WO2020007246A1 - 管理onu的方法、olt、onu、系统以及存储介质 - Google Patents

管理onu的方法、olt、onu、系统以及存储介质 Download PDF

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Publication number
WO2020007246A1
WO2020007246A1 PCT/CN2019/093726 CN2019093726W WO2020007246A1 WO 2020007246 A1 WO2020007246 A1 WO 2020007246A1 CN 2019093726 W CN2019093726 W CN 2019093726W WO 2020007246 A1 WO2020007246 A1 WO 2020007246A1
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Prior art keywords
packet
message
packet management
management
onu
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English (en)
French (fr)
Inventor
张阳春
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ZTE Corp
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ZTE Corp
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Priority to PL19830769.6T priority Critical patent/PL3820157T3/pl
Priority to EP19830769.6A priority patent/EP3820157B1/en
Priority to ES19830769T priority patent/ES3032763T3/es
Publication of WO2020007246A1 publication Critical patent/WO2020007246A1/zh
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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • 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
    • H04Q2011/0064—Arbitration, scheduling or medium access control aspects
    • 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
    • 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
    • H04Q2011/0088—Signalling aspects

Definitions

  • the present disclosure relates to, but is not limited to, the field of communication technology.
  • the OLT optical line terminal
  • Stop-and-Wait Stop-and-Wait
  • OAM Operaation Administration
  • a method for managing an ONU including: sending a packet management negotiation message to the ONU according to a packet management message format; and receiving packet management negotiation response information returned by the ONU according to the packet management response message format. And, in response to the successful packet management negotiation, the ONU is included in the packet.
  • an OLT including: a memory, a processor, and a program for managing an ONU stored in the memory and running on the processor; the program for managing the ONU is implemented when the processor executes the program The steps of the method for managing an ONU provided by any embodiment of the present disclosure.
  • a method for managing an ONU including: receiving a packet management negotiation message delivered by an OLT according to a packet management message format; and in response to determining that the ONU supports packet management, creating an ONU for receiving GEM (Port for Passive Optical Network Encapsulation) port of the packet management message; and, according to the packet management response message format, the packet management negotiation response information is returned to the OLT; where the packet management negotiation response information is the packet management negotiation Success message.
  • GEM Port for Passive Optical Network Encapsulation
  • an ONU including: a memory, a processor, and a program for managing the ONU stored on the memory and running on the processor; the program for managing the ONU is used by the processor when executed Steps for implementing the method for managing an ONU provided by any embodiment of the present disclosure.
  • a passive optical fiber network system including an OLT and an ONU; the OLT is configured to: send a packet management negotiation message to the ONU according to a packet management message format; and receive a packet management returned by the ONU Negotiation response information; and, in response to the successful packet management negotiation, the ONU is included in the packet; the ONU is configured to: receive the packet management negotiation message issued by the OLT; and in response to determining that it supports packet management, create a GEM for receiving the packet management message PORT; and returning the packet management negotiation response information to the OLT according to the packet management response message format; wherein the packet management negotiation response information is information that the packet management negotiation is successful.
  • a computer-readable storage medium stores a program for managing the ONU, and the program for managing the ONU is implemented by a processor to implement any embodiment of the present disclosure. Steps of the method of managing ONU.
  • FIG. 1 is a schematic flowchart of a method for managing an ONU according to an embodiment of the present disclosure.
  • FIG. 2 is another schematic flowchart of a method for managing an ONU according to an embodiment of the present disclosure.
  • FIG. 3 is a schematic structural diagram of an OLT according to an embodiment of the present disclosure.
  • FIG. 4 is another schematic flowchart of a method for managing an ONU according to an embodiment of the present disclosure.
  • FIG. 5 is another schematic flowchart of a method for managing an ONU according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of an ONU according to an embodiment of the present disclosure.
  • FIG. 7 is another schematic flowchart of a method for managing an ONU according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a passive optical fiber network system according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a data business model constructed with standard entities according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of a timing of a passive optical fiber network system according to an embodiment of the present disclosure.
  • FIG 11 is a schematic diagram of the GEM header structure in the GTC frame payload defined by the ITU-T G.984.3 standard.
  • the OLT uses a stop-and-wait protocol to manage the ONU; and in addition to a small number of OAM operations using broadcast delivery, all other operations are managed point-to-point.
  • OAM operations using broadcast delivery
  • all other operations are managed point-to-point.
  • a large-scale online such as OLT restart
  • batch activation such as batch ONU new deployment
  • batch system upgrade such as simultaneous upgrade of several ONUs
  • the embodiments of the present disclosure provide a method for managing an ONU, an OLT, an ONU, a passive optical fiber network system, and a computer-readable storage medium to solve the increase in various OAM operations in a PON system and generate system bandwidth and OLT. Problems with extreme loads.
  • an embodiment of the present disclosure provides a method for managing an ONU.
  • the method is used in an OLT and may include steps S11-S13.
  • step S11 the OLT sends a packet management negotiation message to the ONU according to the packet management message format (Group Management Message Type).
  • a supplementary management mode of the current standard system compatibility is considered, and negotiation is performed at the beginning of group management to determine that the system can support group management.
  • the ONU needs to be notified to end or suspend the packet management and enter the standard point-to-point management mode.
  • the group management message format may be a preset group management message format.
  • the packet management message format may be as shown in Table 1.
  • step S12 the OLT receives the packet management negotiation response information returned by the ONU according to the packet management response message format (Group Management Response Message Type).
  • the ONU receives the packet management negotiation message issued by the OLT; if the ONU supports packet management, in order to be able to receive the packet management message issued by the OLT normally in the future, it is necessary to create a packet management message before receiving the response. GEM, and returns the packet management negotiation response information to the OLT according to the packet management response message format, that is, the message that the packet management negotiation is successful. It is conceivable that if the ONU does not support packet management, a message that the packet management negotiation fails may be returned to the OLT.
  • FIG. 11 is a schematic diagram of a GEM header structure in a GTC (GPON Transmission Transmission Convergence Layer) frame payload defined in the ITU-T G.984.3 standard.
  • GTC GPON Transmission Transmission Convergence Layer
  • the packet management response message format may be a preset packet management response message format.
  • the packet management response message format may be as shown in Table 2.
  • step S13 if the packet management negotiation response information returned by the ONU is information that the packet management negotiation is successful, the OLT includes the ONU in the packet.
  • the OLT receives information that the packet management negotiation is successful, the OLT is included in the packet for management, and the ONU included in the packet is sent a packet management message. It is conceivable that if the message that the packet management negotiation fails is received, the ONU is not included in the packet for management.
  • the method may further include steps S14-step S16.
  • step S14 for all ONUs included in the packet, the OLT delivers a packet management message according to the message header format.
  • the OLT when performing group management, the OLT still uses various types of management messages defined by the standard for configuration and delivery.
  • the current standard message header can be modified as shown in Table 3.
  • the upper 4 bits of the Device identifier field in the message header are used to store the Group ID to which the current message belongs (the ID is determined in the group management negotiation). If the various messages received by the ONU carry a valid Group ID, there is no need to immediately respond to the OLT according to the stop-and-wait protocol, but to perform checksum buffering until the end of the packet operation.
  • step S15 the OLT sends a packet management end message to all ONUs included in the packet according to the packet management message format.
  • the ONU included in the packet receives the packet management end message delivered by the OLT; and returns the packet management end response message to the OLT according to the aforementioned packet management response message format.
  • the ONU checks whether a packet management failure message exists in the packet; if a packet management failure message exists in the packet, the packet management failure message is returned to the OLT according to the packet management response message format; otherwise Return a packet management success message to the OLT.
  • the packet management failure message carries the TCI (Transaction Correlation Identity) in the message header format.
  • step S16 the OLT receives the packet management end response message returned by the ONU included in the packet according to the packet management response message format, and performs the process of ending the packet management.
  • the OLT receives the packet management end response message returned by the ONU included in the packet according to the packet management response message format, and performs the process of ending the packet management including: the received packet management end response message is packet management In the case of a success message, the group management is ended; when the received group management end response message is a group management failure message, and the number of TCIs carried in the group management failure message is less than a preset threshold, the point-to-point method is adopted , Re-deliver the group management messages corresponding to TCI one by one; in the case that the received group management end response message is a group management failure message, and the number of TCIs carried in the group management failure message is not less than a preset threshold, according to the point The point-to-point method re-delivers the packet management message in the current packet as a whole.
  • the group management messages corresponding to the TCIs of the failed part are re-issued one by one in a point-to-point manner; if the number of TCIs returned is equal to 15 groups, the point-to-point Method, for all configurations, re-deliver a packet management message to the ONU as a whole.
  • the method for managing ONUs provided by the embodiments of the present disclosure, by including similar management operations of multiple ONUs in the group management, and uniformly issuing group management messages; solving the increase of various OAM operations in the PON system to the system bandwidth and OLT The problem of generating a huge load; thereby reducing the OAM operation amount of the system, saving bandwidth resources, and improving the management performance of the system.
  • an embodiment of the present disclosure further provides an OLT, which may include: a memory 21, a processor 22, and a program that manages the ONU stored on the memory 21 and can run on the processor 22, and the program that manages the ONU is When executed by the processor 22, it may be used to implement the steps of the following method for managing the ONU: sending a packet management negotiation message to the ONU according to the packet management message format; receiving the packet management negotiation response information returned by the ONU according to the packet management response message format; and, In response to the successful packet management negotiation, the ONU is included in the packet.
  • the program for managing the ONU when executed by the processor 22, it is also used to implement the steps of the following method for managing the ONU: according to the message header format, sending a packet management message to all ONUs included in the packet.
  • the program for managing the ONU when executed by the processor 22, it is further used to implement the steps of the following method for managing the ONU: according to the packet management message format, sending a packet management end message to all ONUs included in the packet ; And, receiving any packet management end response message returned by any ONU included in the packet according to the packet management response message format, and performing processing for the end of packet management.
  • the program for managing the ONU when executed by the processor 22, it is further used to implement the steps of the following method for managing the ONU: in response to determining that the packet management end response message is a packet management success message, ending the packet management; responding After determining that the group management end response message is a group management failure message, and the number of TCIs carried in the group management failure message is less than a preset threshold, the group management messages corresponding to the TCI are re-issued one by one in a point-to-point manner; in response to the determination The group management end response message is a group management end response failure message, and the number of TCIs carried in the group management end response failure message is not less than a preset threshold. According to the point-to-point method, all the group management messages in the current group are re-distributed as a whole. .
  • the same management operations of multiple ONUs are included in the group management, and the group management messages are uniformly issued; solving the increase of various OAM operations in the PON system has a great impact on the system bandwidth and the OLT. Load issues; thereby reducing the system's OAM operations, saving bandwidth resources, and improving system management performance.
  • an embodiment of the present disclosure also provides another method for managing an ONU.
  • the method is used in an ONU and may include steps S31-S33.
  • step S31 a packet management negotiation message delivered by the OLT according to the packet management message format is received.
  • a supplementary management mode of the current standard system compatibility is considered, and negotiation is performed at the beginning of group management to determine that the system can support group management.
  • the ONU needs to be notified to end or suspend the packet management and enter the standard point-to-point management mode.
  • the packet management message format may be as shown in Table 1.
  • the value of the Entity class is fixed to 0, and the valid value of the group management group ID number (Group ID) is 1-15.
  • step S32 if the packet management is supported, a GEM PORT for receiving a packet management message is created.
  • step S33 the packet management negotiation response information is returned to the OLT according to the packet management response message format; wherein the packet management negotiation response information is information that the packet management negotiation is successful.
  • the ONU receives the packet management negotiation message issued by the optical line terminal OLT; if the ONU supports packet management, in order to be able to receive the packet management message issued by the OLT normally in the future, it is necessary to create an The GEM PORT of the packet management message, and returns the packet management negotiation response information to the OLT according to the packet management response message format, that is, the information that the packet management negotiation is successful. It is conceivable that if the ONU does not support packet management, a message that the packet management negotiation fails may be returned to the OLT.
  • FIG. 11 is a schematic diagram of a GEM header structure in a GTC frame payload defined by the ITU-T G.984.3 standard.
  • the packet management response message format may be as shown in Table 2.
  • step S33 after step S33 returns the packet management negotiation response information to the OLT according to the packet management response message format, the method may further include step S34.
  • step S34 a packet management message delivered by the OLT according to a message header format is received.
  • the OLT receives information that the packet management negotiation response is successful, the OLT is included in the packet for management, and the ONU included in the packet is sent a packet management message. It is conceivable that if a message that the packet management negotiation fails is received, the ONU is not included in the packet for management.
  • the OLT when performing group management, the OLT still uses various types of management messages defined by the standard for configuration and delivery.
  • the modification of the current standard message header is shown in Table 3.
  • the upper 4 bits of the Device identifier field in the message header are used to store the Group ID to which the current message belongs (the ID is determined in the group management negotiation). If the various messages received by the ONU carry a valid Group ID, there is no need to immediately respond to the OLT according to the stop-and-wait protocol, but to perform checksum buffering until the end of the packet operation.
  • the method may further include steps S35-S36.
  • step S35 a packet management end message delivered by the OLT according to the packet management message format is received.
  • step S36 a packet management end response message is returned to the OLT according to the packet management response message format.
  • step S36 returns the packet management end response message to the OLT according to the packet management response message format, which may include: in the case that a packet management failure message exists in the packet, according to the packet management response message format, The packet management failure message is returned to the OLT; the packet management failure message carries the TCI in the message header format; and if a packet management success message exists in the packet, the packet management success message is returned to the OLT.
  • the packet management response message format may include: in the case that a packet management failure message exists in the packet, according to the packet management response message format, The packet management failure message is returned to the OLT; the packet management failure message carries the TCI in the message header format; and if a packet management success message exists in the packet, the packet management success message is returned to the OLT.
  • the method for managing ONUs provided by the embodiments of the present disclosure, by including similar management operations of multiple ONUs in the group management, and uniformly issuing group management messages; solving the increase of various OAM operations in the PON system to the system bandwidth and OLT The problem of generating a huge load; thereby reducing the OAM operation amount of the system, saving bandwidth resources, and improving the management performance of the system.
  • an embodiment of the present disclosure further provides an ONU, including: a memory 41, a processor 42, and a program that manages the ONU stored on the memory 41 and can run on the processor 42, and the program that manages the ONU is processed
  • the processor 42 executes, it is used to implement the steps of the following method for managing the ONU: receiving a packet management negotiation message issued by the OLT according to the packet management message format; and in response to determining that it supports packet management, creating a GEM PORT for receiving the packet management message; And, according to the packet management response message format, the packet management negotiation response information is returned to the OLT; wherein the packet management negotiation response information is information that the packet management negotiation is successful.
  • the program for managing the ONU when executed by the processor 42, it is further used to implement the steps of the following method for managing the ONU: receiving a packet management message issued by the OLT according to a message header format.
  • the program for managing the ONU when executed by the processor 42, it is further used to implement the following steps of the method for managing the ONU: receiving a packet management end message issued by the OLT according to the packet management message format; and, according to The packet management response message format returns a packet management end response message to the OLT.
  • the program for managing the ONU when executed by the processor 42, it is further used to implement the following steps of the method for managing the ONU: in the case that a packet management failure message exists in the packet, the response is managed according to the packet In the message format, the packet management failure message is returned to the OLT; the packet management failure message carries the TCI in the message header format; and if a packet management success message exists in this packet, the packet management success message is returned to the OLT.
  • the ONU provided by the embodiment of the present disclosure, by including similar management operations of multiple ONUs in the group management, and uniformly issuing the group management message; solving the increase of various OAM operations in the PON system has a great impact on system bandwidth and OLT. Load issues; thereby reducing the system's OAM operations, saving bandwidth resources, and improving system management performance.
  • an embodiment of the present disclosure further provides a method for managing an ONU, which may include steps S51-S53.
  • step S51 the OLT sends a packet management negotiation message to the ONU according to the packet management message format.
  • the ONU receives the packet management negotiation message issued by the OLT; if it supports packet management, it creates a GEM PORT for receiving the packet management message, and returns the packet management negotiation response information to the OLT according to the packet management response message format. ; Among them, the packet management negotiation response information returned by the ONU is information that the packet management negotiation is successful.
  • step S53 the OLT receives the packet management negotiation response information returned by the ONU; if the packet management negotiation response information returned by the ONU is information that the packet management negotiation is successful, the ONU is included in the packet.
  • the OLT confirms the service configuration of each ONU, which involves different parameters of the PON (Transmission and Convergence) layer, such as the T-Cont's Alloc id (allocation id) and GEM port ID (GEM port id), because the key characteristic parameters are different Therefore, the group management mode cannot be adopted; other parts do not involve the PON and TC layer characteristic parameters, and the group management mode can be adopted.
  • PON Transmission and Convergence
  • Alloc id allocation id
  • GEM port ID GEM port ID
  • the OLT manages ONU1 and ONU2 in a point-to-point manner defined by the standard, and issues management messages.
  • management messages of T-CONT, Priority queue, GEM port CTP (GEM port CTP), and GEM interworking TP (GEM interworking TP) entities are delivered.
  • 802.1p mapper service profile 802.1p mapping service profile
  • the group management end message is delivered to all ONUs in the group according to the group management message format.
  • ONU1 checks whether there is a failed message in this packet. If there is a TCI value in the corresponding message header, it returns to the OLT; if all the successes, the OLT responds successfully.
  • the OLT receives the response from ONU1. If it succeeds, it ends the packet management. If there are less than 15 failed TCIs, the OLT sends the corresponding TCI messages to ONU1 one by one according to the standard point-to-point method according to the failed TCI sequence number returned by ONU1; ONU1 responds to the OLT one by one according to the standard definition. If there are 15 or more failed TCIs, in order to ensure data consistency, the OLT first performs a MIB (Reset) operation on the ONU1 to clear the issued configuration; the OLT resets all the configurations according to the standard point-to-point method. Send; ONU1 responds to the OLT one by one according to the standard definition.
  • MIB Reset
  • the software version upgrade is delivered in batches in a group mode to implement the function of batch management of multiple ONUs.
  • the specific process is as follows:
  • the OLT includes all ONUs with the target software version in the group to be upgraded.
  • the group management end message is delivered to all ONUs in the group according to the preset group management message format.
  • ONU1 checks whether there is a failed message in this packet. If any TCI group in the corresponding message header is returned to the OLT; if all are successful, the OLT responds successfully.
  • the OLT receives the response from ONU1. If it succeeds, it ends the packet management. If there are less than 15 failed TCIs, the OLT will send the version file segments corresponding to the TCI part to ONU1 one by one according to the standard point-to-point method according to the failed TCI sequence number returned by ONU1; ONU1 defines every Each segment responds to the OLT. If there are 15 failed TCIs, in order to ensure the integrity of the version file, the OLT re-initiates a complete software version upgrade process to ONU1 in a standard point-to-point manner until the upgrade is completed.
  • the method for managing ONUs provided by the embodiments of the present disclosure, by including similar management operations of multiple ONUs in the group management, and uniformly issuing group management messages; solving the increase of various OAM operations in the PON system to the system bandwidth and OLT The problem of generating a huge load; thereby reducing the OAM operation amount of the system, saving bandwidth resources, and improving the management performance of the system.
  • an embodiment of the present disclosure further provides a passive optical fiber network system, which may include an optical line terminal OLT61 and an optical network unit ONU62;
  • the OLT 61 is configured to send a packet management negotiation message to the ONU 62 according to the packet management message format; receive the packet management negotiation response information returned by the ONU 62; and when the packet management negotiation response information returned by the ONU 62 is information that the packet management negotiation is successful, ONU62 is included in the group;
  • ONU62 is used to receive the packet management negotiation message sent by OLT61; if it supports packet management, create a GEM PORT for receiving the packet management message, and return the packet management negotiation response information to OLT61 according to the packet management response message format;
  • the response message of the packet management negotiation returned by the ONU 62 is the message that the packet management negotiation is successful.
  • the OLT sends a packet management end message to the ONU. If there is a message that the packet management fails, the ONU returns a message that the packet management fails.
  • the OLT re-delivers the packet management message according to the standard point-to-point method, and the ONU receives and processes the packet management message.
  • the same management operations of multiple ONUs are included in the group management, and the group management messages are uniformly issued; the increase of various OAM operations in the PON system to the system bandwidth is solved And OLT produce a huge load problem; thereby reducing the OAM operation of the system, saving bandwidth resources, and improving the management performance of the system.
  • a program for managing an ONU is stored on the computer-readable storage medium, and when the program for managing the ONU is executed by a processor, any one of the management ONUs described in this embodiment is implemented. Method steps.
  • the same management operations of multiple ONUs are included in the group management, and the group management messages are uniformly issued; the increase of various OAM operations in the PON system to the system bandwidth and The OLT generates a huge load problem; thus, the OAM operation amount of the system can be reduced, bandwidth resources can be saved, and the management performance of the system can be improved.
  • the technical solution of the present disclosure that is essentially or contributes to the existing technology can be embodied in the form of a software product that is stored in a storage medium (such as ROM / RAM, magnetic disk, The optical disc) includes several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in the embodiments of the present disclosure.
  • a terminal device which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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Abstract

本申请提供一种管理ONU的方法、OLT、ONU、无源光纤网络系统以及计算机可读存储介质，该方法包括：根据分组管理消息格式，向光网络单元ONU下发分组管理协商消息；接收ONU根据分组管理应答消息格式返回的分组管理协商应答信息；以及，响应于分组管理协商成功，将ONU列入分组。

Description

管理ONU的方法、OLT、ONU、系统以及存储介质 技术领域
本公开涉及但不限于通信技术领域。
背景技术
随着FTTx(Fiber-to-the-x，光纤接入)技术的成熟，PON(Passive Optical Network，无源光纤网络)系统容量越来越大，系统的管理量也呈几何式增长。而在现行PON系统中，OLT(optical line terminal，光线路终端)采用停止等待协议(Stop-and-Wait)对ONU(Optical Network Unit，光网络单元)进行管理；且除了对于少部分OAM(Operation Administration and Maintenance，操作管理维护)操作采用广播式下发，对其它操作全部采用点到点(Point-to-Point)的方式进行管理。
发明内容
根据本公开实施例的一个方面，提供的一种管理ONU的方法，包括：根据分组管理消息格式，向ONU下发分组管理协商消息；接收ONU根据分组管理应答消息格式返回的分组管理协商应答信息；以及，响应于分组管理协商成功，将ONU列入分组。
根据本公开实施例的另一个方面，提供的一种OLT，包括：存储器、处理器及存储在存储器上并可在处理器上运行的管理ONU的程序，管理ONU的程序被处理器执行时实现本公开任一实施例提供的管理ONU的方法的步骤。
根据本公开实施例的又一个方面，提供的一种管理ONU的方法，包括：接收OLT根据分组管理消息格式下发的分组管理协商消息；响应于确定所述ONU支持分组管理，创建用于接收分组管理消息的GEM PORT(GPON Encapsulation Method PORT，无源光网络封装方式端口)；以及，根据分组管理应答消息格式，向OLT返回分组管理协商应答信息；其中，分组管理协商应答信息为分组管理协商成功的信息。
根据本公开实施例的再一个方面，提供的一种ONU，包括：存储器、处理器及存储在存储器上并可在处理器上运行的管理ONU的程序，管理ONU的程序被处理器执行时用于实现本公开任一实施例提供的管理ONU的方法的步骤。
根据本公开实施例的另一个方面，提供的一种无源光纤网络系统，包括OLT和ONU；OLT配置为：根据分组管理消息格式，向ONU下发分组管理协商消息；接收ONU返回的分组管理协商应答信息；以及，响应于分组管理协商成功，将ONU列入分组；ONU配置为：接收OLT下发的分组管理协商消息；响应于确定自身支持分组管理，创建用于接收分组管理消息的GEM PORT；以及，根据分组管理应答消息格式向OLT返回分组管理协商应答信息；其中，分组管理协商应答信息为分组管理协商成功的信息。
根据本公开实施例的另一个方面，提供的一种计算机可读存储介质，计算机可读存储介质上存储有管理ONU的程序，管理ONU的程序被处理器执行时实现本公开任一实施例提供的管理ONU的方法的步骤。
附图说明
图1为根据本公开实施例的管理ONU的方法的流程示意图。
图2为根据本公开实施例的管理ONU的方法的另一流程示意图。
图3为根据本公开实施例的OLT的结构示意图。
图4为根据本公开实施例的管理ONU的方法的又一流程示意图。
图5为根据本公开实施例的管理ONU的方法的再一流程示意图。
图6为根据本公开实施例的ONU的结构示意图。
图7为根据本公开实施例的管理ONU的方法的再一流程示意图。
图8为根据本公开实施例的无源光纤网络系统的结构示意图。
图9为根据本公开实施例的以标准实体构建的数据业务模型的结构示意图。
图10为根据本公开实施例的无源光纤网络系统时序的示意图。
图11为ITU-T G.984.3标准定义的GTC帧载荷中GEM头结构的 示意图。
具体实施方式
为了使本公开所要解决的技术问题、技术方案及有益效果更加清楚、明白，以下结合附图和实施例，对本公开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公开，并不用于限定本公开。
在现行PON系统中，OLT采用停止等待协议对ONU进行管理；且除了对于少部分OAM操作采用广播式下发，对其它操作全部采用点到点的方式进行管理。在这种管理机制和系统规模下，一旦发生规模上线(比如OLT重启)或者批量开通(比如批量ONU新开局)或者批量的系统升级(比如若干ONU同时升级)，系统中各种OAM操作的数量将呈指数增加，对系统带宽和OLT都产生极大载荷。
有鉴于此，本公开实施例提供一种管理ONU的方法、OLT、ONU、无源光纤网络系统以及计算机可读存储介质，以解决PON系统中各种OAM操作的增加，对系统带宽和OLT产生极大载荷的问题。
如图1所示，本公开实施例提供一种管理ONU的方法，该方法用于OLT中，可包括步骤S11-S13。
在步骤S11中，OLT根据分组管理消息格式(Group Manage Message type)，向ONU下发分组管理协商消息。
根据本公开提供的实施例，作为现行标准的一种补充管理方式，考虑系统兼容性，在分组管理开始时进行协商，以确定系统能够支持分组管理。同时在分组管理结束或者暂停时需要通知ONU结束或者暂停分组管理，进入标准的点到点管理模式。
根据本公开提供的实施例，分组管理消息格式可以为预设的分组管理消息格式。在一个实例中，分组管理消息格式可如表1所示。
表1：分组管理消息格式
Figure PCTCN2019093726-appb-000001
Figure PCTCN2019093726-appb-000002
由于分组管理消息为全局消息，没有管理实体(Managed entity)对象，所以Entity Class取值固定为0，分组管理的分组ID号(Group ID)的有效取值范围为1-15。分组消息类型Manage type＝001时，表示开始当前分组(Start Group)；Manage type＝010时，表示暂停当前分组(Pause Group)；Manage type＝011时，表示结束当前分组(End Group)，其它值保留。需要说明的是，ONU的数量在此不作限制。
在步骤S12中，OLT接收ONU根据分组管理应答消息格式(Group Manage Response Message type)返回的分组管理协商应答信息。
根据本公开提供的实施例，ONU接收OLT下发的分组管理协商消息；如果ONU支持分组管理，为了后续能够正常接收OLT下发的分组管理消息，需要在应答之前，创建用于接收分组管理消息的GEM PORT，并根据分组管理应答消息格式向OLT返回分组管理协商应答信息，即分组管理协商成功的信息。可以想象得到的，若ONU不支持分组管理，可将分组管理协商失败的消息返回给OLT。
作为示例，图11为ITU-T G.984.3标准定义的GTC(GPON Transmission Convergence Layer，无源光网络传输汇聚层)帧载荷中GEM头结构的示意图，可创建用于接收分组管理消息的GEM PORT(Port ID＝0)。由于PON系统中光路为广播方式，只要支持分组的ONU都创建了Port ID为0的GEM PORT，就都可以收到OLT下发的分 组管理消息，从而实现分组管理消息的批量下发。
根据本公开提供的实施例，分组管理应答消息格式可以为预设的分组管理应答消息格式。在一个实例中，分组管理应答消息格式可如表2所示。
表2：分组管理应答消息格式
Figure PCTCN2019093726-appb-000003
Figure PCTCN2019093726-appb-000004
在步骤S13中，在ONU返回的分组管理协商应答信息为分组管理协商成功的信息的情况下，OLT将该ONU列入分组。
根据本公开提供的实施例，OLT只要接收到分组管理协商成功的信息，则将该ONU列入分组进行管理，并对列入分组的ONU下发分组管理消息。可以想象得到的，如果接收到分组管理协商失败的信息，则不将该ONU列入分组进行管理。
如图2所示，根据本公开提供的实施例，在该ONU返回的分组管理协商应答信息为分组管理协商成功的信息的情况下，在将该ONU列入分组之后，该方法还可包括步骤S14-步骤S16。
在步骤S14中，对列入分组的所有ONU，OLT按照消息头格式下发分组管理消息。
根据本公开提供的实施例，按照前述步骤完成分组管理协商后，进行分组管理时，OLT依然采用标准定义的各类管理消息进行配置下发。但为了便于ONU区分分组管理和点到点管理两种不同方式，同时又能正确识别当前所属分组管理的ID号，可对现行标准消息头进行如表3所示的改造。
表3：消息头格式
Figure PCTCN2019093726-appb-000005
将消息头中Device identifier字段的高4个bits用于存放当前消息所属的Group ID(该ID在分组管理协商中确定)。如果ONU收到的各类消息中携带有效Group ID，则不需要按照停止等待协议方式立即应答OLT，而是进行校验和缓存，直至收到结束分组操作。
在步骤S15中，OLT根据分组管理消息格式，向列入分组的所有ONU下发分组管理结束消息。
根据本公开提供的实施例，参考表1，Manage type＝011时，表示结束当前分组。
根据本公开提供的实施例，列入分组的ONU接收OLT下发的分组管理结束消息；按照前述的分组管理应答消息格式，向OLT返回分组管理结束应答消息。
根据本公开提供的实施例，ONU检查本次分组中是否存在分组管理失败消息；若本次分组中存在分组管理失败消息，则按照分组管理应答消息格式，将分组管理失败消息返回给OLT；否则将分组管理成功消息返回给OLT。其中分组管理失败消息中携带消息头格式中的TCI(Transaction correlation identifier，交互关联标识)
请参考表2，当分组管理成功时，反馈的分组管理成功消息， Result＝0000，即表示成功。如果存在一条或多条分组管理失败的消息(包括标准定义的各种错误类型)，则在表2所述格式中的第11-40字节中，返回失败消息中的TCI值，最多可返回15组TCI。
在步骤S16中，OLT接收列入分组的ONU根据分组管理应答消息格式返回的分组管理结束应答消息，并进行分组管理结束的处理。
根据本公开提供的实施例，OLT接收列入分组的ONU根据分组管理应答消息格式返回的分组管理结束应答消息，并进行分组管理结束的处理包括：在接收到的分组管理结束应答消息为分组管理成功消息的情况下，结束分组管理；在接收到的分组管理结束应答消息为分组管理失败消息、且分组管理失败消息中携带的TCI的数目小于预设阈值的情况下，按照点到点的方式，逐一重新下发TCI所对应的分组管理消息；在接收到的分组管理结束应答消息为分组管理失败消息、且分组管理失败消息中携带的TCI的数目不小于预设阈值的情况下，按照点到点的方式整体重新下发当前分组内的分组管理消息。
作为示例地，若TCI的数目小于15组，那么按照点到点的方式，将失败部分的TCI对应的分组管理消息逐一重新下发；如果返回的TCI数等于15组，则按照点到点的方式，针对全部配置，向ONU整体重新下发分组管理消息。
根据本公开实施例提供的管理ONU的方法，通过将多个ONU的同类管理操作列入分组管理，并统一下发分组管理消息；解决了PON系统中各种OAM操作的增加对系统带宽和OLT产生极大载荷的问题；从而可减少系统的OAM操作量、节约带宽资源、提高系统的管理性能。
如图3所示，本公开实施例还提供一种OLT，可包括：存储器21、处理器22及存储在存储器21上并可在处理器22上运行的管理ONU的程序，管理ONU的程序被处理器22执行时，可用于实现以下管理ONU的方法的步骤：根据分组管理消息格式，向ONU下发分组管理协商消息；接收ONU根据分组管理应答消息格式返回的分组管理协商应答信息；以及，响应于分组管理协商成功，将该ONU列入分组。
根据本公开提供的实施例，管理ONU的程序被处理器22执行时，还用于实现以下管理ONU的方法的步骤：根据消息头格式，向列入分 组的所有ONU下发分组管理消息。
根据本公开提供的实施例，管理ONU的程序被处理器22执行时，还用于实现以下管理ONU的方法的步骤：根据分组管理消息格式，向列入分组的所有ONU下发分组管理结束消息；以及，接收列入分组的任一ONU根据分组管理应答消息格式返回的分组管理结束应答消息，并进行分组管理结束的处理。
根据本公开提供的实施例，管理ONU的程序被处理器22执行时，还用于实现以下管理ONU的方法的步骤：响应于确定分组管理结束应答消息为分组管理成功消息，结束分组管理；响应于确定分组管理结束应答消息为分组管理失败消息、且分组管理失败消息中携带的TCI的数目小于预设阈值，按照点到点方式，逐一重新下发TCI所对应的分组管理消息；响应于确定分组管理结束应答消息为分组管理结束应答失败消息、且分组管理结束应答失败消息中携带的TCI的数目不小于预设阈值，按照点到点方式，整体重新下发当前分组内的所有分组管理消息。
根据本公开实施例提供的OLT，通过将多个ONU的同类管理操作列入分组管理，并统一下发分组管理消息；解决了PON系统中各种OAM操作的增加对系统带宽和OLT产生极大载荷的问题；从而可减少系统的OAM操作量、节约带宽资源、提高系统的管理性能。
如图4所示，本公开实施例还提供另一种管理ONU的方法，该方法用于ONU中，可包括步骤S31-S33。
在步骤S31中，接收OLT根据分组管理消息格式下发的分组管理协商消息。
根据本公开提供的实施例，作为现行标准的一种补充管理方式，考虑系统兼容性，在分组管理开始时进行协商，以确定系统能够支持分组管理。同时在分组管理结束或者暂停时需要通知ONU结束或者暂停分组管理，进入标准的点到点管理模式。
根据本公开提供的实施例，分组管理消息格式可如表1所示。
由于分组管理消息为全局消息，没有管理实体对象，所以Entity Class取值固定为0，分组管理的分组ID号(Group ID)的有效取值 范围为1-15。分组消息类型Manage type＝001时，表示开始当前分组；Manage type＝010时，表示暂停当前分组；Manage type＝011时，表示结束当前分组，其它值保留。
在步骤S32中，在支持分组管理的情况下，创建用于接收分组管理消息的GEM PORT。
在步骤S33中，根据分组管理应答消息格式，向OLT返回分组管理协商应答信息；其中，分组管理协商应答信息为分组管理协商成功的信息。
根据本公开提供的实施例，ONU接收光线路终端OLT下发的分组管理协商消息；如果ONU支持分组管理，为了后续能够正常接收OLT下发的分组管理消息，需要在应答之前，创建用于接收分组管理消息的GEM PORT，并根据分组管理应答消息格式向OLT返回分组管理协商应答信息，即分组管理协商成功的信息。可以想象得到的，若ONU不支持分组管理，可将分组管理协商失败的消息返回给OLT。
作为示例，图11为ITU-T G.984.3标准定义的GTC帧载荷中GEM头结构的示意图，可创建用于接收分组管理消息的GEM PORT(Port ID＝0)。由于PON系统中光路为广播方式，只要支持分组的ONU都创建了Port ID为0的GEM PORT，就都可以收到OLT下发的分组管理消息，从而实现分组管理消息的批量下发。
根据本公开提供的实施例，分组管理应答消息格式可如表2所示。
请参考图5所示，在本公开提供的一种实施例中，在步骤S33根据分组管理应答消息格式向OLT返回分组管理协商应答信息之后，该方法还可包括步骤S34。
在步骤S34中，接收OLT根据消息头格式下发的分组管理消息。
根据本公开提供的实施例，OLT只要接收到分组管理协商应答成功的信息，则将该ONU列入分组进行管理，并对列入分组的ONU下发分组管理消息。可以想象得到的，如果接收到分组管理协商失败的消息，则不将该ONU列入分组进行管理。
根据本公开提供的实施例，进行分组管理时，OLT依然采用标准 定义的各类管理消息进行配置下发。但为了便于ONU区分分组管理和点到点管理两种不同方式，同时又能正确识别当前所属分组管理的ID号，对现行标准消息头的改造如表3所示。
将消息头中Device identifier字段的高4个bits用于存放当前消息所属的Group ID(该ID在分组管理协商中确定)。如果ONU收到的各类消息中携带有效Group ID，则不需要按照停止等待协议方式立即应答OLT，而是进行校验和缓存，直至收到结束分组操作。
请再参考图5所示，在本公开提供的另一个实施例中，在步骤S34接收OLT根据消息头格式下发的分组管理消息之后，该方法还可包括步骤S35-S36。
在步骤S35中，接收OLT根据分组管理消息格式下发的分组管理结束消息。
在步骤S36中，根据分组管理应答消息格式，向OLT返回分组管理结束应答消息。
根据本公开提供的实施例，步骤S36根据分组管理应答消息格式，向OLT返回分组管理结束应答消息，可包括：在本次分组中存在分组管理失败消息的情况下，按照分组管理应答消息格式，将分组管理失败消息返回给OLT；其中分组管理失败消息中携带消息头格式中的TCI；在本次分组中存在分组管理成功消息的情况下，将分组管理成功消息返回给OLT。
根据本公开实施例提供的管理ONU的方法，通过将多个ONU的同类管理操作列入分组管理，并统一下发分组管理消息；解决了PON系统中各种OAM操作的增加对系统带宽和OLT产生极大载荷的问题；从而可减少系统的OAM操作量、节约带宽资源、提高系统的管理性能。
如图6所示，本公开实施例还提供一种ONU，包括：存储器41、处理器42及存储在存储器41上并可在处理器42上运行的管理ONU的程序，管理ONU的程序被处理器42执行时，用于实现以下管理ONU的方法的步骤：接收OLT根据分组管理消息格式下发的分组管理协商消息；响应于确定自身支持分组管理，创建用于接收分组管理消息的GEM PORT；以及，根据分组管理应答消息格式，向OLT返回分组管理 协商应答信息；其中，分组管理协商应答信息为分组管理协商成功的信息。
根据本公开提供的实施例，管理ONU的程序被处理器42执行时，还用于实现以下管理ONU的方法的步骤：接收OLT根据消息头格式下发的分组管理消息。
根据本公开提供的实施例，管理ONU的程序被处理器42执行时，还用于实现以下的管理ONU的方法的步骤：接收OLT根据分组管理消息格式下发的分组管理结束消息；以及，根据分组管理应答消息格式，向OLT返回分组管理结束应答消息。
根据本公开提供的实施例，管理ONU的程序被处理器42执行时，还用于实现以下的管理ONU的方法的步骤：在本次分组中存在分组管理失败消息的情况下，按照分组管理应答消息格式，将分组管理失败消息返回给OLT；其中分组管理失败消息中携带消息头格式中的TCI；在本次分组中存在分组管理成功消息的情况下，将分组管理成功消息返回给OLT。
根据本公开实施例提供的ONU，通过将多个ONU的同类管理操作列入分组管理，并统一下发分组管理消息；解决了PON系统中各种OAM操作的增加对系统带宽和OLT产生极大载荷的问题；从而可减少系统的OAM操作量、节约带宽资源、提高系统的管理性能。
如图7所示，本公开实施例还提供了一种管理ONU的方法，可包括步骤S51-S53。
在步骤S51中，OLT根据分组管理消息格式，向ONU下发分组管理协商消息。
在步骤52中，ONU接收OLT下发的分组管理协商消息；在支持分组管理的情况下，创建用于接收分组管理消息的GEM PORT，并根据分组管理应答消息格式向OLT返回分组管理协商应答信息；其中，ONU返回的分组管理协商应答信息为分组管理协商成功的信息。
在步骤S53中，OLT接收ONU返回的分组管理协商应答信息；在ONU返回的分组管理协商应答信息为分组管理协商成功的信息的情况下，将ONU列入分组。
为了更好地理解本实施例，以下分别对以标准实体构建的数据业务进行批量管理、通过分组方式批量下发软件版本升级的两种情形进行说明：
如图9所示，给出了一种以标准实体构建的数据业务模型，图中的两个ONU(实际应用中ONU远超过两个，此处只为了便于阐述)具有完全相同的业务配置，因此可以通过分组配置的方式进行批量管理，具体过程如下所示：
OLT确认各ONU的业务配置，其中涉及PON TC(Transmission Convergence，传输汇聚)层参数不同的，比如T-Cont的Alloc id(分配id)、GEM PORT id(GEM端口id)，因为关键特征参数不同，因此不能采用分组管理方式；其它部分不涉及PON TC层特征参数，可以采用分组管理方式。
对于不能采用分组管理方式的部分，OLT采用标准定义的点到点方式管理ONU1和ONU2，下发管理消息。以ONU1为例，下发T-CONT、Priority queue(优先级队列)、GEM port CTP(GEM端口CTP)以及GEM interworking TP(GEM互通TP)实体的管理消息。
对于可以采用分组管理方式的部分，OLT开始分组管理操作，按照预设分组管理消息格式下发给ONU1，开始Group id＝1的分组管理协商。
ONU1如果不支持分组管理，按照预设分组管理应答消息格式应答OLT不支持；否则创建GEM port id＝0的GEM Port，并应答OLT成功；ONU1如果应答不支持分组管理，OLT则不将该ONU1列入分组；ONU1如果应答成功，即表示支持分组管理，OLT则将该ONU1列入Group id＝1的分组。ONU2类似。
按照预设消息头格式，OLT采用分组管理的方式，对Group id＝1分组中的ONU(ONU1和ONU2)广播下发802.1p mapper service profile(802.1p映射服务配置文件)实体的管理消息；Group id＝1分组中的全部ONU(ONU1和ONU2)从GEM port id＝0的GEM Port中接收到该条配置消息，并进行预检和缓存，无需应答OLT。
分组中全部配置下发完成后，按照分组管理消息格式，向本分 组中全部ONU下发分组管理结束消息。ONU1收到分组管理结束消息后，检查本次分组中是否存在失败的消息，如果有将对应消息头中的TCI值返回给OLT；如果全部成功，则应答OLT成功。
OLT收到ONU1的应答，如果成功，则结束分组管理。如果存在失败的TCI且小于15条，OLT对照ONU1返回的失败TCI序号，将对应TCI的消息按照标准的点到点方式重新逐一下发给ONU1；ONU1按照标准定义逐条应答OLT。如果存在失败的TCI且大于等于15条，为了确保数据一致性，OLT先将ONU1进行MIB Reset(MIB复位)操作，清除已下发的配置；OLT将全部配置按照标准的点到点方式重新下发；ONU1按照标准定义逐条应答OLT。
在另一种情形中，通过分组方式批量下发软件版本升级，实现对多台ONU批量管理的功能，具体过程如下所示：
OLT根据升级需求，将全部同目标软件版本的ONU列入待升级分组。
OLT开始分组管理操作，按照预设分组管理消息格式下发给ONU1，开始Group id＝1的分组管理协商。
ONU1如果不支持分组管理，应答OLT不支持；否则创建GEM port id＝0的GEM Port，并应答OLT成功；ONU1如果应答不支持分组管理，则不将该ONU1列入分组；ONU1如果应答成功，即表示支持分组管理，则将该ONU1列入Group id＝1的分组。ONU2类似。
按照预设消息头格式，OLT采用分组管理的方式，对Group id＝1分组中的ONU(ONU1和ONU2)广播下发软件版本升级相关的管理消息；Group id＝1分组中的全部ONU(ONU1和ONU2)从GEM port id＝0的GEM Port中接收到该条配置消息，并进行预检和缓存，无需应答OLT。
分组中全部配置下发完成后，按照预设分组管理消息格式，向本分组中全部ONU下发分组管理结束消息。ONU1收到分组管理结束消息后，检查本次分组中是否存在失败的消息，如果有将对应消息头中的TCI组返回给OLT；如果全部成功，则应答OLT成功。
OLT收到ONU1的应答，如果成功，则结束分组管理。如果存在 失败的TCI且小于15条，OLT对照ONU1返回的失败TCI序号，将对应TCI部分的版本文件片段(segment)，按照标准的点到点方式重新逐一下发给ONU1；ONU1按照标准定义每个片段分别应答OLT。如果存在失败的TCI且大于等于15条，为了确保版本文件的完整性，OLT对ONU1按照标准的点到点方式重新发起一轮完整的软件版本升级流程，直至升级完成。
根据本公开实施例提供的管理ONU的方法，通过将多个ONU的同类管理操作列入分组管理，并统一下发分组管理消息；解决了PON系统中各种OAM操作的增加对系统带宽和OLT产生极大载荷的问题；从而可减少系统的OAM操作量、节约带宽资源、提高系统的管理性能。
如图8所示，本公开实施例还提供一种无源光纤网络系统，可包括光线路终端OLT61和光网络单元ONU62；
OLT61，用于根据分组管理消息格式，向ONU62下发分组管理协商消息；接收ONU62返回的分组管理协商应答信息；在ONU62返回的分组管理协商应答信息为分组管理协商成功的信息的情况下，将ONU62列入分组；
ONU62，用于接收OLT61下发的分组管理协商消息；在支持分组管理的情况下，创建用于接收分组管理消息的GEM PORT，并根据分组管理应答消息格式向OLT61返回分组管理协商应答信息；其中，ONU62返回的分组管理协商应答信息为分组管理协商成功的信息。
为了更好地理解本实施例，以下结合图10对OLT和ONU的时序关系进行说明：
OLT对ONU进行分组，ONU如果支持分组管理，创建用于接收分组管理消息的端口，即创建GEM port id＝0的GEM Port，并应答OLT分组成功。
OLT开始对ONU下发分组管理消息，ONU从GEM port id＝0的GEM Port中接收分组管理消息。
若完成下发分组管理消息，OLT对ONU下发分组管理结束消息。若有分组管理失败的消息，ONU返回分组管理失败的消息。
OLT按照标准的点到点方式重新下发分组管理消息，ONU接收并 处理分组管理消息。
根据本公开实施例提供的的无源光纤网络系统，通过将多个ONU的同类管理操作列入分组管理，并统一下发分组管理消息；解决了PON系统中各种OAM操作的增加对系统带宽和OLT产生极大载荷的问题；从而可减少系统的OAM操作量、节约带宽资源、提高系统的管理性能。
根据本公开实施例提供的一种计算机可读存储介质，计算机可读存储介质上存储有管理ONU的程序，管理ONU的程序被处理器执行时实现本实施例中所述的任一管理ONU的方法的步骤。
根据本公开实施例提供的计算机可读存储介质，通过将多个ONU的同类管理操作列入分组管理，并统一下发分组管理消息；解决了PON系统中各种OAM操作的增加对系统带宽和OLT产生极大载荷的问题；从而可减少系统的OAM操作量、节约带宽资源、提高系统的管理性能。
需要说明的是，本公开实施例提供的装置与方法均属于同一构思，其具体实现过程详见本公开实施例，且方法实施例中的技术特征在装置实施例中均对应适用，这里不再赘述。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件来实现，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本公开各个实施例所述的方法。
以上参照附图说明了本公开的优选实施例，并非因此局限本公开的权利范围。本领域技术人员不脱离本公开的范围和实质，可以有多种变型方案实现本公开，比如作为一个实施例的特征可用于另一实施例而得到又一实施例。凡在运用本公开的技术构思之内所作的任何修改、等同替换和改进，均应在本公开的权利范围之内。

Claims (12)

  1. 一种管理光网络单元ONU的方法，包括：
    根据分组管理消息格式，向所述ONU下发分组管理协商消息；
    接收所述ONU根据分组管理应答消息格式返回的分组管理协商应答信息；以及，
    响应于分组管理协商成功，将所述ONU列入分组。
  2. 根据权利要求1所述的方法，在响应于分组管理协商成功，将所述ONU列入所述分组之后，还包括：
    根据消息头格式，向列入所述分组的所有ONU下发分组管理消息。
  3. 根据权利要求2所述的方法，在根据所述消息头格式，向列入所述分组的所有ONU下发所述分组管理消息之后，还包括：
    根据所述分组管理消息格式，向列入所述分组的所有ONU下发分组管理结束消息；以及，
    接收列入所述分组的任一ONU根据所述分组管理应答消息格式返回的分组管理结束应答消息，并进行分组管理结束的处理。
  4. 根据权利要求3所述的方法，其中，接收列入所述分组的所述任一ONU根据所述分组管理应答消息格式返回的所述分组管理结束应答消息，并进行分组管理结束的处理，包括：
    响应于确定所述分组管理结束应答消息为分组管理成功消息，结束分组管理；
    响应于确定所述分组管理结束应答消息为分组管理失败消息、且所述分组管理失败消息中携带的交互关联标识TCI的数目小于预设阈值，向所述任一ONU逐一重新下发携带的TCI所对应的分组管理消息；
    响应于确定所述分组管理结束应答消息为分组管理结束应答失 败消息、且所述分组管理结束应答失败消息中携带的TCI的数目不小于预设阈值，向所述任一ONU整体重新下发所述分组内的所有分组管理消息。
  5. 一种光线路终端OLT，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的管理光网络单元ONU的程序，所述管理ONU的程序被所述处理器执行时实现如权利要求1至4中任一项所述的管理ONU的方法的步骤。
  6. 一种管理光网络单元ONU的方法，包括：
    接收光线路终端OLT根据分组管理消息格式下发的分组管理协商消息；
    响应于确定所述ONU支持分组管理，创建用于接收分组管理消息的无源光网络封装方式端口GEM PORT；以及，
    根据分组管理应答消息格式，向所述OLT返回分组管理协商应答信息；其中，所述分组管理协商应答信息为分组管理协商成功的信息。
  7. 根据权利要求6所述的方法，在根据所述分组管理应答消息格式，向所述OLT返回所述分组管理协商应答信息之后，还包括：
    接收所述OLT根据消息头格式下发的分组管理消息。
  8. 根据权利要求7所述的方法，在接收所述OLT根据所述消息头格式下发的所述分组管理消息之后，还包括：
    接收所述OLT根据所述分组管理消息格式下发的分组管理结束消息；以及，
    根据所述分组管理应答消息格式，向所述OLT返回分组管理结束应答消息。
  9. 根据权利要求8所述的方法，其中，根据所述分组管理应答 消息格式，向所述OLT返回所述分组管理结束应答消息，包括：
    响应于确定本次分组中存在分组管理失败消息，根据所述分组管理应答消息格式，将所述分组管理失败消息返回给所述OLT；其中所述分组管理失败消息中携带所述消息头格式中的交互关联标识TCI；
    响应于确定本次分组中存在分组管理成功消息，将所述分组管理成功消息返回给所述OLT。
  10. 一种光网络单元ONU，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的管理ONU的程序，所述管理ONU的程序被所述处理器执行时实现如权利要求6至9中任一项所述的管理ONU的方法的步骤。
  11. 一种无源光纤网络系统，包括光线路终端OLT和光网络单元ONU：
    所述OLT配置为：根据分组管理消息格式，向所述ONU下发分组管理协商消息；接收所述ONU返回的分组管理协商应答信息；以及，响应于分组管理协商成功，将所述ONU列入分组；
    所述ONU配置为：接收所述OLT下发的所述分组管理协商消息；响应于确定自身支持分组管理，创建用于接收分组管理消息的无源光网络封装方式端口GEM PORT；以及，根据分组管理应答消息格式向所述OLT返回所述分组管理协商应答信息；其中，所述分组管理协商应答信息为分组管理协商成功的信息。
  12. 一种计算机可读存储介质，其上存储有管理光网络单元ONU的程序，所述管理ONU的程序被处理器执行时实现如权利要求1至4和6至9中任一项所述的管理ONU的方法的步骤。
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