WO2024017344A1 - 管理从光网络单元的方法、光线路终端、主光网络单元 - Google Patents

管理从光网络单元的方法、光线路终端、主光网络单元 Download PDF

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Publication number
WO2024017344A1
WO2024017344A1 PCT/CN2023/108438 CN2023108438W WO2024017344A1 WO 2024017344 A1 WO2024017344 A1 WO 2024017344A1 CN 2023108438 W CN2023108438 W CN 2023108438W WO 2024017344 A1 WO2024017344 A1 WO 2024017344A1
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onu
slave
message
olt
master
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PCT/CN2023/108438
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English (en)
French (fr)
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孙一牧
贺峰
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中兴通讯股份有限公司
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Publication of WO2024017344A1 publication Critical patent/WO2024017344A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2589—Bidirectional transmission

Definitions

  • the present disclosure relates to the field of optical network technology, and in particular to a method of managing a slave optical network unit, an optical line terminal, a master optical network unit, and a storage medium.
  • the optical network unit (ONU, Optical Network Unit) connected to the optical line terminal (OLT, Optical Line Termination) may be Connect to other ONUs, that is, connect to the slave ONU (Sub ONU) under the main ONU (Main ONU).
  • the OLT cannot directly manage these slave ONUs, which brings inconvenience to the management of the optical network.
  • the present disclosure provides a method for managing a slave optical network unit, an optical line terminal, a master optical network unit, and a storage medium.
  • embodiments of the present disclosure provide a method for managing a slave optical network unit ONU, which is applied to an optical line terminal OLT.
  • the OLT is connected to a master ONU, and the master ONU is also connected to one or more slave ONUs; the method includes: sending a management message to the main ONU; the management message is a message used to manage the ONU.
  • the main ONU includes one or more channels, and the one or more channels are connected to the one or more channels.
  • the first slave ONU is one of the one or more slave ONUs, and the first path corresponding to the first slave ONU is in a conductive state; when the feedback message is a second feedback message , the feedback message is generated by the main ONU, and the one or more channels are in a closed state.
  • embodiments of the present disclosure provide a method for managing slave ONUs, which is applied to a master ONU.
  • the master ONU is connected to an OLT.
  • the master ONU is also connected to one or more slave ONUs.
  • the master ONU includes one or more slave ONUs. channels, and the one or more channels correspond to the one or more slave ONUs.
  • the method includes: receiving a management message from the OLT; the management message is a message used to manage the ONU. ; When the first path is in the conductive state, the management message is sent to the first slave ONU, the first path is one of the one or more paths, and the first slave ONU is the same as the first slave ONU.
  • a slave ONU corresponding to one channel receives a feedback message sent by the first slave ONU, where the feedback message is a first feedback message; and sends the feedback message to the OLT.
  • embodiments of the present disclosure provide an OLT.
  • the OLT is connected to a master ONU.
  • the master ONU is also connected to one or more slave ONUs.
  • the OLT includes one or more memories and one or more processors;
  • the memory stores a computer program that can be executed by the processor.
  • the present invention can be realized. Any method of managing the slave ONU can be used in the embodiment.
  • embodiments of the present disclosure provide a master ONU, which is connected to an OLT.
  • the master ONU is also connected to one or more slave ONUs.
  • the master ONU includes one or more memories and one or more processors;
  • the memory stores a computer program that can be executed by the processor. When the computer program is executed by the processor, it can implement any method of managing a slave ONU in the embodiments of the present disclosure.
  • embodiments of the present disclosure provide a storage medium on which a computer program is stored.
  • the computer program is executed by a processor, any method for managing a slave ONU in the embodiments of the present disclosure is implemented.
  • Figure 1 is a block diagram of an optical network system to which the method for managing slave ONUs provided by an embodiment of the present disclosure is applicable;
  • Figure 2 is a flow chart of a method for managing slave ONUs provided by an embodiment of the present disclosure
  • Figure 3 is a flow chart of another method of managing a slave ONU provided by an embodiment of the present disclosure.
  • Figure 4 is a flow chart of another method of managing a slave ONU provided by an embodiment of the present disclosure.
  • Figure 5 is a flow chart of another method of managing a slave ONU provided by an embodiment of the present disclosure.
  • Figure 6 is a schematic diagram of management message transmission of a state in another method of managing slave ONUs provided by an embodiment of the present disclosure
  • Figure 7 is a schematic diagram of management message transmission in another state in another method of managing slave ONUs provided by an embodiment of the present disclosure
  • FIG. 8 is a block diagram of an OLT provided by an embodiment of the present disclosure.
  • Figure 9 is a block diagram of a main ONU provided by an embodiment of the present disclosure.
  • Figure 10 is a block diagram of a storage medium provided by an embodiment of the present disclosure.
  • plan and/or cross-sectional illustrations are schematic illustrations of the disclosure. Accordingly, example illustrations may be modified based on manufacturing techniques and/or tolerances.
  • the present disclosure is not limited to the embodiments shown in the drawings but includes modifications of configurations formed based on manufacturing processes. Accordingly, the regions illustrated in the figures are of a schematic nature and the shapes of the regions shown in the figures are illustrative of the specific shapes of regions of the element and are not intended to be limiting.
  • GPON Gigabit-Capable Passive Optical Networks
  • the GPON system can include OLT and ONU.
  • the OLT is connected to the ONU, and the ITU-T G.988 protocol is an internationally accepted standard for ONU management and control interface (OMCI, ONU management and control interface).
  • OMCI ONU management and control interface
  • the OMCI protocol is managed by the OLT.
  • the OLT can manage the ONUs connected to it based on this protocol.
  • FTTR technology requires laying optical fiber to every room, so you can refer to Figure 1 to directly connect the OLT's main ONU (Main ONU) and then connect the slave ONU (Sub ONU) located in each room to interconnect with the home gateway. , to ensure the high-quality development of online education, home office, home entertainment and other business applications to the greatest extent possible.
  • the OLT can only realize the management and control of the directly connected master ONU, but cannot realize the management of the subordinate slave ONU.
  • embodiments of the present disclosure provide a method for managing a slave optical network unit ONU.
  • the method is used for an optical line terminal OLT.
  • the OLT is connected to a master ONU, and the master ONU is also connected to one or more slave ONUs.
  • the method includes the following steps S101 to S102.
  • step S101 a management message is sent to the main ONU.
  • Management messages are messages used to manage ONUs.
  • the master ONU includes one or more channels, and one or more channels correspond to one or more slave ONUs in a one-to-one manner.
  • step S102 receive the feedback message sent by the main ONU.
  • the feedback message is the first feedback message or the second feedback message; when the feedback message is the first feedback message, it indicates that the feedback message is generated by the first slave ONU among one or more slave ONUs, and the first slave ONU corresponds to The first channel is in the on state; when the feedback message is the second feedback message, it indicates that the feedback message is generated by the main ONU, and the one or more channels are in the closed state.
  • the master ONU includes channels (virtual channels) corresponding to each slave ONU, and the status of these channels is variable (it can be considered that there are “indicators" on the channels to indicate whether the channels are on), and the master ONU is based on
  • the status of the path determines the target of the OLT's management message, and processes the management message directly when the target is itself, and forwards (transparently transmits) it to the corresponding slave ONU when the target is a slave ONU; therefore, the management message can be "passed through" directly.
  • the master ONU and OLT are equivalent to directly sending management messages to the slave ONU, and the slave ONU is equivalent to directly receiving the management messages, so the OLT controls the slave ONU; at the same time, the format and corresponding products of the management messages (such as messages)
  • the software and hardware do not need to be changed, it is easy to implement, and there are no compatibility issues.
  • the method before sending the management message to the main ONU, the method further includes: step S100, sending a first channel control message to the main ONU.
  • the first path control message is used to control the first path to be in a conductive state.
  • the master ONU includes a management entity ME corresponding to each slave ONU to which it is connected; the first channel control message includes a first ME identifier; the first ME identifier is the ME identifier of the ME corresponding to the first slave ONU. .
  • the management message and the first channel control message are both sent from the OLT to the main ONU based on the OMCI protocol, that is, they all belong to "OMCI messages", and the OMCI protocol defines ME (ME, Managed entity)
  • ME ME, Managed entity
  • the concept is that the OMCI message can carry the ME identifier (ME identifier), and each ME identifier is used to indicate the information of a corresponding ME.
  • the corresponding ME (Sub ONU Control ME) can be set for each slave ONU in the main ONU, and the OLT can add the waiting information in the first channel control message sent to the main ONU.
  • the master ONU when the master ONU receives an OMCI message, if the message does not contain the ME identifier of any sub-ONU, it will consider it to be a management message and process or forward it to the slave ONU according to the path status; and if the message contains a sub-ONU
  • the ME identifier of the ME is considered to be the first channel control message, and the first channel corresponding to the ME class value is opened.
  • the ME identifier may include two parts: ME class (ME class) and ME instance (ME instance).
  • ME class represents the classification of the ME
  • ME instance represents the specific instance of the ME. Therefore, the ME class of the ME identifiers corresponding to all slave ONUs are the same (because the types are all slave ONUs), but the ME instances of the ME identifiers corresponding to different slave ONUs can be different. Therefore, the master ONU can specifically determine whether it is a first channel control message based on whether there is a ME class corresponding to the slave ONU in the message, and then determine which slave ONU it targets (that is, which channel it wants to control) based on the ME instance in the message. .
  • the method further includes: sending a second channel control message to the main ONU; the second channel control message is used to control the first channel to be in a closed state.
  • embodiments of the present disclosure provide a method for managing slave ONUs, which is applied to the master ONU.
  • the master ONU is connected to the OLT.
  • the master ONU is also connected to one or more slave ONUs.
  • the master ONU includes one or more channels, one or more Each channel corresponds to one or more slave ONUs; referring to Figure 4, the method includes the following steps S201 to S204.
  • step S201 a management message from the OLT is received.
  • the management message is a message used to manage the ONU.
  • step S202 when the first path is in the conductive state, a management message is sent to the first slave ONU.
  • the first channel is one of one or more channels
  • the first slave ONU is a slave ONU corresponding to the first channel
  • step S203 a feedback message sent from a first slave ONU is received, where the feedback message is a first feedback message.
  • step S204 the feedback message is sent to the OLT.
  • the method for managing the slave ONU further includes: step S205, when one or more channels are in a closed state, sending a feedback message to the OLT, where the feedback message is Second feedback message.
  • the master ONU includes channels (virtual channels) corresponding to each slave ONU, and the status of these channels is variable (it can be considered that there are “indicators" on the channels to indicate whether the channels are on), and the master ONU is based on
  • the status of the path is correct Determine the target of the OLT's management message, and directly process the management message when the target is itself, and forward (transparently transmit) it to the corresponding slave ONU when the target is the slave ONU; therefore, the management message can directly "pass through" the master ONU,
  • the OLT is equivalent to directly sending management messages to the slave ONU, and the slave ONU is equivalent to directly receiving the management messages, so the OLT controls the slave ONU.
  • the format of the management messages (such as messages) and the software and hardware of the corresponding products are No need to change, easy to implement, no compatibility issues.
  • the method of managing the slave ONU before receiving the management message from the OLT, the method of managing the slave ONU further includes:
  • the master ONU includes a ME corresponding to each slave ONU to which it is connected; receiving the first channel control message sent by the master ONU, and controlling the first channel to be in a conductive state according to the first channel control message includes: when When the message received from the OLT includes the ME identifier of the ME corresponding to the slave ONU, determine the message as the first channel control message, determine the ME identifier as the first ME identifier, and determine the slave ONU corresponding to the first ME identifier as the first slave ONU. , controlling the first path to be in a conductive state.
  • the method for managing the slave ONU further includes: receiving a second channel control message sent to the master ONU, and controlling the first channel to be in a closed state according to the second channel control message.
  • the OLT is connected to the main ONU (Main ONU) through ODN, and the LAN side PON port of the main ONU is also connected to each slave ONU (Sub ONU) through ODN.
  • the main ONU has a corresponding OMCI node
  • each slave ONU has a The corresponding OMCI node.
  • the OMCI node of the master ONU is connected to a logical "indicator light", and the indicator light is connected to the OMCI node of each slave ONU through multiple virtual paths, and the indicator light on each path indicates whether the path is connected.
  • the solid circle represents the green light, that is, the path is in the on state
  • the hollow circle represents the red light, that is, the path is in the off state.
  • the OLT When the optical network is initialized, the OLT creates a Sub ONU Control ME in the main ONU for each slave ONU to manage whether the path of the corresponding slave ONU is open.
  • the OLT when the OLT wants to manage the main ONU, it sends a management message to the main ONU. Since all channels are in the off state (all red lights), the main ONU processes the management message and is managed and controlled by the OLT.
  • the OLT when the OLT wants to manage a certain slave ONU x, the OLT sends a channel control message to the master ONU, which carries the ME identifier of the channel of the slave ONU The corresponding path is on; the OLT sends management messages to the main ONU, so at this time only the path corresponding to the slave ONU ONU.
  • the management message "penetrates" the main ONU and interacts directly between the OLT and the slave ONU, and the OLT starts to manage the corresponding slave ONU.
  • the OLT completes the management of the slave ONU and switches the signal lights of all channels to red again. Referring to Figure 6, it returns to the stage where the OLT manages the master ONU and waits for the next time the OLT manages the slave ONU.
  • the specific steps from ONU to first certification and online can be as follows:
  • the master ONU self-creates UNI PON interface ME, which represents the management entity of the PON port on the LAN side of the master ONU. It is used by the OLT to manage the status of the PON port on the LAN side of the master ONU and obtain the registration information of the slave ONU under this PON port.
  • the master ONU reports the creation information to the OLT, which is equivalent to informing the OLT that this ONU is the master ONU with FTTR capability (can be connected to the slave ONU).
  • Power on the slave ONU connect to the LAN side PON port of the master ONU, and send the SN (serial number) and Password (password) to try to go online.
  • the master ONU writes the received SN and Password of the slave ONU into the Unregistered (unregistered) Sub ONU attribute of the UNI PON interface ME, and sends the OMCI AVC (Attribute value change) message of this attribute to the OLT. To notify the OLT that a new slave ONU comes online.
  • OMCI AVC tribute value change
  • the OLT After receiving the AVC message, the OLT issues the OMCI query message of the UNI PON interface ME, queries the specific content of the attribute Unregistered Sub ONU, and obtains the SN and Password of the slave ONU.
  • the OLT issues an OMCI creation message, creates a Sub ONU Control ME on the master ONU, and writes the corresponding ME attributes from the SN and Password of the slave ONU so that the master ONU can associate this ME with the actual slave ONU. After the master ONU associates this ME with the slave ONU, delete the SN and Password from the Unregistered Sub ONU attribute of the UNI PON interface ME.
  • the OLT issues the OMCI setting message and writes the authentication results of the SN and Password of the Sub ONU into the Credentials status attribute of the Sub ONU Control ME.
  • the master ONU keeps the slave ONU online.
  • the OLT is preparing to activate the Internet service for a slave ONU (slave ONU x). First, confirm the online status of the slave ONU x. That is, the OLT issues an OMCI query message (management message) to query the Sub ONU Control ME corresponding to the slave ONU x. Operational state attribute.
  • step B2.2 If the result is enable, it means that slave ONU x is online and can activate the service. Continue to the following step B3.
  • the OLT issues an OMCI setting message (path control message) and sets the Action register attribute of the Sub ONU Control ME associated with ONU x to enter.
  • the master ONU receives this message and sets the OMCI indicator light to the slave ONU
  • the path of x is set to green.
  • the OLT issues a management message for activating the Internet access service.
  • the management message is forwarded by the master ONU to the slave ONU x.
  • all feedback messages on the management messages from the slave ONU x are forwarded by the master ONU to the OLT.
  • the OLT delivers the OMCI setting message (path control message).
  • the Action register attribute of the Sub ONU Control ME associated with ONU x is set to leave.
  • the master ONU sets the OMCI indicator light to the slave ONU.
  • the path of x is set to red light.
  • the specific steps for the OLT to diagnose the optical power between the master/slave ONU can be as follows:
  • OLT first confirms whether slave ONU x is online (same as steps B1 and B2 above).
  • the OLT issues the OMCI query message (management message) of the Receive optical level attribute of the Sub ONU Control ME associated with ONU x optical power, and the optical power sent by the LAN side PON port of the main ONU.
  • the OLT issues an OMCI setting message (passage control message), and sets the Action register attribute of the Sub ONU Control ME associated with ONU x to enter. After receiving this configuration, the main ONU turns the OMCI indicator Turn green on the path from ONU x.
  • the OLT issues an OMCI query message (management message) to query the Optical signal level attribute and Transmit optical level attribute of ANI-G ME (defined in the ITU-T G.988 standard); this management message is forwarded by the master ONU to the slave ONU x processing, the feedback message from ONU
  • the OLT query is completed, the OMCI setting message (passage control message) is issued, the Action register attribute of the Sub ONU Control ME associated with ONU x is set to leave, and the master ONU sets the OMCI indicator light on the slave ONU x The access light is set to red.
  • the OLT has obtained the LAN-side PON port of the master ONU and collected the receive and receive optical power information from the PON port of the slave ONU, and can diagnose the optical path status.
  • an embodiment of the present disclosure provides an OLT, which is connected to a master ONU, and the master ONU is also connected to one or more slave ONUs.
  • the OLT includes one or more memories and one or more processors; the memory stores There is a computer program that can be executed by the processor. When the computer program is executed by the processor, it can implement any method of managing the slave ONU in the embodiments of the present disclosure.
  • an embodiment of the present disclosure provides a master ONU, which is connected to an OLT.
  • the master ONU is also connected to one or more slave ONUs.
  • the master ONU includes one or more memories and one or more processors;
  • the memory stores a computer program that can be executed by the processor. When the computer program is executed by the processor, it can implement any method of managing the slave ONU in the embodiments of the present disclosure.
  • the processor is a device with data processing capabilities, including but not limited to a central processing unit (CPU), etc.
  • the memory is a device with data storage capabilities, including but not limited to random access memory (RAM, More specifically, such as SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory (FLASH);
  • the I/O interface read-write interface
  • It can realize information interaction between the memory and the processor, including but not limited to the data bus (Bus), etc.
  • an embodiment of the present disclosure provides a storage medium on which a computer program is stored.
  • the computer program is executed by a processor, any method for managing a slave ONU in the embodiment of the present disclosure is implemented.
  • the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may consist of several physical components. Components execute cooperatively.
  • Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit (CPU), a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as ASIC.
  • a processor such as a central processing unit (CPU), a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as ASIC.
  • Such software may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media).
  • computer storage media includes volatile and nonvolatile media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. removable, removable and non-removable media.
  • Computer storage media includes but is not limited to random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory (FLASH) or other disks Memory; Compact Disk Read Only (CD-ROM), Digital Versatile Disk (DVD), or other optical disk storage; Magnetic cartridges, tapes, magnetic disk storage, or other magnetic storage; Any other device that can be used to store the desired information and that can be accessed by a computer medium. Additionally, it is known to those of ordinary skill in the art that communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .
  • RAM random access memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • FLASH Compact Disk Read Only
  • CD-ROM Compact Disk Read Only
  • DVD Digital Versatile Disk
  • Communication media typically
  • Example embodiments have been disclosed, and although specific terms are employed, they are used and should be interpreted in a general illustrative sense only and not for purpose of limitation. In some instances, it will be apparent to those skilled in the art that features, characteristics and/or elements described in connection with a particular embodiment may be used alone, or may be used in conjunction with other embodiments, unless expressly stated otherwise. Features and/or components are used in combination. Accordingly, it will be understood by those skilled in the art that various changes in form and details may be made without departing from the scope of the present disclosure as set forth in the appended claims.

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Abstract

本公开提供了一种管理从光网络单元ONU的方法，应用于光线路终端OLT，所述OLT连接主ONU，所述主ONU还连接一个或多个从ONU；所述方法包括：向所述主ONU发送管理消息；所述管理消息为用于对ONU进行管理的消息，所述主ONU包括一个或多个通路，所述一个或多个通路与所述一个或多个从ONU一一对应；接收所述主ONU发送的反馈消息，所述反馈消息为第一反馈消息或第二反馈消息；当所述反馈消息为第一反馈消息时，所述反馈消息由第一从ONU产生，所述第一从ONU为所述一个或多个从ONU中的一个，所述第一从ONU对应的第一通路为导通状态；当所述反馈消息为第二反馈消息时，所述反馈消息由所述主ONU产生，所述一个或多个通路为关闭状态。本公开还提供了一种用于主ONU的管理从ONU的方法、光线路终端、主光网络单元。

Description

管理从光网络单元的方法、光线路终端、主光网络单元
相关申请的交叉引用
本申请要求于2022年7月20日提交的中国专利申请No.202210858652.3的优先权，该中国专利申请的内容通过引用的方式整体合并于此。
技术领域
本公开涉及光网络技术领域，特别涉及一种管理从光网络单元的方法、光线路终端、主光网络单元、存储介质。
背景技术
随着光纤入屋(FTTR，Fiber to The Room)等技术的应用，在光网络***中，与光线路终端(OLT，Optical Line Termination)连接的光网络单元(ONU，Optical Network Unit)下可能再连接其它的ONU，即主ONU(Main ONU)下连接从ONU(Sub ONU)。
但相关技术中，OLT无法直接管理这些从ONU，从而给光网络的管理带来不便。
发明内容
本公开提供一种管理从光网络单元的方法、光线路终端、主光网络单元、存储介质。
第一方面，本公开实施例提供一种管理从光网络单元ONU的方法，应用于光线路终端OLT，所述OLT连接主ONU，所述主ONU还连接一个或多个从ONU；所述方法包括：向所述主ONU发送管理消息；所述管理消息为用于对ONU进行管理的消息，所述主ONU包括一个或多个通路，所述一个或多个通路与所述一个或多个从ONU一一对应；接收所述主ONU发送的反馈消息，所述反馈消息为第一反馈消息或第二反馈消息；当所述反馈消息为第一反馈消息时，所述反馈消息由第一从ONU产生，所述第一从ONU为所述一个或多个从ONU中的一个，所述第一从ONU对应的第一通路为导通状态；当所述反馈消息为第二反馈消息时，所述反馈消息由所述主ONU产生，所述一个或多个通路为关闭状态。
第二方面，本公开实施例提供一种管理从ONU的方法，应用于主ONU，所述主ONU连接OLT，所述主ONU还连接一个或多个从ONU，所述主ONU包括一个或多个通路，所述一个或多个通路与所述一个或多个从ONU一一对应，所述方法包括：接收来自所述OLT的管理消息；所述管理消息为用于对ONU进行管理的消息；当第一通路为导通状态时，向第一从ONU发送所述管理消息，所述第一通路为所述一个或多个通路中的一个，所述第一从ONU为与所述第一通路对应的从ONU；接收所述第一从ONU发送的反馈消息，所述反馈消息为第一反馈消息；向所述OLT发送所述反馈消息。
第三方面，本公开实施例提供一种OLT，所述OLT连接主ONU，所述主ONU还连接一个或多个从ONU，所述OLT包括一个或多个存储器、一个或多个处理器；所述存储器存储有能被所述处理器执行的计算机程序，所述计算机程序被所述处理器执行时能实现本公 开实施例的任意一种管理从ONU的方法。
第四方面，本公开实施例提供一种主ONU，其与OLT连接，所述主ONU还连接一个或多个从ONU，所述主ONU包括一个或多个存储器、一个或多个处理器；所述存储器存储有能被所述处理器执行的计算机程序，所述计算机程序被所述处理器执行时能实现本公开实施例的任意一种管理从ONU的方法。
第五方面，本公开实施例提供一种存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现本公开实施例的任意一种管理从ONU的方法。
附图说明
在本公开实施例的附图中：
图1为本公开实施例提供的管理从ONU的方法所适用的光网络***的组成框图；
图2为本公开实施例提供的一种管理从ONU的方法的流程图；
图3为本公开实施例提供的另一种管理从ONU的方法的流程图；
图4为本公开实施例提供的另一种管理从ONU的方法的流程图；
图5为本公开实施例提供的另一种管理从ONU的方法的流程图；
图6为本公开实施例提供的另一种管理从ONU的方法中一个状态的管理消息传递示意图；
图7为本公开实施例提供的另一种管理从ONU的方法中另一个状态的管理消息传递示意图；
图8为本公开实施例提供的一种OLT的组成框图；
图9为本公开实施例提供的一种主ONU的组成框图；
图10为本公开实施例提供的一种存储介质的组成框图。
具体实施方式
为使本领域的技术人员更好地理解本公开的技术方案，下面结合附图对本公开实施例提供的管理从光网络单元的方法、光线路终端、主光网络单元进行详细描述。
在下文中将参考附图更充分地描述本公开，但是所示的实施例可以以不同形式来体现，且本公开不应当被解释为限于以下阐述的实施例。反之，提供这些实施例的目的在于使本公开透彻和完整，并将使本领域技术人员充分理解本公开的范围。
本公开实施例的附图用来提供对本公开实施例的进一步理解，并且构成说明书的一部分，与详细实施例一起用于解释本公开，并不构成对本公开的限制。通过参考附图对详细实施例进行描述，以上和其它特征和优点对本领域技术人员将变得更加显而易见。
本公开可借助本公开的理想示意图而参考平面图和/或截面图进行描述。因此，可根据制造技术和/或容限来修改示例图示。
在不冲突的情况下，本公开各实施例及实施例中的各特征可相互组合。
本公开所使用的术语仅用于描述特定实施例，且不意欲限制本公开。如本公开所使用的术语“和/或”包括一个或多个相关列举条目的任何和所有组合。如本公开所使用的单数形式“一个”和“该”也意欲包括复数形式，除非上下文另外清楚指出。如本公开所使用的术语“包括”、“由……制成”，指定存在所述特征、整体、步骤、操作、元件和 /或组件，但不排除存在或添加一个或多个其它特征、整体、步骤、操作、元件、组件和/或其群组。
除非另外限定，否则本公开所用的所有术语(包括技术和科学术语)的含义与本领域普通技术人员通常理解的含义相同。还将理解，诸如那些在常用字典中限定的那些术语应当被解释为具有与其在相关技术以及本公开的背景下的含义一致的含义，且将不解释为具有理想化或过度形式上的含义，除非本公开明确如此限定。
本公开不限于附图中所示的实施例，而是包括基于制造工艺而形成的配置的修改。因此，附图中例示的区具有示意性属性，并且图中所示区的形状例示了元件的区的具体形状，但并不是旨在限制性的。
千兆无源光网络(GPON，Gigabit-Capable Passive Optical Networks)技术是一种基于ITU-T G.9xx协议的无源光网络接入技术。
参照图1，GPON***可包括OLT和ONU，OLT连接ONU，而ITU-T G.988协议是ONU管理与控制接口(OMCI，ONU management and control interface)的国际通行标准，OMCI协议是OLT管理的必选协议，OLT可基于该协议管理与其连接的ONU。
随着技术的发展，光网络的基础设施水平也在不断提升，且对网络的带宽、时延、抖动等的要求也越来越高。例如，FTTR技术要求将光纤铺设至每一个房间，故可参照图1，在直接连接OLT的主ONU(Main ONU)下再连接位于各个房间的从ONU(Sub ONU)，以与家庭网关互连，最大可能的保障在线教育、居家办公、家庭娱乐等业务应用的高质量发展。
但是，在相关技术中，OLT只能实现对直接连接的主ONU的管理控制，而无法实现对下级从ONU的管理。
第一方面，本公开实施例提供一种管理从光网络单元ONU的方法，该方法用于光线路终端OLT，OLT连接主ONU，主ONU还连接一个或多个从ONU。参照图2，该方法包括以下步骤S101至S102。
在步骤S101中，向主ONU发送管理消息。
管理消息为用于对ONU进行管理的消息，主ONU包括一个或多个通路，一个或多个通路与一个或多个从ONU一一对应。
在步骤S102中，接收主ONU发送的反馈消息。
其中，反馈消息为第一反馈消息或第二反馈消息；当反馈消息为第一反馈消息时，表明反馈消息由一个或多个从ONU中的第一从ONU产生，且第一从ONU对应的第一通路为导通状态；当反馈消息为第二反馈消息时，表明反馈消息由主ONU产生，且所述一个或多个通路为关闭状态。
本公开实施例中，主ONU包括对应各从ONU的通路(虚拟的通路)，且这些通路的状态可变(可认为通路上有“指示灯”，指示通路是否导通)，而主ONU根据通路的状态确定OLT的管理消息的目标，并在目标是自身时直接处理管理消息，而在目标是从ONU时将其转发(透传)给相应从ONU；故管理消息可直接“穿过”主ONU，OLT相当于直接向从ONU发送管理消息，而从ONU相当于直接收到管理消息，故实现了OLT对从ONU的控制；同时，其中管理消息(如报文)的格式和相应产品的软硬件均可不必改变，容易实现，没有兼容性问题。
在一些实施例中，参照图3，在向主ONU发送管理消息之前，所述方法还包括：步骤S100，向主ONU发送第一通路控制消息。
其中，第一通路控制消息用于控制第一通路为导通状态。
在一些实施例中，主ONU包括与其所连接的每个从ONU分别对应的管理实体ME；第一通路控制消息包括第一ME标识；第一ME标识为第一从ONU对应的ME的ME标识。
本公开实施例中，管理消息和第一通路控制消息均是基于OMCI协议从OLT发送至主ONU的，即它们均属于“OMCI消息”，而OMCI协议中定义有ME(ME，Managed entity)的概念，即OMCI消息中可携带有ME标识(ME identifier)，每个ME标识用于标明一个对应的ME的信息。
作为本公开实施例的一种方式，可在主ONU中，为每个从ONU设置对应的ME(Sub ONU Control ME)，而OLT可在向主ONU发送的第一通路控制消息中，加入待改变的通路对应的Sub ONU Control ME的ME标识；由此，主ONU可根据消息中是否有对应某个Sub ONU Control ME的ME标识来判断其是否为第一通路控制消息，以及确定该消息所要控制的通路。即，主ONU接收到OMCI消息，若消息中没有任何子ONU的ME的ME标识，则认为其是管理消息，并按照通路状态将其处理或转发给从ONU；而若消息中有某个子ONU的ME的ME标识，则认为其是第一通路控制消息，并打开ME class值对应的第一通路。
在一些实施例中，ME标识可包括ME类型(ME class)和ME实例(ME instance)两部分，ME class表示该ME的分类，而ME instance则表示ME的具体实例。由此，所有从ONU对应的ME标识的ME class均相同(因为类型都是从ONU)，但是不同从ONU对应的ME标识的ME instance可不同。由此，主ONU具体可根据消息中是否存在对应从ONU的ME class确定其是否为第一通路控制消息，再根据消息中的ME instance，确定其针对哪个从ONU(即要控制那条通路)。
在一些实施例中，所述方法还包括：向主ONU发送第二通路控制消息；第二通路控制消息用于控制第一通路为关闭状态。
第二方面，本公开实施例提供一种管理从ONU的方法，应用于主ONU，主ONU连接OLT，主ONU还连接一个或多个从ONU，主ONU包括一个或多个通路，一个或多个通路与一个或多个从ONU一一对应；参照图4，方法包括以下步骤S201至S204。
在步骤S201中，接收来自OLT的管理消息。
其中，管理消息为用于对ONU进行管理的消息。
在步骤S202中，当第一通路为导通状态时，向第一从ONU发送管理消息。
其中，第一通路为一个或多个通路中的一个，第一从ONU为与第一通路对应的从ONU。
在步骤S203中，接收第一从ONU发送的反馈消息，所述反馈消息为第一反馈消息。
在步骤S204中，向OLT发送所述反馈消息。
在一些实施例中，在接收来自OLT的管理消息之后，所述管理从ONU的方法还包括：步骤S205，当一个或多个通路为关闭状态时，向OLT发送反馈消息，所述反馈消息为第二反馈消息。
本公开实施例中，主ONU包括对应各从ONU的通路(虚拟的通路)，且这些通路的状态可变(可认为通路上有“指示灯”，指示通路是否导通)，而主ONU根据通路的状态确 定OLT的管理消息的目标，并在目标是自身时直接处理管理消息，而在目标是从ONU时将其转发(透传)给相应从ONU；故管理消息可直接“穿过”主ONU，OLT相当于直接向从ONU发送管理消息，而从ONU相当于直接收到管理消息，故实现了OLT对从ONU的控制；同时，其中管理消息(如报文)的格式和相应产品的软硬件均可不必改变，容易实现，没有兼容性问题。
在一些实施例中，在接收来自OLT的管理消息之前，所述管理从ONU的方法还包括：
接收主ONU发送的第一通路控制消息，根据第一通路控制消息控制第一通路为导通状态。
在一些实施例中，主ONU包括与其所连接的每个从ONU分别对应的ME；接收主ONU发送的第一通路控制消息，根据第一通路控制消息控制第一通路为导通状态包括：当接收到的来自OLT的消息包括从ONU对应的ME的ME标识时，确定消息为第一通路控制消息，确定ME标识为第一ME标识，确定第一ME标识对应的从ONU为第一从ONU，控制第一通路为导通状态。
在一些实施例中，所述管理从ONU的方法还包括：接收向主ONU发送的第二通路控制消息，根据第二通路控制消息控制第一通路为关闭状态。
以下对本公开实施例的管理从ONU的方法的具体例子进行示例性的介绍。
参照图6、图7，OLT通过ODN连接主ONU(Main ONU)，而主ONU的LAN侧PON口还通过ODN连接各从ONU(Sub ONU)，主ONU有对应的OMCI节点，各从ONU有对应的OMCI节点。其中，主ONU的OMCI节点连接逻辑上的“指示灯”，指示灯再通过多个虚拟的通路分别连接各从ONU的OMCI节点，且每个通路上的指示灯指示该通路是否导通。图中，以实心圆圈代表绿灯，即通路为导通状态，而以空心圆圈代表红灯，即通路为关断状态。
光网络初始化时，OLT为每个从ONU在主ONU中创建一个Sub ONU Control ME，用以管理相应从ONU的通路是否导通。
参照图6，OLT要管理主ONU时，向主ONU发送管理消息，因所有通路均为关断状态(均为红灯)，故主ONU处理该管理消息，受OLT管理、控制。
参照图7，当OLT要管理某个从ONU x时，OLT向主ONU发送通路控制消息，其中携带从ONU x的通路的ME的ME标识，从而主ONU识别其为通路控制消息，根据其控制相应通路导通；OLT向主ONU发送管理消息，因此时只有对应该从ONU x的通路为导通状态(为绿灯)，故主ONU将收到的管理消息原样从相应通路发出至相应的从ONU。由此，管理消息“穿透”主ONU，在OLT与从ONU间直接交互，OLT开始管理相应从ONU。
OLT完成对该从ONU的管理，再次将所有通路的信号灯的切换为红灯，参照图6，又回到OLT对主ONU进行管理的阶段，等待下一次OLT对从ONU的管理。
例如，从ONU首次认证上线的具体步骤可如下：
A1、主ONU自创建UNI PON interface ME，其代表主ONU LAN侧PON口的管理实体，用于OLT管理主ONU LAN侧PON口状态以及获取此PON口下从ONU的注册信息。主ONU将创建信息上报给OLT，相当于告知OLT本ONU为具备FTTR能力(可下挂从ONU)的主ONU。
A2、从ONU上电，连接主ONU的LAN侧PON口，发送SN(序列号)与Password(密码)尝试上线。
A3、主ONU将收到的从ONU的SN与Password写入UNI PON interface ME的Unregistered(未注册)Sub ONU属性，并发送此属性的OMCI AVC(Attribute value change，属性值变化)消息到OLT，以通知OLT有新从ONU上线。
A4、OLT收到AVC消息后，下发UNI PON interface ME的OMCI查询消息，查询属性Unregistered Sub ONU的具体内容，得到从ONU的SN与Password。
A5、OLT下发OMCI创建消息，在主ONU上创建Sub ONU Control ME，同时将从ONU的SN与Password写入对应的ME属性，以便主ONU将此ME与实际的从ONU关联起来。主ONU关联此ME与从ONU后，将SN与Password从UNI PON interface ME的Unregistered Sub ONU属性中删除。
A6、OLT下发OMCI设置消息，将对从ONU的SN与Password的认证结果，写入Sub ONU Control ME的Credentials status属性中。
A7、根据认证结果的不同，分别执行以下步骤：
A7.1、若认证结果为失败，主ONU将从ONU离线。
A7.2、若认证结果为成功，主ONU保持从ONU的在线状态。
例如，从ONU开通上网业务的具体步骤可如下：
B1、OLT准备为某个从ONU(从ONU x)开通上网业务，首先确认从ONU x的在线状态，即OLT下发OMCI查询消息(管理消息)，查询从ONU x对应的Sub ONU Control ME的Operational state属性。
B2、根据结果的不同，分别执行以下步骤：
B2.1、若结果为disable，说明从ONU x不在线，OLT放弃本次管理，等待代表从ONU x上线的AVC消息后继续进行以下步骤B3。
B2.2、若结果为enable，说明从ONU x在线，可进行业务开通，继续进行以下步骤B3。
B3、参照图7，OLT下发OMCI设置消息(通路控制消息)，将从ONU x关联的Sub ONU Control ME的Action register属性设置为enter，主ONU收到此消息，将OMCI指示灯对从ONU x的通路置为绿灯。
B4、OLT下发开通上网业务的管理消息，该管理消息由主ONU转发到从ONU x，同时从ONU x所有的对管理消息的反馈消息由主ONU全部转发给OLT。
B5、业务下发完成，参照图6，OLT下发OMCI设置消息(通路控制消息)，将从ONU x关联的Sub ONU Control ME的Action register属性设置为leave，主ONU将OMCI指示灯对从ONU x的通路置为红灯。
例如，OLT诊断主/从ONU间光功率的具体步骤可如下：
C1、OLT首先确认从ONU x是否在线(同以上步骤B1和B2)。
C2、OLT下发从ONU x关联的Sub ONU Control ME的Receive optical level属性以及UNI PON interface ME的Transmit optical level属性的OMCI查询消息(管理消息)，分别对应主ONU的LAN侧PON口接收从ONU x的光功率，以及主ONU的LAN侧PON口发送的光功率。
C3、参照图7，OLT下发OMCI设置消息(通路控制消息)，将从ONU x关联的Sub ONU Control ME的Action register属性设置为enter，主ONU收到此配置，将OMCI指示灯 对从ONU x的通路置为绿灯。
C4、OLT下发OMCI查询消息(管理消息)，查询ANI-G ME(定义于ITU-T G.988标准)的Optical signal level属性以及Transmit optical level属性；此管理消息由主ONU转发给从ONU x处理，从ONU x对管理消息回复的反馈消息由主ONU转发到OLT；OLT获得了从ONU x PON口的收发光功率。
C5、参照图6，OLT查询完成，下发OMCI设置消息(通路控制消息)，将从ONU x关联的Sub ONU Control ME的Action register属性设置为leave，主ONU将OMCI指示灯对从ONU x的通路置为红灯。
C6、至此，OLT已经查询得到了主ONU的LAN侧PON口和从ONU的PON口收集收发光功率信息，可以诊断光路状态。
第三方面，参照图8，本公开实施例提供一种OLT，其连接主ONU，主ONU还连接一个或多个从ONU，OLT包括一个或多个存储器、一个或多个处理器；存储器存储有能被处理器执行的计算机程序，计算机程序被处理器执行时能实现本公开实施例的任意一种管理从ONU的方法。
第四方面，参照图9，本公开实施例提供一种主ONU，其与OLT连接，主ONU还连接一个或多个从ONU，主ONU包括一个或多个存储器、一个或多个处理器；存储器存储有能被处理器执行的计算机程序，计算机程序被处理器执行时能实现本公开实施例的任意一种管理从ONU的方法。
本公开实施例中，处理器为具有数据处理能力的器件，其包括但不限于中央处理器(CPU)等；存储器为具有数据存储能力的器件，其包括但不限于随机存取存储器(RAM，更具体如SDRAM、DDR等)、只读存储器(ROM)、带电可擦可编程只读存储器(EEPROM)、闪存(FLASH)；I/O接口(读写接口)连接在处理器与存储器间，能实现存储器与处理器的信息交互，其包括但不限于数据总线(Bus)等。
第五方面，参照图10，本公开实施例提供一种存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现本公开实施例的任意一种管理从ONU的方法。
本领域普通技术人员可以理解，上文中所公开的全部或某些步骤、***、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。
在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。
某些物理组件或所有物理组件可以被实施为由处理器，如中央处理器(CPU)、数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其它数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于随机存取存储器(RAM，更具体如SDRAM、DDR等)、只读存储器(ROM)、带电可擦可编程只读存储器(EEPROM)、闪存(FLASH)或其它磁盘 存储器；只读光盘(CD-ROM)、数字多功能盘(DVD)或其它光盘存储器；磁盒、磁带、磁盘存储或其它磁存储器；可以用于存储期望的信息并且可以被计算机访问的任何其它的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其它传输机制之类的调制数据信号中的其它数据，并且可包括任何信息递送介质。
本公开已经公开了示例实施例，并且虽然采用了具体术语，但它们仅用于并仅应当被解释为一般说明性含义，并且不用于限制的目的。在一些实例中，对本领域技术人员显而易见的是，除非另外明确指出，否则可单独使用与特定实施例相结合描述的特征、特性和/或元素，或可与其它实施例相结合描述的特征、特性和/或元件组合使用。因此，本领域技术人员将理解，在不脱离由所附的权利要求阐明的本公开的范围的情况下，可进行各种形式和细节上的改变。

Claims (12)

  1. 一种管理从光网络单元ONU的方法，应用于光线路终端OLT，所述OLT连接主ONU，所述主ONU还连接一个或多个从ONU；所述方法包括：
    向所述主ONU发送管理消息；所述管理消息为用于对ONU进行管理的消息，所述主ONU包括一个或多个通路，所述一个或多个通路与所述一个或多个从ONU一一对应；
    接收所述主ONU发送的反馈消息，所述反馈消息为第一反馈消息或第二反馈消息；
    当所述反馈消息为第一反馈消息时，所述反馈消息由第一从ONU产生，所述第一从ONU为所述一个或多个从ONU中的一个，所述第一从ONU对应的第一通路为导通状态；
    当所述反馈消息为第二反馈消息时，所述反馈消息由所述主ONU产生，所述一个或多个通路为关闭状态。
  2. 根据权利要求1所述的方法，其中，在所述向所述主ONU发送管理消息之前，所述方法还包括：
    向所述主ONU发送第一通路控制消息；所述第一通路控制消息用于控制所述第一通路为导通状态。
  3. 根据权利要求2所述的方法，其中，所述主ONU包括与其所连接的每个所述从ONU分别对应的管理实体ME；
    所述第一通路控制消息包括第一ME标识；所述第一ME标识为所述第一从ONU对应的ME的ME标识。
  4. 根据权利要求1所述的方法，其中，所述方法还包括：
    向所述主ONU发送第二通路控制消息；所述第二通路控制消息用于控制所述第一通路为关闭状态。
  5. 一种管理从ONU的方法，应用于主ONU，所述主ONU连接OLT，所述主ONU还连接一个或多个从ONU，所述主ONU包括一个或多个通路，所述一个或多个通路与所述一个或多个从ONU一一对应；所述方法包括：
    接收来自所述OLT的管理消息；所述管理消息为用于对ONU进行管理的消息；
    当第一通路为导通状态时，向第一从ONU发送所述管理消息；所述第一通路为所述一个或多个通路中的一个，所述第一从ONU为与所述第一通路对应的从ONU；
    接收所述第一从ONU发送的反馈消息，所述反馈消息为第一反馈消息；以及
    向所述OLT发送所述反馈消息。
  6. 根据权利要求5所述的方法，其中，在所述接收来自所述OLT的管理消息之后，所述方法还包括：
    当所述一个或多个通路为关闭状态时，向所述OLT发送反馈消息，所述反馈消息为 第二反馈消息。
  7. 根据权利要求5所述的方法，其中，在所述接收来自所述OLT的管理消息之前，所述方法还包括：
    接收所述主ONU发送的第一通路控制消息，根据所述第一通路控制消息控制所述第一通路为导通状态。
  8. 根据权利要求7所述的方法，其中，所述主ONU包括与其所连接的每个所述从ONU分别对应的ME；所述接收所述主ONU发送的第一通路控制消息，根据所述第一通路控制消息控制所述第一通路为导通状态包括：
    当接收到的来自所述OLT的消息包括所述从ONU对应的ME的ME标识时，确定所述消息为第一通路控制消息，确定所述ME标识为第一ME标识，确定所述第一ME标识对应的从ONU为所述第一从ONU，控制所述第一通路为导通状态。
  9. 根据权利要求5所述的方法，还包括：
    接收向所述主ONU发送的第二通路控制消息，根据所述第二通路控制消息控制所述第一通路为关闭状态。
  10. 一种OLT，其连接主ONU，所述主ONU还连接一个或多个从ONU，所述OLT包括一个或多个存储器、一个或多个处理器；所述存储器存储有能被所述处理器执行的计算机程序，所述计算机程序被所述处理器执行时能实现权利要求1至4中任意一项所述的管理从ONU的方法。
  11. 一种主ONU，其与OLT连接，所述主ONU还连接一个或多个从ONU，所述主ONU包括一个或多个存储器、一个或多个处理器；所述存储器存储有能被所述处理器执行的计算机程序，所述计算机程序被所述处理器执行时能实现权利要求5至9中任意一项所述的管理从ONU的方法。
  12. 一种存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1至9中任意一项所述的管理从ONU的方法。
PCT/CN2023/108438 2022-07-20 2023-07-20 管理从光网络单元的方法、光线路终端、主光网络单元 WO2024017344A1 (zh)

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KR20100011138A (ko) * 2008-07-24 2010-02-03 주식회사 케이티 가입자 광장치의 운용방법과 이를 이용한 수동 광 분기망
JP2017204782A (ja) * 2016-05-12 2017-11-16 富士通株式会社 Ｐｏｎシステムおよびデータ処理方法
CN114257889A (zh) * 2021-12-22 2022-03-29 中兴通讯股份有限公司 网元管理方法及其***、网元、存储介质

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100011138A (ko) * 2008-07-24 2010-02-03 주식회사 케이티 가입자 광장치의 운용방법과 이를 이용한 수동 광 분기망
JP2017204782A (ja) * 2016-05-12 2017-11-16 富士通株式会社 Ｐｏｎシステムおよびデータ処理方法
CN114257889A (zh) * 2021-12-22 2022-03-29 中兴通讯股份有限公司 网元管理方法及其***、网元、存储介质

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