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WO2022053063A1 - 无源光纤网络的业务管理方法、装置、光线路终端及介质 - Google Patents

无源光纤网络的业务管理方法、装置、光线路终端及介质 Download PDF

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Publication number
WO2022053063A1
WO2022053063A1 PCT/CN2021/118258 CN2021118258W WO2022053063A1 WO 2022053063 A1 WO2022053063 A1 WO 2022053063A1 CN 2021118258 W CN2021118258 W CN 2021118258W WO 2022053063 A1 WO2022053063 A1 WO 2022053063A1
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Prior art keywords
optical
network unit
optical network
service
control interface
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English (en)
French (fr)
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谢煜
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ZTE Corp
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ZTE Corp
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Priority to US18/044,898 priority Critical patent/US12382202B2/en
Priority to EP21866115.5A priority patent/EP4213493B1/en
Priority to BR112023004547A priority patent/BR112023004547A2/pt
Priority to PL21866115.5T priority patent/PL4213493T3/pl
Priority to ES21866115T priority patent/ES3023608T3/es
Publication of WO2022053063A1 publication Critical patent/WO2022053063A1/zh
Anticipated expiration legal-status Critical
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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
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability
    • 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
    • H04Q2011/0083—Testing; Monitoring

Definitions

  • the present application relates to passive optical fiber networks, and in particular, to a service management method, device, optical line terminal and storage medium for passive optical fiber networks.
  • optical line terminal OLT Optical Line Terminal
  • VNF Virtualized Network Functions
  • OMCI ONU Management and Control Interface
  • ONU optical Network Unit
  • ONU optical Network Unit
  • OMCI VNF Optical Network Element Management Control Interface
  • the deployed optical network unit management control interface virtualized network function OMCI VNF can bring many advantages to the ONU management of the optical network unit, but because the optical network unit management control interface virtualized network function OMCI VNF and the optical line terminal OLT are remote network connections, Therefore there is a possibility of connection interruption.
  • the ONU service of the optical network unit will be abnormal; when the optical network unit management control interface virtual network function OMCI VNF and the optical line terminal OLT When the connection of the optical network unit returns to normal from the interruption, the optical network unit management control interface virtualization network function OMCI VNF In order to refresh the ONU service status of the optical network unit, it needs to be synchronized according to the latest service information of the optical network unit ONU, which will interfere with the normal operation of the optical network unit ONU. service will also lead to abnormal service of the passive optical network.
  • the embodiments of the present application provide a service management method, device, optical line terminal, and storage medium for a passive optical fiber network.
  • An embodiment of the present application provides a service management method for a passive optical fiber network.
  • the passive optical fiber network includes an optical line terminal, an optical network unit, and an optical network unit management control interface for implementing a virtualized network function.
  • the method Including: maintaining a communication connection with the optical line terminal; acquiring the optical network unit management control interface frame data transmitted via the optical line terminal; acquiring the service information of the optical network unit according to the optical network unit management control interface frame data ; According to the network connection state between the optical line terminal and the optical network unit management control interface for realizing the virtualized network function and the service information of the optical network unit, perform service management on the passive optical fiber network .
  • the embodiment of the present application also proposes a service management device for a passive optical fiber network, the device includes a communication module, and the communication module is configured to maintain communication connection with the optical line terminal; is configured to acquire optical network unit management control interface frame data transmitted by the optical line terminal, and acquire service information of the optical network unit according to the optical network unit management control interface frame data; a service management module, the service management The module is configured to perform service management on the passive optical fiber network according to the network connection state of the optical line terminal and the service information of the optical network unit.
  • Embodiments of the present application further provide an optical line terminal, including the foregoing service management device for a passive optical fiber network.
  • Embodiments of the present application further provide a storage medium for computer-readable storage, where the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to achieve The foregoing service management method of the passive optical fiber network.
  • Figure 1 is a schematic diagram of a passive optical fiber network architecture based on virtualized network functions
  • FIG. 2 is a schematic flowchart of a service management method for a passive optical fiber network provided by an embodiment of the present application
  • FIG. 3 is a schematic flowchart of a network connection state determination process provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a service management method for a passive optical network in a network interruption state provided by an embodiment of the present application
  • FIG. 5 is a schematic flowchart of a service management method for a passive optical network in a network disconnection state provided by another embodiment of the present application;
  • FIG. 6 is a schematic flowchart of a service information synchronization state judgment process provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a service management device module of a passive optical fiber network according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a passive optical fiber network architecture provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a passive optical fiber network architecture provided by another embodiment of the present application.
  • Network function virtualization NFV uses general IT hardware and software and virtualization technology to realize network functions originally provided by professional network equipment with software, which can not only reduce network costs but also flexibly expand network functions.
  • NFV realizes communication network functions through software and hardware decoupling and functional abstraction of professional communication equipment, based on general computing, storage, and network equipment, so that network equipment functions no longer depend on dedicated hardware, and resources can be fully and flexibly shared. Realize the rapid development and deployment of new services, and perform automatic deployment, elastic scaling, fault isolation, and self-healing based on actual business requirements.
  • VNFs virtualized network functions
  • OMCI VNF Cell Management Control Interface
  • the OMCI VNF and the OLT device are connected to a remote network, there is a possibility of connection interruption. Once the connection between the OMCI VNF and the OLT device is interrupted, the ONU connected to the OLT device will lose its administrator, resulting in service exceptions. When the connection between the OMCI VNF and the OLT device is restored, the OMCI VNF needs to update the ONU working status on the OLT device. All connected ONUs are synchronized once, which may interfere with the normal services of the ONUs.
  • the embodiments of the present application provide a service management method, device, optical line terminal, and storage medium for a passive optical fiber network.
  • the optical network transmitted through the optical line terminal OLT can be obtained.
  • the unit ONU manages the control interface frame data, and obtains the service information of the ONU according to the frame data of the OMCI management and control interface of the optical network unit, and then according to the network connection status of the optical line terminal OLT and the service information of the ONU of the optical network unit, the passive Optical fiber network for business management, can temporarily proxy optical network unit management control interface virtualized network function OMCI when the optical network unit management control interface virtualized network function OMCI VNF network connection state is in an abnormal connection state
  • the work of the VNF or ONU of the optical network unit ensures that the services of the ONU of the optical network unit are carried out normally.
  • FIG. 1 is a schematic diagram of a passive optical network architecture based on virtualized network functions.
  • the passive optical network of the virtualized network function is mainly composed of three parts, namely the optical line terminal OLT, the ONU of the optical network unit and the virtualized network function OMCI VNF of the management and control interface of the optical network unit.
  • the optical network unit ONU and the optical network unit management control interface virtualized network function OMCI VNF is connected to the optical line terminal OLT remote network, and the service management instructions are issued to the optical line terminal OLT, and the optical line terminal OLT then transmits the service to each optical network.
  • the unit ONU implements service management for the ONU of the optical network unit.
  • an embodiment of the present application provides a service management method for a passive optical fiber network.
  • a schematic flowchart of a service management method for a passive optical network provided by an embodiment of the present application the service management method for a passive optical network provided by this embodiment at least includes:
  • Step S100 maintain a communication connection with the optical line terminal.
  • the manner of maintaining the communication connection with the optical line terminal may be communication between the internal modules of the optical line terminal OLT.
  • the optical line terminal OLT may also be a peripheral device, but locally connected to the OLT.
  • Step S200 Acquire the optical network unit management control interface frame data transmitted via the optical line terminal.
  • the optical line terminal OLT is used to issue the management information of each optical network unit ONU to the optical network unit management control interface virtualized network function OMCI VNF, and the user information obtained by each optical network unit ONU upload.
  • the data transmitted through the optical network unit management control interface OMCI is frame data, and these frame data include all the information transmitted between the optical line terminal OLT and the optical network unit ONU.
  • Step S300 Acquire service information of the optical network unit according to the frame data of the optical network unit management control interface.
  • the service information of the ONU of the optical network unit includes various types, such as registration information, security information, configuration information, and status information.
  • the service information includes service configuration information and service status information of each ONU.
  • Step S400 According to the network connection state of the optical line terminal and the service information of the optical network unit, perform service management on the passive optical fiber network.
  • the ONU service When the network status between the optical line terminal OLT and the optical network unit management control interface virtualization network function OMCI VNF changes, such as disconnecting from the normal connection state or restoring the normal connection from the disconnected state, the ONU service will be abnormal.
  • the network connection state of the optical line terminal OLT is first judged, and the service management of the passive optical network is performed according to the specific network connection state and in combination with the service information of the optical network unit obtained in step S300.
  • Service management includes service management on the ONU side or the OMCI VNF side.
  • the service management method of the passive optical fiber network can temporarily proxy the operation of the optical network unit management control interface to virtualize the network function OMCI VNF or the ONU of the optical network unit, so as to ensure the operation of the optical network unit.
  • the service of the network unit ONU is running normally.
  • a specific method for judging a network connection state according to a time threshold includes at least:
  • Step S401 Whether the optical network unit management control interface frame data has not been acquired for two or more consecutive link keep-alive periods.
  • each link keep-alive period is 3 seconds, that is, it is judged whether the optical network unit management control interface has not been acquired within 9 seconds frame data.
  • Step S402 If yes, determine that the network connection between the OMCI VNF and the OLT is interrupted.
  • Step S403 If not, it is judged that the network connection between the OMCI VNF and the OLT is normal.
  • FIG. 4 is a schematic flowchart of a service management method for a passive optical fiber network in a network interruption state provided by an embodiment of the present application, including at least:
  • Step S110 maintain a communication connection with the optical line terminal.
  • the module that maintains communication with the optical line terminal OLT is arranged outside the OLT and maintains a local connection with the OLT.
  • Step S210 Acquire the optical network unit management control interface frame data transmitted via the optical line terminal.
  • Step S310 Acquire service information of the optical network unit according to the frame data of the optical network unit management control interface.
  • the service configuration information and service status information of each ONU are obtained by parsing the OMCI frame data.
  • OMCI frame data the definition of management entity ME (Management Entity, ME for short) and the included data information, the relationship between different management entities ME can be based on the standard ITU-T G.988 "ONU management and control interface (OMCI) specification", so I won't go into details here.
  • Step S410 when the network connection state between the optical line terminal OLT and the optical network unit management control interface used to implement the virtualized network function changes from a normal connection to an interrupted state, request according to the optical network unit management control interface of the optical network unit. , to maintain the normal service processing of the optical network unit.
  • the passive optical fiber network service management device disposed outside the OLT maintains the normal service processing of the optical network unit according to the request of the optical network unit management control interface of the optical network unit.
  • the passive optical fiber network service management device responds to the OMCI request of the ONU in place of the OMCI VNF, and maintains the normal service of the ONU.
  • FIG. 5 is a schematic flowchart of a service management method for a passive optical fiber network in a network disconnection state provided by another embodiment of the present application, including at least:
  • Step S120 maintain a communication connection with the optical line terminal.
  • the module that maintains communication with the optical line terminal OLT is arranged inside the OLT, and as a functional module inside the OLT, it maintains a local connection with the OLT.
  • Step S220 Acquire the optical network unit management control interface frame data transmitted via the optical line terminal.
  • Step S320 Acquire service information of the optical network unit according to the frame data of the optical network unit management control interface.
  • the service configuration information and service status information of each ONU are obtained by parsing the OMCI frame data.
  • OMCI frame data the definition of management entity ME (Management Entity, ME for short) and the included data information, the relationship between different management entities ME can be based on the standard ITU-T G.988 "ONU management and control interface (OMCI) specification", so I won't go into details here.
  • Step S420 When the network connection state of the optical line terminal is restored from the interruption to the normal connection state, according to the service information of the optical network unit, perform the service information of the optical network unit on the management control interface of the optical network unit for realizing the virtualized network function. Synchronize.
  • the OMCI VNF when the optical line terminal OLT and the optical network unit management control interface OMCI VNF used to realize the virtualized network function change from disconnected to normal connection state, the OMCI VNF needs to not interfere with the normal operation of the ONU under the premise Fast synchronous update of ONU status during network outages.
  • a schematic diagram of a service information synchronization state judgment process provided by an embodiment of the present application includes at least:
  • Step S421 Whether a management information base MIB synchronization request from the OMCI VNF side is received.
  • the premise of executing the service information synchronization state judgment is that the network state changes from the interrupted state to the normal connection state.
  • Step S422 If no, forward the request of the optical network unit management control interface of the optical network unit to the optical network unit management control interface for realizing the virtualized network function.
  • the OMCI VNF at this time is not only connected to the OLT network normally, and the OMCI VNF has also obtained the ONU status information during the network interruption. Therefore, the OMCI VNF is used as a subsequent OMCI request.
  • the responder takes over the service management device of the passive optical network to perform service processing on the ONU, that is, the OMCI request of the ONU will be directly forwarded to the OMCI VNF by the service management device of the passive optical network.
  • Step S423 If yes, keep the normal service processing of the optical network unit according to the request of the optical network unit management control interface of the optical network unit.
  • the service processing may be abnormal because the OMCI VNF has not yet completed state synchronization.
  • the service management device of the network still handles it.
  • MIB management information base
  • an embodiment of the present application provides a service management device for a passive optical fiber network, as shown in FIG. 7 , including a communication module configured to maintain a communication connection with an optical line terminal; The optical network unit management control interface frame data transmitted by the terminal, and the interception module that obtains the service information of the optical network unit according to the optical network unit management control interface frame data; The optical network unit manages and controls the network connection state between the interfaces and the service information of the optical network unit, and is a service management module for service management of the passive optical fiber network.
  • the service management module when the network connection state of the optical line terminal OLT is in an interrupted state, performs service management on the optical network unit according to the service information of the optical network unit.
  • the optical network unit management control interface of the network unit ONU requests the OMCI to keep the normal service processing of the optical network unit.
  • the service management module when the network connection state of the optical line terminal OLT is restored to normal from the interruption, the service management module, according to the service information of the optical network unit ONU, manages the control interface OMCI for the optical network unit for realizing the virtualized network function.
  • the VNF synchronizes the service information of the optical network unit.
  • the service management module forwards the optical network unit management control interface request of the optical network unit to the user
  • the optical network unit management and control interface OMCI VNF for realizing virtualized network functions is then used for service management by the optical network unit management and control interface OMCI VNF for realizing virtualized network functions.
  • the service management module when the optical network unit management control interface for realizing the virtualized network function has not completed the synchronization of the service information of the optical network unit, the service management module requests according to the optical network unit management control interface of the optical network unit, Maintain normal service management of optical network units.
  • the service management device of the passive optical network in some embodiments is an independent device set outside the optical line terminal OLT, but is locally connected to the OLT, so its network connection status will not be affected by the OMCI VNF and the OLT. Influence of the network connection status between OLTs, the service management device is set between the OLT and the OMCI VNF.
  • the network When the network is interrupted, it replaces the OMCI VNF to perform service management on the ONU, and when the network returns to normal, it replaces the ONU and the OMCI VNF to perform synchronous update , until the synchronization is completed, and the service management is handed over to the OMCI VNF, and it returns to the listening mode.
  • the service management device of the passive optical network in some embodiments is set in the optical line terminal OLT, as a built-in function of the OLT, so the communication between the OLT and the OLT will not be affected by the communication between the OLT and the OMCI VNF. Influence of network connection status. When the network is interrupted, it replaces the OMCI VNF to perform service management on the ONU, and when the network returns to normal, it replaces the ONU to synchronously update the OMCI VNF until the synchronization is completed, and transfers the service management to the OMCI VNF, returning to the listening mode.
  • the embodiments of the present application further provide an optical line terminal, which at least includes the service management device of the passive optical fiber network according to the second aspect.
  • the embodiments of the present application further provide a computer-readable storage medium storing computer-executable instructions, where the computer-executable instructions are used to execute the method of the first aspect as described above.
  • the embodiments of the present application propose a service management method, device, optical line terminal, and storage medium based on a passive optical fiber network, which can obtain the management of the ONU of the optical network unit transmitted through the optical line terminal OLT by maintaining a communication connection with the optical line terminal OLT.
  • Control interface frame data and obtain the service information of the ONU of the optical network unit according to the frame data of the optical network unit management control interface OMCI, and then according to the network connection status of the optical line terminal OLT and the service information of the ONU of the optical network unit, the passive optical network is carried out.
  • Service management which can temporarily proxy the optical network unit management control interface virtualized network function OMCI VNF or optical network function OMCI VNF when the network connection status of the optical line terminal OLT and the optical network unit management control interface is in an abnormal connection state.
  • the ONU of the network unit ensures the normal operation of the business in the passive optical network.
  • 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 be composed of several physical components Components execute cooperatively.
  • Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit .
  • 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 both volatile and nonvolatile implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules or other data flexible, removable and non-removable media.
  • Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, magnetic disk storage or other magnetic storage devices, or may Any other medium used to store desired information and which can be accessed by a computer.
  • 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 can include any information delivery media, as is well known to those of ordinary skill in the art .

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Abstract

无源光纤网络的业务管理方法、装置、光线路终端及介质。该无源光纤网络的业务管理方法包括：与光线路终端保持通信连接(S110)；获取经由光线路终端传递的光网络单元管理控制接口帧数据(S210)；根据光网络单元管理控制接口帧数据获取光网络单元的业务信息(S310)；根据光线路终端与用于实现虚拟化网络功能的光网络单元管理控制接口之间的网络连接状态及所述光网络单元的业务信息，对所述无源光纤网络进行业务管理。

Description

无源光纤网络的业务管理方法、装置、光线路终端及介质
相关申请的交叉引用
本申请基于申请号为202010962900.X、申请日为2020年9月14日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及无源光纤网络，尤其涉及一种无源光纤网络的业务管理方法、装置、光线路终端及存储介质。
背景技术
随着网络功能虚拟化技术的发展，光线路终端OLT(Optical Line Terminal，简称OLT)中的网络功能由外部独立部署的虚拟化网络功能VNF(Virtualized Network Functions，简称VNF)来代替。光网络单元管理控制接口OMCI(ONU Management and Control Interface，简称OMCI)作为光线路终端OLT上管理光网络单元ONU(Optical Network Unit，简称ONU)的网络功能，被选择作为VNF对ONU进行管理，成为用于实现虚拟化网络功能的光网络单元管理控制接口OMCI VNF。
部署的光网络单元管理控制接口虚拟化网络功能OMCI VNF可以为光网络单元ONU管理带来诸多优势，但是由于光网络单元管理控制接口虚拟化网络功能OMCI VNF与光线路终端OLT为远程网络连接，因此存在连接中断的可能性。当光网络单元管理控制接口虚拟化网络功能OMCI VNF与光线路终端OLT的连接中断，会导致光网络单元ONU业务异常；而当光网络单元管理控制接口虚拟化网络功能OMCI VNF与光线路终端OLT的连接从中断恢复正常时，光网络单元管理控制接口虚拟化网络功能OMCI VNF为了刷新光网络单元ONU业务状态，需要根据光网络单元ONU的最新业务信息进行同步，会干扰光网络单元ONU的正常业务，同样会导致无源光纤网络的业务异常。
发明内容
本申请实施例提出一种无源光纤网络的业务管理方法、装置、光线路终端及存储介质。
本申请实施例提供了一种无源光纤网络的业务管理方法，所述无源光纤网络包括光线路终端、光网络单元及用于实现虚拟化网络功能的光网络单元管理控制接口，所述方法包括：与所述光线路终端保持通信连接；获取经由所述光线路终端传递的光网络单元管理控制接口帧数据；根据所述光网络单元管理控制接口帧数据获取所述光网络单元的业务信息；根据所述光线路终端与所述用于实现虚拟化网络功能的光网络单元管理控制接口之间的网络连接状态及所述光网络单元的业务信息，对所述无源光纤网络进行业务管理。
本申请实施例还提出了一种无源光纤网络的业务管理装置，所述装置包括通信模块，所述通信模块被设置成与光线路终端保持通信连接；侦听模块，所述侦听模块被设置成获取由所述光线路终端传递的光网络单元管理控制接口帧数据，并根据所述光网络单元管理控制接口帧数据获取所述光网络单元的业务信息；业务管理模块，所述业务管理模块被设置成根据 所述光线路终端的网络连接状态及所述光网络单元的业务信息，对所述无源光纤网络进行业务管理。
本申请实施例还提供了一种光线路终端，包括如前述的无源光纤网络的业务管理装置。
本申请实施例还提供了一种存储介质，用于计算机可读存储，所述存储介质存储有一个或者多个程序，所述一个或者多个程序可被一个或者多个处理器执行，以实现前述的无源光纤网络的业务管理方法。
本申请的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本申请而了解。本申请的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图说明
图1为基于虚拟化网络功能的无源光纤网络架构示意图；
图2为本申请一实施例提供的无源光纤网络的业务管理方法流程示意图；
图3为本申请一实施例提供的网络连接状态判断流程示意图；
图4为本申请一实施例提供的网络中断状态下的无源光纤网络的业务管理方法流程示意图；
图5为本申请另一实施例提供的网络断开状态下的无源光纤网络的业务管理方法流程示意图；
图6为本申请一实施例提供的业务信息同步状态判断流程示意图；
图7为本申请一实施例提供的无源光纤网络的业务管理装置模块示意图；
图8为本申请一实施例提供的无源光纤网络架构示意图；
图9为本申请另一实施例提供的无源光纤网络架构示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请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用以解释本申请，并不用于限定本申请。
需要说明的是，虽然在装置示意图中进行了功能模块划分，在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于装置中的模块划分，或流程图中的顺序执行所示出或描述的步骤。说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
本申请实施例的描述中，除非另有明确的限定，设置、安装、连接等词语应做广义理解，所属技术领域技术人员可以结合技术方案的具体内容合理确定上述词语在本申请实施例中的具体含义。
网络功能虚拟化NFV是使用通用IT软硬件以及虚拟化技术，用软件来实现原先由专业网络设备提供的网络功能，既可降低网络成本又可灵活扩展网络功能。NFV通过对专业通信设备的软硬件解耦及功能抽象，基于通用的计算、存储、网络设备使用软件来实现通信网络功能，从而使网络设备功能不再依赖于专用硬件，资源可以充分灵活共享，实现新业务的快速开发和部署，并基于实际业务需求进行自动部署、弹性伸缩、故障隔离和自愈等。
而基于无源光纤网络的发展，运营商已逐渐尝试将光线路终端OLT设备中的网络功能改 成外部独立部署的虚拟化网络功能VNF来代替，形成了用于实现虚拟化网络功能的光网络单元管理控制接口OMCI VNF。但是由于OMCI VNF与OLT设备为远程网络连接，因此存在连接中断的可能。一旦OMCI VNF与OLT设备的连接中断，OLT设备所接的ONU将失去管理者，造成业务异常；而当OMCI VNF与OLT设备的恢复连接后，OMCI VNF为了更新ONU工作状态，需要将于OLT设备连接的所有ONU全部同步一遍，可能会干扰ONU正常业务。
基于此，本申请实施例提供了一种无源光纤网络的业务管理方法、装置、光线路终端及存储介质，通过与光线路终端OLT保持通信连接，而获取经由光线路终端OLT传递的光网络单元ONU管理控制接口帧数据，并根据光网络单元管理控制接口OMCI帧数据获取光网络单元ONU的业务信息，进而根据光线路终端OLT的网络连接状态及光网络单元ONU的业务信息，对无源光纤网络进行业务管理，能够在光线路终端OLT与光网络单元管理控制接口虚拟化网络功能OMCI VNF网络连接状态处于非正常连接的状态下，通过暂时代理光网络单元管理控制接口虚拟化网络功能OMCI VNF或光网络单元ONU的工作，保证光网络单元ONU的业务正常进行。
下面结合附图，对本申请实施例作进一步阐述。
图1为基于虚拟化网络功能的无源光纤网络架构示意图。从图1中可知，虚拟化网络功能的无源光纤网络主要由三部分组成，分别为光线路终端OLT、光网络单元ONU以及光网络单元管理控制接口虚拟化网络功能OMCI VNF。光网络单元ONU以及光网络单元管理控制接口虚拟化网络功能OMCI VNF与光线路终端OLT远程网络连接，将业务管理指令下发至光线路终端OLT，光线路终端OLT进而将业务传送至各个光网络单元ONU，实现对光网络单元ONU进行业务管理。
第一方面，本申请实施例提供了一种无源光纤网络的业务管理方法。如图2所示，为本申请一实施例提供的无源光纤网络的业务管理方法流程示意图，本实施例提供的无源光纤网络的业务管理方法至少包括：
步骤S100：与光线路终端保持通信连接。
在本实施例中，与光线路终端保持通信连接的方式可以为光线路终端OLT内部模块之间的通信。而在其他实施例中，也可以为外设于光线路终端OLT，但与OLT本地连接。
步骤S200：获取经由光线路终端传递的光网络单元管理控制接口帧数据。
在本申请的实施例中，光线路终端OLT用于对光网络单元管理控制接口虚拟化网络功能OMCI VNF对各个光网络单元ONU的管理信息的下发，以及各个光网络单元ONU获得的用户信息的上传。而通过光网络单元管理控制接口OMCI传输的数据为帧数据，这些帧数据中包括了所有光线路终端OLT与光网络单元ONU之间传输的信息。
步骤S300：根据光网络单元管理控制接口帧数据获取光网络单元的业务信息。
光网络单元ONU的业务信息包括多种，例如注册信息、安全信息、配置信息和状态信息等。在本实施例中，业务信息包括每个ONU的业务配置信息和业务状态信息。
步骤S400：根据光线路终端的网络连接状态及光网络单元的业务信息，对无源光纤网络进行业务管理。
当光线路终端OLT与光网络单元管理控制接口虚拟化网络功能OMCI VNF之间的网络状态发生改变时，例如从正常连接状态断开或从断开状态恢复正常连接，会导致ONU的业务异常。
因此，在本实施例中，先判断光线路终端OLT的网络连接状态，根据具体的网络连接状态，结合在步骤S300中获得的光网络单元的业务信息，对无源光纤网络进行业务管理，上述 业务管理包含对ONU侧或OMCI VNF侧的业务管理。
在网络状态异常或网络状态发生改变时，本实施例提供的无源光纤网络的业务管理方法能够通过暂时代理光网络单元管理控制接口虚拟化网络功能OMCI VNF或光网络单元ONU的工作，保证光网络单元ONU的业务正常进行。
在本实施例中，提供了一种根据时间阈值判断网络连接状态的具体方法。如图3所示，至少包括：
步骤S401：是否连续两个及以上链路保活周期未获取光网络单元管理控制接口帧数据。
在本实施例中，假设选取3个链路保活周期作为判断网络状态的时间阈值，且每个链路保活周期为3秒，即判断在9秒内是否未获取光网络单元管理控制接口帧数据。
步骤S402：若是，则判断OMCI VNF和OLT之间的网络连接中断。
步骤S403：若否，则判断OMCI VNF和OLT之间的网络连接正常。
本领域技术人员可知，上述采用链路保活周期作为时间阈值的判断方法仅为一种情况，其它直接设置时间阈值进行判断等方式均可作为本申请实施例。
图4为本申请一实施例提供的网络中断状态下的无源光纤网络的业务管理方法流程示意图，至少包括：
步骤S110：与光线路终端保持通信连接。
在本实施例中，与光线路终端OLT保持通信的模块设置于OLT外部，与OLT保持本地连接。
步骤S210：获取经由光线路终端传递的光网络单元管理控制接口帧数据。
步骤S310：根据光网络单元管理控制接口帧数据获取光网络单元的业务信息。
在本实施例中，通过解析OMCI帧数据获得每个ONU的业务配置信息和业务状态信息。本领域技术知晓，关于OMCI帧数据定义、管理实体ME(Management Entity，简称ME)定义和所包含的数据信息、不同管理实体ME之间的关系可以根据标准ITU-T G.988《ONU management and control interface(OMCI)specification》得知，在此不做赘述。
步骤S410：当光线路终端OLT与用于实现虚拟化网络功能的光网络单元管理控制接口之间的网络连接状态从正常连接变为中断状态时,根据光网络单元的光网络单元管理控制接口请求，保持光网络单元的正常业务处理。
在本实施例中，当光线路终端OLT与用于实现虚拟化网络功能的光网络单元管理控制接口OMCI VNF从正常连接变为中断状态时，导致OMCI VNF不能通过OLT对ONU进行业务管理，此时，设置在OLT外部的无源光纤网络业务管理装置根据光网络单元的光网络单元管理控制接口请求，保持光网络单元的正常业务处理。
具体地，无源光纤网络业务管理装置代替OMCI VNF响应ONU的OMCI请求，维持ONU的正常业务进行。
图5为本申请另一实施例提供的网络断开状态下的无源光纤网络的业务管理方法流程示意图，至少包括：
步骤S120：与光线路终端保持通信连接。
在本实施例中，与光线路终端OLT保持通信的模块设置于OLT内部，作为OLT内部的一个功能模块，与OLT保持本地连接。
步骤S220：获取经由光线路终端传递的光网络单元管理控制接口帧数据。
步骤S320：根据光网络单元管理控制接口帧数据获取光网络单元的业务信息。
在本实施例中，通过解析OMCI帧数据获得每个ONU的业务配置信息和业务状态信息。本领域技术知晓，关于OMCI帧数据定义、管理实体ME(Management Entity，简称ME)定义和所包含的数据信息、不同管理实体ME之间的关系可以根据标准ITU-T G.988《ONU management and control interface(OMCI)specification》得知，在此不做赘述。
步骤S420：当光线路终端的网络连接状态从中断恢复正常连接状态时,根据光网络单元的业务信息，对用于实现虚拟化网络功能的光网络单元管理控制接口进行光网络单元的业务信息的同步。
在本实施例中，当光线路终端OLT与用于实现虚拟化网络功能的光网络单元管理控制接口OMCI VNF从中断连接变为正常连接状态时，OMCI VNF需要在不干扰ONU正常工作的前提下对网络中断期间内的ONU状态进行快速地同步更新。
在同步更新完成或未完成的状态下，如果又出现来自ONU的新的OMCI请求，则需要对上述OMCI请求做出不同的处理策略，具体判断及处理策略见图6的业务信息同步状态判断流程示意图。
如图6所示，本申请一实施例提供的业务信息同步状态判断流程示意图，至少包括：
步骤S421：是否接收到来自OMCI VNF侧的管理信息库MIB同步请求。
在本实施例中，执行业务信息同步状态判断的前提是网络状态由中断状态转变为正常连接状态。通过判断无源光纤网络的业务管理装置是否还能接收到来自OMCI VNF侧的MIB管理信息库同步请求，判断业务信息同步是否完成，确定后续的OMCI请求的回应响应主体。
步骤S422：若否，转发所述光网络单元的光网络单元管理控制接口请求至所述用于实现虚拟化网络功能的光网络单元管理控制接口。
在本实施例中，若业务信息同步已完成，那么此时的OMCI VNF不仅与OLT网络连接正常，且OMCI VNF也已获得网络中断期间的ONU状态信息，因此，OMCI VNF作为后续的OMCI请求的响应者，接替无源光纤网络的业务管理装置对ONU进行业务处理，即ONU的OMCI请求将被无源光纤网络的业务管理装置直接转发给OMCI VNF。
步骤S423：若是，根据光网络单元的光网络单元管理控制接口请求，保持光网络单元的正常业务处理。
在本实施例中，当业务信息同步未完成，即使OMCI VNF即使与OLT网络连接正常时，但直接转发给OMCI VNF的话可能会因为OMCI VNF尚未完成状态同步而造成业务处理异常，因此无源光纤网络的业务管理装置仍然代为处理。
通过对是否接收到来自OMCI VNF侧的管理信息库MIB(Management Information Base，简称MIB)同步请求，实现对OMCI VNF业务信息同步状态的判断，能够保证后续对来自ONU的OMCI请求的有效处理，避免因同步未完成而导致的业务处理异常，而在同步完成后转交给MCI VNF处理，也能提高无源光纤网络的业务管理效率。
第二方面，本申请的实施例提供了一种无源光纤网络的业务管理装置，如图7所示，包括被设置成与光线路终端保持通信连接的通信模块；被设置成获取由光线路终端传递的光网络单元管理控制接口帧数据，并根据光网络单元管理控制接口帧数据获取光网络单元的业务信息的侦听模块；以及被设置成根据光线路终端与用于实现虚拟化网络功能的光网络单元管理控制接口之间的网络连接状态及光网络单元的业务信息，对无源光纤网络进行业务管理的业务管理模块。
在一些实施例中，当光线路终端OLT的网络连接状态为中断状态时，则业务管理模块根 据光网络单元的业务信息，对光网络单元进行业务管理，这些业务管理具体包括业务管理模块根据光网络单元ONU的光网络单元管理控制接口请求OMCI，以保持光网络单元的正常业务处理。
在一些实施例中，当光线路终端OLT的网络连接状态由中断恢复正常时，则业务管理模块根据光网络单元ONU的业务信息，对用于实现虚拟化网络功能的光网络单元管理控制接口OMCI VNF进行光网络单元的业务信息的同步。
在一些实施例中，当用于实现虚拟化网络功能的光网络单元管理控制接口完成光网络单元的业务信息的同步时，则业务管理模块转发光网络单元的光网络单元管理控制接口请求至用于实现虚拟化网络功能的光网络单元管理控制接口OMCI VNF，那么接下来由用于实现虚拟化网络功能的光网络单元管理控制接口OMCI VNF进行业务管理。
在一些实施例中，当用于实现虚拟化网络功能的光网络单元管理控制接口未完成光网络单元的业务信息的同步时，则业务管理模块根据光网络单元的光网络单元管理控制接口请求，保持光网络单元的正常业务管理。
如图8所示，一些实施例中的无源光纤网络的业务管理装置是设置在光线路终端OLT外的独立装置，但与OLT进行本地连接，因此其网路连接状态不会受到OMCI VNF与OLT之间的网络连接状态的影响，业务管理装置设置在OLT与OMCI VNF之间，在网络中断时代替OMCI VNF对ONU进行业务管理，而当网络恢复正常时，代替ONU与OMCI VNF进行同步更新，直至同步完成，并将业务管理移交至OMCI VNF，恢复至侦听模式。
如图9所示，一些实施例中的无源光纤网络的业务管理装置是设置在光线路终端OLT内的，作为OLT的内置功能，因此其与OLT的通信不会受到OLT与OMCI VNF之间网络连接状态的影响。在网络中断时代替OMCI VNF对ONU进行业务管理，而当网络恢复正常时，代替ONU与OMCI VNF进行同步更新，直至同步完成，并将业务管理移交至OMCI VNF，恢复至侦听模式。
第三方面，本申请的实施例还提供了一种光线路终端，至少包括如第二方面的无源光纤网络的业务管理装置。
第四方面，本申请的实施例还提供了一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行如上所述第一方面的方法。
本申请实施例提出了基于无源光纤网络的业务管理方法、装置、光线路终端及存储介质，能够通过与光线路终端OLT保持通信连接，而获取经由光线路终端OLT传递的光网络单元ONU管理控制接口帧数据，并根据光网络单元管理控制接口OMCI帧数据获取光网络单元ONU的业务信息，进而根据光线路终端OLT的网络连接状态及光网络单元ONU的业务信息，对无源光纤网络进行业务管理，能够在光线路终端OLT与光网络单元管理控制接口虚拟化网络功能OMCI VNF网络连接状态处于非正常连接的状态下，通过暂时代理光网络单元管理控制接口虚拟化网络功能OMCI VNF或光网络单元ONU，保证无源光纤网络中业务的正常进行。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统、设备中的功能模块/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、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、程序模块或其他数据)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RAM、ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者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他的介质。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他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。
以上参照附图说明了本申请的一些实施例，并非因此局限本申请的权利范围。本领域技术人员不脱离本申请的范围和实质内所作的任何修改、等同替换和改进，均应在本申请的权利范围之内。

Claims (11)

  1. 一种无源光纤网络的业务管理方法，所述无源光纤网络包括光线路终端、光网络单元及用于实现虚拟化网络功能的光网络单元管理控制接口，所述方法包括：
    与所述光线路终端保持通信连接；
    获取经由所述光线路终端传递的光网络单元管理控制接口帧数据；
    根据所述光网络单元管理控制接口帧数据获取所述光网络单元的业务信息；
    根据所述光线路终端与所述用于实现虚拟化网络功能的光网络单元管理控制接口之间的网络连接状态及所述光网络单元的业务信息，对所述无源光纤网络进行业务管理。
  2. 根据权利要求1所述的方法，其中，所述根据所述光线路终端与所述用于实现虚拟化网络功能的光网络单元管理控制接口之间的网络连接状态及所述光网络单元的业务信息，对所述无源光纤网络进行业务管理包括：
    当所述光线路终端与所述用于实现虚拟化网络功能的光网络单元管理控制接口之间的网络连接状态为中断状态时，根据所述光网络单元的业务信息，对所述光网络单元进行业务管理。
  3. 根据权利要求2所述的方法，其中，所述对所述光网络单元进行业务管理包括：
    根据所述光网络单元的光网络单元管理控制接口请求，保持所述光网络单元的正常业务处理。
  4. 根据权利要求1所述的方法，其中，所述根据所述光线路终端与所述用于实现虚拟化网络功能的光网络单元管理控制接口之间的网络连接状态及所述光网络单元的业务信息，对所述无源光纤网络进行业务管理包括：
    当所述光线路终端与所述用于实现虚拟化网络功能的光网络单元管理控制接口之间的网络连接状态由中断恢复正常时，根据所述光网络单元的业务信息，对所述用于实现虚拟化网络功能的光网络单元管理控制接口进行所述光网络单元的业务信息的同步。
  5. 根据权利要求4所述的方法，其中，当所述用于实现虚拟化网络功能的光网络单元管理控制接口完成所述光网络单元的业务信息的同步时，转发所述光网络单元的光网络单元管理控制接口请求至所述用于实现虚拟化网络功能的光网络单元管理控制接口。
  6. 根据权利要求4所述的方法，其中，当所述用于实现虚拟化网络功能的光网络单元管理控制接口未完成所述光网络单元的业务信息的同步时，根据所述光网络单元的光网络单元管理控制接口请求，保持所述光网络单元的正常业务处理。
  7. 根据权利要求1所述的方法，其中，当在时间阈值内未获取到所述经由所述光线路终端传递的光网络单元管理控制接口帧数据时，网络状态为连接中断状态；否则，网络状态为连接正常状态。
  8. 根据权利要求1至7任一项所述的方法，其中，所述光网络单元的业务信息包括业务配置信息和业务状态信息。
  9. 一种无源光纤网络的业务管理装置，包括：
    通信模块，所述通信模块被设置成与光线路终端保持通信连接；
    侦听模块，所述侦听模块被设置成获取由所述光线路终端传递的光网络单元管理控制接口帧数据，并根据所述光网络单元管理控制接口帧数据获取所述光网络单元的业务信息；
    业务管理模块，所述业务管理模块被设置成根据所述光线路终端与用于实现虚拟化网络功能的光网络单元管理控制接口之间的网络连接状态及所述光网络单元的业务信息，对所述无源光纤网络进行业务管理。
  10. 一种光线路终端，包括如权利要求9所述的无源光纤网络的业务管理装置。
  11. 一种存储介质，用于计算机可读存储，其中，所述存储介质存储有一个或者多个程序，所述一个或者多个程序可被一个或者多个处理器执行，以实现权利要求1至8任意一项所述的无源光纤网络的业务管理方法。
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