WO2016077960A1 - Dispositif d'accès et système de transmission par réseau - Google Patents

Dispositif d'accès et système de transmission par réseau Download PDF

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Publication number
WO2016077960A1
WO2016077960A1 PCT/CN2014/091276 CN2014091276W WO2016077960A1 WO 2016077960 A1 WO2016077960 A1 WO 2016077960A1 CN 2014091276 W CN2014091276 W CN 2014091276W WO 2016077960 A1 WO2016077960 A1 WO 2016077960A1
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WO
WIPO (PCT)
Prior art keywords
circuit board
cmts
board
backplane
olt
Prior art date
Application number
PCT/CN2014/091276
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English (en)
Chinese (zh)
Inventor
林连魁
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/091276 priority Critical patent/WO2016077960A1/fr
Priority to CN201480007122.1A priority patent/CN105900356B/zh
Publication of WO2016077960A1 publication Critical patent/WO2016077960A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission

Definitions

  • the present invention relates to the field of Internet communication technologies, and in particular, to an access device and a network communication system.
  • An OLT (Access Device) device and a CMTS (Cable Modem Terminal System) device are devices that provide broadband access in the field of Internet communications.
  • the OLT device is an optoelectronic device, and its functions are:
  • OLT equipment supports PON access including GPON/EPON/XGPON/XEPON, etc. Supports P2P access including FE/GE and even 10GE; some can even directly support FTTC applications and support copper access such as ADSL/VDSL.
  • the main control board and the uplink circuit board of the OLT device can provide GE, 10GE, or even 40GE and 100GE network-side uplink interfaces.
  • the downlink access interface of the OLT device is connected to the optical fiber.
  • the OLT device does not provide a cable (CABLE) interface.
  • the CMTS device is a device system located at the front end of the cable TV network that allows cable operators to provide high-speed Internet access to home computers.
  • the basic characteristics of the CMTS device are:
  • the equipment basically adopts the middle backplane structure, and the front and rear interfaces of the insert frame are all outgoing interfaces;
  • the main control board On the front side of the subrack, arrange the main control board and the uplink/downlink radio processing circuit board.
  • the main control board provides the uplink interface (GE, 10GE) on the network side.
  • the other side of the subrack arranges the RF interface board.
  • the PON or Ethernet interface is not provided in the circuit board area of the CMTS equipment.
  • the OLT device and the CMTS device are two sets of different devices.
  • the network-side uplink interface of the CMTS needs to be connected to the downlink access interface of the OLT device.
  • the simultaneous use of two separate sets of equipment will inevitably result in huge investments and high costs.
  • the technical problem to be solved by the present invention is to provide an access device that can be compatible with existing OLT components that have been developed, and that can implement the functions of the CMTS, support large-capacity cable access, and achieve low-cost targets.
  • the present invention provides an access device including a main control unit, an OLT circuit board, a backplane, a CMTS circuit board, and a CMTS interface board.
  • the OLT circuit board is electrically connected to the main control unit through the backplane
  • the CMTS circuit board is electrically connected to the main control unit through the backplane
  • the CMTS interface board is electrically connected to the CMTS line.
  • a board, and the CMTS interface board provides a plurality of interfaces for externally connecting the coaxial cable, and the user end is connected to the network side through the OLT circuit board, and the user end is implemented by the CMTS circuit board and the CMTS interface board. Interconnection with the network side.
  • the backplane includes a first backplane and a second backplane, and the main control unit and the OLT circuit board are electrically connected to the first backplane, and part of the signals of the CMTS circuit board are electrically connected to the The first backplane, another part of the signal of the CMTS circuit board is electrically connected to the second backplane, the first backplane and the second backplane are back to back, the OLT circuit board and the CMTS
  • the circuit board is located at one side of the first and second back boards, and the CMTS interface board is located at the other side of the first and second back boards.
  • the backplane includes a first backplane and a second backplane, and the main control unit and the OLT circuit board are electrically connected to the first backplane, and part of the signals of the CMTS circuit board are electrically connected to the The first backplane, another part of the signal of the CMTS circuit board is electrically connected to the second backplane, the first backplane is coplanar with the second backplane, the OLT circuit board, the CMTS The circuit board and the CMTS interface board are located on the same side of the first and second backplanes.
  • the CMTS interface board and the CMTS circuit board are electrically connected through the second backplane or through a connector independent of the second backplane, and the CMTS interface board and the CMTS line are implemented. Transmission of RF signals between boards.
  • the CMTS interface board includes at least one RF interface board and at least one RF switch, the RF interface board is in one-to-one correspondence with the RF switch, wherein each of the RF interface boards is electrically connected to one of the RF switches;
  • the CMTS circuit board includes at least one circuit board unit and at least one circuit board backup unit, and the electrical connection between the main control unit and the circuit board unit and the circuit board backup unit is implemented by the backplane, the CMTS The circuit board units of the circuit board are electrically connected to the RF interface board, respectively, and the circuit board backup unit is electrically connected to the RF switch, respectively.
  • the RF switch is an electronic switch or a relay.
  • the P2P circuit board is electrically connected to the OLT circuit board through the backplane, and the P2P circuit board is connected to the user end through an optical fiber to implement interconnection between the user end and the network side.
  • the XPON circuit board further includes an XPON circuit board electrically connected to the OLT circuit board or the main control unit through the backplane to connect the XPON circuit board to an uplink interface, the XPON circuit board
  • the fiber is connected to the client to connect the client to the network.
  • the present invention further provides a network system, including a network side device, a client device, and the access device, where the network side device is implemented by using the OLT circuit board of the access device.
  • the interconnection between the network side device and the user side device is also implemented by the CMTS circuit board and the CMTS interface board.
  • the network side device supports the uplink service processing board of the GE/10GE/40GE/100GE, and the user side device is a router or an optical network terminal device.
  • the access device provided by the present invention includes an OLT circuit board, a CMTS circuit board, and a CMTS interface board.
  • the OLT circuit board implements interconnection between the user end and the network side, and simultaneously implements the user end through the CMTS circuit board and the CMTS interface board. Interconnection with the network side.
  • the access device of the present invention is integrated
  • the functions of the OLT circuit board and the CMTS interface enable both OLT functions and CMTS functions, as well as support for OLT applications and cable access applications. This allows traditional communication equipment vendors to enter the Cable market with minimal cost.
  • FIG. 1 is a schematic diagram of a hardware architecture of an access device according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an access device in a first embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a front interface of the access device shown in FIG. 2.
  • FIG. 4 is a schematic diagram of a back interface of the access device shown in FIG. 2.
  • FIG. 5 is a schematic diagram of an access device in a second embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an interface of the access device shown in FIG. 5.
  • Figure 7 is a diagram showing an application signal transmission circuit of a CMTS circuit board of the access device of the present invention.
  • FIG. 8 is a diagram showing an application signal transmission circuit of an OLT circuit board corresponding to P2P of the access device of the present invention.
  • FIG. 9 is a diagram showing an application signal transmission circuit of an OLT circuit board corresponding to an XPON of the access device of the present invention.
  • an OLT device is an important central office device.
  • the access device provided by the present invention can implement an OLT function, that is, a switch or a route with a front end (aggregation layer or core layer).
  • the device can also realize the function of CMTS (Cable Modem Terminal System) by using optical fiber or network cable connection, and supports large-capacity cable access.
  • CMTS Code Modem Terminal System
  • the access device provided by the present invention can be innovatively improved on the basis of the original OLT device, and the CMTS function module is added to realize the compatibility between the CMTS function and the OLT function; the access device provided by the present invention can also be used in a brand new device.
  • the OLT function module and the CMTS function module are designed to realize interconnection between the network side and the user side.
  • circuit board in the following description, that is, the line card, for example, the OLT circuit board is called an OLT line card in practical applications, and the CMTS circuit board is called a CMTS line card in practical applications.
  • FIG. 1 is a hardware structural diagram of an access device according to the present invention.
  • the access device includes a main control unit 10, an OLT circuit board 20, a backplane 30, a CMTS circuit board 40, and a CMTS interface board 50.
  • the OLT circuit board 20 is electrically connected to the main control unit 10 through the back board 30, and the CMTS circuit board 40 is electrically connected to the main control unit 10 through the back board 30.
  • the CMTS interface board 50 is electrically connected to the CMTS circuit board 40, and the CMTS interface board 50 provides a plurality of interfaces for externally connecting coaxial cables, that is, a cable access interface.
  • the interface of the external connection cable is an RF connector.
  • the user end is connected to the network side through the OLT circuit board 20, and the user end and the network side are interconnected through the CMTS circuit board 40 and the CMTS interface board 50.
  • the main control unit 10 can also be a switch.
  • the main control unit 10 simultaneously provides forwarding and switching channels for the OLT circuit board 20 and the CMTS circuit board 40.
  • the main control unit 10 simultaneously completes the OLT circuit board 20 and the CMTS circuit board. 40 control and management.
  • the access device further includes a power module (not shown) that provides DC power input to the OLT circuit board 20, the CMTS circuit board 40, and the CMTS interface board 50.
  • the access device further includes an uplink service processing unit 60.
  • the uplink service processing unit 60 is connected between the main control unit 10 and the network side, and is connected to the network side through an uplink interface.
  • the uplink service processing unit 60 may be a separate circuit board structure or integrated in the main control unit 10 as one uplink module in the main control unit 10.
  • the access device provided by the present invention includes an OLT circuit board 20 and a CMTS circuit board 40 and a CMTS.
  • the interface board 50 interconnects the user end and the network side through the OLT circuit board 20, and interconnects the user end and the network side through the CMTS circuit board 40 and the CMTS interface board 50.
  • the access device of the present invention integrates the functions of the OLT circuit board 20 and the CMTS interface, and can implement the OLT function and the CMTS function, and simultaneously supports the OLT application and the cable access application. This allows traditional communication equipment vendors to enter the Cable market with minimal cost.
  • the OLT circuit board 20 and the CMTS circuit board 40 of the access device provided by the present invention share the backplane 30 and the main control unit 10, that is, the OLT circuit board 20 and the CMTS circuit board 40 pass through the same backplane 30 and the same main
  • the control unit 10 implements data exchange between the two.
  • the access device provided by the invention is applied to the network system, and can realize the OLT function and the CMTS function, and does not need two independent OLT devices and CMTS devices, thereby saving network resources.
  • the backplane 30 includes a first backplane 32 and a second backplane 34.
  • the main control unit 10 and the OLT circuit board 20 are electrically connected to the first backplane 32, and the part of the CMTS circuit board 40.
  • a signal is electrically coupled to the first backplane 32, and another portion of the signal of the CMTS circuit board 40 is electrically coupled to the second backplane 34.
  • the second backplane 34 provides control signals and power signals to the CMTS interface board 50.
  • the distribution architecture of the first backplane 32 and the second backplane 34 in the access device chassis may be set according to a specific use environment. For example, as shown in FIG. 2, FIG. 3 and FIG. 4, in the first implementation manner, The distribution architecture, shown in Figures 5 and 6, is the distribution architecture in the second embodiment.
  • the first backplane 32 and the second backplane 34 are back to back, and the OLT circuit board 20 and the CMTS circuit board 40 are located on the first and second backs.
  • One side of the plates 32, 34, the CMTS interface board 50 is located on the other side of the first and second back plates 32, 34.
  • the first backboard 32 and the second backplane 34 are disposed back to back in the middle area of the chassis, thereby separating the front area and the back area from the chassis.
  • the left side of the first back board 32 in FIG. 2 is a front area
  • the second back The right side of the plate 34 is the back area.
  • the OLT circuit board 20 and the CMTS circuit board 40 are located in the front area, and the CMTS interface board 50 is located in the back area. Further, a fan is also disposed in the frontal area.
  • FIG. 3 is a schematic diagram of the front interface of the access device shown in FIG. 2, and the front area can support the complete application of the OLT.
  • the front area includes a main control unit 10 and a circuit board area C.
  • the circuit board area C includes an OLT circuit board 20 and a CMTS circuit board 40.
  • the circuit board area C can also support PON applications (GPON, EPON, 10G G/EPON, ...), P2P applications, and support GE/10GE/40GE/ on the network side. Uplink service processing board such as 100GE.
  • the back interface includes a control board 11 and an interface board area F.
  • the interface board area F supports the CMTS interface board 50.
  • the CMTS interface board 50 is an RF interface board, and provides an externally connected cable connection through the RF interface board.
  • the connection and routing of the RF interface of the access device provided by the present invention are consistent with the traditional CMTS device routing style.
  • the first backplane 32 and the second backplane 34 are coplanar, the OLT circuit board 20, the CMTS circuit board 40, and the CMTS interface board. 50 is located on the same side of the first and second back plates 32, 34.
  • the first backplane 32 and the second backplane 34 may be formed by splicing two circuit boards or integrated on one circuit board.
  • all the interfaces of the access device are disposed on the front side, and are divided into two areas, namely an OLT area and an RF interface area. As shown in FIG. 5, the OLT area is located above the RF interface area, and the OLT area includes the main control unit 10 and the circuit board area C.
  • the circuit board area C includes an OLT circuit board 20 and a CMTS circuit board 40.
  • the circuit board area C can also support PON applications (GPON, EPON, 10G G/EPON, ...), P2P applications, and support GE/10GE/40GE/ on the network side. Uplink service processing board such as 100GE.
  • the RF interface area includes the interface board area F and supports the CMTS interface board 50.
  • the CMTS interface board 50 is an RF interface board, and provides an external connection cable connection through the RF interface board.
  • the connection and routing of the RF interface of the access device provided by the present invention are consistent with the traditional CMTS device routing style.
  • the fan frame is located at the top of the access device.
  • the CMTS interface board 50 and the CMTS circuit board 40 are electrically connected through the second backplane 34 or through a connector independent of the second backplane 34 to implement the CMTS connection. Transmission of radio frequency signals between the interface board 50 and the CMTS circuit board 40.
  • the CMTS interface board 50 includes at least one RF interface board 52 and at least one RF switch 54, the RF interface board 52 is in one-to-one correspondence with the RF switch 54, wherein each of the RF interface boards 52 is electrically connected to one of the RF switches 54.
  • the CMTS circuit board 40 includes at least one circuit board unit and at least one circuit board backup unit, and the power of the main control unit 10 and the circuit board unit 42 and the circuit board backup unit 44 is realized by the back board 30. Connected, the circuit board units 42 are electrically connected to the RF interface board 52, respectively, and the circuit board backup unit 44 is electrically connected to the RF switch 54, respectively.
  • the CMTS circuit board 40 unit fails, the CMTS circuit board backup unit 44 continues to operate in place of the CMTS circuit board unit 42 by switching of the RF switch 54.
  • the RF switch 54 is an electronic switch or relay.
  • the access device further includes a P2P circuit board 70.
  • the P2P circuit board 70 is electrically connected to the OLT circuit board 20 through the backplane 30.
  • the P2P circuit board 70 is connected to the user end through an optical fiber to implement the user. The interconnection between the end and the network side.
  • the access device further includes an XPON circuit board 80 electrically connected to the OLT circuit board 20 or the main control unit 10 through the backplane 30 to connect the XPON circuit board 80.
  • the XPON circuit board 80 is connected to the user end through an optical fiber to implement interconnection between the user end and the network side.
  • the interface of the plurality of externally connected cables provided by the CMTS interface board 50 is an RF interface, and supports tens of thousands to hundreds of thousands of cable cable accesses.
  • At least three signals can be transmitted, please refer to FIG. 7 to FIG.
  • Figure 7 is a diagram showing the application signal transmission circuit of the CMTS circuit board 40 of the inventive access device.
  • the signal from the front-end network side enters the uplink service processing unit 60 through the uplink interface, and the uplink service processing unit 60 processes the signal and transmits the signal to the main control unit 10, through the main control unit 10.
  • the switching process, the signal is transmitted to the CMTS circuit board 40 through the backplane 30, and finally the signal is transmitted to the user end through the coaxial cable through the RF interface of the RF interface board 52.
  • FIG. 8 is a diagram showing an application signal transmission circuit of the OLT circuit board 20 corresponding to the P2P of the access device of the present invention.
  • the signal from the front-end network side enters the uplink service processing unit 60 through the uplink interface, and the uplink service processing unit 60 processes the signal and transmits the signal to the main control unit 10, through the exchange processing of the main control unit 10, and then through the backplane.
  • 30 transmits the signal to the OLT circuit board 20, and the OLT circuit board 20 transmits the signal to the P2P circuit board 70, and the P2P circuit board 70 transmits the signal to the user terminal, where the user terminal can be a bank user or a corporate user.
  • FIG. 9 is a diagram showing an application signal transmission circuit diagram of the OLT circuit board 20 corresponding to the XPON of the access device of the present invention.
  • the signal from the front-end network side enters the uplink service processing unit 60 through the uplink interface, and the uplink service processing unit 60 processes the signal and transmits the signal to the main control unit 10, through the exchange processing of the main control unit 10, and then through the backplane.
  • the signal is transmitted to the OLT circuit board 20, the OLT circuit board 20 transmits the signal to the XPON circuit board 80, and then the XPON circuit board 80 transmits the signal to the user end, and the XPON circuit board 80 is connected to the user end through the optical fiber.
  • the present invention further provides a network system, including a network side device, a user equipment, and the access device, and the network side device and the user side device are implemented by the OLT circuit board of the access device.
  • the interconnection between the network side device and the user side device is also implemented by the CMTS circuit board and the CMTS interface board.
  • the network side device supports the uplink service processing board of the GE/10GE/40GE/100GE, and the user side device is a router or an optical network terminal device.

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

Abstract

L'invention concerne un dispositif d'accès comprenant une unité de commande principale, un panneau de ligne de terminal de ligne optique (OLT), un panneau arrière, un panneau de ligne CMTS et un panneau d'interface CMTS. Le panneau de ligne OLT est connecté électriquement à l'unité de commande principale par l'intermédiaire du panneau arrière, le panneau de ligne CMTS est électriquement connecté à l'unité de commande principale par l'intermédiaire du panneau arrière, le panneau d'interface CMTS est électriquement connecté au panneau de ligne CMTS, et le panneau d'interface CMTS fournit de multiples interfaces pour se connecter de manière externe à des câbles coaxiaux. L'interconnexion entre un côté utilisateur et un côté réseau est réalisée par l'intermédiaire du panneau de ligne OLT, et, en même temps, l'interconnexion entre le côté utilisateur et le côté réseau est réalisée par l'intermédiaire du panneau de ligne CMTS et le panneau d'interface CMTS. Le dispositif d'accès intègre les fonctions d'un OLT et d'un CMTS, ce qui permet d'atteindre l'objectif de coûts faibles. La présente invention concerne également un système de réseau.
PCT/CN2014/091276 2014-11-17 2014-11-17 Dispositif d'accès et système de transmission par réseau WO2016077960A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2014/091276 WO2016077960A1 (fr) 2014-11-17 2014-11-17 Dispositif d'accès et système de transmission par réseau
CN201480007122.1A CN105900356B (zh) 2014-11-17 2014-11-17 接入设备及网络通信系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/091276 WO2016077960A1 (fr) 2014-11-17 2014-11-17 Dispositif d'accès et système de transmission par réseau

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CN102082684A (zh) * 2009-12-01 2011-06-01 华为技术有限公司 业务配置转换方法、装置及系统
CN101997725A (zh) * 2010-11-25 2011-03-30 中兴通讯股份有限公司 一种基于pon承载docsis业务的系统和装置
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CN105900356A (zh) 2016-08-24

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