KR19990018816A - Indoor subscriber device communication method and device therefor in WLL and IMT-2000 system - Google Patents

Abstract

The present invention is to improve the transmission and reception performance in a room with poor radio wave environment, and receives a signal from a base station installed outdoors and transmits it to a repeater installed indoors, and the repeater transmits the signal to a fixed subscriber access Characterized in that the transmission to the general terminal through the device. In addition, in the indoor communication method of a subscriber device of the WLL and IMT-2000 system which receives a signal transmitted from a base station and transmits it to an indoor telephone and a general terminal such as a telephone, a fax, a PC, a portable terminal, etc. Receives the signal and distributes the power, relays the distributed signal to the fixed subscriber station and transmits the signal to the general subscriber station, and the other distributed signal is transmitted to the general telephone by RF processing and digital processing. Characterized in that.

This ensures smooth communication even in rooms with poor radio wave environments.

Description

Indoor subscriber device communication method and device therefor in WLL and IMT-2000 system

The present invention provides efficient use of indoors in the WLL and IMT-2000 bands in future wireless local loop and next generation land mobile communication (IMT-2000 or FPLMTS) systems, and to improve the transmission and reception performance of terminals. A communication method of a subscriber device and a device thereof,

(Prior art and problems)

In the WLL and IMT-2000 systems, unlike conventional wired telephone networks, subscriber equipment uses 2.3 ~ 2.4GHz wireless subscriber network and 1.885 ~ 2.205GHz, 2.110 ~ 2.200GHz IMT-2000 frequency band. This varies greatly. Especially when used in a normal home or office, the indoor radio environment should be considered. In other words, the wall, which blocks the indoor and outdoor, may block the radio wave, and thus the terminal or the like may not properly receive a signal.

Accordingly, an aspect of the present invention is to provide a communication method of a subscriber device for improving transmission and reception performance in a room having a poor radio wave environment.

(Means to solve the task)

Accordingly, in order to solve the above problems, the present invention receives a signal from a base station installed outdoors and transmits it to a repeater installed indoors, and the repeater transmits the signal through a fixed subscriber access device to a telephone and a fax. It is characterized in that the transmission to a general terminal, such as a PC and directly to the portable terminal. In addition, the indoor communication method of the subscriber device of the WLL and IMT-2000 system that receives the signal transmitted from the base station and transmits it to the indoor portable terminal, it is installed outdoors and receives the signal from the base station to distribute the power and distributed It relays one signal to a fixed subscriber access device by relaying it to a repeater, and transmits it to a general terminal such as a telephone, a fax, and a PC, and the other distributed signal is transmitted to a general telephone by RF processing and digital processing.

(Example)

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 is a block diagram of an indoor device of a subscriber device using a passive repeater for improving transmission and reception performance of a portable subscriber device and a fixed subscriber access device according to the first embodiment.

In order to improve transmission and reception performance of a subscriber device in a poor indoor radio wave environment, a high gain antenna 11 is mounted outdoors to receive a signal from a base station and connected to a passive repeater 12 through an RF cable. Indoors, signals through the passive repeater 12 are transmitted to the WLL and IMT-2000 fixed subscriber access devices 13 or the WLL and IMT-2000 portable subscriber devices 14 to maintain communication with the base station.

In this method, the WLL and IMT-2000 fixed subscriber access devices 13 or the WLL and IMT-2000 portable subscriber devices 14 perform digital modulation, demodulation, and demodulation with the RF module of the phase up-down conversion and amplification functions. The overall subscriber device functions such as the processing unit should be built in, and the repeater is optimized to provide a path for improving indoor reception sensitivity.

In the same manner as in FIG. 1 using a repeater, a portable subscriber station can be used as a cordless phone indoors, and in the future, when mobility is provided, a portable mobile terminal can directly communicate with a base station using a portable terminal outdoors. It is characterized by the possibility of switching to.

2 is a view showing a second embodiment of the present invention.

The present embodiment is a method of configuring a subscriber station having a home base station (HBS) and a manual relay function in a room, and is connected to a regular telephone 20 by wire through a subscriber device having a HBS function. Available in form. In addition, the passive repeater 19 can be used as the WLL and IMT-2000 fixed subscriber access device 21 as in FIG. 1.

The HBS functional subscriber device consists of a power divider 16, a WLL and IMT-2000 RF module 17, a WLL and IMT-2000 digital processor 18, and a passive repeater 19. The power divider 16 distributes power from the outdoor high gain antenna 15 to the landline telephone 20 and the WLL and IMT-2000 subscriber station repeaters 19 via wire. The WLL and IMT-2000 RF module 17 down-converts the signal from the power divider 16 and always changes and amplifies the signals from the WLL and IMT-2000 digital processing unit 18. The WLL and IMT-2000 digital processing unit 18 modulates and demodulates the baseband signal. The passive repeater 19 then relays the signal between the power divider 16 and the WLL and IMT-2000 fixed subscriber station 21.

The function of this embodiment of the above configuration will be described. In order to use an indoor terminal efficiently, a high gain antenna 15 is mounted outdoors to receive a signal from a base station, input to a power splitter 16 through an RF cable, and connect to a wired telephone 20 (in a home or the like). Power is distributed to the input stages of the WLL and IMT-2000 RF modules 17 and passive repeaters 19 for the < RTI ID = 0.0 > The electric distribution signal is connected to the general telephone 20 by wire through a frequency conversion, amplification, and demodulation process through the WLL and IMT-2000 RF modules 17 and the digital processing unit 18.

The power-distributed signal is also transmitted via the passive repeater 19 to the WLL and IMT-2000 fixed subscriber interface 21 as in the first embodiment. Signal transmission from the terminal to the outside is performed in the reverse order of the above reception process.

In the method of this embodiment, the WLL and IMT-2000 fixed subscriber access device 21 should include the functions of the WLL and IMT-2000 RF module 17, the digital processing unit 18, etc. in the HBS-capable subscriber device. In this method, the ordinary telephone 20 connected by wire and the WLL and IMT-2000 fixed subscriber access device 21 can be used by allocating one RF channel or independently using two RF channels.

FIG. 3 is a third embodiment, except that the passive repeater 19 in FIG. 2 is replaced by the active repeater 22. This configuration method is proposed as a method to use in a situation worse than the radio wave environment in FIG. By using the active repeater 26 instead of the passive repeater to amplify and retransmit the power input to the repeater, even if the input signal to the outdoor high-gain antenna is weaker than in FIG. Can be maintained.

4 is a configuration diagram of the active repeater of FIG. 3, which includes a transmission / reception splitter 23 for providing a separate path for transmission and reception, an ultra-low noise amplifier (LNA) 24 for minimizing input noise, and an out-of-signal band. A bandpass filter 25 for removing noise and passing only a desired signal band, a secondary amplifier 26 for improving the gain of the repeater, and an isolator 27 for preventing backward feedback of the signal during transmission and reception. .

1 is a block diagram of a subscriber device using a passive repeater for improving transmission and reception performance of portable and fixed access subscriber devices.

2 is a block diagram of an HBS-type subscriber device with a manual repeater function,

3 is a configuration diagram of an HBS type subscriber device having an active repeater function;

4 is a configuration diagram of the active repeater of FIG. 3.

* Explanation of symbols for main parts of the drawings

11: outdoor high gain antenna 12: passive repeater

13: WLL and IMT-2000 fixed subscriber access device

14: Portable terminal for WLL and IMT-2000

16: power divider 17: WLL and IMT-2000 RF module

18: WLL and IMT-2000 digital processing unit 19: manual repeater

20: regular telephone 22: active repeater

23: Transmitter and receiver splitter 24: Ultra low noise amplifier (LNA)

25 bandpass filter 26 secondary amplifier

27: isolator 28: antenna for active relay

As described above, the present invention is a method for relaying WLL and IMT-2000 band signals from a base station to a WLL and IMT-2000 fixed subscriber access device and a portable subscriber station using a passive repeater. Improved reception performance and efficient operation can be achieved.

In addition, by using a portable subscriber device, it is possible to provide mobility using a cordless phone indoors and a portable terminal capable of directly communicating with a base station like an existing mobile phone outdoors.

In addition, by adopting the configuration method of the HBS-capable subscriber device including the repeater function, it is possible to connect the existing ordinary telephone (home phone) to the HBS-capable subscriber device by wire and use the WLL and IMT-2000 fixed subscriber through the repeater. The WLL and IMT-2000 subscribers can communicate with the access device, and the repeater can be in the form of a passive repeater or an active repeater depending on the radio wave environment. When used, it has an excellent effect of being able to receive high quality service and operate efficiently.

Claims (9)

An indoor communication method using a subscriber access system of a WLL and an IMT-2000 system that receives a signal transmitted from a base station and transmits the signal to a general terminal indoor, wherein the signal received from the base station is received by an antenna installed outdoors WLL and IMT-2000 subscriber access system, characterized in that the wired transmission to the repeater is installed, the repeater transmits the signal to the general terminal through the fixed subscriber access device and also directly from the repeater to the portable subscriber device Indoor communication method. In the indoor communication method of the WLL and IMT-2000 subscriber access system which receives a signal transmitted from a base station and transmits it to a general telephone and an indoor terminal such as a telephone, a fax, a PC, a portable terminal, and the like. Receives the signal from the base station and distributes the power, relays the distributed signal to the repeater, and transmits the signal to a general denser such as a telephone, a fax, a PC, or a portable terminal through a fixed subscriber access device, and the other distributed one. The signal of the indoor communication method of the WLL and IMT-2000 subscriber access system, characterized in that the RF processing, digital processing to transmit to a normal telephone. The indoor communication method of claim 1 or 2, wherein the repeater is a manual repeater. The indoor communication method according to claim 1 or 2, wherein the repeater is an active repeater. The WLL and IMT-2000 subscriber access system of claim 1, wherein the portable subscriber device is used as a cordless phone indoors and as a mobile portable terminal that communicates directly with the base station outdoors. Indoor communication method. An indoor antenna that receives a signal from a base station and transmits it to a repeater, and an indoor antenna that receives the signal and transmits the signal to a general terminal such as a telephone, a fax, a PC, a portable terminal, and the like through a repeater antenna, a subscriber device antenna, and a fixed subscriber access device. Indoor subscriber device of the WLL and IMT-2000 system, characterized in that consisting of a repeater installed in. An outdoor antenna for receiving a signal from a base station and transmitting the signal to a repeater, a power divider for receiving the signal and distributing power of the signal, and receiving and relaying one of the divided signals to transmit a telephone through a fixed subscriber access device; Repeater for transmitting to general terminal such as FAX, PC, portable terminal, RF module for receiving the RF signal of the other one of the divided signal and performing the phase up, down conversion and amplification of the signal, and the base of the RF module rotor. Indoor subscriber device of the WLL and IMT-2000 system, characterized in that the digital processing unit for modulating, demodulating the band signal and wire-transmitting to a regular telephone. 8. The indoor subscriber device of the WLL and IMT-2000 system according to claim 6 or 7, wherein the repeater is a passive repeater. 8. The indoor subscriber device of the WLL and IMT-2000 system according to claim 6 or 7, wherein the repeater is an active repeater.