WO2009009994A1 - A method, device and system for locating the fault of passive optical network - Google Patents

A method, device and system for locating the fault of passive optical network Download PDF

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Publication number
WO2009009994A1
WO2009009994A1 PCT/CN2008/071603 CN2008071603W WO2009009994A1 WO 2009009994 A1 WO2009009994 A1 WO 2009009994A1 CN 2008071603 W CN2008071603 W CN 2008071603W WO 2009009994 A1 WO2009009994 A1 WO 2009009994A1
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WIPO (PCT)
Prior art keywords
access terminal
power
network
offline
message
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PCT/CN2008/071603
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French (fr)
Chinese (zh)
Inventor
Cheng Luo
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Huawei Technologies Co., Ltd.
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Priority to CN200710075888.5 priority Critical
Priority to CN2007100758885A priority patent/CN101345581B/en
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009009994A1 publication Critical patent/WO2009009994A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/14Monitoring arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/16Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1694Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers

Abstract

A method for locating the fault of passive optical network is provided in the embodiment of the present invention belonging to the network communication field, the method comprises the following steps: detecting the message of the device being power off, the message being reported by the access terminal device having been off line; judging whether the fault taken place at the said access terminal device having been off line or at the main line connecting with the said access terminal device having been off line according to the said detected result and the on-line state of the other access terminal devices under the same one central access device port as the said access terminal device having been off line. A device and system for locating the fault of passive optical network are also provided by the present invention embodiment. The present invention embodiment is used to judge the fault of the PON network.

Description

无源光网络故障定位的方法、 设备和系统  Method, device and system for fault location of passive optical network
技术领域 Technical field
本发明实施例属于网络通信领域, 尤其涉及一种无源光网络故障定位的 方法、 设备和系统。  The embodiments of the present invention belong to the field of network communications, and in particular, to a method, device, and system for fault location of a passive optical network.
背景技术 Background technique
无源光网络( Passive Optical Network , PON )技术是一种点到多点的光 纤接入技术。 PON—般由局侧的光线路终端(Optical Line Terminal, OLT ) 、 用户侧的光网络单元 /光网络终端 ( Optical Network Unit/ Optical Network Terminal, ONU/ONT )、以及光分配网络( Optical Distribution Network, ODN ) 组成。 OLT的一个 PON端口可以接入多个 ONU/ONT , ONU/ONT的区别为 ONT直接位于用户端, 而 ONU和用户间更有其他的网络如以太网, 如无特 别说明, 在下文中简称为 ONT。 ONT可以通过双绞线接口或无线接口连接各 种用户终端设备 ( Customer Premise Equipment, CPE ) 。  Passive Optical Network (PON) technology is a point-to-multipoint optical fiber access technology. The PON is generally an optical line terminal (OLT) on the central side, an optical network unit/optical network terminal (ONU/ONT) on the user side, and an optical distribution network (Optical Distribution Network). , ODN ) composition. One PON port of the OLT can access multiple ONUs/ONTs. The difference between ONUs and ONTs is that the ONTs are directly located at the user end, and there are other networks such as Ethernet between the ONU and the users. Unless otherwise specified, hereinafter referred to as ONT. . The ONT can be connected to various Customer Premise Equipment (CPE) through a twisted pair interface or a wireless interface.
图 1示出了无源光网络的典型配置, 其中 OLT是无源光网络的中心接入 设备, 为光接入网提供网络侧与业务节点之间的接口, 并经一个或多个 ODN 与用户侧的 ONT设备(即接入终端设备)通信; ODN为 OLT与 ONT之间 提供光传输手段, 完成光信号的功率分配; ONT为光接入网提供直接或者远 端的用户侧接口, 终结来自 ODN的光信号, 处理光信号并为用户提供业务接 口; 为了实现网元管理, 提供网元管理系统( Element Management System , EMS ) , 对 PON网络中的各个组成单元进行统一管理, 主要管理 PON网络 中的故障、 计费、 性能和安全等。  Figure 1 shows a typical configuration of a passive optical network, where the OLT is a central access device of a passive optical network, providing an interface between the network side and the service node for the optical access network, and via one or more ODNs The user-side ONT device (ie, the access terminal device) communicates; the ODN provides an optical transmission means between the OLT and the ONT to complete the power distribution of the optical signal; the ONT provides a direct or remote user-side interface for the optical access network, terminating An optical signal from the ODN, which processes the optical signal and provides a service interface for the user. To implement network element management, an Element Management System (EMS) is provided to uniformly manage each component unit in the PON network, and mainly manages the PON. Faults, billing, performance and security in the network.
通常约定从 OLT到 ONT的光信号传送方向为下行方向, 在下行方向上, OLT将来自 IP网络、 时分复用网络(Time Division Multiplexing, TDM )或 者视频网络的数据, 经过 ODN的光纤传送给各个 ONT , 再由 ONT通过双绞 线等发送给各个用户终端设备 CEP; 将从 ONT到 OLT的光信号传送方向为 上行方向, 在上行方向上, ONT将来自各个用户终端设备 CPE的业务数据流 或者 TDM业务流经过 ODN的光纤发送至 OLT, 并经过 OLT汇聚发送至 IP 网络或者 TDM网络 Generally, the optical signal transmission direction from the OLT to the ONT is in the downlink direction. In the downlink direction, the OLT transmits data from the IP network, Time Division Multiplexing (TDM), or video network to the ONT through the optical fiber of the ODN. And then sent by the ONT to each user terminal device CEP through a twisted pair or the like; the optical signal transmission direction from the ONT to the OLT is In the uplink direction, in the uplink direction, the ONT sends the service data stream or the TDM service stream from each user terminal equipment CPE to the OLT through the optical fiber of the ODN, and sends it to the IP network or the TDM network through the OLT.
由上所述, PON网络技术是一种点对多点的光纤传输接入技术, 即一个 OLT的一个端口可以同时接入多个 ONT设备, 由于同一个 OLT端口下的其 中一个 ONT设备发生故障时, 可能会影响该 OLT端口下其余 ONT设备的正 常业务, 同时在 PON网络的这种点到多点的远距离全业务接入网络中, 网络 故障可能发生在连接 ONT设备与 OLT设备的光纤传输线路(以后都称为主 干线路 )或者 ONT设备等不同的地方, 因此如何快速准确地定位 PON网络 的故障点是 PON网络维护的一个难题。  As described above, the PON network technology is a point-to-multipoint optical fiber transmission access technology, that is, one port of an OLT can simultaneously access multiple ONT devices, because one of the ONT devices under the same OLT port fails. The normal service of the remaining ONT devices under the OLT port may be affected. In the point-to-multipoint long-distance full-service access network of the PON network, the network fault may occur in the optical fiber connecting the ONT device and the OLT device. Transmission lines (hereinafter referred to as backbone lines) or ONT equipment and other different places, so how to quickly and accurately locate the fault point of the PON network is a difficult problem for PON network maintenance.
现有技术釆用排查诊断的方法定位 PON网络的故障, 即通过 OLT设备 发送诊断管理指令, 对 PON网络中的主干线路或者 ONT设备进行故障诊断, 从而定位 PON的故障。  In the prior art, the fault diagnosis method is used to locate the fault of the PON network, that is, the OLT device sends a diagnostic management command to perform fault diagnosis on the trunk line or the ONT device in the PON network, thereby locating the PON fault.
在实现本发明的过程中, 发明人发现, 现有技术中至少存在以下技术问 题:  In the process of implementing the present invention, the inventors have found that at least the following technical problems exist in the prior art:
釆用这种故障定位方法无法在不影响其余 ONT设备的同时对单个发生故 障的 ONT设备进行诊断, OLT设备无法知晓发生故障的 ONT设备的具体位 置, 从而难以快速准确地定位无源光网络地故障。  这种This fault location method cannot diagnose a single faulty ONT device without affecting the remaining ONT devices. The OLT device cannot know the specific location of the faulty ONT device, and thus it is difficult to quickly and accurately locate the passive optical network. malfunction.
发明内容 Summary of the invention
本发明实施例的目的在于提供一种无源光网络的故障定位方法, 旨在解 决现有技术中存在的难以快速准确地定位无源光网络的故障的问题。  An object of the present invention is to provide a fault location method for a passive optical network, which aims to solve the problem in the prior art that it is difficult to quickly and accurately locate a fault of a passive optical network.
本发明实施例是这样实现的, 一种无源光网络的故障定位方法, 所述方 法包括下述步骤:  The embodiment of the present invention is implemented by the method for fault location of a passive optical network, and the method includes the following steps:
检测离线接入终端设备上报的设备下电消息; 所述设备下电消息标志所 述接入终端设备离线是由掉电或者正常关闭电源引起而非所述接入终端设备 发生故障; 根据所述检测结果, 以及与所述离线接入终端设备在同一中心接入设备 端口下的其余接入终端设备的在线状态, 判断所述离线接入终端设备或者与 所述离线接入终端设备连接的主干线路是否发生故障。 Detecting a device power-off message reported by the offline access terminal device; the device power-off message indicating that the access terminal device is offline is caused by power failure or normal power-off, and the access terminal device fails; Determining, according to the detection result, an online status of the remaining access terminal devices under the same central access device port as the offline access terminal device, determining the offline access terminal device or the offline access terminal device Whether the connected trunk line has failed.
本发明实施例的另一目的在于提供一种无源光网络的中心接入设备, 所 述设备包括:  Another object of the embodiments of the present invention is to provide a central access device for a passive optical network, where the device includes:
设备下电消息检测网元, 用于检测离线接入终端设备上报的设备下电消 息, 所述设备下电消息标志所述接入终端设备离线是由掉电或者正常关闭电 源引起而非所述接入终端设备发生故障; 以及  The device power-off message detecting network element is configured to detect a device power-off message reported by the offline access terminal device, where the device power-off message indicates that the access terminal device is offline or caused by power-off or normal power-off instead of the The access terminal device has failed;
故障判断网元, 用于根据所述设备下电消息检测网元的检测结果, 以及 与所述离线接入终端设备在同一中心接入设备端口下的其余接入终端设备的 在线状态, 判断所述离线接入终端设备或者与所述离线接入终端设备连接的 主干线路是否发生故障。  a fault determining network element, configured to detect, according to the detection result of the device power-off message, and the online state of the remaining access terminal devices in the same center access device port as the offline access terminal device, Whether the offline access terminal device or the trunk line connected to the offline access terminal device fails.
本发明实施例的另一目的在于提供一种接入终端设备, 所述设备包括: 电源监控单元, 用于监控所述接入终端设备的电源, 当所述接入终端设 备掉电或正常关闭电源时, 产生设备下电消息, 所述设备下电消息标志所述 接入终端设备离线是由掉电或者正常关闭电源引起而非所述接入终端设备发 生故障;  Another object of the present invention is to provide an access terminal device, where the device includes: a power monitoring unit, configured to monitor power of the access terminal device, when the access terminal device is powered off or shut down normally The power-off message is generated, and the device power-off message indicates that the access terminal device is offline due to power failure or normal power-off, instead of the access terminal device being faulty;
设备下电消息上报单元, 用于将所述设备下电消息上报至无源光网络。 本发明实施例的另一目的在于提供一种无源光网络的故障定位系统, 所 述系统包括:  The device is powered off by the device, and is used to report the device to the passive optical network. Another object of the embodiments of the present invention is to provide a fault location system for a passive optical network, the system comprising:
接入终端设备, 所述接入终端设备在掉电或正常关闭电源时, 产生设备 下电消息, 并将所述设备下电消息上报, 所述设备下电消息标志所述接入终 端设备离线是由掉电或者正常关闭电源引起而非所述接入终端设备发生故 障; 以及  The access terminal device generates a device power-off message when the power is turned off or the power is normally turned off, and reports the device power-off message, and the device power-off message marks that the access terminal device is offline. Is caused by power failure or normal power off rather than failure of the access terminal device;
中心接入设备, 用于检测离线接入终端设备上报的设备下电消息, 并根 据所述检测结果, 以及与所述离线接入终端设备在同一中心接入设备端口下 的其余接入终端设备的在线状态, 判断所述离线接入终端设备或者与所述离 线接入终端设备连接的主干线路是否发生故障。 a central access device, configured to detect a device power-off message reported by the offline access terminal device, and according to the detection result, and the offline access terminal device is in the same center access device port The online status of the remaining access terminal devices determines whether the offline access terminal device or the trunk line connected to the offline access terminal device fails.
在本发明实施例中, 当接入终端设备掉电或者正常关闭电源时, 向中心 接入设备上报一设备下电消息, 中心接入设备根据是否检测到该设备下电消 息以及与该接入终端设备在同一中心接入设备端口下的其它接入终端设备是 否正常在线, 快速定位 PON网络的接入终端设备发生故障还是 PON网络的 主干线路发生故障, 增强了 PON网络的故障定位能力, 提高了 PON网络的 可维护性。  In the embodiment of the present invention, when the access terminal device is powered off or the power is normally turned off, a device power-off message is reported to the central access device, and the central access device detects the device power-off message and the access according to the device. Whether the other access terminal devices of the terminal device accessing the device port in the same center are online, whether the access terminal device of the PON network is faulty or the trunk line of the PON network is faulty, and the fault location capability of the PON network is enhanced. The maintainability of the PON network.
附图说明 DRAWINGS
图 1是现有技术提供的 PON网络的典型配置示意图;  1 is a schematic diagram of a typical configuration of a PON network provided by the prior art;
图 2是本发明实施例提供的 PON网络的故障定位方法的实现流程图; 图 3 是本发明实施例提供的定位 PON 网络故障的指示方法的实现流程 图;  2 is a flowchart of an implementation of a method for locating a fault of a PON network according to an embodiment of the present invention; FIG. 3 is a flowchart of an implementation method for indicating a fault of a PON network according to an embodiment of the present invention;
图 4是本发明实施例提供的 PON网络的故障定位方法的实现时序图; 图 5是本发明实施例提供的 PON网络的故障定位系统的结构图。  4 is a timing diagram of an implementation of a fault location method for a PON network according to an embodiment of the present invention. FIG. 5 is a structural diagram of a fault location system for a PON network according to an embodiment of the present invention.
具体实施方式 detailed description
为了使本发明实施例的目的、 技术方案及优点更加清楚明白, 以下结合 附图及实施例, 对本发明进行进一步详细说明。 应当理解, 此处所描述的具 体实施例仅仅用以解释本发明, 并不用于限定本发明。  The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
在本发明实施例中, 当接入终端设备掉电或者正常关闭电源后, 向 PON 网络的中心接入设备发送一设备下电消息, 该设备下电消息标志该接入终端 设备掉电或者正常关闭电源, 而非接入终端设备故障导致该接入终端设备突 然离线; PON网络的中心接入设备判断是否检测到该设备下电消息, 同时根 据与该接入终端设备在同一中心接入设备端口下的其它接入终端设备是否正 常在线来判断 PON网络中的故障发生在主干线路上还是接入终端设备中, 增 强了 PON网络的故障定位能力。 在本发明实施例提到的中心接入设备即为图 1所示的 PON网络中的 OLT (以下都称为 OLT设备),接入终端设备即为图 1所示的 PON网络中的 ONT 设备。 In the embodiment of the present invention, after the access terminal device is powered off or the power is normally turned off, a device power-off message is sent to the central access device of the PON network, and the device power-off message indicates that the access terminal device is powered off or normal. Turning off the power, the failure of the access terminal device causes the access terminal device to suddenly go offline; the central access device of the PON network determines whether the device is powered off, and accesses the device according to the same center as the access terminal device. Whether other access terminal devices under the port are normally online to determine whether the fault in the PON network occurs on the trunk line or the access terminal device, and the fault location capability of the PON network is enhanced. The central access device mentioned in the embodiment of the present invention is an OLT (hereinafter referred to as an OLT device) in the PON network shown in FIG. 1, and the access terminal device is an ONT device in the PON network shown in FIG. 1. .
图 2示出了本发明实施例提供的 PON网络的故障定位方法的实现流程, 详述如下:  FIG. 2 is a flowchart showing an implementation process of a fault location method for a PON network according to an embodiment of the present invention, which is described in detail as follows:
在步骤 S201中,接收 ONT设备的注册请求,并根据该注册请求完成 ONT 设备的注册。该注册请求中携带 ONT设备的注册信息, ONT设备的注册信息 包括 ONT设备的物理位置、 ONT设备的厂商信息、 ONT设备的序列号、 ONT 设备的电话号码、 ONT设备的版本信息等。  In step S201, a registration request of the ONT device is received, and registration of the ONT device is completed according to the registration request. The registration request carries the registration information of the ONT device. The registration information of the ONT device includes the physical location of the ONT device, the vendor information of the ONT device, the serial number of the ONT device, the phone number of the ONT device, and the version information of the ONT device.
在步骤 S202中, 将 ONT设备的注册信息上报至 EMS, 由于该 ONT设 备的注册信息中包括 ONT设备的物理位置、 ONT设备的厂商信息、 ONT设 备的序列号、 ONT设备的电话号码、 ONT设备的版本信息等, EMS根据该 ONT设备的注册信息可以对该 ONT设备进行智能管理。  In the step S202, the registration information of the ONT device is reported to the EMS, and the registration information of the ONT device includes the physical location of the ONT device, the vendor information of the ONT device, the serial number of the ONT device, the phone number of the ONT device, and the ONT device. The version information, etc., the EMS can intelligently manage the ONT device according to the registration information of the ONT device.
在步骤 S203中, 检测离线 ONT设备上报的设备下电消息。 该设备下电 消息标志该 ONT设备突然离线(即突然与 PON网络断开连接) 的原因是该 ONT设备掉电或者正常关闭电源引起的, 而非 ONT设备发生故障。  In step S203, the device power-off message reported by the offline ONT device is detected. The device power-off message indicates that the ONT device is suddenly offline (ie, suddenly disconnected from the PON network) because the ONT device is powered down or the power is turned off normally, and the non-ONT device fails.
在步骤 S204中, 根据步骤 S203的检测结果, 以及在 OLT设备上与该离 线 ONT设备在所述 OLT设备同一端口下的其余 ONT设备的在线状态, 判断 该离线 ONT设备或者与该离线 ONT设备连接的主干线路是否发生故障, 同 时得到 PON网络的故障信息。  In step S204, according to the detection result of step S203, and the online state of the remaining ONT devices on the OLT device and the offline ONT device under the same port of the OLT device, determine the offline ONT device or connect with the offline ONT device. Whether the trunk line fails or not, and obtains the fault information of the PON network.
当检测到该离线 ONT设备上报的设备下电消息时, 由于该设备下电消息 标志该离线 ONT设备是掉电或者正常关闭电源, 而非 ONT设备发生故障, 同时由于能够检测到该离线 ONT设备上报的设备下电消息, 即表示 PON网 络中有上行光信号, 因此, 可以判定 PON网络中连接 ONT设备与 OLT设备 的主干线路也没有发生故障;  When the device power-off message reported by the offline ONT device is detected, the offline ONT device is powered off or the power is normally turned off due to the device power-off message, and the non-ONT device fails, and the offline ONT device can be detected. The reported device power-off message indicates that there is an uplink optical signal in the PON network. Therefore, it can be determined that the trunk line connecting the ONT device and the OLT device in the PON network does not fail;
当未检测到该离线 ONT设备上报的设备下电消息时, 则可能因为该离线 ONT设备发生故障而突然离线, 因此, ONT设备不会产生设备下电消息, 也 可能因为 PON网络中连接 ONT设备与 OLT设备的主干线路发生故障, 从而 无法将该离线 ONT设备产生的设备下电消息上报, 此时检测与该离线 ONT 设备在 OLT设备同一端口的其它 ONT设备是否正常在线。 When the device power-off message reported by the offline ONT device is not detected, it may be because the offline The ONT device is faulty and suddenly goes offline. Therefore, the ONT device does not generate the device power-off message. It may also be unable to power off the device generated by the offline ONT device because the ONT device and the OLT device's trunk line are faulty. The message is reported. At this time, it is detected whether other ONT devices on the same port as the offline ONT device are online.
当与该离线 ONT设备在同一 OLT设备端口下的 ONT设备中存在在线的 ONT设备时, 则可以判定该离线 ONT设备发生故障;  When an online ONT device exists in the ONT device under the same OLT device port as the offline ONT device, it may be determined that the offline ONT device is faulty;
当与该离线 ONT设备在同一 OLT设备端口下的所有在线 ONT设备均离 线时, 则可以判定: 在 PON网络中, 连接该离线 ONT设备与 OLT设备的主 干线路发生故障。  When all the online ONT devices under the same OLT device port are offline from the offline ONT device, it can be determined that: In the PON network, the trunk line connecting the offline ONT device and the OLT device fails.
在步骤 S205中, 将 PON网络的故障信息上报至 EMS。 当 PON网络的 ONT设备发生故障时, EMS根据 ONT设备的注册信息中 ONT设备的物理地 址可以快速定位发生故障的 ONT设备的物理位置, 避免了该离线 ONT设备 发生故障后, 为准确确定发生故障的 ONT设备的物理位置, 需要对所有离线 的 ONT设备——进行排查, 延长故障定位时间, 因此, 釆用本发明实施例提 供的方案能够增强 PON网络的故障定位能力, 提高了 PON网络的可维护性。  In step S205, the fault information of the PON network is reported to the EMS. When the ONT device of the PON network fails, the EMS can quickly locate the physical location of the faulty ONT device according to the physical address of the ONT device in the registration information of the ONT device, and avoid the fault of the offline ONT device after the fault occurs. The physical location of the ONT device needs to be checked for all the offline ONT devices to prolong the fault locating time. Therefore, the solution provided by the embodiment of the present invention can enhance the fault location capability of the PON network and improve the PON network. Maintenance.
图 3示出了本发明实施例提供的定位 PON网络故障的指示方法的实现流 程, 详述如下:  FIG. 3 is a flowchart showing an implementation process of an indication method for locating a PON network fault according to an embodiment of the present invention, which is described in detail as follows:
在步骤 S301中, 向 PON网络侧发送注册请求, 携带 ONT设备的注册信 息, 以向 PON网络申请注册。 该注册信息如上所述, 在此不再赘述。  In step S301, a registration request is sent to the PON network side, and the registration information of the ONT device is carried to apply for registration with the PON network. The registration information is as described above, and details are not described herein again.
在步骤 S302中, 接收 PON网络侧发送的注册成功消息, 以标示该 ONT 设备注册成功。  In step S302, a registration success message sent by the PON network side is received to indicate that the ONT device is successfully registered.
在步骤 S303中, 监控 ONT设备的电源, 当 ONT设备的电源下降到一定 阀值时, 产生设备下电消息, 该设备下电消息标志该 ONT设备突然离线(即 该 ONT设备突然与 PON网络断开连接) 的原因是掉电或者正常关闭电源, 而非 ONT设备发生故障;  In step S303, the power of the ONT device is monitored. When the power of the ONT device drops to a certain threshold, a device power-off message is generated, and the device power-off message indicates that the ONT device is suddenly offline (ie, the ONT device suddenly disconnects from the PON network). The reason for opening the connection is to power down or to turn off the power normally, instead of the failure of the ONT device;
在步骤 S304中, 将产生的设备下电消息上报至 PON网络侧。 由于不同 的接入网络, 如 IP网络、 TDM网络等, 该设备下电消息需要按照该网络各自 的带内操作、 管理、 维护 ( Operation、 Administration、 Maintenance, OAM ) 协议定义与该网络相应的消息类型后, 才能上报至 PON网络侧。 对于不同的 接入网络, 定义消息类型的格式也不一定相同, 在本发明实施例中, 统一将 具有不同格式的标志 ONT设备是掉电或者正常关闭电源, 而非 ONT设备发 生故障的消息定义为上述设备下电消息。 In step S304, the generated device power-off message is reported to the PON network side. Due to difference Access network, such as IP network, TDM network, etc., the device power-off message needs to define the message type corresponding to the network according to the network's respective in-band operation, management, maintenance (OAM) protocol. , can be reported to the PON network side. For different access networks, the format of the defined message type is not necessarily the same. In the embodiment of the present invention, the flag ONT device with different formats is uniformly powered off or the power is normally turned off, instead of the message definition of the ONT device failure. Power off the message for the above device.
图 4示出了本发明实施例提供的 PON网络的故障定位方法的实现时序。 1、 ONT设备在连接网络过程中向 PON网络的 OLT设备发送注册请求, 该注册请求中携带 ONT设备的注册信息, 如 ONT设备的物理位置、 ONT设 备的厂商信息、 ONT设备的序列号、 ONT设备的电话号码、 ONT设备的版 本信息等。  FIG. 4 shows an implementation timing of a fault location method for a PON network according to an embodiment of the present invention. 1. The ONT device sends a registration request to the OLT device of the PON network during the connection process. The registration request carries the registration information of the ONT device, such as the physical location of the ONT device, the vendor information of the ONT device, the serial number of the ONT device, and the ONT. The phone number of the device, the version information of the ONT device, and so on.
2、 PON网络侧的 OLT设备响应 ONT设备的注册请求, 并向 ONT设备 返回注册成功消息。  2. The OLT device on the PON network side responds to the registration request of the ONT device, and returns a registration success message to the ONT device.
3、 PON网络侧 OLT设备将该 ONT设备注册成功的消息发送至 EMS, 该注册成功消息中携带 ONT设备的注册信息。 其中 OLT设备向 EMS发送注 册成功消息可以釆用发送确认机制, 即当 EMS接收到该注册成功消息时, 向 OLT设备返回一确认收到消息。  3. The PON network side sends the message that the ONT device is successfully registered to the EMS, and the registration success message carries the registration information of the ONT device. The sending of the registration success message to the EMS by the OLT device may use a sending confirmation mechanism, that is, when the EMS receives the registration success message, it returns an acknowledge receipt message to the OLT device.
4、 当 ONT设备掉电或者被正常关闭电源后, 产生一设备下电消息, 以 标志该 ONT设备突然离线(即突然与网络断开连接)是由掉电或者正常关闭 电源引起的, 而非 ONT设备发生故障。  4. When the ONT device is powered off or is powered off normally, a device power-off message is generated to indicate that the ONT device is suddenly offline (ie, suddenly disconnected from the network) caused by power failure or normal power off, instead of The ONT device has failed.
5、 PON网络侧的 OLT设备根据该离线 ONT设备上报的设备下电消息, 以及与该离线 ONT设备在同一 OLT设备端口下的其余 ONT设备的在线状态, 判断该离线 ONT设备或者与该离线 ONT设备连接的主干线路是否发生故障, 同时产生 PON网络的故障信息。 其判断过程同上, 在此不再赘述。  The OLT device on the PON network side determines the offline ONT device or the offline ONT according to the device power-off message reported by the offline ONT device and the online status of the remaining ONT devices under the same OLT device port of the offline ONT device. Whether the trunk line connected to the device fails, and the fault information of the PON network is generated at the same time. The judgment process is the same as above, and will not be described here.
6、 PON网络侧的 OLT设备将 PON网络的故障信息发送至 EMS。 同时 此处也可以釆用发送确认机制, 即 EMS在接收到该故障信息后, 向 PON网 络侧返回一确认收到消息。 由于 EMS中保存有 0NT设备的注册信息, 因此, 当 PON网络侧发送给 EMS的故障信息中标示该故障发生在 ONT设备时, 则 EMS可以根据 ONT设备的注册信息, 如 ONT设备的物理地址, 准确确定发 生故障的 ONT设备的物理位置, 增强了 PON网络的故障排查能力, 提高了 PON网络的可维护性。 6. The OLT device on the PON network side sends the fault information of the PON network to the EMS. At the same time, the sending confirmation mechanism can also be used, that is, after receiving the fault information, the EMS sends the PON network to the PON network. The network side returns a confirmation receipt message. The EMS can store the registration information of the ONT device. Accurately determine the physical location of the failed ONT device, enhance the fault detection capability of the PON network, and improve the maintainability of the PON network.
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, 是可以通过程序指令相关硬件完成的。 实施例对应的软件可以存储在一 个计算机可存储读取的介质中, 如 R0M/RAM、 磁碟、 光盘等。  One of ordinary skill in the art will appreciate that all or part of the steps in implementing the above-described embodiments can be accomplished by program-related hardware. The software corresponding to the embodiment can be stored in a computer readable storage medium such as ROM/RAM, disk, optical disk, and the like.
图 5示出了本发明实施例提供的 PON网络的故障定位系统的结构, 为了 便于说明, 仅示出了与本发明实施例相关的部分。  FIG. 5 shows the structure of a fault location system of a PON network according to an embodiment of the present invention. For convenience of description, only parts related to the embodiment of the present invention are shown.
内置于 ONT设备 51中的电源监控单元 511监控 ONT设备 51的电源, 当 ONT设备 51 的电源下降到一定阀值时, 产生设备下电消息, 所述设备下 电消息标志所述 ONT设备 51 离线是由掉电或者正常关闭电源引起而非所述 ONT设备 51发生故障。电源监控单元 511具体可以是由电源监控电路和电容 组组成,其中电源监控电路实时的监控 ONT设备 51的电源, 当 ONT设备 51 的电源由于掉电或者正常关闭电源等而下降到一定阀值时, 电容组开始放电, 产生设备下电消息, 同时向内置于 ONT设备 51 中的设备下电消息上 4艮单元 512触发硬件中断。 其中电容组由多个电容组成, 其具体容量根据 ONT设备 51的功耗确定。  The power monitoring unit 511 built in the ONT device 51 monitors the power of the ONT device 51. When the power of the ONT device 51 drops to a certain threshold, a device power-off message is generated, and the device power-off message indicates that the ONT device 51 is offline. It is caused by a power failure or a normal power off rather than the failure of the ONT device 51. The power monitoring unit 511 may be specifically composed of a power monitoring circuit and a capacitor group, wherein the power monitoring circuit monitors the power of the ONT device 51 in real time, and when the power of the ONT device 51 drops to a certain threshold due to power failure or normal power off. The capacitor group starts to discharge, generating a device power-off message, and simultaneously triggers a hardware interrupt to the device 512 that is powered off by the device built in the ONT device 51. The capacitor group is composed of a plurality of capacitors, and the specific capacity thereof is determined according to the power consumption of the ONT device 51.
设备下电消息上报单元 512接收到电源监控单元 511 的硬件中断, 第一 时间将该设备下电消息通过网络节点接口 ( Network Node Interface , Ν Ι )上 报至 OLT设备 52。其中设备下电消息上报单元 512可以利用 ONT设备 51现 有的片上系统(System-On-a-Chip, SOC ) 实现, 从而不需要增加额外的电子 设备。 与 N I接口连接的传输介质可以是电缆、 光纤、 双绞线或其它传输介 内置于 OLT设备 52中的设备下电消息检测网元 521检测离线 ONT设备 51上报的设备下电消息, 该设备下电消息标志该 ONT设备 51 离线是由于掉 电或者正常关闭电源, 而非该 ONT设备 51发生故障。 内置于 OLT设备 52 中的故障判断网元 522根据该设备下电消息检测网元 521 的检测结果, 以及 与该离线 ONT设备 51在同一 OLT设备端口下的其余 ONT设备的在线状态, 可以快速地判断该离线 ONT设备 51或者与所述离线 ONT设备 51连接的主 干线路是否发生故障, 同时得到 PON网络的故障信息。 其故障判断过程如上 所述, 在此不再赘述。 The device power-off message reporting unit 512 receives the hardware interrupt of the power monitoring unit 511, and reports the device power-off message to the OLT device 52 through the network node interface (Ν Ι ). The device power-down message reporting unit 512 can be implemented by using the existing System-On-a-Chip (SOC) of the ONT device 51, so that no additional electronic equipment is needed. The transmission medium connected to the NI interface may be a cable, an optical fiber, a twisted pair or other device built in the OLT device 52. The message detection network element 521 detects the offline ONT device. The device is powered off by the device, and the device is powered off. The ONT device 51 is offline because the power is turned off or the power is normally turned off, instead of the ONT device 51 being faulty. The fault determination network element 522 built in the OLT device 52 can detect the online detection status of the network element 521 according to the device power-off message and the online status of the remaining ONT devices under the same OLT device port of the offline ONT device 51, and can quickly It is judged whether the offline ONT device 51 or the trunk line connected to the offline ONT device 51 fails, and the fault information of the PON network is obtained at the same time. The fault judging process is as described above, and will not be described herein.
同时为了增强 PON网络的故障排查能力, 提高 PON网络的可维护性, 内置于 ONT设备 51中的注册请求发送单元 513在 ONT设备 51接入 PON网 络时, 向 OLT设备 52发送注册请求, 携带 ONT设备 51的注册信息, 其中 ONT设备 51的注册信息如上所述, 在此不再赘述。 内置于 OLT设备 52的注 册请求处理网元 523根据 ONT设备 51发送的注册请求完成 ONT设备 51的 注册。注册成功消息返回网元 524将 ONT设备 51注册成功的消息返回至 ONT 设备 51 , 由内置于 ONT设备 51的注册成功消息接收单元 514接收该注册成 功消息, 表示该 ONT设备 51 已经注册成功。 同时, 内置于 OLT设备 52的 注册信息上报网元 525将 ONT设备 51的注册信息上报至网元管理系统 53。 其中 ONT设备 51的注册信息如上所述, 在此不再赘述。 内置于 OLT设备 52 中的故障信息上报网元 526将故障定位网元 512得到的 PON网络的故障信息 上报至网元管理系统 53 , 网元管理系统 53根据注册信息上报网元 525上报 的各 ONT设备 51的注册信息以及故障信息上报网元 526上报的 PON网络的 故障信息, 准确的定位发生故障的 ONT设备 51的具体物理位置, 从而使网 元管理系统 53不需要对连接至 PON网络的所有离线 ONT设备 51进行—— 排查, 增强了 PON网络的故障排查能力, 提高了 PON网络的可维护性。  At the same time, in order to enhance the PON network's fault-recovery capability and improve the maintainability of the PON network, the registration request sending unit 513 built in the ONT device 51 sends a registration request to the OLT device 52 to carry the ONT when the ONT device 51 accesses the PON network. The registration information of the device 51, wherein the registration information of the ONT device 51 is as described above, and details are not described herein again. The registration request processing network element 523 built in the OLT device 52 completes the registration of the ONT device 51 in accordance with the registration request transmitted from the ONT device 51. The registration success message returning to the network element 524 returns the message that the ONT device 51 is successfully registered to the ONT device 51, and the registration success message receiving unit 514 built in the ONT device 51 receives the registration success message, indicating that the ONT device 51 has successfully registered. At the same time, the registration information reporting unit 525 built in the OLT device 52 reports the registration information of the ONT device 51 to the network element management system 53. The registration information of the ONT device 51 is as described above, and details are not described herein again. The fault information reporting network element 526 built in the OLT device 52 reports the fault information of the PON network obtained by the fault locating network element 512 to the network element management system 53. The network element management system 53 reports the ONTs reported by the network element 525 according to the registration information. The registration information of the device 51 and the fault information report the fault information of the PON network reported by the network element 526 to accurately locate the specific physical location of the faulty ONT device 51, so that the network element management system 53 does not need to connect to the PON network. The offline ONT device 51 performs - troubleshooting, enhances the fault detection capability of the PON network, and improves the maintainability of the PON network.
综上所述, 在本发明实施例中, 当 ONT设备掉电或者正常关闭电源时, 产生一设备下电消息, 当该 ONT设备突然离线时, 根据是否接收到该离线 ONT设备上报的设备下电消息, 以及与该离线 ONT设备在同一 OLT设备端 口下的其余 ONT设备的在线状态判断该离线 ONT设备以及 PON网络中与该 ONT设备连接的主干线路是否发生故障, 增强了 PON网络的故障定位能力。 同时, 通过将 ONT设备的注册信息以及 PON网络的故障信息上报至 EMS, EMS根据 ONT设备的注册信息可以准确定位发生故障的 ONT设备的物理位 置, 增强了 PON网络的故障排查能力, 提高了 PON网络的可维护性。 In summary, in the embodiment of the present invention, when the ONT device is powered off or the power is normally turned off, a device power-off message is generated. When the ONT device is suddenly offline, according to whether the device that is reported by the offline ONT device is received. Electrical message, and the same OLT device side as the offline ONT device The online status of the remaining ONT devices under the mouth determines whether the offline ONT device and the trunk line connected to the ONT device in the PON network are faulty, thereby enhancing the fault location capability of the PON network. At the same time, by reporting the registration information of the ONT device and the fault information of the PON network to the EMS, the EMS can accurately locate the physical location of the failed ONT device according to the registration information of the ONT device, enhance the fault detection capability of the PON network, and improve the PON. The maintainability of the network.
以上所述仅为本发明的较佳实施例而已, 并不用以限制本发明, 凡在本 发明的精神和原则之内所作的任何修改、 等同替换和改进等, 均应包含在本 发明的保护范围之内。  The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

权 利 要求 书 Claim
1、一种无源光网络故障定位的方法,其特征在于, 所述方法包括下述步骤: 检测离线接入终端设备上报的设备下电消息; 所述设备下电消息标志所述 接入终端设备离线是由掉电或者正常关闭电源引起而非所述接入终端设备发生 故障; A method for fault location of a passive optical network, the method comprising the steps of: detecting a device power-off message reported by an offline access terminal device; and the device power-off message marking the access terminal The device is offline due to power failure or normal power off rather than the access terminal device failure;
根据所述检测结果, 以及与所述离线接入终端设备在同一中心接入设备端 口下的其余接入终端设备的在线状态, 判断所述离线接入终端设备或者与所述 离线接入终端设备连接的主干线路是否发生故障。  Determining, according to the detection result, an online status of the remaining access terminal devices under the same central access device port as the offline access terminal device, determining the offline access terminal device or the offline access terminal device Whether the connected trunk line has failed.
2、 如权利要求 1所述的无源光网络故障定位的方法, 其特征在于, 所述根 据所述离线接入终端设备上报的设备下电消息, 以及与所述离线接入终端设备 在同一中心接入设备端口下其余接入终端设备的在线状态, 判断所述离线接入 终端设备或者与所述离线接入终端设备连接的主干线路是否发生故障的步骤具 体为:  The method for fault location of a passive optical network according to claim 1, wherein the device is powered off according to the device reported by the offline access terminal device, and is in the same state as the offline access terminal device. The step of determining whether the offline access terminal device or the trunk line connected to the offline access terminal device fails is determined by the online status of the remaining access terminal devices in the central access device port:
当未检测到所述离线接入终端设备上报的设备下电消息, 且与所述离线接 入终端设备在同一中心接入设备端口下的接入终端设备中存在其余在线接入终 端设备时, 则判断所述离线接入终端设备发生故障;  When the device power-off message reported by the offline access terminal device is not detected, and the remaining online access terminal device exists in the access terminal device under the same central access device port as the offline access terminal device, Determining that the offline access terminal device is faulty;
当未检测到所述离线接入终端设备上报的设备下电消息, 且与所述离线接 入终端设备在同一中心接入设备端口下的其余接入终端设备均离线时, 则判断 与所述离线接入终端设备连接的线路发生故障。  When the device power-off message reported by the offline access terminal device is not detected, and the remaining access terminal devices under the same central access device port as the offline access terminal device are offline, determining and The line connected to the offline access terminal device has failed.
3、 如权利要求 1所述的无源光网络故障定位的方法, 其特征在于, 在判断 所述离线接入终端设备或者与所述离线接入终端设备连接的主干线路是否发生 故障后, 所述方法进一步包括:  The method for fault location of a passive optical network according to claim 1, wherein after determining whether the offline access terminal device or the trunk line connected to the offline access terminal device fails, The method further includes:
将所述无源光网络的故障信息上报至网元管理系统, 以使所述网元管理系 统根据接入终端设备的注册信息以及上报的故障信息, 定位发生故障的接入终 端设备的具体物理位置。 The fault information of the passive optical network is reported to the network element management system, so that the network element management system locates the specific physical of the failed access terminal device according to the registration information of the access terminal device and the reported fault information. position.
4、一种无源光网络的中心接入设备, 其特征在于, 所述中心接入设备包括: 设备下电消息检测网元(521 ) , 用于检测离线接入终端设备上报的设备下 电消息, 所述设备下电消息标志所述接入终端设备离线是由掉电或者正常关闭 电源引起而非所述接入终端设备发生故障; 以及 A central access device for a passive optical network, wherein the central access device includes: a device power-off message detecting network element (521), configured to detect that the device reported by the offline access terminal device is powered off a message that the device power-off message indicates that the access terminal device is offline due to power failure or normal power-off rather than the access terminal device fails;
故障判断网元( 522 ) , 用于根据所述设备下电消息检测网元(521 ) 的检 测结果, 以及与所述离线接入终端设备在所述中心接入设备的同一端口下的其 余接入终端设备的在线状态, 判断所述离线接入终端设备或与所述离线接入终 端设备连接的主干线路是否发生故障。  The fault determining network element (522) is configured to detect, according to the detection result of the device power-off message detecting network element (521), and the remaining connection with the offline access terminal device under the same port of the central access device Entering an online state of the terminal device, determining whether the offline access terminal device or the trunk line connected to the offline access terminal device fails.
5、 如权利要求 4所述的无源光网络的中心接入设备, 其特征在于, 所述中 心接入设备进一步包括:  The central access device of the passive optical network according to claim 4, wherein the central access device further comprises:
注册请求处理网元( 523 ) , 用于根据所述接入终端设备发送的注册请求完 成所述接入终端设备的注册;  a registration request processing network element (523), configured to complete registration of the access terminal device according to the registration request sent by the access terminal device;
注册成功消息返回网元(524 ) , 用于将所述接入终端设备注册成功的消息 返回至所述接入终端设备;  The registration success message returns a network element (524), and the message for successfully registering the access terminal device is returned to the access terminal device;
注册信息上报网元( 525 ) , 用于将所述接入终端设备的注册信息上报至网 元管理系统。  The registration information reporting network element (525) is configured to report the registration information of the access terminal device to the network element management system.
6、 如权利要求 4所述的无源光网络的中心接入设备, 其特征在于, 所述中 心接入设备进一步包括:  The central access device of the passive optical network according to claim 4, wherein the central access device further comprises:
故障信息上报网元( 526 ) , 用于将所述故障判断网元( 522 )得到的无源 光网络的故障信息上报至网元管理系统。  The fault information reporting network element ( 526 ) is configured to report the fault information of the passive optical network obtained by the fault determining network element ( 522 ) to the network element management system.
7、 一种接入终端设备, 其特征在于, 所述接入终端设备包括:  An access terminal device, where the access terminal device includes:
电源监控单元(511 ) , 用于监控所述接入终端设备的电源, 当所述接入终 端设备掉电或正常关闭电源时, 产生设备下电消息, 所述设备下电消息标志所 述接入终端设备离线是由掉电或者正常关闭电源引起而非所述接入终端设备发 生故障;  The power monitoring unit (511) is configured to monitor the power of the access terminal device, and when the access terminal device is powered off or the power is normally turned off, a device power-off message is generated, and the device power-off message flag is connected. The offline of the incoming terminal device is caused by power failure or normal power off; instead, the access terminal device fails;
设备下电消息上报单元(512 ) , 用于将所述设备下电消息上报至无源光网 络侧。 The device is powered off by the message reporting unit (512), and is used to report the device to the passive optical network. Collateral side.
8、 如权利要求 7所述的接入终端设备, 其特征在于, 所述接入终端设备还 包括:  The access terminal device according to claim 7, wherein the access terminal device further comprises:
注册请求发送单元(513 ) , 用于发送注册请求至无源光网络侧, 携带接入 终端设备的注册信息;  a registration request sending unit (513), configured to send a registration request to the passive optical network side, and carry registration information of the access terminal device;
注册成功消息接收单元(514 ) , 用于接收无源光网络侧的注册成功消息。 The registration success message receiving unit (514) is configured to receive a registration success message on the passive optical network side.
9、 一种无源光网络的故障定位系统, 其特征在于, 所述系统包括: 接入终端设备(51 ) , 在掉电或正常关闭电源时, 产生设备下电消息, 并 上报所述设备下电消息, 所述设备下电消息标志所述接入终端设备离线是由掉 电或者正常关闭电源引起而非所述接入终端设备发生故障; 以及 A fault locating system for a passive optical network, the system comprising: an access terminal device (51), generating a device power-off message and reporting the device when the power is turned off or the power is normally turned off. a power-off message, where the device power-off message indicates that the access terminal device is offline due to power failure or normal power-off, and the access terminal device fails;
中心接入设备(52 ) , 用于检测所述接入终端设备(51 )上报的设备下电 消息, 以及与所述接入终端设备 ( 51 )在所述中心接入设备( 52 ) 同一端口下 的其余接入终端设备的在线状态, 判断所述接入终端设备(51 )或者与所述接 入终端设备(51 )连接的主干线路是否发生故障。  a central access device (52), configured to detect a device power-off message reported by the access terminal device (51), and the same port of the access terminal device (51) on the central access device (52) The online status of the remaining access terminal devices determines whether the access terminal device (51) or the trunk line connected to the access terminal device (51) has failed.
10、 如权利要求 9所述的无源光网络的故障定位系统, 其特征在于, 所述 接入终端设备 ( 51 ) 包括:  The fault location system of the passive optical network according to claim 9, wherein the access terminal device (51) comprises:
电源监控单元(511 ) , 用于监控所述接入终端设备的电源, 当所述接入终 端设备掉电或正常关闭电源时, 产生所述设备下电消息;  The power monitoring unit (511) is configured to monitor the power of the access terminal device, and when the access terminal device is powered off or the power is normally turned off, generating the device power-off message;
设备下电消息上报单元(512 ) , 用于将所述设备下电消息上报至所述中心 接入设备。  The device power-off message reporting unit (512) is configured to report the device power-off message to the central access device.
11、 如权利要求 9所述的无源光网络的故障定位系统, 其特征在于, 所述 中心接入设备 ( 52 ) 包括:  The fault location system of the passive optical network according to claim 9, wherein the central access device (52) comprises:
设备下电消息检测网元(521 ) , 用于检测所述接入终端设备上报的设备下 电消息; 以及  The device power-off message detecting network element (521) is configured to detect a device power-off message reported by the access terminal device;
故障判断网元( 522 ) , 用于根据所述设备下电消息检测网元(521 ) 的检 测结果, 以及与所述接入终端设备在同一中心接入设备端口下的其余接入终端 设备的在线状态, 判断所述离线接入终端设备或与所述离线接入终端设备连接 的主干线路是否发生故障。 The fault determining network element (522) is configured to detect, according to the detection result of the device power-off message detecting network element (521), and the remaining access terminals that are in the same central access device port as the access terminal device The online status of the device determines whether the offline access terminal device or the trunk line connected to the offline access terminal device fails.
12、 如权利要求 9 所述的无源光网络的故障定位系统, 其特征在于, 所述 无源光网络的故障定位系统还包括网元管理系统(53 ) ,  The fault location system of the passive optical network according to claim 9, wherein the fault location system of the passive optical network further comprises a network element management system (53).
所述网元管理系统(53 ) , 用于接收来自所述中心接入设备(52 ) 上报的 无源光网络的故障信息, 根据所述无源光网络的故障信息和接入终端设备(51 ) 的注册信息定位发生故障的接入终端设备的具体物理位置。  The network element management system (53) is configured to receive fault information of the passive optical network reported by the central access device (52), according to the fault information of the passive optical network and the access terminal device (51) The registration information identifies the specific physical location of the failed access terminal device.
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