KR19980039204A - Radio frequency circuit of small base station in mobile communication system by code division multiple access method - Google Patents

Radio frequency circuit of small base station in mobile communication system by code division multiple access method Download PDF

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Publication number
KR19980039204A
KR19980039204A KR1019960058198A KR19960058198A KR19980039204A KR 19980039204 A KR19980039204 A KR 19980039204A KR 1019960058198 A KR1019960058198 A KR 1019960058198A KR 19960058198 A KR19960058198 A KR 19960058198A KR 19980039204 A KR19980039204 A KR 19980039204A
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South Korea
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base station
transmission
signal
radio
radio frequency
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KR1019960058198A
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Korean (ko)
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KR100372515B1 (en
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박영석
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정장호
엘지정보통신 주식회사
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15507—Relay station based processing for cell extension or control of coverage area
    • H04B7/15514—Relay station based processing for cell extension or control of coverage area for shadowing compensation

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

본 발명의 목적은 적은 비용으로 음영지역등 사용자의 수가 적은 지역의 사용자에게 이동 통신서비스를 제공할 수 있는 이동 통신시스템의 소형기지국 무선주파수회로를 제공하는데 있다.An object of the present invention is to provide a small base station radio frequency circuit of a mobile communication system capable of providing a mobile communication service to a user of a small number of users, such as a shaded area at low cost.

본 발명에 따른 이동 통신시스템 소형기지국의 무선주파수회로는 전파를 흡수하고 공간 다이버서티(Diversity)를 갖는 2개의 4FA/3섹터 수신안테나(32)와, 상기 수신안테나(32)에 접속된 2개의 수신 대역통과 여파기(RBPF : 23)와, 상기 수신 대역통과 여파기(23)에 접속된 2개의 저잡음 증폭기(LNA : 34)와, 상기 저잡음 증폭기(34)에 접속된 2개의 하향변환기(DNC : 5)를 포함하는 무선수신부(31)와; 4.95MHz의 중간주파수 대역 신호를 입력하여 무선주파수 신호로 변환하는 1개의 상향변환기(UPC : 42)와, 상기 상향변환기(42)에 접속된 1개의 전력증폭기(PA : 43)와, 상기 전력증폭기(43)에 접속된 1개의 송신 대역통과여파기(TBPF : 44)와, 상기 송신 대역통과여파기(44)에 접속된 1개의 4FA/3섹터 송신안테나(46)를 포함하는 무선송신부(41)와; 상기 무선수신부(31)의 수신 대역통과여파기(33)에 접속된 1개의 기지국 수신 시험부(RBTU : 52)와 상기 무선송신부(41)의 송신 대역통과여파기(44)에 접속된 1개의 분배기(Splitter : 45)와, 상기 분배기(45)에 접속된 1개의 기지국 송신시험부(TBTL : 53)를 포함하는 기지국 감시부(51)로 구성된다.The radio frequency circuit of the small base station of the mobile communication system according to the present invention includes two 4FA / 3 sector receiving antennas 32, which absorb radio waves and have spatial diversity, and two connected to the receiving antennas 32. A reception bandpass filter (RBPF) 23, two low noise amplifiers (LNA) 34 connected to the reception bandpass filter 23, and two downconverters (DNC: 5) connected to the low noise amplifier 34; A wireless receiving unit 31 including; One up-converter (UPC) 42 for inputting a 4.95 MHz intermediate frequency band signal and converting it into a radio-frequency signal, one power amplifier (PA: 43) connected to the up-converter 42, and the power amplifier A wireless transmission section 41 including one transmission bandpass filter (TBPF) 44 connected to 43, and one 4FA / 3 sector transmission antenna 46 connected to the transmission bandpass filter 44; ; One base station reception test unit (RBTU) 52 connected to the reception band pass filter 33 of the radio receiver 31 and one distributor connected to the transmission band pass filter 44 of the radio transmitter 41 ( And a base station monitoring unit 51 including a splitter 45 and a base station transmission test unit (TBTL) 53 connected to the distributor 45.

Description

코드분할 다중 접속방식에 의한 이동 통신시스템 소형기지국의 무선주파수회로Radio frequency circuit of small base station in mobile communication system by code division multiple access method

본 발명은 이동 통신시스템에 관한 것이며, 보다 상세히는 코드분할 다중접속방식을 이용한 이동 통신시스템의 기지국 무선주파수회로에 관한 것이다.The present invention relates to a mobile communication system, and more particularly, to a base station radio frequency circuit of a mobile communication system using a code division multiple access method.

도 1은 종래의 기지극 무선주파수회로도이다.1 is a conventional known pole radiofrequency circuit diagram.

도 1를 보면, 기지국 무선주파수회로는 이동 단말기의 안테나로부터 방사되는 전파를 흡수하고 공간 다이버서티(Diversity)를 갖는 6개의 4FA/3섹터 수신안테나(2)와, 상기 수신안테나(2)에 접속되어 무선주파수 대역의 신호만을 통과시키는 6개의 수신 대역통과 여파기(RBPF : 3)와, 상기 수신 대역통과 여파기(3)에 접속되어 신호를 저잡음 증폭하는 6개의 저잡음 증폭기(LNA : 4)와, 상기 저잡음 증폭기(4)에 접속되어 무선주파수 대역외 신호를 4.95MHz의 중간주파수 대역의 신호로 변환하는 15개의 하향변환기(DNC : 5)와, 상기 하향변환기(5)에 접속되어 하향변환기(5)의 절체 및 상태보고를 하는 수신 분배셀프부(RDSTS : 6)를 포함하는 무선수신부(1)와; 4.95MHz의 중간주파수 대역 신호를 입력하여 무선주파수 신호로 변환하는 5개의 상향변환기(UPC : 12)와, 상기 상향변환기(12)에 접속되어 상향변환기(12)의 절체 및 상태보고를 하는 송신 분배셀프부(TDSTS : 17)와, 상기 송신 분배셀프부(TDSTS : 17)에 접속하여 신호의 전력을 증폭하는 3개의 전력증폭기(PA : 13)와, 상기 전력증폭기(13)에 접속되어 무선주파수 대역의 신호만을 통과시키는 3개의 송신 대역통과여파기(TBPF : 14)와, 상기 송신 대역통과여파기(14)에 접속되어 신호를 이동 단말기로 방사하는 3개의 4FA/3섹터 송신안테나(16)를 포함하는 무선송신부(11)와; 상기 무선수신부(1)의 수신 대역통과 여파기(3)에 접속된 1개의 기지국 수신 시험부(RBTU : 22)와, 상기 무선송신부(11)의 송신 대역통과여파기(14)에 접속되어 신호를 분기하는 3개의 분배기(Splitter : 15)와, 상기 분배기(15)에 접속된 1개의 기지국 송신시험부(TBTU : 23)와; 상기 무선송신부(11)의 분배기(15)에 접속된 5개의 송신 모니터부(MON : 24)를 포함하는 기지국 감시부(21)로 구성된다.1, a base station radio frequency circuit absorbs radio waves radiated from an antenna of a mobile terminal and is connected to six 4FA / 3 sector reception antennas 2 having spatial diversity and connected to the reception antennas 2. Six reception bandpass filters (RBPF: 3) for passing only signals in a radio frequency band, six low noise amplifiers (LNA: 4) for low noise amplification of signals connected to the reception bandpass filter (3), and 15 downconverters (DNC) 5 connected to the low noise amplifier 4 and converting out-of-radio signals into signals of an intermediate frequency band of 4.95 MHz, and downconverters 5 connected to the downconverters 5; A wireless receiving unit 1 including a receiving distribution self-receiving unit (RDSTS: 6) for switching over and reporting status; 5 up-converters (UPC) 12 for inputting a 4.95 MHz intermediate frequency band signal and converting them into radio frequency signals, and transmission distribution for switching and status reporting of the up-converter 12 connected to the up-converter 12 A self powering unit (TDSTS: 17), three power amplifiers (PA: 13) for amplifying signal power by connecting to the transmission distribution self-supply unit (TDSTS: 17), and a power frequency unit (13) for radio frequency Three transmission bandpass filters (TBPF) 14 for passing only signals in a band, and three 4FA / 3 sector transmission antennas 16 connected to the transmission bandpass filters 14 to radiate a signal to a mobile terminal. A wireless transmitter 11 to perform; One base station reception test section (RBTU) 22 connected to the reception bandpass filter 3 of the radio receiver 1 and the transmission bandpass filter 14 of the radio transmitter 11 branch the signal. Three splitters 15 and one base station transmission test unit (TBTU) 23 connected to the splitter 15; The base station monitoring unit 21 includes five transmission monitoring units (MON: 24) connected to the distributor 15 of the wireless transmission unit 11.

송신 모니터부(24)는 브레딩(Breathing)기능을 수행하기 위하여 송신출력을 검파한다.The transmission monitor 24 detects the transmission output in order to perform the brading function.

무선송신부(11)의 상향변환기(12)는 송신단계에서 기저대역 송신경로신호를 4.95MHz의 중간주파수대역의 신호로 변환하는 섹터인터페이스 카드(Sector Interface Card : SIC : 도시되지 않음)에 접속되어 있고, 무선수신부(1)의 수신분배셀프부(6)는 아날로그 공용카드(Analogue Common Card : ACC : 도시되지 않음)에 접속되어 있다.The up-converter 12 of the radio transmitter 11 is connected to a sector interface card (SIC: not shown) for converting the baseband transmission path signal into a signal of the intermediate frequency band of 4.95 MHz in the transmission step. The reception distribution self part 6 of the radio receiver 1 is connected to an analog common card (ACC: not shown).

무선주파수대역의 신호로 통신이 이루어지지 않는 음영지역 즉, 고층건물의 내부, 지하, 터널등이 발생하고, 이러한 음영지역등 사용자의 수가 적은 지역에 이동 통신서비스를 제공하기 위해서 기지국을 설치해야하는 바, 종래의 이동통신시스템의 기지국 무선주파수회로에 따르면 실치비용이 많이 든다는 문제점이 있었다.The base station should be installed to provide mobile communication service in the shaded area where the communication is not performed by the signal of the radio frequency band, that is, the inside of the high-rise building, the underground, the tunnel, etc. According to the base station radio frequency circuit of the conventional mobile communication system, there is a problem that the actual cost is high.

본 발명의 목적은 적은 비용으로 음영지역등 사용자의 수가 적은 지역의 사용자에게 이동 통신서비스를 제공할 수 있는 이동통신시스템의 소형기지국 무선주파수회로를 제공하는데 있다.An object of the present invention is to provide a small base station radio frequency circuit of a mobile communication system that can provide a mobile communication service to a user of a small number of users, such as a shaded area at low cost.

도 1은 종래의 기지국 무선주파수회로도1 is a conventional base station radio frequency circuit diagram

도 2는 본 발명에 따른 소형기지국 무선주파수회로도Figure 2 is a small base station radio frequency circuit diagram according to the present invention

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

RBPF : 수신대역통과여파기 TBPF : 송신대역통과여파기RBPF: Receive bandpass filter TBPF: Receive bandpass filter

LNA : 저잡음 증폭기 A : 안테나LNA: Low Noise Amplifier A: Antenna

DNC : 하향변환기 PA : 전력증폭기DNC: Downconverter PA: Power Amplifier

UPC : 상향변환기 RBTU : 기지국 수신시험부UPC: Upconverter RBTU: Base station reception test unit

TBTU : 기지국 송신시험부 Splitter : 분배기TBTU: Base Station Transmission Test Division Splitter: Splitter

MON : 송신모니터 RDSTS : 수신 분배셀프부MON: Transmit Monitor RDSTS: Receive Distribution Self

TDSTS : 송신 분배셀프부TDSTS: Transmission Distribution Self

도 2는 본 발명에 따른 소형기지국의 무선주파수회로도이다.2 is a radio frequency circuit diagram of a small base station according to the present invention.

도 2를 보면, 본 발명에 따른 코드분할 다중 접속방식에 의한 이동 통신시스템 소형기지국의 무선주파수회로는 이동 단말기의 안테나로부더 방사되는 전파를 흡수하고 공간 다이버서티(Diversity)를 갖는 2개의 4FA/3섹터 수신안테나(32)와, 상기 수신안테나(32)에 접속되어 무선주파수 대역의 신호만을 통과시키는 2개의 수신 대역통과 여파기(RBPF : 23)와, 상기 수신 대역통과 여파기(23)에 접속되어 신호를 저잡음 증폭하는 2개의 저잡음 증폭기(LNA : 34)와, 상기 저잡음 증폭기(34)에 접속되어 무선주파수 대역의 신호를 4.95MHz의 중간주파수 대역의 신호로 변환하는 2개의 하향변환기(DNC : 5)를 포함하는 무선수신부(31)와; 4.95MHz의 중간주파수 대역 신호를 입력하여 무선주파수 신호로 변환하는 1개의 상향변환기(UPC : 42)와, 상기 상향변환기(42)에 접속되어 신호의 전력을 증폭하는 1개의 전력증폭기(PA : 43)와, 상기 전력증폭기(43)에 접속되어 무선주파수대역의 신호단을 통과시키는 1개의 송신 대역통과여파기(TBPF : 44)와, 상기 송신 대역통과여파기(44)에 접속되어 신호를 이동 단말기로 방사하는 1개의 4FA/3섹터 송신안테나(46)를 포함하는 무선송신부(41)와; 상기 무선수신부(31)의 수신대역통과 여파기(33)에 접속된 1개의 기지국 수신 시험부(RBTU : 52)와, 상기 무선송신부(41)의 송신 대역통과여파기(44)에 접속되어 신호를 분기하는 1개의 분배기(Splitter : 45)와, 상기 분배기(45)에 접속된 1개의 기지국 송신시험부(TBTU : 53)를 포함하는 기지국 감시부(51)로 구성된다.2, a radio frequency circuit of a small base station of a mobile communication system according to a code division multiple access method according to the present invention absorbs radio waves radiated from an antenna of a mobile terminal and has two 4FA / s having spatial diversity. A three-sector receiving antenna 32, two receiving bandpass filters (RBPFs) 23 connected to the receiving antennas 32 for passing only signals in a radio frequency band, and the receiving bandpass filters 23; Two low-noise amplifiers (LNA: 34) for low noise amplification and two down-converters (DNC: 5) connected to the low-noise amplifier 34 to convert signals in a radio frequency band into signals in an intermediate frequency band of 4.95 MHz. A wireless receiving unit 31 including; One up-converter (UPC) 42 for inputting a 4.95 MHz intermediate frequency band signal and converting it into a radio frequency signal, and one power amplifier (PA: 43) connected to the up-converter 42 to amplify the power of the signal. ), A transmission bandpass filter (TBPF) 44 connected to the power amplifier 43 to pass a signal stage of a radio frequency band, and the transmission bandpass filter 44 to connect a signal to a mobile terminal. A wireless transmitter 41 comprising one radiating 4FA / 3 sector transmitting antenna 46; One base station reception test unit (RBTU) 52 connected to the reception band pass filter 33 of the radio receiver 31 and the transmission band pass filter 44 of the radio transmitter 41 branch the signal. And a base station monitoring unit 51 including one splitter 45 and one base station transmission test unit (TBTU) 53 connected to the splitter 45.

무선송신부(41)의 상향변환기(42)는 송신단계에서 기저대역 송신경로신호를 4.95MHz의 중간주파수대역의 신호로 변환하는 섹터인터페이스 카드(Sector Interface Card : SIC : 도시되지 않음)에 접속되어 있고, 무선수신부(31)의 하향변환기(35)는 아날로그 공용카드(Analogue Common Card : ACC : 도시되지 않음)에 접속되어 있다.The up-converter 42 of the radio transmitter 41 is connected to a sector interface card (SIC: not shown) for converting the baseband transmission path signal into a signal of the intermediate frequency band of 4.95 MHz in the transmission step. The down converter 35 of the radio receiver 31 is connected to an analog common card (ACC: not shown).

상술한 바와 같이, 본 발명의 이동 통신시스템의 무선주파수회로를 실장하는 소형기지국을 음영지역등 사용자의 수가 적은 지역에 설치함으로써, 적은비용으로 음영지역등 사용자의 수가 적은 지역의 사용자에게 이동 통신 서비스를제공할 수 있다.As described above, by installing a small base station in which the radio frequency circuit of the mobile communication system of the present invention is installed in a small number of users such as a shadow area, a mobile communication service is provided to a user of a small number of users such as a shadow area at a low cost. Can provide.

Claims (1)

이동 단말기의 안테나로부터 방사되는 전파를 흡수하고 공간 다이버서티(Diversity)를 갖는 2개의 4FA/3섹터 수신안테나(32)와, 상기 수신안테나(32)에 접속되어 무선주파수 대역의 신호만을 통과시키는 2개의 수신 대역통과 여파기(RBPF : 23)와, 상기 수신 대역통과 여파기(23)에 접속되어 신호를 저잡음 증폭하는 2개의 저잡음 증폭기(LNA : 34)와, 상기 저잡음 증폭기(34)에 접속되어 무선주파수 대역의 신호를 4.95MHz의 중간주파수 대역의 신호로 변환하는 2개의 하향변환기(DNC : 5)를 포함하는 무선수신부(31)와; 4.95MHz의 중간주파수 대역 신호를 입력하여 무선주파수 신호로 변환하는 1개의 상향변환기(UPC : 42)와, 상기 상향변환기(42)에 접속되어 신호의 전력을 증폭하는 1개의 전력증폭기(PA : 43)와, 상기 전력증폭기(43)에 접속되어 무선주파수 대역의 신호만을 통과시키는 1개의 송신 대역통과여파기(TEPF : 44)와, 상기 송신 대역통과여파기(44)에 접속되어 신호를 이동 단말기로 방사하는 1개의 4FA/3섹더 송신안테나(46)를 포함하는 무선송신부(41)와; 상기 무선수신부(31)의 수신 대역통과 여파기(33)에 접속된 1개의 기지국 수신 시험부(RBTU : 52)와, 상기 무선송신부(41)의 송신 대역통과여파기(44)에 접속되어 신호를 분기하는 1개의 분배기(splitler : 45)와, 상기 분배기(45)에 접속된 1개의 기지국 송신시험부(TBTU : 53)를 포함하는 기지국 감시부(51)로 구성되는 것을 특징으로 하는 코드분할 다중접속방식에 의한 이동 통신시스템 소형기지국의 무선주파수회로.Two 4FA / 3 sector receiving antennas 32 which absorb radio waves radiated from the antenna of the mobile terminal and have spatial diversity, and 2 which are connected to the receiving antennas 32 to pass only signals in a radio frequency band. Two reception bandpass filters (RBPF) 23, two low noise amplifiers (LNA: 34) connected to the reception bandpass filter 23 for low noise amplification of the signal, and a low noise amplifier 34 for radio frequency A radio receiver 31 comprising two downconverters (DNC) 5 for converting a band signal into a signal of an intermediate frequency band of 4.95 MHz; One up-converter (UPC) 42 for inputting a 4.95 MHz intermediate frequency band signal and converting it into a radio frequency signal, and one power amplifier (PA: 43) connected to the up-converter 42 to amplify the power of the signal. ), A transmission bandpass filter (TEPF) 44 connected to the power amplifier 43 to pass only signals in a radio frequency band, and the transmission bandpass filter 44 to radiate a signal to a mobile terminal. A wireless transmitter 41 including one 4FA / 3 sector transmission antenna 46; One base station reception test section (RBTU) 52 connected to the reception band pass filter 33 of the radio receiver 31 and the transmission band pass filter 44 of the radio transmitter 41 branch the signal. Code division multiple access, comprising: a splitter (45) for splitting; and a base station monitoring unit (51) including one base station transmission test unit (TBTU: 53) connected to the splitter (45). A radio frequency circuit of a small base station of a mobile communication system by a scheme.
KR1019960058198A 1996-11-27 1996-11-27 Small base station apparatus of cdma mobile communication system KR100372515B1 (en)

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JPH0529993A (en) * 1991-07-19 1993-02-05 Nippon Telegr & Teleph Corp <Ntt> Diversity circuit in single frequency alternate communication system for mobile communication
JP3175867B2 (en) * 1993-03-05 2001-06-11 株式会社エヌ・ティ・ティ・ドコモ Diversity device for mobile radio base station
JPH06334575A (en) * 1993-05-24 1994-12-02 Nippon Telegr & Teleph Corp <Ntt> Spread spectrum communication reception equipment
KR970000161B1 (en) * 1993-11-12 1997-01-04 이이용 Radio repeater under ground
JPH07297750A (en) * 1994-04-27 1995-11-10 Kokusai Electric Co Ltd Transmission/reception mixer circuit

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