WO2012155723A1 - Epon system and backup power management method for terminal thereof - Google Patents

Epon system and backup power management method for terminal thereof Download PDF

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Publication number
WO2012155723A1
WO2012155723A1 PCT/CN2012/073741 CN2012073741W WO2012155723A1 WO 2012155723 A1 WO2012155723 A1 WO 2012155723A1 CN 2012073741 W CN2012073741 W CN 2012073741W WO 2012155723 A1 WO2012155723 A1 WO 2012155723A1
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Prior art keywords
power
onu
backup
service
threshold
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PCT/CN2012/073741
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French (fr)
Chinese (zh)
Inventor
蒋恒
刘民
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中兴通讯股份有限公司
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Publication of WO2012155723A1 publication Critical patent/WO2012155723A1/en

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Classifications

    • 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
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
    • H04L41/0661—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities by reconfiguring faulty entities
    • 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
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects

Definitions

  • the present invention relates to a passive optical network (PON) technology or, in particular, to an Ethernet Passive Optical Network (EPON) system and a power backup management method thereof.
  • PON passive optical network
  • EPON Ethernet Passive Optical Network
  • EPON is a new type of fiber access network technology that uses point-to-multipoint architecture, passive optical fiber transmission, and provides multiple services over Ethernet. It adopts PON technology in the physical layer, Ethernet protocol in the link layer, and Ethernet access using the topology of PON. Therefore, it combines the advantages of PON technology and Ethernet technology: low cost, high bandwidth, scalability, flexibility, fast service reorganization, compatibility with existing Ethernet, and easy management.
  • the EPON networking structure includes an optical line terminal (OLT) and an optical network unit (ONU).
  • OLT optical line terminal
  • ONU optical network unit
  • the former is generally placed at the central office, and the latter is placed in the corridor or home according to different application scenarios.
  • the ONU has several features as the user-side device.
  • the first one is that there are many types of services supported by the ONU.
  • the VOIP (Voice over Internet Protocol) service supports H248 and SIP (Session Initiation Protocol) protocols. Broadcasting, Qos (Quality of Service) and other functions; the number of user interfaces and interfaces of the two ONUs are also different, such as support for FE (Fast Ethernet), GE (Gigabyte Ethernet), Gigabit Ethernet (Gigabyte Ethernet) Ethernet port), VOIP, El (2M port), etc.; then the ONU is more dispersed in practical applications. With the rapid development of EPON technology and large-scale applications, the requirements for ONU to support backup power (UPS) are also required, and the corresponding management and control strategies are being researched and implemented.
  • UPS backup power
  • the backup power management function of the ONU device in the EPON system mainly has two aspects.
  • the first is the alarm reporting, such as the backup power switching alarm, the low battery alarm, etc.
  • the second is the backup power management policy, which can be configured in the network management system.
  • the user can set the voice service or the Internet service preferentially when the backup power switch occurs.
  • This kind of management strategy can meet the functional requirements of general users, but with the increase of various services and functions, the management and control of the business is too simple and the means are too single.
  • the remote maintenance mode in the EPON system mainly includes WEB (Web page mode), TR069 (User Terminal Equipment WAN management protocol), SNMP (Simple Network Management Protocol), but WEB, SNMP, and TR069 modes are required to be ONUs. Assign a management IP (Internet Protocol) address, which will cause a large consumption of IP resources when the number of ONUs increases. Summary of the invention
  • a backup power management method for an EPON terminal of an Ethernet passive optical network wherein the backup power management policy of each optical network unit ONU is configured in advance in the optical line terminal OLT; the method includes: when the OLT receives the backup power reported by the ONU When the alarm message is switched, the backup management policy of the ONU is sent to the ONU through a predefined extended operation, management, and maintenance OAM protocol data unit PDU message;
  • the ONU controls the running of each service according to the backup management policy carried in the received extended OAM PDU message.
  • the backup management policy includes a service to be managed by the ONU, a power-off threshold for each service, and a power-on alarm power threshold.
  • the following operations are performed: Determining whether the extended OAM PDU message sent by the OLT is received within the preset time, and if yes, controlling the running of each service according to the backup power management policy carried in the received extended OAM PDU message; otherwise, according to the local default The backup management policy controls the operation of each service.
  • the extended OAM PDU message includes a total number of control items, a control item and a threshold value field thereof, and a backup power alarm threshold value field, where the parameter of the total number of control items is the total number of services to be managed, and the control
  • the parameter of the item and its threshold field is the service name and the power-off threshold of the service.
  • the parameter of the power-on alarm threshold field is the power-on alarm power threshold.
  • the process of controlling the running of each service by the ONU according to the backup power management policy carried in the received extended OAM PDU message includes:
  • the ONU parses the received extended OAM PDU message to obtain the power-off threshold value of each service and the power-on alarm power threshold.
  • the power-off threshold of the service has the same power-off threshold as the current power, the corresponding service is disabled; if the current power is the same as the backup power threshold, Report a warning message to the OLT.
  • An EPON system including an OLT and an ONU;
  • the OLT is configured to save a backup management policy of each ONU configured by the user, and when receiving the backup switching alarm message reported by the ONU, use the predefined extended OAM PDU message to set the backup management policy of the ONU. Is sent to the ONU;
  • the ONU is configured to report a backup power switching alarm message to the OLT when the AC power is switched to the backup power source, and control the operation of each service according to the backup power management policy carried in the received extended OAM PDU message.
  • the OLT is configured to provide an interface for configuring a backup management policy of each ONU.
  • the ONU is configured to determine whether an extended OAM PDU message sent by the OLT is received within a preset time, and is determined. The result is that the operation of each service is controlled according to the backup management policy carried in the received extended OAM PDU message.
  • the ONU is configured to parse the received extended OAM PDU message, monitor the current power of the backup power source, and determine the current power quantity and the closed power threshold value of each service and the size of the backup power alarm power threshold. And turning off the corresponding service when the power-off threshold value of each service has the same power-off threshold as the current power; and the current power and the backup power alarm threshold When the same, an alarm message is reported to the OLT.
  • the OLT and the ONU exchange messages through the extended OAM channel.
  • the ONU is further configured to control the running of each service according to a local default backup management policy when the extended OAM PDU message is not received within a preset time.
  • the power management policy of all the ONUs of the EPON system is centralized on the OLT, and after receiving the backup switching alarm message, the backup management policy is sent to the ONU through the predefined extended OAM PDU message, so that the EPON is enabled.
  • the system is more convenient in management and maintenance, effectively realizes centralized power management and service control of the ONU, and reduces maintenance costs.
  • FIG. 1 is a schematic structural diagram of an extended OAM PDU message defined by the present invention
  • FIG. 2 is a flow chart of a preferred embodiment of a management method for an EPON terminal according to the present invention
  • FIG. 3 is a flow chart of an embodiment of step S005 of Figure 2;
  • FIG. 4 is a block diagram showing the principle of a preferred embodiment of the EPON system of the present invention. detailed description
  • the OAM working at the data link layer is mainly used to manage and maintain the ONU.
  • the devices in the EPON system send and receive control information by interacting with OAM PDU messages.
  • Maintenance personnel can manage ONIL OAM more effectively, including standard OAM and extended OAM.
  • the extended OAM is based on standard OAM and adds the message type of OAM PDU. Based on the above features, the present invention completes the remote management of the ONU by the OLT through the extended OAM PDU message.
  • FIG. 1 it is a schematic structural diagram of an extended OAM PDU message defined by the present invention.
  • a Destination Add field a Source Address field
  • a Length/Type (Extended OAM Frame Type) field a field a field a field a field a field a field a field a field a field a field a field a field a field a field a field a field a field a field a field, Length/Type (Extended OAM Frame Type) field, Subtype (Subtype) field, Flags (Mark) field, Code (Extension) field, OUI
  • the parameter of the ItemValue [n] field is the service name and the power-off threshold of the service, indicating that the service of the backup power is higher than the power-off threshold, and the service is normally lower than the power-off threshold.
  • the number on the left of each field indicates the byte number offset value of each field in the extended OAM frame, which is extended by the OAM protocol. Definition, not described in detail here.
  • FIG. 2 it is a flowchart of a preferred embodiment of the management method of the EPON terminal of the present invention. The embodiment includes the following steps:
  • Step S001 Configure the backup management policy of each ONU in the OLT in advance
  • the backup management policy includes the power-off threshold of the service to be managed by the ONU and the power-on alarm threshold. For example, if the user needs to reduce the power to 60%, the IPTV service is shut down. When the power is reduced to 50%. When the power is reduced to 40%, the VOIP service is shut down. When the power is reduced to 30%, the reporting device cannot provide the alarm for normal service. You only need to set it in the OLT without going to the ONU location. .
  • Step S002 Receive a backup power switching alarm message reported by the ONU.
  • the OAM After the ONU is powered on, the OAM is used to establish an extended OAM channel with the OLT.
  • the two-way exchange message is sent and received through the extended OAM channel.
  • the ONU When the ONU switches from AC to standby, the ONU automatically reports the backup switch alarm message to the OLT. .
  • Step S003 The OLT sends the backup management policy of the ONU to the ONU through a predefined extended OAM PDU message.
  • the OLT After receiving the power-on handover alarm message of the ONU, the OLT sends the backup power management policy of the ONU to the ONU as a parameter of the extended OAM PDU message defined by the present invention.
  • Step S004 It is determined whether the extended OAM PDU message delivered by the OLT is received within a preset time, and if yes, step S005 is performed; otherwise, step S006 is performed;
  • the timer can be used to count the time, that is, the preset time is the timer time, and after the alarm message is switched on the ONU, the timer is started, and it is determined whether the OLT is received within the time limit.
  • Step S005 Control the running of each service according to the backup power management policy carried in the received extended OAM PDU message.
  • Step S006 Control the running of each service according to the local default backup management policy.
  • Step S051 The ONU parses the received extended OAM PDU message to obtain a closed power threshold value and a backup power alarm power threshold value of each service.
  • Step S0052 Monitor the current power of the backup power source
  • Step S053 determining the current power level and the power-off threshold value of the service and the power-off alarm power threshold value, if the power-off threshold of each service has the same power-off threshold as the current power The value of step S054; if the current power is the same as the standby power alarm power threshold, then step S055;
  • Step S054 Turn off the corresponding service
  • Step S055 The alarm message is reported to the OLT.
  • the EPON system includes an OLT and an ONU.
  • the OLT is configured to provide an interface for configuring the backup management policy of each ONU connected to the ONU, and saves the backup management policy of each ONU configured by the user.
  • the OLT is pre-defined.
  • the extended OAM PDU message is sent to the corresponding ONU by the backup management policy;
  • the ONU is configured to report the backup power switching alarm message to the OLT when it is switched from the AC power to the backup power source, and determine whether the extended OAM PDU message sent by the OLT is received within the preset time, and is not received within the preset time.
  • the extended OAM PDU message is received, the operation of each service is controlled according to the local default backup management policy.
  • the extended OAM PDU message is received within the preset time, the received extended OAM PDU message is parsed, and the standby power supply is monitored.
  • the current power, the current power and the power-off threshold of each service and the power-off alarm power threshold are determined, and the power-off threshold is the same as the current power in the power-off threshold of each service.
  • the threshold value is closed, the corresponding service is closed; when the current power is the same as the above-mentioned standby power alarm power threshold, the alarm message is reported to the OLT;
  • the OLT and the ONU exchange messages through the extended OAM channel.
  • the above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

Disclosed are an EPON system and a backup power management method for terminal thereof. A backup power management policy of each ONU may be preconfigured in an OLT. Upon receiving a backup power switch alarm message reported by an ONU, the OLT delivers to the ONU the backup power management policy of the ONU through a predefined extended OAM PDU message. The ONU controls the operation of each service according to the backup power management policy carried in the received extended OAM PDU message. The present invention effectively implements centralized backup power management and service control of an ONU and at the same time reduces the maintenance cost.

Description

EPON***及其终端的备电管理方法 技术领域  EPON system and its backup power management method
本发明涉及无源光网络 ( Passive Optical Network, PON )技术领或， 尤其涉及一种以太网无源光网络（ Ethernet Passive Optical Network, EPON ) ***及其终端的备电管理方法。 背景技术  The present invention relates to a passive optical network (PON) technology or, in particular, to an Ethernet Passive Optical Network (EPON) system and a power backup management method thereof. Background technique
EPON是一种新型的光纤接入网技术，它采用点到多点结构、无源光纤 传输， 在以太网之上提供多种业务。 它在物理层采用了 PON技术， 在链路 层使用以太网协议， 利用 PON的拓朴结构实现了以太网的接入。 因此， 它 综合了 PON技术和以太网技术的优点： 低成本、 高带宽、 扩展性强、 灵活 快速的服务重组、 与现有以太网兼容、 方便管理等。 EPON组网结构中包括 局端设备光线路终端（Optical Line Terminal, OLT )和光网络单元（Optical Network Unit, ONU ), 前者一般放置在局端， 后者则根据不同的应用场景 放置在楼道或者家庭中， 具体组网架构请参考附图 1。 其中 ONU作为用户 侧设备有几个特点， 其一是支持的业务类型较多， 如 VOIP ( Voice over Internet Protocol )业务支持 H248、 SIP ( Session Initiation Protocol, 会话初 始协议）等协议， 数据业务支持组播、 Qos ( Quality of Service, 服务质量） 等功能；其二 ONU的用户接口类型和接口数量也各不相同，如支持 FE( Fast Ethernet, 百兆以太网口）、 GE ( Gigabyte Ethernet, 千兆以太网口）、 VOIP, El ( 2M口）等； 再就是 ONU在实际应用中位置比较分散。 随着 EPON技 术的飞速发展以及大规模的应用， 对于 ONU支持备用电源 （UPS )的功能 也提出了要求， 相应的管理和控制策略也正在研究和实施中。  EPON is a new type of fiber access network technology that uses point-to-multipoint architecture, passive optical fiber transmission, and provides multiple services over Ethernet. It adopts PON technology in the physical layer, Ethernet protocol in the link layer, and Ethernet access using the topology of PON. Therefore, it combines the advantages of PON technology and Ethernet technology: low cost, high bandwidth, scalability, flexibility, fast service reorganization, compatibility with existing Ethernet, and easy management. The EPON networking structure includes an optical line terminal (OLT) and an optical network unit (ONU). The former is generally placed at the central office, and the latter is placed in the corridor or home according to different application scenarios. For the specific networking architecture, please refer to Figure 1. The ONU has several features as the user-side device. The first one is that there are many types of services supported by the ONU. For example, the VOIP (Voice over Internet Protocol) service supports H248 and SIP (Session Initiation Protocol) protocols. Broadcasting, Qos (Quality of Service) and other functions; the number of user interfaces and interfaces of the two ONUs are also different, such as support for FE (Fast Ethernet), GE (Gigabyte Ethernet), Gigabit Ethernet (Gigabyte Ethernet) Ethernet port), VOIP, El (2M port), etc.; then the ONU is more dispersed in practical applications. With the rapid development of EPON technology and large-scale applications, the requirements for ONU to support backup power (UPS) are also required, and the corresponding management and control strategies are being researched and implemented.
目前 EPON***中对 ONU设备的备电管理功能主要有两方面的内容， 一是告警上报， 如备电切换告警、 电量过低告警等， 二是备电管理策略， 一般可以在网管***进行配置， 用户可设定在发生备电切换时优先保证语 音业务或上网业务。 这种管理策略可以满足一般用户的功能需求， 但是随 着各种业务和功能的增多， 对于业务的管理和控制还是显得过于简单， 手 段也过于单一。 At present, the backup power management function of the ONU device in the EPON system mainly has two aspects. The first is the alarm reporting, such as the backup power switching alarm, the low battery alarm, etc. The second is the backup power management policy, which can be configured in the network management system. The user can set the voice service or the Internet service preferentially when the backup power switch occurs. This kind of management strategy can meet the functional requirements of general users, but with the increase of various services and functions, the management and control of the business is too simple and the means are too single.
鉴于 ONU分布的长距离和分散等特点， 在局端设备侧即 OLT侧进行 统一的远程集中控制显得尤其重要。 目前在 EPON***中远程维护方式主 要包括 WEB (网页方式）、 TR069 (用户终端设备广域网管理协议）、 SNMP ( Simple Network Management Protocol, 简单网络管理协议）， 但 WEB、 SNMP, TR069方式都需要为 ONU分配一个管理 IP ( Internet Protocol, 互 联网协议 )地址， 当 0NU数目不断增加时会造成 IP资源的大量消耗。 发明内容  In view of the long distance and dispersion of the ONU distribution, it is particularly important to perform unified remote centralized control on the central office side, that is, the OLT side. At present, the remote maintenance mode in the EPON system mainly includes WEB (Web page mode), TR069 (User Terminal Equipment WAN management protocol), SNMP (Simple Network Management Protocol), but WEB, SNMP, and TR069 modes are required to be ONUs. Assign a management IP (Internet Protocol) address, which will cause a large consumption of IP resources when the number of ONUs increases. Summary of the invention
本发明的目的在于提供一种 EP0N***及其终端的备电管理方法， 以 优化现有的管理方式。  It is an object of the present invention to provide a backup power management method for an EP0N system and its terminal to optimize an existing management method.
为了达到上述目的， 本发明的技术方案是这样实现的：  In order to achieve the above object, the technical solution of the present invention is achieved as follows:
一种以太网无源光网络 EPON终端的备电管理方法， 其中， 预先在光 线路终端 OLT中配置各光网络单元 ONU的备电管理策略； 该方法包括： 当 OLT收到 ONU上报的备电切换告警消息时， 通过预先定义的扩展 的操作、 管理和维护 OAM协议数据单元 PDU消息将所述 ONU的备电管 理策略下发给所述 ONU;  A backup power management method for an EPON terminal of an Ethernet passive optical network, wherein the backup power management policy of each optical network unit ONU is configured in advance in the optical line terminal OLT; the method includes: when the OLT receives the backup power reported by the ONU When the alarm message is switched, the backup management policy of the ONU is sent to the ONU through a predefined extended operation, management, and maintenance OAM protocol data unit PDU message;
所述 ONU根据收到的扩展的 OAM PDU消息中携带的备电管理策略控 制各业务的运行。  The ONU controls the running of each service according to the backup management policy carried in the received extended OAM PDU message.
其中，所述备电管理策略包括所述 ONU需要管理的业务以及各业务的 关闭业务电量门限值以及备电告警电量门限值。  The backup management policy includes a service to be managed by the ONU, a power-off threshold for each service, and a power-on alarm power threshold.
其中， 所述 ONU上报备电切换告警消息后， 还执行如下操作： 判断是否在预设时间内收到 OLT下发的扩展的 OAM PDU消息，若是， 则根据收到的扩展的 OAM PDU消息中携带的备电管理策略控制各业务的 运行； 否则， 按照本地默认的备电管理策略控制各业务的运行。 After the ONU reports the backup switching alarm message, the following operations are performed: Determining whether the extended OAM PDU message sent by the OLT is received within the preset time, and if yes, controlling the running of each service according to the backup power management policy carried in the received extended OAM PDU message; otherwise, according to the local default The backup management policy controls the operation of each service.
其中， 所述扩展的 OAM PDU消息包括控制项总数字段、 控制项及其 门限值字段以及备电告警门限值字段， 所述控制项总数字段的参数为需要 管理的业务总数， 所述控制项及其门限值字段的参数为业务名称及所述业 务的关闭电量门限值， 所述备电告警门限值字段的参数为备电告警电量门 限值。  The extended OAM PDU message includes a total number of control items, a control item and a threshold value field thereof, and a backup power alarm threshold value field, where the parameter of the total number of control items is the total number of services to be managed, and the control The parameter of the item and its threshold field is the service name and the power-off threshold of the service. The parameter of the power-on alarm threshold field is the power-on alarm power threshold.
其中，所述 ONU根据收到的扩展的 OAM PDU消息中携带的备电管理 策略控制各业务的运行的过程包括：  The process of controlling the running of each service by the ONU according to the backup power management policy carried in the received extended OAM PDU message includes:
ONU解析收到的扩展的 OAM PDU消息， 得到各业务的关闭电量门限 值以及备电告警电量门限值；  The ONU parses the received extended OAM PDU message to obtain the power-off threshold value of each service and the power-on alarm power threshold.
监测备用电源的当前电量；  Monitor the current power of the backup power source;
判断所述当前电量与所述各业务的关闭电量门限值以及备电告警电量 门限值的大小；  Determining a size of the current power and a power-off threshold of each service and a power-on alarm power threshold;
若所述各业务的关闭电量门限值中有与所述当前电量相同的关闭电量 门限值， 则关闭相应的业务； 若所述当前电量与所述备电告警电量门限值 相同， 则上报告警消息给 OLT。  If the power-off threshold of the service has the same power-off threshold as the current power, the corresponding service is disabled; if the current power is the same as the backup power threshold, Report a warning message to the OLT.
一种 EPON*** , 包括 OLT和 ONU; 其中 ,  An EPON system, including an OLT and an ONU; wherein
所述 OLT, 用于保存用户配置的各 ONU的备电管理策略， 并在收到 ONU上报的备电切换告警消息时， 通过预先定义的扩展的 OAM PDU消息 将所述 ONU的备电管理策略下发给所述 ONU;  The OLT is configured to save a backup management policy of each ONU configured by the user, and when receiving the backup switching alarm message reported by the ONU, use the predefined extended OAM PDU message to set the backup management policy of the ONU. Is sent to the ONU;
所述 ONU, 用于在从交流电切换到备用电源时， 上报备电切换告警消 息给所述 OLT, 以及根据收到的扩展的 OAM PDU消息中携带的备电管理 策略控制各业务的运行。 其中，所述 OLT,用于为用户提供配置各 ONU的备电管理策略的接口； 所述 ONU, 用于判断是否在预设时间内收到 OLT下发的扩展的 OAM PDU消息， 并在判断结果为是时根据收到的扩展的 OAM PDU消息中携带 的备电管理策略控制各业务的运行。 The ONU is configured to report a backup power switching alarm message to the OLT when the AC power is switched to the backup power source, and control the operation of each service according to the backup power management policy carried in the received extended OAM PDU message. The OLT is configured to provide an interface for configuring a backup management policy of each ONU. The ONU is configured to determine whether an extended OAM PDU message sent by the OLT is received within a preset time, and is determined. The result is that the operation of each service is controlled according to the backup management policy carried in the received extended OAM PDU message.
其中， 所述 ONU, 用于解析收到的扩展的 OAM PDU消息， 监测备用 电源的当前电量， 判断当前电量与解析得到的各业务的关闭电量门限值以 及备电告警电量门限值的大小， 并在所述各业务的关闭电量门限值中有与 所述当前电量相同的关闭电量门限值时， 关闭相应的业务； 以及在所述当 前电量与所述备电告警电量门限值相同时， 上报告警消息给所述 OLT。  The ONU is configured to parse the received extended OAM PDU message, monitor the current power of the backup power source, and determine the current power quantity and the closed power threshold value of each service and the size of the backup power alarm power threshold. And turning off the corresponding service when the power-off threshold value of each service has the same power-off threshold as the current power; and the current power and the backup power alarm threshold When the same, an alarm message is reported to the OLT.
其中， 所述 OLT与所述 ONU之间通过扩展的 OAM通道交互消息。 其中， 所述 ONU, 还用于在预设时间内没有收到扩展的 OAM PDU消 息时， 按照本地默认的备电管理策略控制各业务的运行。  The OLT and the ONU exchange messages through the extended OAM channel. The ONU is further configured to control the running of each service according to a local default backup management policy when the extended OAM PDU message is not received within a preset time.
本发明将 EPON***的所有 ONU的备电管理策略都集中在 OLT上， 并在收到备电切换告警消息后， 通过预先定义扩展的 OAM PDU消息将备 电管理策略下发给 ONU, 使得 EPON***在管理和维护上更加方便， 有效 地实现了 ONU的备电集中管理和业务控制， 并降低了维护成本。 附图说明  The power management policy of all the ONUs of the EPON system is centralized on the OLT, and after receiving the backup switching alarm message, the backup management policy is sent to the ONU through the predefined extended OAM PDU message, so that the EPON is enabled. The system is more convenient in management and maintenance, effectively realizes centralized power management and service control of the ONU, and reduces maintenance costs. DRAWINGS
图 1是本发明定义的扩展的 OAM PDU消息的结构示意图；  1 is a schematic structural diagram of an extended OAM PDU message defined by the present invention;
图 2是本发明 EPON终端的管理方法优选实施例流程图；  2 is a flow chart of a preferred embodiment of a management method for an EPON terminal according to the present invention;
图 3是图 2中步驟 S005的实施例流程图；  Figure 3 is a flow chart of an embodiment of step S005 of Figure 2;
图 4是本发明 EPON***优选实施例原理框图。 具体实施方式  4 is a block diagram showing the principle of a preferred embodiment of the EPON system of the present invention. detailed description
在 EPON***中， 工作在数据链路层的 OAM主要是用来管理和维护 ONU, EPON***的设备间通过交互 OAM PDU消息来收发控制信息， 使 维护人员能够更有效地管理 ONIL OAM包括标准的 OAM和扩展的 OAM, 其中扩展的 OAM是在标准的 OAM的基础上，增加了 OAM PDU的消息种 类。 基于以上特点， 本发明通过扩展的 OAM PDU消息， 完成 OLT对 ONU 的远程管理。 In the EPON system, the OAM working at the data link layer is mainly used to manage and maintain the ONU. The devices in the EPON system send and receive control information by interacting with OAM PDU messages. Maintenance personnel can manage ONIL OAM more effectively, including standard OAM and extended OAM. The extended OAM is based on standard OAM and adds the message type of OAM PDU. Based on the above features, the present invention completes the remote management of the ONU by the OLT through the extended OAM PDU message.
如图 1所示， 是本发明定义的扩展的 OAM PDU消息的结构示意图， 本发明定义的扩展的 OAM PDU消息中， Destination Add (目的地址 )字段、 Source Address (源地址 )字段、 Length/Type (扩展 OAM帧类型 )字段、 Subtype (子类型） 字段、 Flags (标记） 字段、 Code (扩展码） 字段、 OUI As shown in FIG. 1 , it is a schematic structural diagram of an extended OAM PDU message defined by the present invention. In the extended OAM PDU message defined by the present invention, a Destination Add field, a Source Address field, and a Length/Type (Extended OAM Frame Type) field, Subtype (Subtype) field, Flags (Mark) field, Code (Extension) field, OUI
(厂商标识）字段、 Ext. Opcode (扩展操作码）字段与现有的扩展的 OAM PDU消息相同， 其中本发明定义的字段包括 ItemNum (控制项总数 )字段、 ItemValue [n] (控制项及其门限值）字段以及 OnuValue (备电告警门限值） 字段， 其中， 上述 ItemNum字段的参数为需要控制的业务总数， 比如， 根 据用户设置， 需要对 ONU上的 3个业务进行管理， 则 ItemNum=3; 上述 ItemValue [n]字段的参数为业务名称及上述业务的关闭电量门限值， 表示备 用电源的电量高于关闭电量门限值时正常开启该业务， 低于关闭电量门限 值时关闭该业务， ItemValue[n]代表的业务类型由协议约定。 比如， 根据用 户设置， 需要在电量降低到 60%时， 关闭 IPTV业务， 在电量降低到 50% 时，关闭 FE业务，在电量降低到 40%时，关闭 VOIP业务，则此时 ItemValue [1]=IPTV, 60%, ItemValue [2]=FE, 50% , ItemValue [3]=VOIP, 40%; 上述 OnuValue字段的参数为备电告警电量门限值， 比如根据用户设置， 需 要在电量减低到 30%时， 上报设备无法提供正常服务的告警， 则 OnuValue=30% , 另夕卜， 主干编号 （Branch ), 叶子节点编号 （Leaf )、 长度The (vendor identification) field and the Ext. Opcode (extended opcode) field are the same as the existing extended OAM PDU message, wherein the fields defined by the present invention include the ItemNum (Total Control Items) field, ItemValue [n] (Control and its The threshold value field and the OnuValue threshold field, where the parameter of the ItemNum field is the total number of services to be controlled, for example, according to the user setting, three services on the ONU need to be managed, then ItemNum =3; The parameter of the ItemValue [n] field is the service name and the power-off threshold of the service, indicating that the service of the backup power is higher than the power-off threshold, and the service is normally lower than the power-off threshold. Close the service, the business type represented by ItemValue[n] is agreed by the agreement. For example, according to user settings, when the power is reduced to 60%, the IPTV service is turned off. When the power is reduced to 50%, the FE service is turned off. When the power is reduced to 40%, the VOIP service is closed. At this time, ItemValue [1] =IPTV, 60%, ItemValue [2]=FE, 50%, ItemValue [3]=VOIP, 40%; The parameter of the above-mentioned OnuValue field is the power-on alarm power threshold. For example, according to the user setting, the power needs to be reduced to At 30%, the escalation device cannot provide the alarm for normal service, then OnuValue=30%, in addition, the trunk number, the leaf node number (Leaf), the length
( Width )、 Value, Branch=0xC7、 Leaf=0xXX以及 Variable Width字段均为 扩展 OAM协议的字段，各字段左边数字表示扩展的 OAM帧中各字段的字 节数偏移值， 均由扩展 OAM协议定义， 此处不详细描述。 如图 2所示， 是本发明 EPON终端的管理方法优选实施例流程图， 本 实施例包括以下步驟： The (Width), Value, Branch=0xC7, Leaf=0xXX, and Variable Width fields are all fields of the extended OAM protocol. The number on the left of each field indicates the byte number offset value of each field in the extended OAM frame, which is extended by the OAM protocol. Definition, not described in detail here. As shown in FIG. 2, it is a flowchart of a preferred embodiment of the management method of the EPON terminal of the present invention. The embodiment includes the following steps:
步驟 S001 : 预先在 OLT中配置各 ONU的备电管理策略；  Step S001: Configure the backup management policy of each ONU in the OLT in advance;
备电管理策略包括 ONU 的需要管理的各业务的关闭业务电量门限值 以及备电告警电量门限值， 比如用户需要在电量降低到 60%时， 关闭 IPTV 业务， 在电量降低到 50%时， 关闭 FE业务， 在电量降低到 40%时， 关闭 VOIP业务， 在电量减低到 30%时， 上报设备无法提供正常服务的告警， 则 只需在 OLT中设置即可， 而不用去到 ONU所在地。  The backup management policy includes the power-off threshold of the service to be managed by the ONU and the power-on alarm threshold. For example, if the user needs to reduce the power to 60%, the IPTV service is shut down. When the power is reduced to 50%. When the power is reduced to 40%, the VOIP service is shut down. When the power is reduced to 30%, the reporting device cannot provide the alarm for normal service. You only need to set it in the OLT without going to the ONU location. .
步驟 S002: 收到 ONU上报的备电切换告警消息；  Step S002: Receive a backup power switching alarm message reported by the ONU.
ONU上电后通过 OAM发现流程与 OLT建立扩展 OAM通道， 双方的 交互消息即通过上述扩展的 OAM通道进行收发， ONU在从交流电切换到 备用电源时， 会自动上报备电切换告警消息给 OLT。  After the ONU is powered on, the OAM is used to establish an extended OAM channel with the OLT. The two-way exchange message is sent and received through the extended OAM channel. When the ONU switches from AC to standby, the ONU automatically reports the backup switch alarm message to the OLT. .
步驟 S003: OLT通过预先定义的扩展的 OAM PDU消息将上述 ONU 的备电管理策略下发给上述 ONU;  Step S003: The OLT sends the backup management policy of the ONU to the ONU through a predefined extended OAM PDU message.
OLT收到 ONU的备电切换告警消息后， 将上述 ONU的备电管理策略 作为本发明定义的扩展的 OAM PDU消息的参数， 发送给上述 ONU。  After receiving the power-on handover alarm message of the ONU, the OLT sends the backup power management policy of the ONU to the ONU as a parameter of the extended OAM PDU message defined by the present invention.
步驟 S004: 判断是否在预设时间内收到 OLT下发的扩展的 OAM PDU 消息， 若是， 则执行步驟 S005; 否则， 执行步驟 S006;  Step S004: It is determined whether the extended OAM PDU message delivered by the OLT is received within a preset time, and if yes, step S005 is performed; otherwise, step S006 is performed;
本步驟中， 可通过定时器来计时， 即上述预设时间即为定时器的定时 时间， ONU上 4艮备电切换告警消息后， 启动定时器， 并判断是否在定时时 间内收到的 OLT下发的备电管理策略。  In this step, the timer can be used to count the time, that is, the preset time is the timer time, and after the alarm message is switched on the ONU, the timer is started, and it is determined whether the OLT is received within the time limit. The backup power management strategy issued.
步驟 S005: 按照收到的扩展的 OAM PDU消息中携带的备电管理策略 控制各业务的运行；  Step S005: Control the running of each service according to the backup power management policy carried in the received extended OAM PDU message.
步驟 S006: 按照本地默认的备电管理策略控制各业务的运行。  Step S006: Control the running of each service according to the local default backup management policy.
如图 3所示， 是图 2中步驟 S005的实施例流程图； 包括以下步驟： 步驟 S051 : ONU解析收到的扩展的 OAM PDU消息，得到各业务的关 闭电量门限值以及备电告警电量门限值； As shown in FIG. 3, it is a flowchart of the embodiment of step S005 in FIG. 2; the following steps are included: Step S051: The ONU parses the received extended OAM PDU message to obtain a closed power threshold value and a backup power alarm power threshold value of each service.
步驟 S0052: 监测备用电源的当前电量；  Step S0052: Monitor the current power of the backup power source;
步驟 S053: 判断上述当前电量与上述各业务的关闭电量门限值以及备 电告警电量门限值的大小， 若上述各业务的关闭电量门限值中有与上述当 前电量相同的关闭电量门限值， 则执行步驟 S054; 若上述当前电量与上述 备电告警电量门限值相同， 则执行步驟 S055;  Step S053: determining the current power level and the power-off threshold value of the service and the power-off alarm power threshold value, if the power-off threshold of each service has the same power-off threshold as the current power The value of step S054; if the current power is the same as the standby power alarm power threshold, then step S055;
步驟 S054: 关闭相应的业务；  Step S054: Turn off the corresponding service;
步驟 S055: 上报告警消息给 OLT。  Step S055: The alarm message is reported to the OLT.
如图 4所示， 是本发明 EPON***优选实施例原理框图， 本实施中， EPON***包括 OLT和 ONU,  As shown in FIG. 4, it is a schematic block diagram of a preferred embodiment of the EPON system of the present invention. In this implementation, the EPON system includes an OLT and an ONU.
OLT,用于为用户提供配置与其相连的各 ONU的备电管理策略的接口， 并保存用户配置的各 ONU的备电管理策略， 在收到 ONU上报的备电切换 告警消息时， 通过预先定义的扩展的 OAM PDU消息将备电管理策略下发 给相应的 ONU;  The OLT is configured to provide an interface for configuring the backup management policy of each ONU connected to the ONU, and saves the backup management policy of each ONU configured by the user. When receiving the backup switching alarm message reported by the ONU, the OLT is pre-defined. The extended OAM PDU message is sent to the corresponding ONU by the backup management policy;
ONU, 用于在从交流电切换到备用电源时， 上报备电切换告警消息给 OLT, 并判断是否在预设时间内收到 OLT下发的扩展的 OAM PDU消息， 在预设时间内没有收到扩展的 OAM PDU消息时， 按照本地默认的备电管 理策略控制各业务的运行； 在预设时间内收到扩展的 OAM PDU消息时， 解析收到的扩展的 OAM PDU消息， 监测备用电源的当前电量， 判断当前 电量与解析得到的各业务的关闭电量门限值以及备电告警电量门限值的大 小， 并在上述各业务的关闭电量门限值中有与上述当前电量相同的关闭电 量门限值时， 关闭相应的业务； 在上述当前电量与上述备电告警电量门限 值相同时， 上报告警消息给上述 OLT;  The ONU is configured to report the backup power switching alarm message to the OLT when it is switched from the AC power to the backup power source, and determine whether the extended OAM PDU message sent by the OLT is received within the preset time, and is not received within the preset time. When the extended OAM PDU message is received, the operation of each service is controlled according to the local default backup management policy. When the extended OAM PDU message is received within the preset time, the received extended OAM PDU message is parsed, and the standby power supply is monitored. The current power, the current power and the power-off threshold of each service and the power-off alarm power threshold are determined, and the power-off threshold is the same as the current power in the power-off threshold of each service. When the threshold value is closed, the corresponding service is closed; when the current power is the same as the above-mentioned standby power alarm power threshold, the alarm message is reported to the OLT;
OLT与 ONU之间通过扩展的 OAM通道交互消息。 以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。 The OLT and the ONU exchange messages through the extended OAM channel. The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

权利要求书 Claim
1、 一种以太网无源光网络 EPON终端的备电管理方法， 其中， 预先在 光线路终端 OLT中配置各光网络单元 ONU的备电管理策略； 该方法包括： 当 OLT收到 ONU上报的备电切换告警消息时， 通过预先定义的扩展 的操作、 管理和维护 OAM协议数据单元 PDU消息将所述 ONU的备电管 理策略下发给所述 ONU;  A backup power management method for an EPON terminal of an Ethernet passive optical network, wherein a standby power management policy of each optical network unit ONU is configured in advance in an optical line terminal OLT; the method includes: when the OLT receives an ONU report The backup power management policy of the ONU is sent to the ONU through the predefined extended operation, management, and maintenance of the OAM protocol data unit PDU message;
所述 ONU根据收到的扩展的 OAM PDU消息中携带的备电管理策略控 制各业务的运行。  The ONU controls the running of each service according to the backup management policy carried in the received extended OAM PDU message.
2、 根据权利要求 1 所述的方法， 其中， 所述备电管理策略包括所述 ONU需要管理的业务以及各业务的关闭业务电量门限值以及备电告警电量 门限值。  2. The method according to claim 1, wherein the backup management policy includes a service to be managed by the ONU, a power-off threshold for each service, and a power-on alarm power threshold.
3、 根据权利要求 1或 2所述的方法， 其中， 所述 ONU上报备电切换 告警消息后， 还执行如下操作：  3. The method according to claim 1 or 2, wherein after the ONU reports the backup switching alarm message, the following operations are performed:
判断是否在预设时间内收到 OLT下发的扩展的 OAM PDU消息，若是， 则根据收到的扩展的 OAM PDU消息中携带的备电管理策略控制各业务的 运行； 否则， 按照本地默认的备电管理策略控制各业务的运行。  Determining whether the extended OAM PDU message sent by the OLT is received within the preset time, and if yes, controlling the running of each service according to the backup power management policy carried in the received extended OAM PDU message; otherwise, according to the local default The backup management policy controls the operation of each service.
4、 根据权利要求 3所述的方法， 其中， 所述扩展的 OAM PDU消息包 括控制项总数字段、 控制项及其门限值字段以及备电告警门限值字段， 所 述控制项总数字段的参数为需要管理的业务总数， 所述控制项及其门限值 字段的参数为业务名称及所述业务的关闭电量门限值， 所述备电告警门限 值字段的参数为备电告警电量门限值。  The method according to claim 3, wherein the extended OAM PDU message includes a total number of control items, a control item and a threshold value field thereof, and a backup alarm threshold value field, where the total number of control items is The parameter is the total number of services to be managed, and the parameter of the control item and its threshold field is the service name and the power-off threshold of the service, and the parameter of the backup alarm threshold field is the backup power alarm. Threshold.
5、 根据权利要求 4所述的方法， 其中， 所述 ONU根据收到的扩展的 OAM PDU消息中携带的备电管理策略控制各业务的运行的过程包括：  The method according to claim 4, wherein the process of controlling the operation of each service by the ONU according to the backup power management policy carried in the received extended OAM PDU message includes:
ONU解析收到的扩展的 OAM PDU消息， 得到各业务的关闭电量门限 值以及备电告警电量门限值； 监测备用电源的当前电量； The ONU parses the received extended OAM PDU message, and obtains the power-off threshold value of the service and the power-on alarm power threshold. Monitor the current power of the backup power source;
判断所述当前电量与所述各业务的关闭电量门限值以及备电告警电量 门限值的大小；  Determining a size of the current power and a power-off threshold of each service and a power-on alarm power threshold;
若所述各业务的关闭电量门限值中有与所述当前电量相同的关闭电量 门限值， 则关闭相应的业务； 若所述当前电量与所述备电告警电量门限值 相同， 则上报告警消息给 OLT。  If the power-off threshold of the service has the same power-off threshold as the current power, the corresponding service is disabled; if the current power is the same as the backup power threshold, Report a warning message to the OLT.
6、 一种 EPON*** , 包括 OLT和 ONU; 其中 ,  6. An EPON system comprising an OLT and an ONU; wherein
所述 OLT, 用于保存用户配置的各 ONU 的备电管理策略， 并在收到 ONU上报的备电切换告警消息时， 通过预先定义的扩展的 OAM PDU消息 将所述 ONU的备电管理策略下发给所述 ONU;  The OLT is configured to save a backup management policy of each ONU configured by the user, and when receiving the backup switching alarm message reported by the ONU, use the predefined extended OAM PDU message to set the backup management policy of the ONU. Is sent to the ONU;
所述 ONU, 用于在从交流电切换到备用电源时， 上报备电切换告警消 息给所述 OLT, 以及根据收到的扩展的 OAM PDU消息中携带的备电管理 策略控制各业务的运行。  The ONU is configured to report the backup power switching alarm message to the OLT when the AC power is switched to the standby power source, and control the operation of each service according to the backup power management policy carried in the received extended OAM PDU message.
7、 根据权利要求 6所述的***， 其中，  7. The system according to claim 6, wherein
所述 OLT, 用于为用户提供配置各 ONU的备电管理策略的接口； 所述 ONU, 用于判断是否在预设时间内收到 OLT下发的扩展的 OAM The OLT is configured to provide an interface for configuring a backup management policy of each ONU. The ONU is configured to determine whether the extended OAM delivered by the OLT is received within a preset time.
PDU消息， 并在判断结果为是时根据收到的扩展的 OAM PDU消息中携带 的备电管理策略控制各业务的运行。 The PDU message, and when the judgment result is yes, controls the operation of each service according to the backup power management policy carried in the received extended OAM PDU message.
8、 根据权利要求 7所述的***， 其中，  8. The system according to claim 7, wherein
所述 ONU, 用于解析收到的扩展的 OAM PDU消息， 监测备用电源的 当前电量， 判断当前电量与解析得到的各业务的关闭电量门限值以及备电 告警电量门限值的大小， 并在所述各业务的关闭电量门限值中有与所述当 前电量相同的关闭电量门限值时， 关闭相应的业务； 以及在所述当前电量 与所述备电告警电量门限值相同时， 上报告警消息给所述 OLT。  The ONU is configured to parse the received extended OAM PDU message, monitor the current power of the backup power source, determine the current power level, the power-off threshold value of each service and the power-off alarm power threshold value, and When the power-off threshold value of each service has the same power-off threshold as the current power, the corresponding service is shut down; and when the current power is the same as the power-on alarm power threshold , the alarm message is reported to the OLT.
9、 根据权利要求 6至 8任一项所述的***， 其中， 所述 OLT与所述 ONU之间通过扩展的 OAM通道交互消息。 The system according to any one of claims 6 to 8, wherein the OLT and the The ONUs exchange messages through the extended OAM channel.
10、 根据权利要求 6至 8任一项所述的***， 其中，  10. The system according to any one of claims 6 to 8, wherein
所述 ONU, 还用于在预设时间内没有收到扩展的 OAM PDU消息时, 按照本地默认的备电管理策略控制各业务的运行。  The ONU is further configured to control the running of each service according to a local default backup management policy when the extended OAM PDU message is not received within a preset time.
PCT/CN2012/073741 2011-09-20 2012-04-10 Epon system and backup power management method for terminal thereof WO2012155723A1 (en)

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