KR20130131183A - Rrh system over broadband network - Google Patents

Rrh system over broadband network Download PDF

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Publication number
KR20130131183A
KR20130131183A KR1020120055060A KR20120055060A KR20130131183A KR 20130131183 A KR20130131183 A KR 20130131183A KR 1020120055060 A KR1020120055060 A KR 1020120055060A KR 20120055060 A KR20120055060 A KR 20120055060A KR 20130131183 A KR20130131183 A KR 20130131183A
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broadband network
rrh
obsai
cpri
interface
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Korean (ko)
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김병직
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(주)카배온
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2801Broadband local area networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854Wide area networks, e.g. public data networks
    • H04L12/2856Access arrangements, e.g. Internet access
    • H04L12/2858Access network architectures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00Packet switching elements
    • H04L49/35Switches specially adapted for specific applications
    • H04L49/351Switches specially adapted for specific applications for local area network [LAN], e.g. Ethernet switches

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

Abstract

The present invention relates to a communication method between a digital unit (DU) of a mobile communication base station and a radio unit (RU)/remote radio head (RRH), and is a technology for supplementing an existing system which must have an optical communication line between the DU and RRH and utilize a broadband network. A method according to the present invention provides a standard CPRI or an OBSAI interface and provides a system for receiving a signal come in from the interface and converting into Ethernet, GE-PON and xDSL signals which are appropriate for a broadband network through packet processing. As such, the restricted connection between the DU and the RRH is resolved and an already established wired internet infrastructure and a broadband network are able to be utilized. [Reference numerals] (30,40) CPRI or OBSAI signal and broadband network packet conversion device;(AA,CC) Optical cable;(BB) Broadband network;(DD,EE) CPRI or OBSAI

Description

브로드밴드 네트워크를 활용한 이동통신 원격 무선 장비 시스템 {RRH system over broadband network}Mobile telecommunication system using broadband network {RRH system over broadband network}

본 발명은 이동 통신 기지국의 DU(Digital Unit) 과 RU(Radio Unit)/RRH(Remote Radio Head) 간의 통신 방법에 관한 것으로서 기존 시스템이 DU 와 RRH 간에 광통신 선로가 반드시 필요한 제약을 가지고 있는 것을 보완하여 브로드밴드 네트워크를 활용하는 기술 이다.The present invention relates to a communication method between a digital unit (DU) and a radio unit (RU) / remote radio head (RRH) of a mobile communication base station, and supplements that the existing system has a constraint that an optical communication line is necessary between the DU and the RRH. It is a technology using a broadband network.

스마트 기기들의 급속한 보급과 함께 폭발적으로 늘어나고 있는 데이터 트래픽을 효율적으로 관리하기 위하여 기존의 이동통신 기지국의 구성 형태인 RU 와 DU 의 일체형 구조를 RU 와 DU 를 분리하여 RU 를 원격지에 분산 설치하여 운용하는 시스템을 RRH 시스템이라고 하며 이를 위해서는 RRH 와 DU 간 CPRI 또는 OBSAI 라는 표준 인터페이스를 제공해야 하며 RRH 와 DU 간에는 광 케이블을 통해 연결 되어야 한다.In order to efficiently manage the exploding data traffic with the rapid spread of smart devices, the RU and DU, which is a configuration of the existing mobile communication base station, are separated from the RU and DU, and the RUs are distributed and operated remotely. The system is called an RRH system, and this requires the provision of a standard interface called CPRI or OBSAI between the RRH and the DU, and the connection between the RRH and the DU via an optical cable.

RRH 와 DU 간 연결을 위해서는 기존 시스템으로는 반드시 광케이블이 포설되어 있어야 하며 이는 RRH 설치 장소에 제약을 가져온다. 새로 광케이블을 포설하기 위해서는 설치 비용이 발생하고 기존 광케이블을 사용하기 위해서는 광케이블 소유자에게 사용료를 지불 해야 한다. 본 발명에서는 광케이블을 사용하지 않고 기존의 브로드밴드 네트워크 자원을 활용하여 RRH 와 DU 를 연결하는 기술을 제시한다.For the connection between the RRH and the DU, the fiber optic cable must be installed in the existing system, which places a limitation on the RRH installation site. Installation of new fiber will incur installation costs, and the use of existing fiber will require payment to the cable owner. The present invention proposes a technique for connecting an RRH and a DU using an existing broadband network resource without using an optical cable.

표준 CPRI 또는 OBSAI 인터페이스를 제공하고 이러한 인터페이스로 부터 유입되는 신호를 받아서 패킷 처리를 통해 브로드밴드 네트워크에 적절한 이더넷, GE-PON, xDSL 신호로 바꾸어 주는 시스템을 제공 한다. It provides a standard CPRI or OBSAI interface and provides a system that receives signals from these interfaces and converts them into Ethernet, GE-PON, and xDSL signals suitable for broadband networks through packet processing.

본 발명을 통해 DU 와 RRH 간의 연결 방법의 제약을 해결할 수 있다. 이에 따라 기존에 포설되어 있는 유선 인터넷 인프라인 브로드밴드 네트워크를 활용할 수 있다. 브로드밴드 네트워크를 활용함네 따라 RRH 설치를 위한 비용을 기존 방식에 따라 대폭 감소할 수 있으며 좀더 많은 RRH 설치를 유도하여 이동 통신망 사용자에게 음성과 데이터 모두 양질의 서비스 품질을 제공 할 수 있다.The present invention can solve the limitation of the connection method between the DU and RRH. As a result, the existing broadband network, a wired Internet infrastructure, can be utilized. By utilizing the broadband network, the cost of installing the RRH can be greatly reduced according to the existing method, and by inducing more RRH installations, it is possible to provide high quality service quality for both voice and data to the mobile network users.

도 1은 종래 기술에 따른 RRH 시스템 구성도.
도 2는 본 발명에 따른 브로드 밴드 네트워크를 활용한 시스템 구성도.
도 3은 본 발명에 따른 추가 시스템의 내부 구성도.
1 is a block diagram of an RRH system according to the prior art.
2 is a system configuration utilizing a broadband network according to the present invention.
3 is an internal configuration diagram of a further system according to the present invention;

이하, 본 발명과 관련된 브로드밴드 네트워크를 이용한 RRH 시스템에 대하여 도면을 참조 하여 보다 상세하게 설명한다. Hereinafter, an RRH system using a broadband network according to the present invention will be described in more detail with reference to the accompanying drawings.

도 1은 본 발명과 관련된 RRH 시스템의 기본적인 구성도이고, 도 2는 본 발명에 따른 시스템이 추가되어 브로드밴드 네트워크를 활용하여 DU 과 RRH 를 연결하는 구성을 나타낸다. 도 3은 본 발명에 따른 시스템의 내부 구성도이다.1 is a basic configuration diagram of an RRH system related to the present invention, and FIG. 2 illustrates a configuration in which a system according to the present invention is added to connect a DU and an RRH using a broadband network. 3 is an internal configuration diagram of a system according to the present invention.

도 1의 기본적인 구성도를 보면 RRH 기반 이동 통신 기지국 시스템은 DU(10) 과 RRH(20) 은 광케이블을 통해 국제 표준 인터페이스인 CPRI(Common Public Radio Interface) 또는 OBSAI(Open Base Station Architecture Initiative) (11,21) 로 연결 되어 있다.Referring to the basic configuration of FIG. 1, the RRH-based mobile communication base station system includes the DU 10 and the RRH 20 through an optical cable, such as the Common Public Radio Interface (CPRI) or the Open Base Station Architecture Initiative (OBSAI) (11). , 21).

도 2는 에서 보여 지듯이 본 발명은 이러한 인터페이스 사이에 한 쌍의 새로 고안된 장치인 CPRI 또는 OBSAI 신호와 브로드밴드 네트워크 패킷 변환장치(30,40)를 기존의 DU(10) 과 RRH(20)에 사이에 넣어서 기존 광 케이블로 DU(10) 과 RRH(20) 사이에 연결 되던 광 신호를 새로 고안된 CPRI 또는 OBSAI 신호와 브로드밴드 네트워크 패킷 변환장치(30,40) 에 각각 연결하여 신호 전달을 해 주고 이들 장치(30,40) 은 서로 브로드밴드 네트워크로 연결 되어 원래 신호인 CPRI 또는 OBSAI 를 브로드밴드 네트워크에 맞는 패킷으로 재구성하여 통신 전달하고, 복원하여 각각 DU(10) 과 RRH(20) 으로 원래 보내고자 했던 신호를 전달 한다.As shown in FIG. 2, the present invention provides a pair of newly designed devices such as CPRI or OBSAI signals and broadband network packet converters 30 and 40 between the existing DU 10 and RRH 20 between these interfaces. The optical signal connected between the DU 10 and the RRH 20 by the conventional optical cable to the newly designed CPRI or OBSAI signal and the broadband network packet converter 30, 40, respectively, for signal transmission, and 30 and 40 are connected to each other through a broadband network, reconstruct and transmit CPRI or OBSAI, which is an original signal, to a packet suitable for a broadband network, and restore and transmit a signal originally intended to be sent to the DU 10 and the RRH 20, respectively. do.

도 3은 새로 고안된 CPRI 또는 OBSAI 신호와 브로드밴드 네트워크 패킷 변환장치(30) 의 구성도로 내부적으로는 CPRI 또는 OBSAI 인터페이스(31), 패킷변환부(32), QoS 제어부(33), 브로드밴드인터페이스(34) 로 구성되된다.3 is a block diagram of a newly designed CPRI or OBSAI signal and the broadband network packet converter 30. The CPRI or OBSAI interface 31, the packet converter 32, the QoS controller 33, and the broadband interface 34 are internally shown. It is composed of.

CPRI 또는 OBSAI 인터페이스(31) 는 DU 또는 RRH 와의 표준 인터페이스를 제공 하는 역할을 하고 패킷변환부(32)는 CPRI 또는 OBSAI 긴반 신호를 Ethernet 기반의 Packet 으로 변환하여 브로드밴드 네트워크에 적절한 형식으로 바꾸어주고, QoS(Quality of Service) 제어부는 브로드밴드 네트워크 상에서 데이터 전달의 서비스 질 저하를 막기위한 QoS 식별용 코드 값을 추가 하고, 인식하고, 제어하는 역할을 수행한다. 브로드밴드 인터페이스부는 Ethernet, xDSL, EPON, GPON 을 포함하는 IP 기반 브로드밴드 네트워크 인터페이스를 제공한다.The CPRI or OBSAI interface 31 serves to provide a standard interface with the DU or RRH, and the packet converter 32 converts the CPRI or OBSAI banned signal into an Ethernet-based packet and converts it into a format suitable for a broadband network. (Quality of Service) The control unit adds, recognizes, and controls a QoS identification code value to prevent a deterioration of service quality of data transmission on a broadband network. The broadband interface unit provides an IP based broadband network interface including Ethernet, xDSL, EPON, and GPON.

10... DU(Digital Unit) 20... RRH(Remote Radio Head)
11,21... CPRI 또는 OBSAI 인터페이스
30,40... CPRI 또는 OBSAI 신호와 브로드밴드 네트워크 패킷 변환 장치
31... CPRI 또는 OBSAI 인터페이스
32... 패킷변환부
33... QoS 제어부
34... 브로드밴드 인터페이스
10 ... DU (Digital Unit) 20 ... RRH (Remote Radio Head)
11,21 ... CPRI or OBSAI interface
30,40 ... CPRI or OBSAI signal and broadband network packet converter
31 ... CPRI or OBSAI interface
32 ... packet converter
33. QoS control
34 ... broadband interface

Claims (4)

DU 와 RRH 로 이루어지는 이동통신 기지국 시스템에서 DU 와 RRH 사이에 삽입되어 브로드밴드 네트워크를 이용하여 CPRI 또는 OBSAI 기반 통신을 제공할 수 있도록 해 주는 통신 시스템.A communication system inserted between a DU and an RRH in a mobile communication base station system including a DU and an RRH to provide CPRI or OBSAI based communication using a broadband network. 제 1항에 기술한 시스템에 있어서 CPRI 또는 OBSAI 신호를 받아서 표준 10Mbps/100Mbps/1000Mbps Ethernet 패킷으로 변환 시키는 패킷 변환 기술.A packet conversion technique for receiving a CPRI or OBSAI signal and converting it into a standard 10 Mbps / 100 Mbps / 1000 Mbps Ethernet packet. 제 1항에 기술한 시스템에 있어서 브로드밴드 네트워크를 이용한 통신의 우선 순위 제어를 위한 Ethernet 또는 IP 기반의 CoS, DSCP 필드를 이용한 QoS 제어 식별 코드값을 추가하고 인식하고 제어하는 기술.A technique for adding, recognizing, and controlling QoS control identification code values using an Ethernet or IP-based CoS, DSCP field for priority control of communication using a broadband network in the system described in claim 1. 제 1항에 기술한 시스템에 있어서 다양한 형태의 브로드밴드 네트워크 통신 장치와의 정합을 위해 제공하는 ADSL, VDSL, EPON, GPON, 10Mbps/100Mbps/1000Mbps Ethernet 인터페이스를 제공하는 구조
A system providing ADSL, VDSL, EPON, GPON, 10Mbps / 100Mbps / 1000Mbps Ethernet interfaces provided for matching with various types of broadband network communication devices in the system described in claim 1.
KR1020120055060A 2012-05-23 2012-05-23 Rrh system over broadband network Ceased KR20130131183A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150004661U (en) 2014-06-23 2015-12-31 태형산전 주식회사 A POWER SUPPLY DEVICE FOR Remote Radio Head
KR20160004043U (en) 2016-11-15 2016-11-23 태형산전 주식회사 A POWER SUPPLY DEVICE FOR Remote Radio Head
KR200481897Y1 (en) 2015-09-02 2016-11-24 태형산전 주식회사 A integrated power supply device that provide power supply to rrh and repeater

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150004661U (en) 2014-06-23 2015-12-31 태형산전 주식회사 A POWER SUPPLY DEVICE FOR Remote Radio Head
KR200481897Y1 (en) 2015-09-02 2016-11-24 태형산전 주식회사 A integrated power supply device that provide power supply to rrh and repeater
KR20160004043U (en) 2016-11-15 2016-11-23 태형산전 주식회사 A POWER SUPPLY DEVICE FOR Remote Radio Head

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