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WO2013176356A1 - Remote wireless base station device having in-house expandability and in-building relay system - Google Patents

Remote wireless base station device having in-house expandability and in-building relay system Download PDF

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Publication number
WO2013176356A1
WO2013176356A1 PCT/KR2012/009817 KR2012009817W WO2013176356A1 WO 2013176356 A1 WO2013176356 A1 WO 2013176356A1 KR 2012009817 W KR2012009817 W KR 2012009817W WO 2013176356 A1 WO2013176356 A1 WO 2013176356A1
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WO
WIPO (PCT)
Prior art keywords
base station
signal
digital communication
remote wireless
building
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Application number
PCT/KR2012/009817
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French (fr)
Korean (ko)
Inventor
최병도
Original Assignee
유니트론 주식회사
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Publication date
Application filed by 유니트론 주식회사 filed Critical 유니트론 주식회사
Priority to CN201280073385.3A priority Critical patent/CN104380619A/en
Publication of WO2013176356A1 publication Critical patent/WO2013176356A1/en

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    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems

Definitions

  • the present invention relates to an in-building relay system, and more particularly, to a signal transmission between a base station control unit and a remote wireless base station device installed in a building in a distributed base station system, and a distributed device installed in a plurality of shaded areas in the remote wireless base station device and a building.
  • the present invention relates to a technology in which signal transmission between all digital methods is performed without going through an analog signal conversion process.
  • a mobile communication service system generally consists of a base station, base station controller, switching center and terminal station.
  • the base station and the terminal station communicate in a constant frequency band, each base station has a constant call radius. Therefore, by arranging a plurality of base stations as appropriate, the call radius of each base station overlaps each other, thereby expanding the area where the call is possible. However, even if the entire city is covered by the arrangement of such a plurality of base stations, a call-shadowed area where a call is not possible in an island area, a large building underground space, and a high-rise building is generated.
  • One of the ways to solve such a call shadow area occurrence and to expand the area is to install a relay system.
  • Such a relay system includes an optical relay system, an RF relay system, a microwave relay system, and an in-building relay system according to an application area or a relay method.
  • the optical relay system is used in the city center or the outlying area
  • the microwave relay system is used when the visible distance is several Km
  • the in-building relay system may be used for the apartment complex, large building and underground parking lot.
  • Such a conventional in-building relay system is installed in a base station, a rooftop of a building, and a master device wirelessly or wiredly connected to the base station, and a plurality of distributed devices respectively connected to the master device by wire and installed in a plurality of shaded areas of the building. It may include.
  • the base station and the master device transmit and receive RF signals (analog signals) wirelessly or wired, and the master device and the plurality of distributed devices transmit and receive digital signals.
  • the RF signal (analog signal) transmitted from the base station is distorted under the influence of noise or the like in the process of being transmitted to the master device, so that the deteriorated RF signal is received by the master device.
  • the deteriorated RF signal is converted into a digital signal and transmitted to the plurality of dispersers, the plurality of dispersers receive a signal distorted by noise or the like, and eventually the shadow area covered by the plurality of dispersers is covered. Since there is a problem in that low-quality signals are received in the located terminals, there is a problem in that call quality deteriorates.
  • a distributed base station system signal transmission between a base station control unit and a remote wireless base station device installed in a building and a signal transmission between the remote wireless base station device and distributed devices installed in a plurality of shaded areas in a building are all performed digitally without going through an analog signal conversion process.
  • An in-building relay system includes a base station controller, a remote wireless base station apparatus connected to the base station controller with a first wire and installed in a building, and a remote wireless base station apparatus connected to a second wire with a second wire. And a plurality of dispersers installed in one of the plurality of shaded areas of the remote wireless base station, wherein the remote wireless base station apparatus transmits / receives information through a first digital communication scheme with the base station controller through the first wire. And transmit and receive information in a second digital communication method through the second wires connected to each other, and perform signal conversion between the first digital communication method and the second digital communication method without undergoing an analog signal conversion process. A signal transmitted to or received from the second digital communication scheme and the shadowed area; And translating the same communication signal.
  • the first wire may be an optical cable.
  • the second wire may be an Unshielded Twisted Pair (UTP) cable.
  • UTP Unshielded Twisted Pair
  • the first digital communication method may be a common public radio interface (CPRI) or an OBSAI (Open Base Station Architecture Initiative) communication method.
  • CPRI common public radio interface
  • OBSAI Open Base Station Architecture Initiative
  • the second digital communication method may be a gigabit Ethernet communication method.
  • the remote wireless base station apparatus may include an AC power / DC power converter for providing DC power required for the operation of the plurality of distributed devices in a Power Over Ethernet (POE) method.
  • POE Power Over Ethernet
  • the plurality of dispersing apparatuses may include a DC power supply / DC power converter for converting DC power provided by the Ethernet power supply method into DC power required for operation of an internal configuration circuit.
  • a remote wireless base station apparatus comprising: a CPRI / OBSAI signal processor connected to a base station controller via a first wire and transmitting and receiving information to and from the base station controller in a first digital communication scheme; And convert the first digital communication signal received from the CPRI / OBSAI signal processor into a second digital communication signal without going through an analog signal conversion process, and are each connected by a second wire and installed in a shadow area of a building. It includes a master UTP interface transceiver for converting the signal of the second digital communication method received from the distributed device to the signal of the first digital communication method without undergoing an analog signal conversion process.
  • the remote wireless base station apparatus may further include an AC power / DC power converter for providing DC power required for the operation of the plurality of distributed devices in a Power Over Ethernet (POE) method.
  • POE Power Over Ethernet
  • the remote wireless base station apparatus transmits a signal transmitted from the base station controller to inside and outside a building or receives signals from a plurality of terminals located inside and outside the building and transmits the signal to the base station controller through the CPRI / OBSAI signal processor. It may further include an output unit.
  • a signal transmission between a base station controller and a remote wireless base station apparatus installed in a building, and a plurality of shaded areas in the building and the remote wireless base station apparatus is all done digitally without going through the analog signal conversion process, so that it is possible to easily solve the shade area of mobile communication that occurs in large buildings, multi-family houses, mall buildings, etc.
  • the signal from the base station control unit is not influenced by noise in the process of transmitting the signals from the base station controller to the plurality of distributed devices located in the shadowed area, high quality signals may be transmitted to the plurality of distributed devices located in the shadowed area.
  • FIG. 1 is a view showing the configuration of an in-building relay system according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating a detailed configuration of the remote radio base station apparatus shown in FIG. 1.
  • FIG. 3 is a diagram illustrating a detailed configuration of the master UTP interface transceiver shown in FIG. 2.
  • FIG. 4 is a view showing a detailed configuration of the dispersion apparatus shown in FIG.
  • FIG. 5 is a diagram illustrating a detailed configuration of the distributed UTP interface transceiver shown in FIG. 4.
  • FIG. 1 is a view showing the configuration of an in-building relay system according to an embodiment of the present invention.
  • an in-building relay system includes a base station controller 1, a base station controller 1, a remote wireless base station apparatus 2 connected to a first wire and installed in a building, and a remote wireless base station apparatus. And a plurality of dispersing apparatuses 3, which are connected to each of the second and second wires and are respectively installed in one of the plurality of shaded areas of the building. Furthermore, when the number of the plurality of distributing apparatuses 3 exceeds the number of ports provided by the remote wireless base station apparatus 2 or the maximum transmission distance of the signal transmitted by the remote wireless base station apparatus 2 to the distributing apparatus, In order to increase, the hub expansion unit 4 may be further provided.
  • the remote wireless base station apparatus 2 transmits and receives information to and from the base station control unit 1 via a first wired line in a first digital communication system, and connects through a plurality of distribution apparatuses 3 (a hub expansion unit 4). It also transmits and receives information in a second digital communication method through a second wire connected to each other), and performs signal conversion between the first digital communication method and the second digital communication method without going through an analog signal conversion process.
  • the distributing device 3 converts a signal of a second digital communication method and a mobile communication signal transmitted to or received from the shaded area.
  • the first wire may be an optical cable, and any transmission medium capable of transmitting and receiving information between the base station controller 1 and the remote wireless base station device 2 may be used without limitation. have.
  • the second wire may be an Unshielded Twisted Pair (UTP) cable, and any transmission medium capable of transmitting and receiving information between the remote wireless base station apparatus 2 and the plurality of distribution apparatuses 3 in the second digital communication scheme may be used. It may be.
  • the first digital communication method may be a public public radio interface (CPRI) or an OBSAI (Open Base Station Architecture Initiative) communication method.
  • CPRI public public radio interface
  • OBSAI Open Base Station Architecture Initiative
  • the base station control unit 1 and the remote wireless base station apparatus 2 may transmit and receive information in a CPRI communication method or an OBSAI communication method.
  • the second digital communication method may be a gigabit Ethernet communication method. That is, the remote wireless base station apparatus 2 and the plurality of distributing apparatuses (including the plurality of distributing apparatuses connected through the hub expansion unit 4) 3 can transmit and receive information through the Gigabit Ethernet communication method. Accordingly, the base station controller 1 and the remote wireless base station apparatus 2 transmit and receive digital signals other than analog signals through optical cables, and the remote wireless base station apparatus 2 and the plurality of distributed apparatuses 3 also convert analog signals. Since the digital signal is transmitted and received without passing through, the high quality signal which is not affected by noise or the like can be transmitted in the process of transmitting the signal from the base station controller 1 to the plurality of distributed devices through the remote wireless base station device 2. have.
  • the remote wireless base station apparatus 2 may include an AC power / DC power converter that provides DC power required for the operation of the plurality of distributed devices 3 in a Power Over Ethernet (POE) method. .
  • the AC power / DC power converter will be described later.
  • the plurality of distributing apparatuses 3 may include a DC power / DC power converter for converting the DC power provided by the Ethernet power supply method into the DC power required for the operation of the internal circuit.
  • the DC power / DC power converter will be described later. Since the plurality of distributed devices (3) operates the internal configuration circuit using a DC power provided by the Ethernet power supply method, a separate AC power / DC power converter is not required and the power facility construction according to this can be omitted. have.
  • FIG. 2 is a diagram illustrating a detailed configuration of the remote radio base station apparatus shown in FIG. 1.
  • the remote wireless base station apparatus 2 includes a CPRI / OBSAI signal processor 10, an indoor / outdoor wireless output unit 11, a master UTP interface transceiver 19, and an AC power source / DC power converter 20. And a processor 21.
  • the CPRI / OBSAI signal processor 10 is connected to the base station controller 1 through a first cable, in an embodiment, through an optical cable, and communicates with the base station controller 1 in a first digital communication scheme, in an embodiment, a public public air interface (CPRI). Or transmit / receive information by OBSAI communication method.
  • a first cable in an embodiment, through an optical cable
  • CPRI public public air interface
  • the indoor / outdoor wireless output unit 11 includes a digital / analog converter 12, a rising converter 13, a high output amplifier 14, a transmission / reception filter 15, a low noise amplifier 16, a falling converter 17 and an analog /
  • the digital conversion unit 18 includes the CPRI / OBSAI signal processing unit 10 by transmitting a signal transmitted from the base station controller 1 to the inside and outside the building or receiving signals from a plurality of terminals (not shown) located inside and outside the building. It can transmit to the base station control unit 1 through.
  • the digital / analog converter 12 converts the signal of the first digital communication method into an analog signal
  • the rising converter 13 converts the analog signal converted by the digital / analog converter 12 into the frequency band of the mobile communication signal.
  • the high output amplifier 14 amplifies the analog signal output from the rising converter 13
  • the transmission / reception filter 15 uses the antenna ANT to convert the analog signal amplified by the high output amplifier 14.
  • Radiating into space the low noise amplifier 16 amplifies the weak mobile communication signal received from the terminal through the antenna ANT with low noise, and the down converter 17 amplifies the mobile communication signal amplified by the low noise amplifier 16. Is converted into the intermediate frequency band, and the analog-digital converter 18 converts the mobile communication signal output from the falling converter 17 into a digital signal.
  • the master UTP interface transceiver 19 converts the signal of the first digital communication method received from the CPRI / OBSAI signal processor 10 into the signal of the second digital communication method without going through an analog signal conversion process and is connected through a UTP cable.
  • the signal of the second digital communication method received from the distributing device 3 is converted into the signal of the first digital communication method without undergoing an analog signal conversion process.
  • the signal of the first digital communication method may be a signal of the CPRI communication method or the signal of the OBSAI communication method
  • the signal of the second digital communication method may be a gigabit Ethernet signal.
  • the master UTP interface transceiver 19 may be implemented by being integrated with the CPRI / OBSAI signal processor 10 and one board, or may be implemented on separate boards.
  • the AC power / DC power converter 20 converts AC power into DC power in order to supply DC power necessary for the operation of the plurality of distributed devices 3 connected to the remote wireless base station device 2 and the UTP cable.
  • the UTP interface transceiver 19 provides the DC power applied from the AC power / DC power converter 20 to the plurality of distributed devices 3 through the Power Over Ethernet (POE).
  • POE Power Over Ethernet
  • the processor unit 21 controls the operation of the rising converter 13, the high output amplifier 14, and the falling converter 17.
  • FIG. 3 is a diagram illustrating a detailed configuration of the master UTP interface transceiver shown in FIG. 2.
  • the master UTP interface transceiver 19 includes a digital to digital converter 191, a gigabit physical layer converter 192, and an Ethernet power supply 193.
  • the digital / digital conversion unit 191 is connected to the CPRI / OBSAI signal processing unit 10 by internal wiring, and converts a signal of one serial first digital communication method into an n (natural number) pair of parallel second digital communication methods.
  • the signal is converted into a parallel UTP digital signal in an embodiment, and the inverse conversion thereof is also performed.
  • the digital / digital conversion unit 191 is a signal of one first digital communication method, in one embodiment, a CPRI communication method or an OBSAI.
  • the communication signal can be converted into four pairs of parallel UTP digital signals. This is only an example and may be changed according to the situation of the system.
  • the gigabit physical layer converter 192 converts the UTP digital signal converted by the digital / digital conversion unit 191 into a gigabit Ethernet signal so as to be transmitted through the UTP cable, and performs inverse conversion thereof.
  • up to eight distributed devices can be connected to one remote wireless base station device by applying two 1: 4 methods commercially available for the Internet, in which a digital signal can be transmitted and received using a UTP cable.
  • the Ethernet power supply 193 provides the DC power applied from the AC power / DC power converter 20 to the plurality of distributed devices 3 through the UTP cable by the Ethernet power supply method (POE).
  • FIG. 4 is a view showing a detailed configuration of the dispersion apparatus shown in FIG.
  • the dispersion apparatus 3 includes a distributed UTP interface transceiver 3, a digital / analog converter 31, a distributed rising converter 32, a high output amplifier 33, a distributed transmit / receive filter 34, and low noise.
  • An amplifier 35, a distributed down converter 36, an analog / digital converter 37, a DC power supply / DC power converter 38, and a distributed processor unit 39 are included.
  • the distributed UTP interface transceiver 30 transmits and receives a signal of the second digital communication method with the remote wireless base station apparatus 2 through the UTP cable.
  • the digital / analog converter 31 converts the second digital communication signal received by the distributed UTP interface transceiver 30 into an analog signal having an intermediate frequency band.
  • the distributed rising converter 32 raises the analog signal having the intermediate frequency band to the frequency band of the mobile communication signal.
  • the high output amplifier 33 amplifies the analog signal raised to the frequency band of the mobile communication signal.
  • the distributed transmission / reception filter 34 radiates the analog signal amplified by the high power amplifier 33 to the space of the shaded area through the antenna ANT.
  • the low noise amplifier 35 amplifies the weak mobile communication signal received through the antenna ANT connected to the distributed transmission / reception filter 34 from the terminal located in the shadow area with low noise.
  • the distributed down converter 36 down converts the low noise amplified mobile communication signal from the low noise amplifier 36 to an intermediate frequency band.
  • the analog / digital converter 37 converts the mobile communication signal converted by the distributed down converter 36 into a digital signal, that is, a signal of a second digital communication method.
  • the converted second digital communication signal may be transmitted to the remote wireless base station apparatus 2 through the distributed UTP interface transceiver 30.
  • the DC power supply / DC power converter 38 converts the DC power applied by the Ethernet power supply method through the distributed UTP interface transceiver 30 to the DC power required for the operation of the internal configuration circuit of the dispersion apparatus 3. Accordingly, the dispersion apparatus 3 does not have to be provided with a separate AC power / DC power converter in order to obtain a DC power required for the operation of the internal circuit, and thus construction of a power supply can be omitted.
  • the distributed processor unit 39 controls the operations of the distributed rising converter 32, the high power amplifier 33, and the distributed falling converter 36.
  • FIG. 5 is a diagram illustrating a detailed configuration of the distributed UTP interface transceiver shown in FIG. 4.
  • the distributed UTP interface transceiver 30 includes an Ethernet power supply 300, a gigabit physical layer converter 301, and a gigabit Ethernet signal processor 302.
  • the Ethernet power supply 300 applies DC power supplied from the remote wireless base station device 2 to the Ethernet power supply method (POE) via the UTP cable to the DC power / DC power converter 38.
  • POE Ethernet power supply method
  • the gigabit physical layer converter 301 converts a signal of the second digital communication method, eg, a gigabit Ethernet signal, received from the remote wireless base station apparatus 2 through a UTP cable into a UTP digital signal, and also performs inverse conversion thereof.
  • a signal of the second digital communication method eg, a gigabit Ethernet signal
  • the gigabit Ethernet signal processing unit 302 converts a parallel digital signal of n (natural number) pairs in series and performs inverse conversion thereof. In one embodiment, four pairs of parallel UTP digital signals are serially converted and inversely transformed.
  • the present invention can be applied to system development in the field of mobile communication.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

A remote wireless base station device having in-house expandability and an in-building relay system is disclosed. The remote wireless base station device according to one embodiment of the present invention includes: a CPRI/OBSAI signal processing unit that is connected to a base station control unit by means of a first cable and that transmits information to and receives information from the base station control unit using a first digital communication scheme; and a master UTP interface transceiver that converts a first digital communication type signal received from the CPRI/OBSAI signal processing unit into a second digital communication type signal without an analog signal conversion process, and converts the second digital communication type signal, received from a plurality of distribution devices that are connected to each other by means of a second cable and installed at the shaded regions of buildings, into the first digital communication type signal without an analog signal conversion process.

Description

구내 확장성을 갖는 원격 무선 기지국 장치 및 인빌딩 중계 시스템Remote wireless base station device and in-building relay system with premises scalability
본 발명은 인빌딩 중계 시스템에 관한 것으로, 더욱 상세하게는 분산형 기지국 시스템에서 기지국 제어부와 빌딩에 설치된 원격 무선 기지국 장치 간 신호전송 및 상기 원격 무선 기지국 장치와 빌딩 내 다수의 음영지역마다 설치된 분산장치 간 신호전송이 아날로그 신호변환 과정을 거치지 않고 모두 디지털 방식으로 이루어지는 기술에 관한 것이다.The present invention relates to an in-building relay system, and more particularly, to a signal transmission between a base station control unit and a remote wireless base station device installed in a building in a distributed base station system, and a distributed device installed in a plurality of shaded areas in the remote wireless base station device and a building. The present invention relates to a technology in which signal transmission between all digital methods is performed without going through an analog signal conversion process.
이동 통신 서비스 시스템은 일반적으로 기지국, 기지국 제어기, 교환국 및 단말국으로 구성된다. 기지국과 단말국은 일정한 주파수 대역으로 통신하며, 각 기지국은 일정한 통화반경을 갖는다. 따라서, 다수의 기지국을 적절히 배치하여 각 기지국의 통화반경을 서로 겹치게 하여 통화 가능한 지역을 넓힌다. 그러나, 이러한 다수의 기지국의 배치에 의해 도시 전체를 커버 하더라도 도서지방이나 대형 건물 지하공간 및 고층 빌딩의 내부에서는 통화가 불가능한 통화 음영 지역이 발생한다. 이러한 통화 음영 지역 발생을 해결하고 영역을 확장시키기 위한 방안 중 하나가 중계 시스템의 설치이다. 이러한 중계 시스템은 적용 지역이나 중계 방식에 따라 광 중계시스템, RF 중계시스템, 마이크로웨이브 중계시스템 및 인빌딩(In-building) 중계시스템 등이 있다. 도심이나 외곽 지역 등에는 광 중계시스템이 사용되며, 가시거리가 수 Km인 경우에는 마이크로웨이브 중계시스템이 사용되고, 아파트 단지, 대형건물 및 지하 주차장 등에는 인빌딩 중계시스템이 사용될 수 있다.A mobile communication service system generally consists of a base station, base station controller, switching center and terminal station. The base station and the terminal station communicate in a constant frequency band, each base station has a constant call radius. Therefore, by arranging a plurality of base stations as appropriate, the call radius of each base station overlaps each other, thereby expanding the area where the call is possible. However, even if the entire city is covered by the arrangement of such a plurality of base stations, a call-shadowed area where a call is not possible in an island area, a large building underground space, and a high-rise building is generated. One of the ways to solve such a call shadow area occurrence and to expand the area is to install a relay system. Such a relay system includes an optical relay system, an RF relay system, a microwave relay system, and an in-building relay system according to an application area or a relay method. The optical relay system is used in the city center or the outlying area, the microwave relay system is used when the visible distance is several Km, and the in-building relay system may be used for the apartment complex, large building and underground parking lot.
이러한 종래 인빌딩 중계시스템은 기지국, 빌딩의 옥상 등에 설치되며 상기 기지국과 무선 또는 유선으로 연결되는 마스터 장치, 상기 마스터 장치와 유선으로 연결되며 상기 빌딩의 다수의 음영지역에 각기 설치되는 다수의 분산장치를 포함할 수 있다. Such a conventional in-building relay system is installed in a base station, a rooftop of a building, and a master device wirelessly or wiredly connected to the base station, and a plurality of distributed devices respectively connected to the master device by wire and installed in a plurality of shaded areas of the building. It may include.
상기 기지국과 마스터 장치는 무선 또는 유선으로 RF신호(아날로그 신호)를 송수신하며, 상기 마스터 장치와 다수의 분산장치는 디지털 신호를 송수신한다.  The base station and the master device transmit and receive RF signals (analog signals) wirelessly or wired, and the master device and the plurality of distributed devices transmit and receive digital signals.
이로 인해서 상기 기지국으로부터 송신된 RF 신호(아날로그 신호)가 마스터 장치로 전송되는 과정에서 잡음 등의 영향을 받아 왜곡되어, 품질이 저하된 RF신호가 마스터 장치에 수신되고, 이에 따라 마스터 장치는 품질이 저하된 RF 신호를 디지털 신호로 변환해서 상기 다수의 분산장치로 전송하므로, 상기 다수의 분산장치에는 잡음 등에 의해 왜곡된 신호가 수신되고, 결국 상기 다수의 분산장치가 커버(cover)하는 음영지역에 위치한 단말기들에는 저품질의 신호가 수신되는 문제점이 발생하므로, 통화 품질 등이 저하되는 문제점이 발생하게 된다. As a result, the RF signal (analog signal) transmitted from the base station is distorted under the influence of noise or the like in the process of being transmitted to the master device, so that the deteriorated RF signal is received by the master device. Since the deteriorated RF signal is converted into a digital signal and transmitted to the plurality of dispersers, the plurality of dispersers receive a signal distorted by noise or the like, and eventually the shadow area covered by the plurality of dispersers is covered. Since there is a problem in that low-quality signals are received in the located terminals, there is a problem in that call quality deteriorates.
분산형 기지국 시스템에서 기지국 제어부와 빌딩에 설치된 원격 무선 기지국 장치 간 신호전송 및 상기 원격 무선 기지국 장치와 빌딩 내 다수의 음영지역에 설치된 분산장치 간 신호전송이 아날로그 신호변환 과정을 거치지 않고 모두 디지털 방식으로 이루어져 다수의 분산장치에 고품질의 신호가 전송되도록 하는, 구내 확장성을 갖는 원격 무선 기지국 장치 및 인빌딩 중계 시스템이 제안된다.In a distributed base station system, signal transmission between a base station control unit and a remote wireless base station device installed in a building and a signal transmission between the remote wireless base station device and distributed devices installed in a plurality of shaded areas in a building are all performed digitally without going through an analog signal conversion process. A remote wireless base station device and an in-building relay system having on-site scalability, which is configured to transmit high quality signals to a plurality of distributed devices, are proposed.
본 발명의 해결하고자 하는 과제는 이상에서 언급한 과제로 제한되지 않으며, 언급되지 않은 또 다른 과제들은 아래의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다.The problem to be solved of the present invention is not limited to the above-mentioned problem, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.
본 발명의 일 양상에 따른 인빌딩 중계 시스템은, 기지국 제어부, 상기 기지국 제어부와 제1유선으로 연결되며 빌딩에 설치되는 원격 무선 기지국 장치 및 상기 원격 무선 기지국 장치와 제2유선으로 각기 연결되며 상기 빌딩의 다수의 음영지역 중 하나에 설치되는 다수의 분산장치를 포함하며, 상기 원격 무선 기지국 장치는, 상기 기지국 제어부와 상기 제1유선을 통해 정보를 제1디지털 통신방식으로 송수신하며 상기 다수의 분산장치와 각기 연결된 상기 제2유선을 통해 제2디지털 통신방식으로 정보를 송수신하며, 상기 제1디지털 통신방식 및 제2디지털 통신방식 간 신호변환을 아날로그 신호변환 과정을 거치지 않고 수행하며, 상기 분산장치는, 상기 제2디지털 통신방식의 신호와, 상기 음영지역으로 송출되거나 상기 음영지역으로부터 수신되는 이동통신신호를 상호 변환한다.An in-building relay system according to an aspect of the present invention includes a base station controller, a remote wireless base station apparatus connected to the base station controller with a first wire and installed in a building, and a remote wireless base station apparatus connected to a second wire with a second wire. And a plurality of dispersers installed in one of the plurality of shaded areas of the remote wireless base station, wherein the remote wireless base station apparatus transmits / receives information through a first digital communication scheme with the base station controller through the first wire. And transmit and receive information in a second digital communication method through the second wires connected to each other, and perform signal conversion between the first digital communication method and the second digital communication method without undergoing an analog signal conversion process. A signal transmitted to or received from the second digital communication scheme and the shadowed area; And translating the same communication signal.
상기 제1유선은 광케이블일 수 있다.The first wire may be an optical cable.
상기 제2유선은 UTP(Unshielded Twisted Pair) 케이블일 수 있다.The second wire may be an Unshielded Twisted Pair (UTP) cable.
상기 제1디지털 통신방식은 공공 공중 무선 인터페이스(Common Public Radio Interface : CPRI) 또는 OBSAI(Open Base Station Architecture Initiative) 통신방식일 수 있다.The first digital communication method may be a common public radio interface (CPRI) or an OBSAI (Open Base Station Architecture Initiative) communication method.
상기 제2디지털 통신방식은, 기가비트 이더넷(Gigabit Ethernet) 통신방식일 수 있다.The second digital communication method may be a gigabit Ethernet communication method.
상기 원격 무선 기지국 장치는, 상기 다수의 분산장치의 동작에 필요한 직류전원을 이더넷 전원 공급방식(Power Over Ethernet : POE) 방식으로 제공하는 교류전원/직류전원 변환장치를 구비할 수 있다.The remote wireless base station apparatus may include an AC power / DC power converter for providing DC power required for the operation of the plurality of distributed devices in a Power Over Ethernet (POE) method.
상기 다수의 분산장치는, 상기 이더넷 전원 공급방식으로 제공되는 직류전원을 내부구성회로의 동작에 필요한 직류 전원으로 변환하는 직류전원/직류전원 변환장치를 구비할 수 있다.The plurality of dispersing apparatuses may include a DC power supply / DC power converter for converting DC power provided by the Ethernet power supply method into DC power required for operation of an internal configuration circuit.
본 발명의 다른 양상에 따른 원격 무선 기지국 장치는, 기지국 제어부와 제1유선으로 연결되어, 상기 기지국 제어부와 제1디지털 통신방식으로 정보를 송수신하는 CPRI/OBSAI 신호처리부; 와 상기 CPRI/OBSAI 신호처리부로부터 수신된 제1디지털 통신방식의 신호를 아날로그 신호변환 과정을 거치지 않고 제2디지털 통신방식의 신호로 변환하고 제2유선으로 각기 연결되고 빌딩의 음영지역에 설치된 다수의 분산장치로부터 수신된 제2디지털 통신방식의 신호를 아날로그 신호변환 과정을 거치지 않고 제1디지털 통신방식의 신호로 변환하는 마스터 UTP 인터페이스 송수신기를 포함한다.According to another aspect of the present invention, there is provided a remote wireless base station apparatus comprising: a CPRI / OBSAI signal processor connected to a base station controller via a first wire and transmitting and receiving information to and from the base station controller in a first digital communication scheme; And convert the first digital communication signal received from the CPRI / OBSAI signal processor into a second digital communication signal without going through an analog signal conversion process, and are each connected by a second wire and installed in a shadow area of a building. It includes a master UTP interface transceiver for converting the signal of the second digital communication method received from the distributed device to the signal of the first digital communication method without undergoing an analog signal conversion process.
상기 원격 무선 기지국 장치는, 상기 다수의 분산장치의 동작에 필요한 직류전원을 이더넷 전원 공급방식(Power Over Ethernet : POE) 방식으로 제공하는 교류전원/직류전원 변환장치를 더 구비할 수 있다.The remote wireless base station apparatus may further include an AC power / DC power converter for providing DC power required for the operation of the plurality of distributed devices in a Power Over Ethernet (POE) method.
상기 원격 무선 기지국 장치는, 상기 기지국 제어부로부터 송신된 신호를 빌딩 내외부로 송출하거나 상기 빌딩 내외부에 위치한 다수의 단말기로부터 신호를 수신하여 상기 CPRI/OBSAI 신호처리부를 통해 상기 기지국 제어부로 송신하는 옥내외 무선출력부를 더 구비할 수 있다.The remote wireless base station apparatus transmits a signal transmitted from the base station controller to inside and outside a building or receives signals from a plurality of terminals located inside and outside the building and transmits the signal to the base station controller through the CPRI / OBSAI signal processor. It may further include an output unit.
본 발명의 실시예에 따른 구내 확장성을 갖는 원격 무선 기지국 장치 및 인빌딩 중계 시스템에 따르면, 기지국 제어부와 빌딩에 설치된 원격 무선 기지국 장치 간 신호전송 및 상기 원격 무선 기지국 장치와 빌딩 내 다수의 음영지역에 설치된 분산장치 간 신호전송이 아날로그 신호변환 과정을 거치지 않고 모두 디지털 방식으로 이루어짐으로써, 대형 건물, 공동 주택, 상가 건물 등에서 발생하는 이동통신 전파 음영지역을 손쉽게 해소할 수 있다.According to the remote wireless base station apparatus and in-building relay system having premises scalability according to an embodiment of the present invention, a signal transmission between a base station controller and a remote wireless base station apparatus installed in a building, and a plurality of shaded areas in the building and the remote wireless base station apparatus The signal transmission between the distributed devices installed in the system is all done digitally without going through the analog signal conversion process, so that it is possible to easily solve the shade area of mobile communication that occurs in large buildings, multi-family houses, mall buildings, etc.
또한 기지국 제어부로부터 신호가 원격 무선 기지국 장치를 통해서 음영지역에 위치한 다수의 분산장치로 전송되는 과정에서 잡음 등에 의해 영향을 받지 않으므로 음영지역에 위치한 다수의 분산장치에 고품질의 신호가 전송될 수 있다.In addition, since the signal from the base station control unit is not influenced by noise in the process of transmitting the signals from the base station controller to the plurality of distributed devices located in the shadowed area, high quality signals may be transmitted to the plurality of distributed devices located in the shadowed area.
기존 건물 내부에서 배선 설치의 어려움을 해소하기 위해서 기 설치된 UTP 케이블을 최대한 활용하고 별도로 전원배선이 필요치 않게 디지털 신호와 전원을 UTP 케이블을 동시에 전송하는 이더넷 전원공급방식(POE) 기술을 적용함으로써, 통신 사업자의 네트워크 구축비용을 절감하고 효율적인 운용, 유지보수가 가능하도록 할 수 있다.In order to solve the difficulties of wiring installation inside the existing building, by utilizing the pre-installed UTP cable and applying the Ethernet power supply method (POE) technology that transmits digital signals and power at the same time without the need for separate power wiring, It can reduce the operator's network construction cost and enable efficient operation and maintenance.
도 1은 본 발명의 실시예에 따른 인빌딩 중계 시스템의 구성을 나타낸 도면이다. 1 is a view showing the configuration of an in-building relay system according to an embodiment of the present invention.
도 2는 도 1에 도시된 원격 무선 기지국 장치의 세부 구성을 나타낸 도면이다.FIG. 2 is a diagram illustrating a detailed configuration of the remote radio base station apparatus shown in FIG. 1.
도 3은 도 2에 도시된 마스터 UTP 인터페이스 송수신기의 세부 구성을 나타낸 도면이다.FIG. 3 is a diagram illustrating a detailed configuration of the master UTP interface transceiver shown in FIG. 2.
도 4는 도 1에 도시된 분산장치의 세부 구성을 나타낸 도면이다.4 is a view showing a detailed configuration of the dispersion apparatus shown in FIG.
도 5는 도 4에 도시된 분산 UTP 인터페이스 송수신기의 상세 구성을 나타낸 도면이다.FIG. 5 is a diagram illustrating a detailed configuration of the distributed UTP interface transceiver shown in FIG. 4.
이하에서는 첨부한 도면을 참조하여 본 발명의 실시예를 상세히 설명한다. 본 발명의 실시예를 설명함에 있어 관련된 공지 기능 또는 구성에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략할 것이다. 또한, 후술 되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례 등에 따라 달라질 수 있다. 그러므로 그 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention; In describing the embodiments of the present invention, when it is determined that detailed descriptions of related known functions or configurations may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to intention or custom of a user or an operator. Therefore, the definition should be made based on the contents throughout the specification.
도 1은 본 발명의 실시예에 따른 인빌딩 중계 시스템의 구성을 나타낸 도면이다. 1 is a view showing the configuration of an in-building relay system according to an embodiment of the present invention.
도 1을 참조하면, 본 발명에 따른 인빌딩 중계 시스템은, 기지국 제어부(1), 기지국 제어부(1)와 제1유선으로 연결되며 빌딩에 설치되는 원격 무선 기지국 장치(2), 원격 무선 기지국 장치(2)와 제2유선으로 각기 연결되며 상기 빌딩의 다수의 음영지역 중 하나에 각기 설치되는 다수의 분산장치(3)를 포함한다. 나아가, 상기 다수의 분산장치(3)의 수가 원격 무선 기지국 장치(2)가 구비한 포트(port) 수를 넘는 경우나 원격 무선 기지국 장치(2)가 분산장치에 전송하는 신호의 최대 전송거리를 늘리기 위해서 허브확장 유니트(4)를 더 구비할 수 있다. Referring to FIG. 1, an in-building relay system according to the present invention includes a base station controller 1, a base station controller 1, a remote wireless base station apparatus 2 connected to a first wire and installed in a building, and a remote wireless base station apparatus. And a plurality of dispersing apparatuses 3, which are connected to each of the second and second wires and are respectively installed in one of the plurality of shaded areas of the building. Furthermore, when the number of the plurality of distributing apparatuses 3 exceeds the number of ports provided by the remote wireless base station apparatus 2 or the maximum transmission distance of the signal transmitted by the remote wireless base station apparatus 2 to the distributing apparatus, In order to increase, the hub expansion unit 4 may be further provided.
원격 무선 기지국 장치(2)는, 기지국 제어부(1)와 제1유선을 통해 정보를 제1디지털 통신방식으로 송수신하며, 다수의 분산장치(3)(허브 확장 유니트(4)를 통해 연결된 다수의 분산장치도 포함)와 각기 연결된 제2유선을 통해 제2디지털 통신방식으로 정보를 송수신하며, 제1디지털 통신방식 및 제2디지털 통신방식 간 신호변환을 아날로그 신호변환 과정을 거치지 않고 수행한다. The remote wireless base station apparatus 2 transmits and receives information to and from the base station control unit 1 via a first wired line in a first digital communication system, and connects through a plurality of distribution apparatuses 3 (a hub expansion unit 4). It also transmits and receives information in a second digital communication method through a second wire connected to each other), and performs signal conversion between the first digital communication method and the second digital communication method without going through an analog signal conversion process.
분산장치(3)는, 제2디지털 통신방식의 신호와 상기 음영지역으로 송출되거나 상기 음영지역으로부터 수신되는 이동통신신호를 상호 변환한다. 이때, 상기 제1유선은 광케이블일 수 있으며, 상기 제1디지털 통신방식으로 상기 기지국 제어부(1)와 원격 무선 기지국 장치(2) 간에 정보를 송수신할 수 있는 전송매체라면 어느 것이라도 무방하게 사용될 수 있다. 상기 제2유선은 UTP(Unshielded Twisted Pair) 케이블일 수 있으며, 상기 제2디지털 통신방식으로 상기 원격 무선 기지국 장치(2)와 다수의 분산장치(3) 간에 정보를 송수신할 수 있는 전송매체라면 어느 것이라도 무방하다. 또한 상기 제1디지털 통신방식은 공공 공중 무선 인터페이스(Common Public Radio Interface : CPRI) 또는 OBSAI(Open Base Station Architecture Initiative) 통신방식일 수 있다. 즉 상기 기지국 제어부(1)와 원격 무선 기지국 장치(2)는 CPRI 통신방식 또는 OBSAI 통신방식으로 정보를 송수신할 수 있다. 한편, 상기 제2디지털 통신방식은, 기가비트 이더넷(Gigabit Ethernet) 통신방식일 수 있다. 즉 원격 무선 기지국 장치(2)와 다수의 분산장치(허브 확장 유니트(4)를 통해 연결된 다수의 분산장치도 포함)(3)는 기가비트 이더넷 통신방식을 통해서 정보를 송수신할 수 있다. 이에 따라, 기지국 제어부(1) 및 원격 무선 기지국 장치(2)는 광케이블을 통하여 아날로그 신호가 아닌 디지털 신호를 송수신하고, 원격 무선 기지국 장치(2)와 다수의 분산장치(3)도 아날로그 신호변환 과정을 거치지 않고 디지털 신호를 송수신하기 때문에, 기지국 제어부(1)로부터 신호가 원격 무선 기지국 장치(2)를 통해서 다수의 분산장치로 전송되는 과정에서 잡음 등에 의해 영향을 받지 않은 고품질의 신호가 전송될 수 있다.The distributing device 3 converts a signal of a second digital communication method and a mobile communication signal transmitted to or received from the shaded area. In this case, the first wire may be an optical cable, and any transmission medium capable of transmitting and receiving information between the base station controller 1 and the remote wireless base station device 2 may be used without limitation. have. The second wire may be an Unshielded Twisted Pair (UTP) cable, and any transmission medium capable of transmitting and receiving information between the remote wireless base station apparatus 2 and the plurality of distribution apparatuses 3 in the second digital communication scheme may be used. It may be. In addition, the first digital communication method may be a public public radio interface (CPRI) or an OBSAI (Open Base Station Architecture Initiative) communication method. That is, the base station control unit 1 and the remote wireless base station apparatus 2 may transmit and receive information in a CPRI communication method or an OBSAI communication method. The second digital communication method may be a gigabit Ethernet communication method. That is, the remote wireless base station apparatus 2 and the plurality of distributing apparatuses (including the plurality of distributing apparatuses connected through the hub expansion unit 4) 3 can transmit and receive information through the Gigabit Ethernet communication method. Accordingly, the base station controller 1 and the remote wireless base station apparatus 2 transmit and receive digital signals other than analog signals through optical cables, and the remote wireless base station apparatus 2 and the plurality of distributed apparatuses 3 also convert analog signals. Since the digital signal is transmitted and received without passing through, the high quality signal which is not affected by noise or the like can be transmitted in the process of transmitting the signal from the base station controller 1 to the plurality of distributed devices through the remote wireless base station device 2. have.
원격 무선 기지국 장치(2)는, 다수의 분산장치(3)의 동작에 필요한 직류전원을 이더넷 전원 공급방식(Power Over Ethernet : POE) 방식으로 제공하는 교류전원/직류 전원 변환장치를 구비할 수 있다. 상기 교류전원/직류전원 변환장치에 대해서는 후술하기로 한다. The remote wireless base station apparatus 2 may include an AC power / DC power converter that provides DC power required for the operation of the plurality of distributed devices 3 in a Power Over Ethernet (POE) method. . The AC power / DC power converter will be described later.
이에 대응하여 상기 다수의 분산장치(3)는 상기 이더넷 전원 공급방식으로 제공되는 직류전원을 내부구성회로의 동작에 필요한 직류 전원으로 변환하는 직류전원/직류전원 변환장치를 구비할 수 있다. 상기 직류전원/직류전원 변환장치에 대해서는 후술하기로 한다. 이렇게 다수의 분산장치(3)는 이더넷 전원 공급방식으로 제공되는 직류전원을 이용하여 내부구성회로를 동작시키므로, 별도의 교류전원/직류전원 변환장치가 필요치 않고 또한 이에 따른 전원시설 공사가 생략될 수 있다. Correspondingly, the plurality of distributing apparatuses 3 may include a DC power / DC power converter for converting the DC power provided by the Ethernet power supply method into the DC power required for the operation of the internal circuit. The DC power / DC power converter will be described later. Since the plurality of distributed devices (3) operates the internal configuration circuit using a DC power provided by the Ethernet power supply method, a separate AC power / DC power converter is not required and the power facility construction according to this can be omitted. have.
도 2는 도 1에 도시된 원격 무선 기지국 장치의 세부 구성을 나타낸 도면이다.FIG. 2 is a diagram illustrating a detailed configuration of the remote radio base station apparatus shown in FIG. 1.
도 2를 참조하면, 원격 무선 기지국 장치(2)는, CPRI/OBSAI 신호처리부(10), 옥내외 무선출력부(11), 마스터 UTP 인터페이스 송수신기(19), 교류전원/직류전원 변환기(20) 및 프로세부(21)를 포함한다.Referring to FIG. 2, the remote wireless base station apparatus 2 includes a CPRI / OBSAI signal processor 10, an indoor / outdoor wireless output unit 11, a master UTP interface transceiver 19, and an AC power source / DC power converter 20. And a processor 21.
CPRI/OBSAI 신호처리부(10)는 기지국 제어부(1)와 제1유선, 실시예로 광케이블을 통하여 연결되어, 상기 기지국 제어부(1)와 제1디지털 통신방식, 실시예로 공공 공중 무선 인터페이스(CPRI) 또는 OBSAI 통신방식으로 정보를 송수신한다.The CPRI / OBSAI signal processor 10 is connected to the base station controller 1 through a first cable, in an embodiment, through an optical cable, and communicates with the base station controller 1 in a first digital communication scheme, in an embodiment, a public public air interface (CPRI). Or transmit / receive information by OBSAI communication method.
옥내외 무선출력부(11)는 디지털/아날로그 변환부(12), 상승 변환기(13), 고출력 증폭기(14), 송수신 필터(15), 저잡음 증폭기(16), 하강 변환기(17) 및 아날로그/디지털 변환부(18)를 포함하며, 빌딩 내외부로 기지국 제어부(1)로부터 송신된 신호를 송출하거나 빌딩 내외부에 위치한 다수의 단말기(미도시)로부터 신호를 수신하여 CPRI/OBSAI 신호처리부(10)를 통해 기지국 제어부(1)로 송신할 수 있다.The indoor / outdoor wireless output unit 11 includes a digital / analog converter 12, a rising converter 13, a high output amplifier 14, a transmission / reception filter 15, a low noise amplifier 16, a falling converter 17 and an analog / The digital conversion unit 18 includes the CPRI / OBSAI signal processing unit 10 by transmitting a signal transmitted from the base station controller 1 to the inside and outside the building or receiving signals from a plurality of terminals (not shown) located inside and outside the building. It can transmit to the base station control unit 1 through.
디지털/아날로그 변환부(12)는 제1디지털 통신방식의 신호를 아날로그 신호로 변환하고, 상승 변환기(13)는 상기 디지털/아날로그 변환부(12)에서 변환된 아날로그 신호를 이동통신 신호의 주파수 대역으로 상승시키고, 고출력 증폭기(14)는 상기 상승 변환기(13)에서 출력된 아날로그 신호를 증폭하고, 송수신 필터(15)는 상기 고출력 증폭기(14)에서 증폭된 아날로그 신호를 안테나(ANT)를 이용하여 공간으로 방사하며, 저잡음 증폭기(16)는 안테나(ANT)를 통해 단말기로부터 수신된 미약한 이동통신 신호를 저잡음으로 증폭하고, 하강 변환기(17)는 상기 저잡음 증폭기(16)에서 증폭된 이동통신 신호를 중간주파수 대역으로 하강 변환하고, 아날로그/디지털 변환부(18)는 상기 하강 변환기(17)에서 출력되는 이동통신신호를 디지털신호로 변환한다.The digital / analog converter 12 converts the signal of the first digital communication method into an analog signal, and the rising converter 13 converts the analog signal converted by the digital / analog converter 12 into the frequency band of the mobile communication signal. , The high output amplifier 14 amplifies the analog signal output from the rising converter 13, and the transmission / reception filter 15 uses the antenna ANT to convert the analog signal amplified by the high output amplifier 14. Radiating into space, the low noise amplifier 16 amplifies the weak mobile communication signal received from the terminal through the antenna ANT with low noise, and the down converter 17 amplifies the mobile communication signal amplified by the low noise amplifier 16. Is converted into the intermediate frequency band, and the analog-digital converter 18 converts the mobile communication signal output from the falling converter 17 into a digital signal.
마스터 UTP 인터페이스 송수신기(19)는 CPRI/OBSAI 신호처리부(10)로부터 수신된 제1디지털 통신방식의 신호를 아날로그 신호변환 과정을 거치지 않고 제2디지털 통신방식의 신호로 변환하고 UTP 케이블을 통하여 연결된 다수의 분산장치(3)로부터 수신된 제2디지털 통신방식의 신호를 아날로그 신호변환 과정을 거치지 않고 제1디지털 통신방식의 신호로 변환한다. 이때, 제1디지털 통신방식의 신호는, CPRI 통신방식의 신호 또는 OBSAI 통신방식의 신호일 수 있으며, 제2디지털 통신방식의 신호는 기가비트 이더넷 신호일 수 있다. 이때, 마스터 UTP 인터페이스 송수신기(19)는 상기 CPRI/OBSAI 신호처리부(10)와 하나의 기판(board)에 통합되어 구현되거나, 각각 별개의 기판에 구현될 수 있다. The master UTP interface transceiver 19 converts the signal of the first digital communication method received from the CPRI / OBSAI signal processor 10 into the signal of the second digital communication method without going through an analog signal conversion process and is connected through a UTP cable. The signal of the second digital communication method received from the distributing device 3 is converted into the signal of the first digital communication method without undergoing an analog signal conversion process. In this case, the signal of the first digital communication method may be a signal of the CPRI communication method or the signal of the OBSAI communication method, and the signal of the second digital communication method may be a gigabit Ethernet signal. In this case, the master UTP interface transceiver 19 may be implemented by being integrated with the CPRI / OBSAI signal processor 10 and one board, or may be implemented on separate boards.
교류전원/직류전원 변환기(20)는 원격 무선 기지국 장치(2)와 UTP 케이블로 연결되는 다수의 분산장치(3)의 동작에 필요한 직류 전원을 공급하기 위해서 교류전원을 직류전원으로 변환하여, 마스터 UTP 인터페이스 송수신기(19)에 인가한다. 이에 마스터 UTP 인터페이스 송수신기(19)는 교류전원/직류전원 변환기(20)에서 인가된 직류전원을 이더넷 전원 공급방식(Power Over Ethernet : POE)으로 상기 다수의 분산장치(3)에 제공한다.The AC power / DC power converter 20 converts AC power into DC power in order to supply DC power necessary for the operation of the plurality of distributed devices 3 connected to the remote wireless base station device 2 and the UTP cable. To the UTP interface transceiver 19. In response, the master UTP interface transceiver 19 provides the DC power applied from the AC power / DC power converter 20 to the plurality of distributed devices 3 through the Power Over Ethernet (POE).
프로세서부(21)는 상기 상승 변환기(13), 고출력 증폭기(14), 하강 변환기(17)의 동작을 제어한다.The processor unit 21 controls the operation of the rising converter 13, the high output amplifier 14, and the falling converter 17.
도 3은 도 2에 도시된 마스터 UTP 인터페이스 송수신기의 세부 구성을 나타낸 도면이다.FIG. 3 is a diagram illustrating a detailed configuration of the master UTP interface transceiver shown in FIG. 2.
도 3을 참조하면, 마스터 UTP 인터페이스 송수신기(19)는 디지털/디지털 변환부(191), 기가비트 물리계층 변환기(192) 및 이더넷 전원 공급기(193)를 포함한다.Referring to FIG. 3, the master UTP interface transceiver 19 includes a digital to digital converter 191, a gigabit physical layer converter 192, and an Ethernet power supply 193.
디지털/디지털 변환부(191)는 CPRI/OBSAI 신호처리부(10)와 내부 배선으로 연결되며 하나의 직렬 제1디지털 통신방식의 신호를 n(자연수)페어(pair)의 병렬 제2디지털 통신방식의 신호, 실시예로 병렬 UTP 디지털 신호로 변환하며, 이의 역변환도 수행한다.이때, 디지털/디지털 변환부(191)는 1개의 제1디지털 통신방식의 신호, 실시예로 CPRI 통신방식의 신호 또는 OBSAI 통신방식의 신호를 4 페어의 병렬 UTP 디지털 신호로 변환할 수 있다. 이는 일 실시예에 불과하며 시스템의 상황에 따라 변경될 수 있다.The digital / digital conversion unit 191 is connected to the CPRI / OBSAI signal processing unit 10 by internal wiring, and converts a signal of one serial first digital communication method into an n (natural number) pair of parallel second digital communication methods. The signal is converted into a parallel UTP digital signal in an embodiment, and the inverse conversion thereof is also performed. At this time, the digital / digital conversion unit 191 is a signal of one first digital communication method, in one embodiment, a CPRI communication method or an OBSAI. The communication signal can be converted into four pairs of parallel UTP digital signals. This is only an example and may be changed according to the situation of the system.
기가비트 물리계층 변환기(192)는 디지털/디지털 변환부(191)에서 변환된 UTP 디지털 신호가 UTP 케이블을 통해 전송되도록 기가비트 이더넷 신호로 변환하며, 이의 역변환도 수행한다. 일 실시예에 있어서, UTP 케이블로 디지털 신호가 송신 및 수신 가능한 인터넷용으로 상용화된 1:4 방식을 2개 적용하여, 1개의 원격 무선 기지국 장치에 최대 8개의 분산장치를 연결할 수 있다.The gigabit physical layer converter 192 converts the UTP digital signal converted by the digital / digital conversion unit 191 into a gigabit Ethernet signal so as to be transmitted through the UTP cable, and performs inverse conversion thereof. In one embodiment, up to eight distributed devices can be connected to one remote wireless base station device by applying two 1: 4 methods commercially available for the Internet, in which a digital signal can be transmitted and received using a UTP cable.
이더넷 전원 공급기(193)는 교류전원/직류전원 변환기(20)에서 인가된 직류전원을 이더넷 전원공급방식(POE)으로 UTP 케이블을 통해서 다수의 분산장치(3)에 제공한다.The Ethernet power supply 193 provides the DC power applied from the AC power / DC power converter 20 to the plurality of distributed devices 3 through the UTP cable by the Ethernet power supply method (POE).
도 4는 도 1에 도시된 분산장치의 세부 구성을 나타낸 도면이다.4 is a view showing a detailed configuration of the dispersion apparatus shown in FIG.
도 4를 참조하면, 분산장치(3)는 분산 UTP 인터페이스 송수신기(3), 디지털/아날로그 변환부(31), 분산 상승 변환기(32), 고출력 증폭기(33), 분산 송수신 필터(34), 저잡음 증폭기(35), 분산 하강 변환기(36), 아날로그/디지털 변환부(37), 직류전원/직류전원 변환기(38) 및 분산 프로세서부(39)를 포함한다.Referring to FIG. 4, the dispersion apparatus 3 includes a distributed UTP interface transceiver 3, a digital / analog converter 31, a distributed rising converter 32, a high output amplifier 33, a distributed transmit / receive filter 34, and low noise. An amplifier 35, a distributed down converter 36, an analog / digital converter 37, a DC power supply / DC power converter 38, and a distributed processor unit 39 are included.
분산 UTP 인터페이스 송수신기(30)는 원격 무선 기지국 장치(2)와 UTP 케이블을 통해 제2디지털 통신방식의 신호를 송수신한다.The distributed UTP interface transceiver 30 transmits and receives a signal of the second digital communication method with the remote wireless base station apparatus 2 through the UTP cable.
디지털/아날로그 변환부(31)는 분산 UTP 인터페이스 송수신기(30)에 수신된 제2디지털 통신방식의 신호를 중간 주파수 대역을 갖는 아날로그 신호로 변환한다.The digital / analog converter 31 converts the second digital communication signal received by the distributed UTP interface transceiver 30 into an analog signal having an intermediate frequency band.
분산 상승 변환기(32)는 상기 중간 주파수 대역을 갖는 아날로그 신호를 이동통신 신호의 주파수 대역으로 상승시킨다.The distributed rising converter 32 raises the analog signal having the intermediate frequency band to the frequency band of the mobile communication signal.
고출력 증폭기(33)는 상기 이동통신 신호의 주파수 대역으로 상승된 아날로그 신호를 증폭한다.The high output amplifier 33 amplifies the analog signal raised to the frequency band of the mobile communication signal.
분산 송수신 필터(34)는 상기 고출력 증폭기(33)에서 증폭된 아날로그 신호를 안테나(ANT)를 통해 음영지역의 공간에 방사 한다.The distributed transmission / reception filter 34 radiates the analog signal amplified by the high power amplifier 33 to the space of the shaded area through the antenna ANT.
저잡음 증폭기(35)는 음영지역 위치한 단말기로부터 분산 송수신 필터(34)와 연결된 안테나(ANT)를 통해 수신된 미약한 이동통신신호를 저잡음으로 증폭한다.The low noise amplifier 35 amplifies the weak mobile communication signal received through the antenna ANT connected to the distributed transmission / reception filter 34 from the terminal located in the shadow area with low noise.
분산 하강 변환기(36)는 상기 저잡음 증폭기(36)에서 저잡음 증폭된 이동통신신호를 중간 주파수 대역으로 하강 변환한다.The distributed down converter 36 down converts the low noise amplified mobile communication signal from the low noise amplifier 36 to an intermediate frequency band.
아날로그/디지털 변환부(37)는 상기 분산 하강 변환기(36)에서 변환된 이동통신신호를 디지털 신호, 즉 제2디지털 통신방식의 신호로 변환한다. 이렇게 변환된 제2디지털 통신방식의 신호는 분산 UTP 인터페이스 송수신기(30)를 통해 원격 무선 기지국 장치(2)로 전송될 수 있다.The analog / digital converter 37 converts the mobile communication signal converted by the distributed down converter 36 into a digital signal, that is, a signal of a second digital communication method. The converted second digital communication signal may be transmitted to the remote wireless base station apparatus 2 through the distributed UTP interface transceiver 30.
직류전원/직류전원 변환기(38)는 분산 UTP 인터페이스 송수신기(30)를 통해 이더넷 전원공급방식으로 인가되는 직류전원을, 분산장치(3)의 내부구성회로의 동작에 필요한 직류전원으로 변환한다. 이에 따라 분산장치(3)는 내부구성회로의 동작에 필요한 직류전원을 얻기 위해서, 별도의 교류전원/직류전원 변환기를 구비하지 않아도 되며, 이로 인해서 전원시설 공사가 생략될 수 있다. The DC power supply / DC power converter 38 converts the DC power applied by the Ethernet power supply method through the distributed UTP interface transceiver 30 to the DC power required for the operation of the internal configuration circuit of the dispersion apparatus 3. Accordingly, the dispersion apparatus 3 does not have to be provided with a separate AC power / DC power converter in order to obtain a DC power required for the operation of the internal circuit, and thus construction of a power supply can be omitted.
분산 프로세서부(39)는 분산 상승 변환기(32), 고출력 증폭기(33) 및 분산 하강 변환기(36)의 동작을 제어한다.The distributed processor unit 39 controls the operations of the distributed rising converter 32, the high power amplifier 33, and the distributed falling converter 36.
도 5는 도 4에 도시된 분산 UTP 인터페이스 송수신기의 상세 구성을 나타낸 도면이다.FIG. 5 is a diagram illustrating a detailed configuration of the distributed UTP interface transceiver shown in FIG. 4.
도 5를 참조하면, 분산 UTP 인터페이스 송수신기(30)는 이더넷 전원 공급기(300), 기가비트 물리계층 변환기(301) 및 기가비트 이더넷 신호처리부(302)를 포함한다.Referring to FIG. 5, the distributed UTP interface transceiver 30 includes an Ethernet power supply 300, a gigabit physical layer converter 301, and a gigabit Ethernet signal processor 302.
이더넷 전원 공급기(300)는 UTP 케이블을 통해 원격 무선 기지국 장치(2)로부터 이더넷 전원공급방식(POE)으로 제공되는 직류전원을 직류전원/직류전원 변환기(38)에 인가한다.The Ethernet power supply 300 applies DC power supplied from the remote wireless base station device 2 to the Ethernet power supply method (POE) via the UTP cable to the DC power / DC power converter 38.
기가비트 물리계층 변환기(301)는 UTP 케이블을 통해 원격 무선 기지국 장치(2)로부터 수신된 제2디지털 통신방식의 신호, 실시예로 기가비트 이더넷 신호를 UTP 디지털 신호로 변환하고, 이의 역변환도 수행한다.The gigabit physical layer converter 301 converts a signal of the second digital communication method, eg, a gigabit Ethernet signal, received from the remote wireless base station apparatus 2 through a UTP cable into a UTP digital signal, and also performs inverse conversion thereof.
기가비트 이더넷 신호처리부(302)는 n(자연수)페어의 병렬 디지털 신호를 직렬로 변환하고, 이의 역변환도 수행한다. 일 실시예에 있어서 4 페어(pair)의 병렬 UTP 디지털 신호를 직렬로 변환하고 이의 역변환도 수행한다. The gigabit Ethernet signal processing unit 302 converts a parallel digital signal of n (natural number) pairs in series and performs inverse conversion thereof. In one embodiment, four pairs of parallel UTP digital signals are serially converted and inversely transformed.
이제까지 본 발명에 대하여 실시예들을 중심으로 살펴보았다. 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자는 본 발명의 본질적인 특성에서 벗어나지 않는 범위에서 변형된 형태로 구현될 수 있음을 이해할 수 있을 것이다. 그러므로 개시된 실시예들은 한정적인 관점이 아니라 설명적인 관점에서 고려되어야 한다. 따라서 본 발명의 범위는 전술한 실시예에 한정되지 않고 특허청구범위에 기재된 내용 및 그와 동등한 범위 내에 있는 다양한 실시 형태가 포함되도록 해석되어야 할 것이다.So far, the present invention has been described with reference to the embodiments. Those skilled in the art will understand that the present invention may be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. Therefore, the scope of the present invention should not be construed as being limited to the above-described examples, but should be construed to include various embodiments within the scope of the claims and equivalents thereof.
본 발명은 이동통신 분야의 시스템 개발에 적용될 수 있다. The present invention can be applied to system development in the field of mobile communication.

Claims (14)

  1. 기지국 제어부, 상기 기지국 제어부와 제1유선으로 연결되며 빌딩에 설치되는 원격 무선 기지국 장치 및 상기 원격 무선 기지국 장치와 제2유선으로 각기 연결되며 상기 빌딩의 다수의 음영지역 중 하나에 설치되는 다수의 분산장치를 포함하는 인빌딩 중계 시스템에 있어서,A base station controller, a remote wireless base station apparatus connected to the base station controller by a first wire and installed in a building, and a plurality of distributed units respectively connected to the remote wireless base station apparatus by a second wire and installed in one of a plurality of shaded areas of the building An in-building relay system comprising a device,
    상기 원격 무선 기지국 장치는, 상기 기지국 제어부와 상기 제1유선을 통해 정보를 제1디지털 통신방식으로 송수신하며 상기 다수의 분산장치와 각기 연결된 상기 제2유선을 통해 제2디지털 통신방식으로 정보를 송수신하며, 상기 제1디지털 통신방식 및 제2디지털 통신방식 간 신호변환을 아날로그 신호변환 과정을 거치지 않고 수행하며,The remote wireless base station apparatus transmits and receives information in a first digital communication scheme with the base station controller through the first wired line, and transmits and receives information in a second digital communication scheme through the second wires connected to the plurality of distributed devices, respectively. The signal conversion between the first digital communication method and the second digital communication method is performed without undergoing an analog signal conversion process.
    상기 분산장치는, 상기 제2디지털 통신방식의 신호와, 상기 음영지역으로 송출되거나 상기 음영지역으로부터 수신되는 이동통신신호를 상호 변환하는 것을 특징으로 하는 인빌딩 중계 시스템. And the distribution unit converts the signal of the second digital communication method and the mobile communication signal transmitted to or received from the shadowed area to each other.
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 제1유선은 광케이블인 것을 특징으로 하는 인빌딩 중계 시스템.The first wire is an in-building relay system, characterized in that the optical cable.
  3. 청구항 1에 있어서,The method according to claim 1,
    상기 제2유선은 UTP(Unshielded Twisted Pair) 케이블인 것을 특징으로 하는 인빌딩 중계 시스템.The second wire is an in-building relay system, characterized in that the UTP (Unshielded Twisted Pair) cable.
  4. 청구항 1 또는 청구항 2에 있어서, The method according to claim 1 or 2,
    상기 제1디지털 통신방식은, 공공 공중 무선 인터페이스(Common Public Radio Interface : CPRI) 또는 OBSAI(Open Base Station Architecture Initiative) 통신방식인 것을 특징으로 하는 인빌딩 중계 시스템.The first digital communication method is an in-building relay system, characterized in that the public public radio interface (CPRI) or OBSAI (Open Base Station Architecture Initiative) communication method.
  5. 청구항 1 또는 청구항 3에 있어서, The method according to claim 1 or 3,
    상기 제2디지털 통신방식은, 기가비트 이더넷(Gigabit Ethernet) 통신방식인 것을 특징으로 하는 인빌딩 중계시스템.The second digital communication method is an in-building relay system, characterized in that a Gigabit Ethernet communication method.
  6. 청구항 5에 있어서, The method according to claim 5,
    상기 원격 무선 기지국 장치는, 상기 다수의 분산장치의 동작에 필요한 직류전원을 이더넷 전원 공급방식(Power Over Ethernet : POE) 방식으로 제공하는 교류전원/직류전원 변환장치를 구비하는 것을 특징으로 하는 인빌딩 중계 시스템.The remote wireless base station apparatus includes an AC power supply / DC power converter for providing DC power required for the operation of the plurality of distributed devices in a Power Over Ethernet (POE) method. Relay system.
  7. 청구항 6에 있어서, The method according to claim 6,
    상기 다수의 분산장치는, 상기 이더넷 전원 공급방식으로 제공되는 직류전원을 내부구성회로의 동작에 필요한 직류 전원으로 변환하는 직류전원/직류전원 변환장치를 구비하는 것을 특징으로 하는 인빌딩 중계 시스템.The plurality of distributed devices, the in-building relay system characterized in that it comprises a DC power / DC power converter for converting the DC power provided by the Ethernet power supply method to the DC power required for the operation of the internal circuit.
  8. 기지국 제어부와 제1유선으로 연결되어, 상기 기지국 제어부와 제1디지털 통신방식으로 정보를 송수신하는 CPRI/OBSAI 신호처리부; 와A CPRI / OBSAI signal processor connected to the base station controller through a first wire and transmitting and receiving information to and from the base station controller in a first digital communication scheme; Wow
    상기 CPRI/OBSAI 신호처리부로부터 수신된 제1디지털 통신방식의 신호를 아날로그 신호변환 과정을 거치지 않고 제2디지털 통신방식의 신호로 변환하고 제2유선으로 각기 연결되고 빌딩의 음영지역에 설치된 다수의 분산장치로부터 수신된 제2디지털 통신방식의 신호를 아날로그 신호변환 과정을 거치지 않고 제1디지털 통신방식의 신호로 변환하는 마스터 UTP 인터페이스 송수신기를 포함하는 것을 특징으로 하는 원격 무선 기지국 장치.The first digital communication signal received from the CPRI / OBSAI signal processing unit is converted into a signal of the second digital communication method without going through an analog signal conversion process, each of which is connected to the second wire and distributed in a shaded area of the building And a master UTP interface transceiver for converting the second digital communication signal received from the device into the first digital communication signal without undergoing an analog signal conversion process.
  9. 청구항 8에 있어서,The method according to claim 8,
    상기 제1유선은 광케이블인 것을 특징으로 하는 원격 무선 기지국 장치. The first wire is a remote wireless base station device, characterized in that the optical cable.
  10. 청구항 8에 있어서,The method according to claim 8,
    상기 제2유선은 UTP(Unshielded Twisted Pair) 케이블인 것을 특징으로 하는 원격 무선 기지국 장치. The second wire is a remote wireless base station device, characterized in that the UTP (Unshielded Twisted Pair) cable.
  11. 청구항 8 또는 청구항 9에 있어서, The method according to claim 8 or 9,
    상기 제1디지털 통신방식은 공공 공중 무선 인터페이스(Common Public Radio Interface : CPRI) 또는 OBSAI(Open Base Station Architecture Initiative) 통신방식인 것을 특징으로 하는 원격 무선 기지국 장치.The first digital communication method is a remote wireless base station device, characterized in that the Public Public Radio Interface (CPRI) or OBSAI (Open Base Station Architecture Initiative) communication method.
  12. 청구항 8 또는 청구항 10에 있어서, The method according to claim 8 or 10,
    상기 제2디지털 통신방식은, 기가비트 이더넷(Gigabit Ethernet) 통신방식인 것을 특징으로 하는 원격 무선 기지국 장치.And the second digital communication method is a gigabit ethernet communication method.
  13. 청구항 8에 있어서,The method according to claim 8,
    상기 원격 무선 기지국 장치는,The remote radio base station apparatus,
    상기 다수의 분산장치의 동작에 필요한 직류전원을 이더넷 전원 공급방식(Power Over Ethernet : POE) 방식으로 제공하는 교류전원/직류전원 변환장치를 더 구비하는 것을 특징으로 하는 원격 무선 기지국 장치.The remote wireless base station apparatus further comprises an AC power / DC power converter for providing a DC power required for the operation of the plurality of distributed devices in the Power Over Ethernet (POE) method.
  14. 청구항 8 또는 청구항 13에 있어서,The method according to claim 8 or 13,
    상기 원격 무선 기지국 장치는,The remote radio base station apparatus,
    상기 기지국 제어부로부터 송신된 신호를 빌딩 내외부로 송출하거나 상기 빌딩 내외부에 위치한 다수의 단말기로부터 신호를 수신하여 상기 CPRI/OBSAI 신호처리부를 통해 상기 기지국 제어부로 송신하는 옥내외 무선출력부를 더 구비하는 것을 특징으로 하는 원격 무선 기지국 장치.It further includes an indoor and outdoor wireless output unit for transmitting a signal transmitted from the base station control unit to the inside and outside the building or receiving a signal from a plurality of terminals located inside and outside the building and transmitting the signal to the base station control unit through the CPRI / OBSAI signal processing unit. Remote wireless base station device.
PCT/KR2012/009817 2012-05-24 2012-11-20 Remote wireless base station device having in-house expandability and in-building relay system WO2013176356A1 (en)

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