WO2013135158A1 - Procédé d'encapsulation de message de gestion basé sur ieee oam, module d'interface radiofréquence c-docsis et module de commande de système - Google Patents

Procédé d'encapsulation de message de gestion basé sur ieee oam, module d'interface radiofréquence c-docsis et module de commande de système Download PDF

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Publication number
WO2013135158A1
WO2013135158A1 PCT/CN2013/072436 CN2013072436W WO2013135158A1 WO 2013135158 A1 WO2013135158 A1 WO 2013135158A1 CN 2013072436 W CN2013072436 W CN 2013072436W WO 2013135158 A1 WO2013135158 A1 WO 2013135158A1
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WO
WIPO (PCT)
Prior art keywords
cdmm
pdu
transport layer
ieee
oam
Prior art date
Application number
PCT/CN2013/072436
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English (en)
Chinese (zh)
Inventor
秦龑龙
邓延军
盛志凡
徐蓓
汝继刚
杨家胜
李忠炤
罗晓令
Original Assignee
国家广播电影电视总局广播电视规划院
深圳市天威视讯股份有限公司
北京数码视讯科技股份有限公司
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 国家广播电影电视总局广播电视规划院, 深圳市天威视讯股份有限公司, 北京数码视讯科技股份有限公司 filed Critical 国家广播电影电视总局广播电视规划院
Publication of WO2013135158A1 publication Critical patent/WO2013135158A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/34—Signalling channels for network management communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2801—Broadband local area networks

Definitions

  • the present invention relates to the field of communications, and in particular to a method for encapsulating management information (CDMM) based on IEEE OAM in a system based on broadband access of a coaxial cable, a radio frequency interface module and a system control module of C-DOCSIS.
  • CDMM management information
  • the broadband access system based on coaxial cable is solved by China Radio and Television Administration to solve the problem of domestic next-generation broadband access technology and two-way network transformation. It is based on DOCSIS 3.0 standard technology and combines domestic passive optical network (PON hybrid optical copper network (HFC edge). The reality of the broadband access network, and the development of the Chinese DOCSIS technical standard.
  • the broadband access system based on the coaxial cable includes the radio frequency interface module, the classification forwarding module and the system control module, wherein the system control module and the radio interface module need to be The services in the uplink and downlink data transmission direction exchange configuration, status and management information. The loose coupling between the two modules can support the coaxial distributed implementation and ensure the interoperability between DOCSIS components of different vendors.
  • the existing DOCSIS system design does not provide an interface for this standard, so it cannot support the distributed implementation of the system control module and the RF interface module based on standard interoperability.
  • how to implement information exchange configuration and state management between the DOCSIS system control module and the radio interface module, and perform classification and forwarding of service flows and priority mapping messages to the upper layer aggregation network (especially the passive optical network PON network) Control and management are still blank in the current traditional DOCSIS system, and there is no relevant application and specification. Therefore, it is difficult to solve technical problems such as information interaction, configuration and management of DOCSIS service flow on the existing PON aggregation network. Summary of the invention
  • the present invention provides an IEEE OAM based management information (CDMM) encapsulation method, including: Step 1: When the length of the CDMM is greater than the maximum transmission length of the transport layer, the CDMM is frame-sliced, and each fragment is a protocol data unit (PDU) of the CDMM, and the CDMM includes a first PDU and Subsequent PDU;
  • PDU protocol data unit
  • Step 2 The frame-sliced CDMM is encapsulated in an IEEE OAM-based transport layer, where the first PDU includes a reserved field for identifying a radio frequency output port, an opcode field of a CDMM message, and a CDMM. a session ID field and a data field associated with the opcode; the subsequent PDU includes a data field associated with the opcode.
  • the CDMM message frame encapsulated in the IEEE OAM based transport layer comprises a transport layer protocol header and message content.
  • the encapsulation of the CDMM in the IEEE OAM based transport layer is performed in a radio frequency interface module and a system control module.
  • the CDMM is used to exchange configuration, status and management information between the system control module and the radio interface module, including channel and parameter configuration, transmit or receive status and statistics, load balancing, cable modem status, cable modem Registration information, dynamic business flow operations, multicast and security information.
  • the present invention also provides a C-DOCSIS radio frequency interface module for encapsulating a CDMM in an IEEE OAM-based transport layer, wherein the radio frequency interface is when the length of the CDMM is greater than the maximum transmission length of the transport layer.
  • the module performs frame fragmentation on the CDMM, each fragment is a protocol data unit (PDU) of the CDMM, the CDMM includes a first PDU and a subsequent PDU; and the CDMM after the frame is fragmented is based on IEEE
  • the first PDU includes a reserved field for identifying a radio frequency output port, an opcode of a CDMM message, a session ID field of the CDMM, and a data field associated with the opcode; the subsequent The PDU includes data related to the opcode.
  • the CDMM message frame encapsulated in the IEEE OAM based transport layer comprises a transport layer protocol header and message content.
  • the radio frequency interface module transmits the CDMM encapsulated in the IEEE OAM based transport layer to the system control module through the network; the system control module is based on the received The CDMM encapsulated in the transport layer of the IEEE OAM transmits a corresponding response frame.
  • the invention also proposes a system control module of C-DOCSIS for encapsulating a CDMM in an IEEE OAM based transport layer, characterized in that when the length of the CDMM is greater than the maximum transmission length of the transport layer, the system The control module performs frame fragmentation on the CDMM, each fragment is a protocol data unit (PDU) of the CDMM, the CDMM includes a first PDU and a subsequent PDU; and the CDMM after the frame is fragmented is based on
  • the first PDU includes a reserved field for identifying a radio frequency output port, an opcode of a CDMM message, a session ID field of the CDMM, and a data field associated with the opcode;
  • the subsequent PDU includes data related to the opcode.
  • the CDMM message frame encapsulated in the IEEE OAM based transport layer comprises a transport layer protocol header and message content.
  • the system control module transmits the CDMM encapsulated in the IEEE OAM-based transport layer to the radio frequency interface module through the network; the radio frequency interface module receives the received CDMM encapsulated in the IEEE OAM-based transport layer. Send the corresponding response frame.
  • the IEEE OAM-based management information encapsulation method, the C-DOCSIS radio interface module and the system control module proposed by the invention can realize the distributed configuration of the system control module and the radio frequency interface module based on standard interoperability, and can implement the system control module.
  • Exchange configuration, status, and management information with the RF interface module to achieve a distributed architecture of the C-DOCSIS system by implementing loose coupling between the two modules and to ensure interoperability between C-DOCSIS components from different vendors .
  • Figure 1 is a flow chart of the method of the present invention
  • FIG. 2 is a schematic diagram of a format of a first PDU of the present invention
  • FIG. 3 is a schematic diagram of a format of a subsequent PDU of the present invention.
  • FIG. 4 is a schematic structural diagram of a CDMM message frame according to the present invention.
  • FIG. 5 is a schematic structural diagram of a response frame according to the present invention
  • FIG. 6 is a schematic diagram of response encoding of the response frame in FIG. 5;
  • FIG. 8 is a schematic diagram of the structure of the C-DOCSIS system. detailed description
  • the present invention provides a method for encapsulating IEEE OAM-based management information (CDMM).
  • the method includes: Step 1. When the length of the CDMM is greater than the maximum transmission length of the transport layer, the CDMM is framed. Fragmenting, each fragment is a protocol data unit (PDU) of the CDMM, the CDMM includes a first PDU and a subsequent PDU; and step 2, the fragmented CDMM is in an IEEE OAM-based transport layer Encapsulation in the middle.
  • PDU protocol data unit
  • the CDMM is used to exchange configuration, status and management information between the system control module and the radio interface module, including channel and parameter configuration, transmit or receive status and statistics, load balancing, cable modem status, cable modem Registration information, dynamic business flow operations, multicast and security information.
  • the CDMM encapsulated by the method of the present invention can implement a distributed configuration based on standard interoperability of the system control module and the radio frequency interface module, and can exchange configuration, status and management information between the system control module and the radio frequency interface module, by implementing Loose coupling between the two modules to achieve a distributed architecture of the C-DOCSIS system and to ensure interoperability between C-DOCSIS components from different vendors.
  • FIG. 2 and FIG. 3 are schematic diagrams of the format of a first PDU and a subsequent PDU, where the first PDU includes a PDU version number field (Version), a reserved field (Reserved) for identifying a radio frequency output port, and an operation of a CDMM message.
  • the subsequent PDU includes a data field (Data) associated with the opcode.
  • the first PDU includes: 1-byte PDU version number field, the value is 0x01;
  • 1 byte is used to identify the reserved field of the RF output port.
  • this field is also used to identify the RF interface.
  • the opcode field of the 2-byte CDMM message identifying the type of operation the message needs to perform
  • each C-DOCSIS CDMM request or response process uses a unique session ID, which is used to identify a complete session process;
  • the CDMM message frame encapsulated in the IEEE OAM-based transport layer includes a fixed organization unique identifier (OUI), a transport layer protocol header, and message content.
  • the message content is a PDU or a response code;
  • the transport layer protocol header includes an identifier indicating whether the CDMM message frame includes a PDU or a response code.
  • the Transport Layer Header includes:
  • a 1-byte identification transport layer protocol header contains a PUD field (Type) for identifying whether the transport layer protocol header is followed by a PDU or a transport layer response;
  • the total number of Expected Frames in the 2-byte CDMM is used to identify the total number of frames included in the CDMM.
  • the 1-byte CDMM byte count ( Length ) that identifies the number of bytes in the CDMM in the frame.
  • the encapsulation of the CDMM in the IEEE OAM-based transport layer is performed in a radio frequency interface module and a system control module.
  • the radio interface module 71 transmits the CDMM encapsulated in the IEEE OAM-based transport layer to the system control module 72 through the network, and the system control module 72 receives the received CDMM encapsulated in the IEEE OAM-based transport layer. Sending a corresponding response frame; at the same time, the system control module 72 transmits the CDMM encapsulated in the IEEE OAM-based transport layer to the radio interface module 71 through the network; the radio interface module 71 pairs the received IEEE OAM based The CDMM that is encapsulated in the transport layer sends the corresponding response frame.
  • Step 7 is a flowchart of correct transmission between the RF interface module 71 and the system control module 72 and a post-failure retransmission of the CDMM of the present invention, including: Step 1: Radio interface module or system control module (send Party 700) sends a CDMM PDU frame; Step 2: After receiving the CDMM PDU, the system control module or the RF interface module (receiver 800) sends a response PDU with a response code of 0x00, indicating that the correct receipt is received.
  • Step 1 Radio interface module or system control module (send Party 700) sends a CDMM PDU frame
  • Step 2 After receiving the CDMM PDU, the system control module or the RF interface module (receiver 800) sends a response PDU with a response code of 0x00, indicating that the correct receipt is received.
  • Step 3 The sender 700 sends the PDU frame of the next CDMM; Step 4: If the receiving party 800 does not send the response PDU due to the transmission failure or the receiver 800 processing delay, the sender 700 sends a PDU frame of the CDMM that retransmits the unanswered after the timeout; Step 5 ⁇ If the acknowledgment response is not received 3 times, the sender 700 abandons the transmission and reports the CDMM channel failure to the receiver 800.
  • the present invention also provides a C-DOCSIS radio frequency interface module for encapsulating a CDMM in an IEEE OAM-based transport layer, wherein when the length of the CDMM is greater than a maximum transmission length of the transport layer, the radio interface module pair
  • the CDMM performs frame fragmentation, each fragment is a protocol data sheet (PDU) of the CDMM, the CDMM includes a first PDU and a subsequent PDU; and the CDMM after the frame is fragmented is based on IEEE OAM Encapsulation in the transport layer.
  • PDU protocol data sheet
  • the present invention further provides a system control module for C-DOCSIS for encapsulating a CDMM in an IEEE OAM-based transport layer, characterized in that when the length of the CDMM is greater than the maximum transmission length of the transport layer, the system The control module performs frame fragmentation on the CDMM, each fragment is a protocol data unit (PDU) of the CDMM, the CDMM includes a first PDU and a subsequent PDU; and the CDMM after the frame is fragmented is based on Encapsulation is performed in the transport layer of IEEE OAM.
  • PDU protocol data unit
  • the IEEE OAM-based management information encapsulation method, the C-DOCSIS radio interface module and the system control module proposed by the invention can realize the distributed configuration of the system control module and the radio frequency interface module based on standard interoperability, and can implement the system control module.
  • Exchange configuration, status, and management information with the RF interface module to achieve a distributed architecture of the C-DOCSIS system by implementing loose coupling between the two modules and to ensure interoperability between C-DOCSIS components from different vendors .

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

Abstract

L'invention concerne un procédé d'encapsulation d'un message de gestion basé sur IEEE OAM (CDMM), qui comprend les étapes suivantes : étape 1 : lorsque la longueur d'un CDMM est supérieure à la longueur de transport maximale de la couche de transport, réalisation d'une fragmentation sur le CDMM, chaque fragment étant une unité de données de protocole (PDU) du CDMM, et le CDMM comprenant une première PDU et les PDU suivantes ; et étape 2 : encapsulation dans une couche de transport basée sur IEEE OAM du CDMM sur laquelle la fragmentation de trame est effectuée, la première PDU comprenant un champ de numéro de version de PDU servant à identifier un champ réservé d'un port de sortie radiofréquence, un champ de code d'opération du message CDMM, un champ d'identification de session du CDMM, et un champ de données relatives à un code d'opération, et un message CDMM qui est encapsulé dans la couche de transport basée sur IEEE OAM comprenant un en-tête de protocole de couche de transport et un contenu de message. Un CDMM qui est encapsulé à l'aide de la présente invention peut réaliser une configuration répartie basée sur l'interopérabilité standard d'un module de commande de système et d'un module d'interface radiofréquence, et peut échanger des messages de configuration, de statut et de gestion entre le module de commande de système et le module d'interface radiofréquence.
PCT/CN2013/072436 2012-03-12 2013-03-12 Procédé d'encapsulation de message de gestion basé sur ieee oam, module d'interface radiofréquence c-docsis et module de commande de système WO2013135158A1 (fr)

Applications Claiming Priority (2)

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CN201210064249.XA CN102624561B (zh) 2012-03-12 2012-03-12 一种基于ieee oam的管理信息的封装方法、c-docsis的射频接口模块和系统控制模块
CN201210064249.X 2012-03-12

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Cited By (1)

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CN105323149A (zh) * 2015-05-19 2016-02-10 洛阳德威机电科技有限公司 一种信息传递的方法与系统

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CN102624561B (zh) * 2012-03-12 2014-12-17 国家广播电影电视总局广播电视规划院 一种基于ieee oam的管理信息的封装方法、c-docsis的射频接口模块和系统控制模块
CN104283837B (zh) * 2013-07-01 2018-07-03 广州珠江数码集团股份有限公司 溯源关系建立方法及装置
EP3152871B1 (fr) * 2014-07-08 2018-09-19 Huawei Technologies Co., Ltd. Fonction oam générique (operations administration and management)
WO2016187785A1 (fr) * 2015-05-25 2016-12-01 华为技术有限公司 Procédé, dispositif et système de transmission de messages

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WO2008141169A1 (fr) * 2007-05-09 2008-11-20 Entropic Communications, Inc. Regroupement de paquets réseau pour une transmission à un nœud de destination
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CN102624561A (zh) * 2012-03-12 2012-08-01 国家广播电影电视总局广播电视规划院 一种基于ieee oam的管理信息的封装方法、c-docsis的射频接口模块和系统控制模块
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WO2008141169A1 (fr) * 2007-05-09 2008-11-20 Entropic Communications, Inc. Regroupement de paquets réseau pour une transmission à un nœud de destination
CN101426004A (zh) * 2007-10-29 2009-05-06 华为技术有限公司 三层会话的接入方法、系统及设备
CN102624561A (zh) * 2012-03-12 2012-08-01 国家广播电影电视总局广播电视规划院 一种基于ieee oam的管理信息的封装方法、c-docsis的射频接口模块和系统控制模块
CN102624560A (zh) * 2012-03-12 2012-08-01 深圳市天威视讯股份有限公司 一种分布式部署、集中式控制的有线电视网络宽带接入系统

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Publication number Priority date Publication date Assignee Title
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