WO2010054587A1 - 多业务传送网中管理gpon支路的方法、设备及系统 - Google Patents

多业务传送网中管理gpon支路的方法、设备及系统 Download PDF

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Publication number
WO2010054587A1
WO2010054587A1 PCT/CN2009/074876 CN2009074876W WO2010054587A1 WO 2010054587 A1 WO2010054587 A1 WO 2010054587A1 CN 2009074876 W CN2009074876 W CN 2009074876W WO 2010054587 A1 WO2010054587 A1 WO 2010054587A1
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Prior art keywords
transport network
packet
uplink
downlink
node
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PCT/CN2009/074876
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English (en)
French (fr)
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蔡涛
曹旸
周建林
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华为技术有限公司
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Publication of WO2010054587A1 publication Critical patent/WO2010054587A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q11/0067Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q2011/0079Operation or maintenance aspects

Definitions

  • the present invention relates to data communication technologies, and in particular, to a method, device and system for managing a GPON branch in a multi-service transport network.
  • GPON Gigabit-Passive Optical Network
  • FTTx Fiber To The Building/Cabinet/Curb/Home
  • FTTx Fiber To The Building/Cabinet/Curb/Home
  • FTTx Fiber To The Building/Cabinet/Curb/Home
  • FTTx Fiber To The Building/Cabinet/Curb/Home
  • FTTx Fiber To The Building/Cabinet/Curb/Home
  • the metropolitan area network is required to have the capability of interfacing with GPON to support the development of the future FTTx.
  • Multiple transmission modes coexist, multiple types of bearer technologies, poor business transparency; no real-time dynamic control protocol, difficult maintenance and management; no real-time dynamic bandwidth adjustment mechanism, low network bandwidth utilization, no strict QoS guarantee, large bandwidth BOD ( Bandwidth On Demand, bandwidth on demand) is difficult to meet.
  • N nodes also called transport network common nodes
  • S nodes also called transport network master nodes
  • the N nodes are common decentralized service access nodes, as shown in the figure.
  • Network nodes N2, N3, and N4 are TDM (Time Division Multiplex)/ATM (Asynchronous Transfer Mode) / ETH (Ethernet). , Ethernet) access node for the service.
  • the S node is also a node that interfaces with the upper layer network.
  • S1 and S2 are connected to the BRAS (Broadband Remote Access Server). Any node can be connected to the traditional TDM service, Ethernet data service, etc., and can also provide a PON (Passive Optical Network) tributary interface, and also provide 10GE and other uplink service interfaces on the S node.
  • the S node of the network architecture is also a centralized control management center of the network. The S node implements centralized configuration, management, and maintenance of the N nodes. The N-node also needs to report system events such as alarms and performance to the S node.
  • PON is characterized by a point-to-multipoint physical topology, consisting of OLT (Optical Line Terminal), ODN (Optical Distribution Network), and multiple The ONU (Optical Network Unit) is composed of ONUs.
  • OLT Optical Line Terminal
  • ODN Optical Distribution Network
  • the ONU Optical Network Unit
  • ONU can be embedded in PLOAM (Physical Layer OAM, Physical Layer OAM), OMCI ( ⁇ Management and Control Interface)
  • PLOAM Physical Layer OAM
  • OMCI ⁇ Management and Control Interface
  • the type 0 AM Operaation, Administration, Maintenance, Operation, Management, and Maintenance
  • the ONU is managed by the OLT, and many important functions such as ONU registration, ranging, alarm, and management performance monitoring are realized.
  • each OLT can only manage ONUs that are directly connected to itself, and cannot manage ONUs under other OLTs. Due to the large number of OLTs, remote centralized management cannot be realized, which brings difficulties to management and maintenance and increases management and maintenance costs.
  • Embodiments of the present invention provide a method, device, and system for managing a GPON branch in a multi-service transport network, and implementing remote centralized management of an ONU in a GPON branch in a multi-service transport network.
  • a method for managing a GPON branch in a multi-service transport network includes: after receiving a GAM branch uplink OAM packet, the transport network node converts the uplink OAM packet processed by the transport network master node into The uplink transport network control management message is sent to the transport network master node; after the transport network node receives the downlink transport network control management packet sent by the transport network master node, the downlink network control and management of the optical network unit is configured or queried. The message is converted to the GPON branch. The OAM packet is sent to the optical network unit.
  • a GPON branch interface unit configured to send and receive an uplink OAM message and a downlink OAM ⁇ message between the optical network unit and the optical network unit;
  • the transport network interface unit is used for transmitting and receiving the uplink transport network control between the transport network master node and the downlink transport network control management.
  • the conversion unit is respectively connected to the GPON branch interface unit and the transport network interface unit, and is configured to convert the uplink OAM packet processed by the transport network master node into an uplink transport network control management packet format, and The downlink transport network control management packet configured or queried by the network unit is converted into the downlink OAM packet of the GPON branch.
  • a system for managing a GPON branch in a multi-service transport network includes: a transport network node, a transport network master node,
  • the transport network node is configured to receive an uplink OAM packet of the GPON branch, and convert the uplink OAM packet processed by the transport network master node into an uplink transport network control management packet, and send the uplink OAM packet to the transport network master node;
  • the transport network master node is configured to receive an uplink transport network control management message, send a downlink transport network management message, and control the management packet according to the received uplink transport network control management message and the sent downlink transport network control, Network unit management;
  • the transport network node is further configured to receive a downlink transport network control management packet sent by the transport network master node for configuring or querying the optical network unit to be converted into a GPON branch downlink OAM packet, and send the packet to the optical network unit.
  • the method, device and system for managing a GPON branch in a multi-service transport network provided by the embodiment of the present invention, after receiving the uplink OAM packet of the GPON branch, the transport network node converts it into the above transport network control management message, and sends
  • the transport network master node is configured to enable the transport network master node to process the corresponding OAM information; after the transport network node receives the downlink transport network control management message sent by the transport network master node, the transport network node performs configuration or query downlink transmission.
  • the network control management packet is converted into a downlink OAM packet of the GPON branch and sent to the optical line terminal.
  • FIG. 1 is a schematic diagram of an application scenario of a multi-service transmission network
  • FIG. 2 is a schematic diagram of a network architecture of a multi-service transport network according to an embodiment of the present invention
  • FIG. 3 is a flowchart of processing an uplink OAM packet of a GPON branch in the embodiment of the present invention
  • FIG. 4 is a flowchart of processing a control packet of a downlink transport network in the embodiment of the present invention
  • FIG. 6 is another schematic structural diagram of a multi-service transport network node according to an embodiment of the present invention.
  • Fig. 7 is a schematic diagram showing the networking of a system for managing a GPON branch in a multi-service transport network according to an embodiment of the present invention.
  • a method for managing a GPON branch in a multi-service transport network implements remote centralized management of ONUs in a GPON branch.
  • the following is a description of the network architecture of the multi-service transport network.
  • FIG. 2 it is a schematic diagram of a network architecture of the multi-service transport network:
  • the network hierarchy includes a three-layer structure of a service adaptation layer, a channel layer, and a physical layer.
  • the service adaptation layer is responsible for uniformly encapsulating and decapsulating various services, and uniformly encapsulating various services into extended GEM (E-GEM) frames, and requires each service to be uniquely identified in the network.
  • E-GEM extended GEM
  • multiple E-GEM frames are combined into different types of transport container (T-CONT) frames, and channel overhead is formed into a channel layer.
  • All T-CONT frames form a Transport Convergence Layer (TC) frame, plus physical layer overhead, including fields such as frame header synchronization, management overhead, and bandwidth map, to facilitate communication and management of hosts in the network for easy adjustment.
  • TC Transport Convergence Layer
  • the allocated time slot of each T-CONT frame realizes dynamic bandwidth adjustment.
  • the types of services carried by the network can include three types: (1) fixed bandwidth services, called FBs.
  • AB sured Bandwidth
  • BE Best Effort business, such as ordinary Internet services.
  • class AB and BE services the network is a converged network, and the aggregation node is an S node, which implements dual backup.
  • the network is a peer-to-peer switching network, which can be used for TDM, SDH/SONET, and private lines from any node.
  • the service is accessed by the ONU.
  • the GPON signal is decapsulated from the GTC (GPON transmission convergence layer) to the T-CONT layer, and further decapsulated.
  • the GEM frame is regarded as the client signal of the service adaptation layer and is directly encapsulated into the E-GEM through the service adaptation layer.
  • This service mapping path can support the ODN network and ONU equipment of the existing GPON system, and guarantees the new network structure to support future FTTx development and support GPON docking.
  • some OAM messages may not require the participation of the transport network master node, such as ranging, power adjustment and other OAM messages, and only interact between the ONU and the transport network node; some OAM messages need and transport network owners
  • the nodes interact to implement remote centralized management of the ONUs in the GPON branch, such as alarm reporting by the ONU, query of the real-time alarm performance of the ONU by the NMS, and upgrade of the ONU software.
  • the OAM message that is not required to be processed by the primary node of the transport network is directly terminated at the GPON branch; for other OAM messages, it needs to be converted at the transport network node to implement the interaction between the ONU and the transport node master node.
  • the transport network node is used as a management agent of the connected GPON branch, and after receiving the uplink 0 AM message of the GPON branch, it is converted into an uplink transport network control management message and sent to the transport network master.
  • the downlink transport network control management packet configured or queried by the optical network unit is converted into a GPON branch downlink OAM packet and sent to the optical line.
  • the terminal realizes unified management of the GPON branch of the transport network master node. To include the following steps:
  • Step 301 the transmitting network node receives the uplink 0 AM message sent by the optical network unit; if yes, step 304 is performed; otherwise, step 303 is performed;
  • Step 303 Determine whether the uplink 0 AM packet is a PLO AM (physical layer OAM) packet. And the network master node processing is required; if yes, step 304 is performed; otherwise, step 307 is performed; step 304, the transport network node converts the uplink OAM packet into an uplink transport network control management message;
  • PLO AM physical layer OAM
  • Step 305 The transport network node sends the uplink transport network control management packet to the transport network main node.
  • Step 306 The transport network master node processes the OAM information in the uplink transport network control management.
  • Step 307 The transport network node directly processes the uplink OAM ⁇ message.
  • GPON defines PLOAM at the physical layer, and OMCI is defined at the upper layer to perform OAM management at multiple levels.
  • PLO AM is used to implement functions such as data encryption, status detection, and error detection.
  • the OMCI channel protocol is used to manage high-level defined services, including the ONU function parameter set, T-CONT service type and quantity, and QoS (Quality of Service, service). Quality) parameters, request configuration information and performance statistics, automatically notify the system of running events, implement OLT configuration, fault diagnosis, performance and security management of the ONU.
  • the transmitting network node detects the received OAM packet of the received GPON branch, and if it is an OMCI packet or an embedded OAM packet (that is, provided by the domain format information in the GTC header), It is determined that it needs to be sent to the transport network master node; if it is a PLOAM message, it needs to be determined according to the configuration information whether it needs to be sent to the transport network master node. For example, for the physical device error message, it is configured to be processed by the transport network master node, and according to the configuration information, the transport network node determines that it needs to be sent to the transport network master node; for the acknowledgement message, the configuration is not required to transmit the network.
  • the master node processes, according to the configuration information, the transport network node directly processes the message.
  • the transport network node needs to convert the uplink OAM packet into an uplink transport network control management packet, and according to the GPON branch uplink OAM packet format and the uplink transport network control management packet format, The mapping relationship converts the uplink OAM packet processed by the transport network master node into the uplink transport network control management packet format.
  • the embodiment of the present invention is not limited to this manner. For example, a certain conversion rule may be established, and the uplink OAM packet is converted into an uplink transport network control management packet.
  • the uplink OAM packet of the GPON branch is described in detail in the existing protocol, and is not described here.
  • the applicant of the present invention also provides an upper layer service management control method based on the multi-service transport network in the already filed patent application, and discloses two transport network control management documents, namely GMCI ( GEM based Transport Network Management and Control Interface, GEM-based transport network management control interface) message or ECC (Embedded Control Channel).
  • GMCI GEM based Transport Network Management and Control Interface
  • GEM-based transport network management control interface GEM-based transport network management control interface
  • ECC embedded Control Channel
  • the data area definition of the GMCI message is consistent with the data area of the OMCI of the existing protocol, and the outer layer is encapsulated by the E-GEM, adapted into the T-CONT frame of the multi-service transport network, and then passed through the TC frame in the multi-service transport network. Transfer.
  • the outer layer of the ECC 4 is encapsulated in the E-GEM, adapted into the T-CONT frame of the multi-service transport network, and then transmitted through the TC frame in the multi-service transport network.
  • FIG. 4 it is a processing flow of a control packet of a downlink transport network in the embodiment of the present invention, which mainly includes the following steps:
  • Step 401 The transport network node receives the downlink transport network control management packet sent by the transport network master node.
  • Step 402 The transport network node checks whether the received downlink transport network control management packet is configured or queries the transport network control management report of the ONU. If yes, go to step 404; otherwise, go to step 403;
  • the transport network node determines, according to the identifier of the downlink transport network control management packet, the identifier may be a specific field in the downlink transport network control management packet, and is used to distinguish different downlink transport network control management packets; for example, Use the identifier above 256 as the configuration or query transport network control management message;
  • Step 403 The transport network node processes the downlink transport network control management.
  • Step 404 The transport network node converts the downlink transport network control management packet into a GPON branch downlink packet
  • Step 405 Send the downlink packet to the ONU.
  • the transport network node needs to convert the downlink transport network control management packet into a GPON branch downlink OAM packet, and according to the GPON branch downlink OAM packet format and the downlink transport network control management report.
  • the mapping relationship of the text format converts the downlink transport network control management packet into a GPON branch downlink OAM packet.
  • a certain conversion rule may also be established, and the downlink transmission network control management packet is transferred. Change to the corresponding GPON branch downlink OAM packet.
  • the method for managing the GPON branch in the multi-service transport network the uplink OAM packet of the GPON branch that does not need to be processed by the master node of the transport network is directly terminated in the GPON branch, and other GPONs that need to be processed by the master node are directly processed.
  • the branch uplink OAM message is converted at the transport network node and sent to the master node for processing, thereby implementing unified management of the GPON branch of the transport network master node.
  • the embodiment of the present invention further provides a multi-service transport network node, as shown in FIG. 5, which is a schematic structural diagram of the multi-service transport network node:
  • the multi-service transport network node includes: a GPON branch interface unit 501, a conversion unit 502, and a transport network interface unit 503 that are sequentially connected. among them:
  • the GPON tributary interface unit 501 is an interface between the transport network node and the optical network unit, and is configured to send and receive uplink OAM packets and downlink OAM packets with the optical network unit, and may be an OMCI interface or an embedded OAM interface.
  • the transport network interface unit 503 is an interface between the transport network node and the transport network master node, and is used for transmitting and receiving the uplink transport network control management message and the downlink transport network control management message between the transport network master node, and may be a GMCI interface. , or ECC interface;
  • the converting unit 502 is configured to convert the uplink OAM ⁇ text that needs to be processed by the transport network master node into an uplink transport network control management packet format, and convert the downlink transport network control management packet configured or queried by the optical network unit into GPON.
  • the branch downlink OAM packet is configured to convert the uplink OAM ⁇ text that needs to be processed by the transport network master node into an uplink transport network control management packet format, and convert the downlink transport network control management packet configured or queried by the optical network unit into GPON.
  • the method further includes: a mapping unit 504, configured to store a mapping relationship between a GPON branch uplink OAM packet format and an uplink transport network control management packet format, and a GPON branch downlink The mapping relationship between the OAM packet format and the downlink transport network control management packet format.
  • a mapping unit 504 configured to store a mapping relationship between a GPON branch uplink OAM packet format and an uplink transport network control management packet format, and a GPON branch downlink The mapping relationship between the OAM packet format and the downlink transport network control management packet format.
  • the converting unit 502 can convert the received GPON branch uplink OAM data to the uplink transport network control management according to the mapping relationship; and control the downlink transport network for configuring or querying the optical network unit.
  • the management packet is converted into a downstream OAM packet of the GPON branch.
  • a certain conversion rule may be established, and the conversion list may be Element 502 performs the conversion of two different messages in accordance with the rule.
  • the multi-service transport network node in the embodiment of the present invention is not limited to the above structure.
  • the mapping relationship between the GPON branch OAM packet and the transport network control management packet may be saved on a separate server.
  • the multi-service transport network node can be used as a management agent of the GPON branch connected to the multi-service transport network, and realize unified management of the GPON branch of the transport network master node.
  • FIG. 6 another structure diagram of the multi-service transport network node is shown:
  • a first judging unit 505 and a processing unit 506 are further included.
  • the processing unit 506 is configured to process the uplink OAM, which is not required to be processed by the primary node of the transport network, for example, the ranging processing, the alarm processing, and the like, and the specific processing manner of the OLT for the OAM packet is the same as that of the OLT in the prior art.
  • the first determining unit 505 is configured to determine whether the uplink OAM packet received by the GPON tributary interface unit 501 needs to be processed by the transport network master node, and if necessary, the uplink OAM packet. The transmission to the conversion unit 502; if not required, the uplink OAM message is transmitted to the processing unit 506.
  • the processing unit 506 is further configured to process the downlink transport network control management, and the specific processing needs to be determined according to the content of the downlink OAM packet converted by the downlink transport network control management packet, where the embodiment of the present invention is
  • the multi-service transport network node further includes: a second determining unit 507, configured to determine whether the downlink transport network control management packet received by the transport network interface unit 503 is configured or configured for the optical network unit.
  • the downlink transport network control management message if yes, the downlink transport network control management message is transmitted to the converting unit 502, otherwise the downlink transport network control management message is transmitted to the processing unit 506.
  • the multi-service transport network node of the embodiment of the present invention is not limited to such a structure.
  • the first judging unit 505 and the second judging unit 507 may be integrated into one module, or the processing unit 506 may be split into two.
  • An independent module that processes uplink OAM messages that do not need to be processed by the transport network master node and downlink transport network control management packets that do not need to be sent to the optical network unit.
  • the GPON branch interface unit 501 can be an OMCI interface or an embedded OAM interface; the transport network interface unit 503 can be a GMCI interface, or an ECC interface.
  • the multi-service transport network node can be used as a management agent of the GPON branch connected to the multi-service transport network, and realize unified management of the GPON branch of the transport network master node, and can support OAM 4 text in multiple protocol formats.
  • the embodiment of the present invention further provides a system for managing a GPON branch in a multi-service transport network, as shown in FIG. 7, which is a schematic structural diagram of the system:
  • the system includes: a transport network node 701 and a transport network master node 702. among them:
  • a transport network node 701 configured to receive an uplink OAM packet of the GPON branch, and convert the uplink OAM packet processed by the transport network master node into an uplink transport network control management packet, and send the uplink OAM packet to the transport network master node;
  • the transport network master node 702 is configured to receive an uplink transport network control management packet, send a downlink transport network management packet, and control the management packet according to the received uplink transport network control packet and the sent downlink transport network control management packet to the optical network.
  • the transport network node 701 is further configured to convert the downlink transport network control management packet sent by the received transport network master node 702 to the optical network unit to be converted into a GPON branch downlink OAM packet, and send the packet to the optical network unit.
  • the structure of the transport network node 701 can be referred to in FIG. 5 and FIG. 6, and will not be described in detail herein.
  • transport network nodes there may be multiple transport network nodes, each connected to a different optical network unit, and a transport network node 701.
  • the transport network node forwards the uplink OAM packet processed by the transport network master node in the GPON branch to the transport network master node, and directly transmits the uplink OAM packet processed by the transport network master node.
  • the termination of the network node realizes the unified management of the GPON branch of the transport network master node, and improves the management efficiency.

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

多业务传送网中管理 GPON支路的方法、 设备及系统 本申请要求于 2008 年 11 月 13 日提交中国专利局、 申请号为 200810176482.0、 发明名称为"多业务传送网中管理 GPON支路的方法、 设备 及系统"的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及数据通信技术, 具体涉及一种多业务传送网中管理 GPON支 路的方法、 设备及系统。
背景技术
随着网络通信技术的发展,现有的网络可以承载多种业务,如语音、视频、 网络游戏、 网络浏览等。 近几年来, 网络带宽需求以指数规律增长, 虽然营运 商通过不断扩展物理带宽及相关技术,提高了网络承载和传送数据的能力,但 是物理带宽的增加总是落后于用户对于数据传输的要求。在大数据量的冲击下, 如何保证网络承载多种业务传送的可靠性和相应业务的 QoS ( Quality of Service, 服务质量), 已开展了很多的研究工作。 近两年来, 各大电信营运商 大都选择了以 GPON ( Gigabit-Passive Optical Network, 吉比特无源光网络)作 为未来大宽带光纤接入(FTTx, Fiber To The Building/Cabinet/Curb/Home, 光 纤到大楼、 路边机拒、 家庭等多种形式的接入)的解决方案。 一方面, 对城域 网络的带宽提出了更高的要求, 另一方面, 要求城域网络具备和 GPON对接的 能力, 支持未来 FTTx的发展。
目前的城 i或网络, 有 NG-SDH ( Next Generation Synchronous Digital
Hierarchy, 下一代同步数字系统)、 Metro-WDM ( Metro Wavelength Division Multiplexing, 城域波分复用)、 二层以太网等多种形式。 多种传送方式并存, 承载技术种类多, 业务透明性差; 无实时动态控制协议, 维护管理困难; 没有 实时的动态带宽调整机制, 网络带宽利用率低, 没有严格的 QoS保证, 大带宽 的 BOD ( Bandwidth On Demand, 按需带宽)业务难以满足。
为此, 本发明申请人在已经提交的专利申请中提出了一种多业务传送网 络架构。 如图 1所示, 是该网络典型的应用场景。 其中, 环上的节点分为 N节 点 (也称为传送网普通节点)和 S节点 (也称为传送网主节点) 两种, N节点 是普通的分散型业务接入节点, 如图中的 Nl、 N2、 N3、 N4、 N5 , 其中, 网络 节点 Nl、 N5通过光纤与 LAN ( Local Area Network, 局域网 )相连, 网络节点 N2、 N3、 N4是 TDM ( Time Division Multiplex, 时分复用) /ATM ( Asynchronous Transfer Mode, 异步传输模式) /ETH ( Ethernet, 以太网)业务的接入节点。 S 节点除了具备 N节点的功能外, 还是和上层网络对接的节点, 如图中的 Sl、 S2 与 BRAS ( Broadband Remote Access Server, 宽带远程接入服务器)相连。 任 何一个节点都可以上下传统的 TDM业务、以太网数据业务等,还可以提供 PON ( Passive Optical Network, 无源光网络)支路接口, 在 S节点还提供 10GE等上 行业务接口。 该网络架构的 S节点除了作为业务的汇聚节点之外, 也是网络的 集中控制管理中心。 S节点实现对 N节点的集中配置、 管理以及维护。 N节点也 需要将告警、 性能等系统事件统一上报给 S节点。
PON作为一种宽带光接入技术, 其特点是点到多点的物理拓朴结构, 由 OLT ( Optical Line Terminal,光线路终端)、 ODN ( Optical Distribution Network, 无源光分配网络 )和多个 ONU ( Optical Network Unit, 光网络单元 )组成。
随着宽带业务的增长, PON技术也在不断演进。 在 GPON ( Gigabit-PON, 吉比特无源光网络) 系统中, ONU可以通过 PLOAM ( Physical Layer OAM , 物理层 ΟΑΜ )、 OMCI ( ΟΝΤ Management and Control Interface , 光网络终端管 理控制接口 ) 艮文、 嵌入式 0 AM ( Operation、 Administration、 Maintenance, 操作、 管理和维护)报文和 OLT通信, 通过 OLT对 ONU进行管理, 实现了 ONU 注册、 测距、 告警、 管理性能监控等诸多重要功能。 但是每个 OLT只能管理与 自己直接相连的 ONU, 无法管理其他 OLT下的 ONU。 由于 OLT的数量众多, 因 而无法实现远程集中管理, 给管理维护带来困难, 增加了管理维护成本。
发明内容
本发明实施例提供一种多业务传送网中管理 GPON支路的方法、 设备及 系统, 在多业务传送网络中实现对 GPON支路中的 ONU的远程集中管理。
本发明实施例提供的一种多业务传送网中管理 GPON支路的方法, 包括: 传送网节点收到 GPON支路上行 OAM报文后,将需要传送网主节点处理 的上行 OAM报文转换为上行传送网控制管理报文, 发送给传送网主节点; 传送网节点收到传送网主节点发送的下行传送网控制管理报文后,将对光 网络单元进行配置或查询的下行传送网控制管理报文转换为 GPON支路下行 OAM报文, 发送给光网络单元。
本发明实施例提供的一种多业务传送网节点, 包括:
GPON支路接口单元, 用于发送和接收与光网络单元之间的上行 OAM报 文和下行 OAM ^艮文;
传送网接口单元,用于发送和接收与传送网主节点之间的上行传送网控制 管理 ·^艮文和下行传送网控制管理 ·^艮文;
转换单元, 分别与所述 GPON支路接口单元和所述传送网接口单元相连, 用于将需要传送网主节点处理的上行 OAM报文转换为上行传送网控制管理报 文格式,并将对光网络单元进行配置或查询的下行传送网控制管理报文转换为 GPON支路的下行 OAM报文。
本发明实施例提供的一种多业务传送网中管理 GPON支路的系统, 包括: 传送网节点、 传送网主节点,
所述传送网节点,用于接收 GPON支路上行 OAM报文,将需要传送网主 节点处理的上行 OAM报文转换为上行传送网控制管理报文,发送给所述传送 网主节点;
所述传送网主节点, 用于接收上行传送网控制管理报文,发送下行传送网 管理报文,根据收到的上行传送网控制管理报文和发送的下行传送网控制管理 报文, 对光网络单元进行管理;
所述传送网节点,还用于接收传送网主节点发送的对光网络单元进行配置 或查询的下行传送网控制管理报文转换为 GPON支路下行 OAM报文,发送给 光网络单元。
本发明实施例提供的多业务传送网中管理 GPON支路的方法、 设备及系 统,传送网节点收到 GPON支路上行 OAM报文后,将其转换为上文传送网控 制管理报文, 发送给传送网主节点, 使传送网主节点可以处理相应的 OAM信 息; 传送网节点收到传送网主节点发送的下行传送网控制管理报文后, 将对光 网络单元进行配置或查询的下行传送网控制管理报文转换为 GPON支路的下 行 OAM报文, 发送给光线路终端。 可见, 通过将传送网节点作为连接 GPON 支路的管理代理, 实现了传送网主节点对 GPON 支路的统一管理, 降低了 GPON支路中 ONU管理的复杂度, 从而可以降低维护管理费用。 附图说明
图 1是多业务传送网络的应用场景示意图;
图 2是本发明实施例中多业务传送网的网络架构示意图;
图 3是本发明实施例中对 GPON支路上行 OAM报文的处理流程图; 图 4是本发明实施例中对下行传送网控制管理报文的处理流程图; 图 5是本发明实施例多业务传送网节点的一种结构示意图;
图 6是本发明实施例多业务传送网节点的另一种结构示意图;
图 7是本发明实施例多业务传送网中管理 GPON支路的系统的组网示意 图。
具体实施方式
为了使本技术领域的人员更好地理解本发明实施例的方案,下面结合附图 和实施方式对本发明实施例作进一步的详细说明。
本发明实施例多业务传送网中管理 GPON支路的方法, 基于多业务传送 网的网络架构, 实现对 GPON支路中的 ONU的远程集中管理。 下面首先对多 业务传送网的网络架构进行筒单说明。
如图 2所示, 是所述多业务传送网的网络架构示意图:
该网络层次包含有业务适配层、 通道层和物理层三层结构。 其中, 业务适 配层负责对各种业务进行统一形式的封装和解封装,将各种业务统一封装为扩 展的 GEM ( E-GEM ) 帧, 并要求在网络中指定每一条业务唯一的标识。 根据 业务类型、 优先级和目的地址等, 将多个 E-GEM帧组成不同类型的传送容器 ( T-CONT ) 帧, 加上通道开销构成通道层。 所有的 T-CONT帧组成传输汇聚 层 (TC ) 帧, 再加上物理层开销, 包括帧头同步、 管理开销和带宽地图等字 段, 以方便网络中主机对各节点的通信和管理, 方便调整各 T-CONT帧的分配 时隙, 实现动态带宽调整。
该网络承载的业务类型可以包括三种: (1 ) 固定带宽业务, 称之为 FB
( Fixed Bandwidth )类业务, 主要用于承载带宽延时保证的业务, 如 TDM、 SDH ( Synchronous Digital Hierarchy, 同步数字系统) /SONET ( Synchronous Optical Network, 同步光纤网络)、 专线业务等; (2 ) 带宽保证业务, 称之为 AB ( Assured Bandwidth )类业务, 如视频、 VoIP、 专线等; (3 )尽力保证业 务, 称之为 BE ( Best Effort )类业务, 如普通上网业务等。 对于 AB类和 BE类 业务, 该网络是一种汇聚型网络, 汇聚节点为 S节点, 该节点实现双备份。 对 于 FB类业务, 该网络是一种对等交换网络, 可以从任何一个节点上下 TDM、 SDH/SONET, 专线等业务。
对于 GPON支路, 业务在 ONU接入, 经过 ODN到达 PON TC (无源光网络 传输汇聚层)模块后, GPON信号从 GTC( GPON传输汇聚层)解封装到 T-CONT 层, 并进一步解封装到 GEM ( GPON封装模式) 帧。 GEM帧被看作是业务适 配层的客户信号, 直接经过业务适配层封装到 E-GEM中。 这条业务映射路径 可以支持现有的 GPON系统的 ODN网络和 ONU设备,为新的网络结构支持未来 的 FTTx发展、 支持 GPON对接提供了保证。
考虑到 GPON支路的特点,部分 OAM消息可以不需要传送网主节点的参 与, 比如测距、 功率调整等 OAM消息, 只在 ONU和传送网节点之间交互; 有些 OAM消息需要和传送网主节点交互, 以实现对 GPON支路中的 ONU的 远程集中管理, 比如 ONU的告警上报、 网管对 ONU的实时告警性能的查询、 ONU软件的升级等 OAM消息。对不需要传送网主节点处理的 OAM消息,直 接在 GPON支路终结; 对于其他的 OAM消息, 需要在传送网节点进行转换, 实现 ONU和传送网主节点的交互。
在本发明实施例中, 将传送网节点作为相连 GPON支路的管理代理, 其收 到 GPON支路上行 0 AM报文后,将其转换为上行传送网控制管理报文,发送给 传送网主节点; 收到传送网主节点发送的下行传送网控制管理报文后, 将对光 网络单元进行配置或查询的下行传送网控制管理报文转换为 GPON支路下行 OAM报文,发送给光线路终端,从而实现传送网主节点对 GPON支路的统一管 理。 要包括以下步骤:
步骤 301 , 传送网节点收到光网络单元发送的上行 0 AM报文; 如果是, 则执行步骤 304; 否则, 执行步骤 303;
步骤 303 , 判断所述上行 0 AM报文是否为 PLO AM (物理层 OAM )报文并 且需要传送网主节点处理; 如果是, 则执行步骤 304; 否则, 执行步骤 307; 步骤 304,传送网节点将所述上行 OAM报文转换为上行传送网控制管理报 文;
步骤 305 , 传送网节点将所述上行传送网控制管理报文发送给传送网主节 点;
步骤 306 , 传送网主节点处理所述上行传送网控制管理 4艮文中的 OAM信 息;
步骤 307, 传送网节点直接处理所述上行 OAM^艮文。
GPON在物理层定义了 PLOAM, 高层定义了 OMCI, 在多个层面进行 OAM管理。 PLO AM用于实现数据加密、 状态检测、 误码监视等功能, OMCI 信道协议用来管理高层定义的业务, 包括 ONU的功能参数集、 T-CONT业务 种类与数量、 QoS ( Quality of Service, 服务质量)参数, 请求配置信息和性能 统计, 自动通知系统的运行事件, 实现 OLT对 ONU的配置、 故障诊断、 性能 和安全的管理。
在本发明实施例中,传送网节点对收到的 GPON支路上行 OAM报文进行 检测, 如果是 OMCI报文或嵌入式 OAM报文(即通过 GTC帧头中域格式信 息来提供), 则确定需要将其发送给传送网主节点; 如果是 PLOAM报文, 则 还需要根据配置信息来确定是否需要将其发送给传送网主节点。 比如,对于物 理设备错误报文, 则配置为需要传送网主节点处理, 根据该配置信息, 传送网 节点确定需要将其发送给传送网主节点; 对于确认报文, 则配置为不需要传送 网主节点处理, 根据该配置信息, 传送网节点直接处理该报文。
在上述步骤 304中,传送网节点需要将所述上行 OAM报文转换为上行传 送网控制管理报文,对此,可以根据 GPON支路上行 OAM报文格式和上行传 送网控制管理报文格式的映射关系,将需要传送网主节点处理的上行 OAM报 文转换为上行传送网控制管理报文格式。 当然, 本发明实施例中并不仅限于这 种方式, 比如, 还可以建立一定的转换规则, 将所述上行 OAM报文转换为上 行传送网控制管理报文。
对于 GPON支路上行 OAM报文,现有协议中已有详细描述,在此不再赘 述。 对于传送网控制管理报文,本发明申请人在已经提交的专利申请中也提供 了一种基于多业务传送网的上层业务管理控制方法,公开了两种传送网控制管 理艮文, 即 GMCI ( GEM based Transport Network Management and Control Interface, 基于 GEM的传送网管理控制接口 )报文或 ECC ( Embedded Control Channel, 嵌入控制通道) 4艮文。 具体地, 上行传送网控制管理 ·^艮文和下行传 送网控制管理报文可以采用相同的结构形式。
其中, GMCI报文的数据区定义和现有协议的 OMCI的数据区一致, 外层 通过 E-GEM封装, 适配进多业务传送网的 T-CONT帧后通过 TC帧在多业务 传送网中传送。 ECC 4艮文外层通过 E-GEM 封装, 适配进多业务传送网的 T-CONT帧后通过 TC帧在多业务传送网中传送。
参照图 4, 是本发明实施例中对下行传送网控制管理报文的处理流程, 主 要包括以下步骤:
步骤 401 ,传送网节点接收传送网主节点发送的下行传送网控制管理报文; 步骤 402, 传送网节点检查收到的下行传送网控制管理报文是否为配置或 查询 ONU的传送网控制管理报文; 如果是, 则执行步骤 404; 否则, 执行步 骤 403;
比如,传送网节点根据下行传送网控制管理报文的标识来判断, 所述标识 可以是下行传送网控制管理报文中的特定字段,用来区别不同的下行传送网控 制管理报文; 例如可以将 256 以上的标识作为配置或查询传送网控制管理报 文;
步骤 403 , 传送网节点处理所述下行传送网控制管理 4艮文;
步骤 404,传送网节点将所述下行传送网控制管理报文转换为 GPON支路 下行 ΟΑΜ报文;
步骤 405 , 将所述下行 ΟΑΜ报文发送给 ONU。
在上述步骤 404中,传送网节点需要将所述下行传送网控制管理报文转换 为 GPON支路下行 OAM报文,对此,可以根据 GPON支路下行 OAM报文格 式和下行传送网控制管理报文格式的映射关系,将所述下行传送网控制管理报 文转换为 GPON支路下行 OAM报文。 当然,本发明实施例中并不仅限于这种 方式, 比如, 还可以建立一定的转换规则, 将所述下行传送网控制管理报文转 换为对应的 GPON支路下行 OAM报文。
可见, 本发明实施例多业务传送网中管理 GPON支路的方法, 对不需要 传送网主节点处理的 GPON支路上行 OAM报文, 直接在 GPON支路终结, 对于其他需要主节点处理的 GPON支路上行 OAM报文,在传送网节点进行转 换, 并发送给主节点处理, 从而实现传送网主节点对 GPON支路的统一管理。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤 是可以通过程序来指令相关的硬件来完成,所述的程序可以存储于一计算机可 读取存储介质中, 所述的存储介质, 如: ROM/RAM、 磁碟、 光盘等。
本发明实施例还提供了一种多业务传送网节点, 如图 5所示,是该多业务 传送网节点的一种结构示意图:
该多业务传送网节点包括: 依次相连的 GPON支路接口单元 501、转换单 元 502和传送网接口单元 503。 其中:
GPON支路接口单元 501是传送网节点与光网络单元的接口,用于发送和 接收与光网络单元之间的上行 OAM报文和下行 OAM报文, 可以是 OMCI接 口、 或者嵌入式 OAM接口;
传送网接口单元 503是传送网节点与传送网主节点的接口,用于发送和接 收与传送网主节点之间的上行传送网控制管理报文和下行传送网控制管理报 文, 可以是 GMCI接口、 或 ECC接口;
转换单元 502用于将需要传送网主节点处理的上行 OAM ^艮文转换为上行 传送网控制管理报文格式,并将对光网络单元进行配置或查询的下行传送网控 制管理报文转换为 GPON支路下行 OAM报文。
在该实施例的多业务传送网节点中, 还可进一步包括: 映射单元 504, 用 于存储 GPON支路上行 OAM报文格式和上行传送网控制管理报文格式的映射 关系,以及 GPON支路下行 OAM报文格式和下行传送网控制管理报文格式的 映射关系。
这样, 转换单元 502就可以根据所述映射关系将接收的 GPON支路上行 OAM ·^艮文转换为上行传送网控制管理 ·^艮文; 将对光网络单元进行配置或查询 的下行传送网控制管理报文转换为 GPON支路下行 OAM报文。 当然,本发明 实施例中并不仅限于这种方式, 比如, 还可以建立一定的转换规则, 转换单 元 502依照该规则进行两种不同报文的转换。
当然, 本发明实施例多业务传送网节点并不仅限于上述这种结构, 比如, 还可以将 GPON支路 OAM报文和传送网控制管理报文的映射关系保存在一个 独立的服务器上。
本发明实施例多业务传送网节点,可以作为与多业务传送网相连的 GPON 支路的管理代理, 实现传送网主节点对 GPON支路的统一管理。
如图 6所示, 是该多业务传送网节点的另一种结构示意图:
与图 5所示实施例不同的是, 在该实施例中, 还包括第一判断单元 505、 和处理单元 506。 其中, 处理单元 506用于处理不需要传送网主节点处理的上 行 OAM ^艮文, 比如测距处理、 告警处理等, 其具体处理方式与现有技术中 OLT对 OAM报文的处理方式相同, 需要根据 OAM报文的内容来确定; 第一 判断单元 505用于判断 GPON支路接口单元 501收到的上行 OAM报文是否需 要传送网主节点处理, 如果需要, 则将所述上行 OAM报文传送给转换单元 502; 如果不需要, 则将所述上行 OAM报文传送给处理单元 506。
进一步地, 所述处理单元 506还用于处理下行传送网控制管理 4艮文, 具体 处理需要根据所述下行传送网控制管理报文转换后的下行 OAM报文的内容来 确定, 本发明实施例对此不做限定; 所述多业务传送网节点还包括: 第二判断 单元 507, 用于判断传送网接口单元 503收到的下行传送网控制管理报文是否 为对光网络单元进行配置或查询的下行传送网控制管理报文,如果是, 则将所 述下行传送网控制管理报文传送给转换单元 502, 否则将所述下行传送网控制 管理报文传送给处理单元 506。
当然, 本发明实施例的多业务传送网节点并不仅限于这种结构, 比如, 可 以将第一判断单元 505和第二判断单元 507集成在一个模块中,也可以将处理 单元 506 拆分成两个独立的模块, 分别处理不需要传送网主节点处理的上行 OAM报文和不需要发送给光网络单元的下行传送网控制管理报文。
在该实施例中, GPON支路接口单元 501可以是 OMCI接口、或者嵌入式 OAM接口; 传送网接口单元 503可以是 GMCI接口、 或 ECC接口。
本发明实施例多业务传送网节点,可以作为与多业务传送网相连的 GPON 支路的管理代理, 实现传送网主节点对 GPON支路的统一管理, 并且可以支 持多种协议格式的 OAM 4艮文。
本发明实施例还提供了一种多业务传送网中管理 GPON支路的系统, 如 图 7所示, 是该系统的结构示意图:
该系统包括: 传送网节点 701和传送网主节点 702。 其中:
传送网节点 701 , 用于接收 GPON支路上行 OAM报文, 将需要传送网主 节点处理的上行 OAM报文转换为上行传送网控制管理报文,发送给所述传送 网主节点;
传送网主节点 702, 用于接收上行传送网控制管理报文, 发送下行传送网 管理报文,根据收到的上行传送网控制管理报文和发送的下行传送网控制管理 报文, 对光网络单元进行管理;
传送网节点 701 , 还用于将接收的传送网主节点 702发送的对光网络单元 进行配置或查询的下行传送网控制管理报文转换为 GPON支路下行 OAM报 文, 发送给光网络单元;
所述传送网节点 701的结构可参照图 5和图 6, 在此不再详细描述。
在实际应用中, 可以有多个传送网节点, 分别与不同的光网络单元相连, 出了一个传送网节点 701。
本发明实施例的系统中, 传送网节点将 GPON支路中需要传送网主节点 处理的上行 OAM报文转发给传送网主节点,将不需要传送网主节点处理的上 行 OAM报文直接在传送网节点终结,实现了传送网主节点对 GPON支路的统 一管理, 而且提高了管理效率。
以上对本发明实施例进行了详细介绍,本文中应用了具体实施方式对本发 明进行了阐述, 以上实施例的说明只是用于帮助理解本发明的方法及设备; 同 时, 对于本领域的一般技术人员, 依据本发明的思想, 在具体实施方式及应用 范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。

Claims

权 利 要 求
1、 一种多业务传送网中管理 GPON支路的方法, 其特征在于, 包括: 传送网节点收到 GPON支路上行 OAM报文后,将需要传送网主节点处理 的上行 OAM报文转换为上行传送网控制管理报文, 发送给传送网主节点; 传送网节点收到传送网主节点发送的下行传送网控制管理报文后,将对光 网络单元进行配置或查询的下行传送网控制管理报文转换为 GPON支路下行 OAM报文, 发送给光网络单元。
2、 根据权利要求 1所述的方法, 其特征在于, 所述方法还包括: 传送网节点收到 GPON支路上行 OAM报文后, 判断收到的 GPON支路 上行 OAM报文是否需要传送网主节点处理。
3、根据权利要求 2所述的方法,其特征在于,所述 GPON支路上行 OAM 报文包括: 光网络终端管理控制接口 OMCI报文、嵌入式 OAM报文和物理层 OAM报文;
所述判断收到的 GPON支路上行 OAM报文是否需要传送网主节点处理步 骤包括:
对于 OMCI报文和嵌入式 OAM报文, 全部需要传送网主节点处理; 对于物理层 OAM报文, 根据配置信息确定是否需要传送网主节点处理。
4、 根据权利要求 1所述的方法, 其特征在于, 所述上行传送网控制管理 报文包括: 基于 GEM的上行传送网管理控制接口报文和上行嵌入控制通道报 文; 所述下行传送网控制管理报文包括: 基于 GEM的下行传送网管理控制接 口报文和下行嵌入控制通道报文。
5、 根据权利要求 1所述的方法, 其特征在于:
所述将需要传送网主节点处理的上行 OAM报文转换为上行传送网控制管 理报文格式具体为:根据 GPON支路上行 OAM报文格式和上行传送网控制管 理报文格式的映射关系,将需要传送网主节点处理的上行 OAM报文转换为上 行传送网控制管理报文格式;
所述将对光网络单元进行配置或查询的下行传送网控制管理报文转换为 GPON支路下行 OAM报文具体为:根据 GPON支路下行 OAM报文格式和下 行传送网控制管理报文格式的映射关系,对光网络单元进行配置或查询的传送 网控制管理报文转换为 GPON支路下行 OAM报文。
6、 一种多业务传送网节点, 其特征在于, 包括:
GPON支路接口单元, 用于发送和接收与光网络单元之间的上行 OAM报 文和下行 OAM ^艮文;
传送网接口单元,用于发送和接收与传送网主节点之间的上行传送网控制 管理 ·^艮文和下行传送网控制管理 ·^艮文;
转换单元, 分别与所述 GPON支路接口单元和所述传送网接口单元相连, 用于将需要传送网主节点处理的上行 OAM报文转换为上行传送网控制管理报 文格式,并将对光网络单元进行配置或查询的下行传送网控制管理报文转换为 GPON支路的下行 OAM报文。
7、 根据权利要求 6所述的多业务传送网节点, 其特征在于, 还包括: 处理单元, 用于处理不需要传送网主节点处理的上行 OAM ·^艮文; 第一判断单元,用于判断所述 GPON支路接口单元收到的上行 OAM报文 是否需要传送网主节点处理, 如果是, 则将所述上行 OAM报文传送给所述转
8、 根据权利要求 7所述的多业务传送网节点, 其特征在于, 所述处理单 元还用于处理下行传送网控制管理报文; 所述多业务传送网节点还包括:
第二判断单元,用于判断所述传送网接口单元收到的下行传送网控制管理 报文是否为对光网络单元进行配置或查询的下行传送网控制管理报文, 如果 是, 则将所述下行传送网控制管理报文传送给所述转换单元, 否则将所述下行 传送网控制管理报文传送给所述处理单元。
9、 根据权利要求 6至 8任一项所述的多业务传送网节点, 其特征在于, 还包括:
映射单元,用于存储 GPON支路上行 OAM报文格式和上行传送网控制管 理报文格式的映射关系,以及 GPON支路下行 OAM报文格式和下行传送网控 制管理报文格式的映射关系;
所述转换单元根据所述映射关系将需要传送网主节点处理的上行 OAM报 文转换为上行传送网控制管理 ·^艮文,并将对光网络单元进行配置或查询的下行 传送网控制管理报文转换为 GPON支路下行 OAM报文。
10、 一种多业务传送网中管理 GPON支路的系统, 包括: 传送网节点、 传送网主节点, 其特征在于:
所述传送网节点,用于接收 GPON支路上行 OAM报文,将需要传送网主 节点处理的上行 OAM报文转换为上行传送网控制管理报文,发送给所述传送 网主节点;
所述传送网主节点, 用于接收上行传送网控制管理报文,发送下行传送网 管理报文,根据收到的上行传送网控制管理报文和发送的下行传送网控制管理 报文, 对光网络单元进行管理;
所述传送网节点,还用于接收传送网主节点发送的对光网络单元进行配置 或查询的下行传送网控制管理报文转换为 GPON支路下行 OAM报文,发送给 光网络单元。
11、 根据权利要求 10所述的系统, 其特征在于, 所述多业务传送网节点 为如权利要求 6至 9任一项所述的传送网节点。
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