 260.

The second handset converter 220a filters the RF signal inputted through the receiving channel RX and amplified by the first power amplifier 260 and then outputs the filtered audio signal to the voice signal processor 270, and the voice signal processor 270. Detects and demodulates an RF signal input from the second handset converter 220a to detect a voice signal, and the detected voice signal is amplified and output to the speaker 290 so that the subscriber can listen.

In the hands-free repeater 200 of the present invention, a reception channel is formed by the above-described process, and the transmission channel is as follows.

The voice signal input through the microphone 280 is signal-processed by the voice signal processor 270 into an RF signal and then input to the transmission channel TX of the second handset converter 220a.

The second handset converter 220a filters an RF signal input through a transmission channel TX to detect an RF signal of a desired frequency band, and the detected RF signal is an RF of a desired frequency band through a second filter 240a. The signal is more precisely filtered and then amplified through the second power amplifier 260a.

The RF signal amplified by the second power amplifier 260a is inputted through the transmission channel TX, filtered, and then transmitted to the base station or the medium / large repeater through the transmit / receive antenna 210. .

Therefore, when the mobile subscriber makes a phone call using the wireless terminal 100, the cable is transmitted to the repeater 200 through the cable 150, and the repeater 200 is transmitted to the intermediate / large repeater or base station through the transmit / receive antenna 210. Send out the data corresponding to the telephone number.

Subsequently, when the phone is connected, the subscriber uses the microphone 280 and the speaker 290 of the hands-free repeater 200 to make a call with the other party.

As described above, the present invention provides a personal hands-free repeater that can be arbitrarily installed by an individual instead of a medium / large repeater, so that a subscriber can install it in a ship or a vehicle at low cost, even in a blind spot of communication or a region where reception sensitivity is weak. Higher quality communication services can be conveniently used, thereby improving the communication reliability of mobile operators and at the same time expanding the wider communication market.

Claims (1)

In the repeater for relaying the RF signal between the wireless terminal and the base station, A first handset converter for filtering and outputting an RF signal of a set frequency band among the RF signals received through the antenna from the base station, and filtering and outputting the RF signal to be transmitted to the base station to the antenna; A second handset converter for filtering and outputting an RF signal of a set frequency band among RF signals input from the wireless terminal through a cable, and filtering and outputting an RF signal received from a base station to the wireless terminal; A plurality of filters configured to detect RF signals of a specific frequency band by filtering the RF signals output by the first and second handset converters; A plurality of power amplifiers amplifying the RF signals output from the plurality of filters, respectively, and outputting the amplified RF signals to the first and second hand converters; A voice signal is detected from an RF signal transmitted between the second handset and the wireless terminal and is transmitted between the second handset and the wireless terminal. The voice signal is converted into an RF signal and output. A voice signal processor; And And a voice input / output means for outputting a voice signal detected by the voice signal processor to a speaker and inputting a subscriber's voice signal through a microphone to the voice signal processor.