WO2021004471A1 - Wdm-pon system and management and control method therefor - Google Patents

Wdm-pon system and management and control method therefor Download PDF

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Publication number
WO2021004471A1
WO2021004471A1 PCT/CN2020/100794 CN2020100794W WO2021004471A1 WO 2021004471 A1 WO2021004471 A1 WO 2021004471A1 CN 2020100794 W CN2020100794 W CN 2020100794W WO 2021004471 A1 WO2021004471 A1 WO 2021004471A1
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Prior art keywords
optical
signal
transmission unit
wavelength
olt
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PCT/CN2020/100794
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French (fr)
Chinese (zh)
Inventor
刘新峰
张勇
王志军
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烽火通信科技股份有限公司
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Publication of WO2021004471A1 publication Critical patent/WO2021004471A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0254—Optical medium access
    • H04J14/0272—Transmission of OAMP information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects

Definitions

  • the invention relates to the technical field of WDM-PON access, in particular to a WDM-PON system and its management and control method.
  • 5G network research has formed the first wave, entering the critical stage of technical standard research and research and development test.
  • 5G networks have significantly improved performance in terms of throughput, latency, and number of connections.
  • fronthaul networks such as dense fiber deployment, higher transmission bandwidth, and lower latency. new demand.
  • WR-WDM-PON Wivelength Routed-Wavelength Division Multiplexing-Passive Optical Network
  • WR Wivelength Routed, wavelength routing
  • WDM Wivelength Division Multiplexing, wavelength division multiplexing
  • PON Passive Optical Network, passive optical network
  • WR-WDM-PON is composed of OLT (Optical Line Terminal), ODN (Optical Distribution Network, Optical Distribution Network) and CFM (Cellular Fronthaul Module, mobile fronthaul small pluggable module) ONUs, of which the OLT is mainly composed of The main control unit and WM (wavelength multiplexer, wavelength multiplexer) are composed.
  • WM is a bidirectional functional unit used to provide multiplexing/demultiplexing functions between WR-WDM-PON wavelength channel pairs and channel groups.
  • ODN includes fiber feeder section, WM and branch fiber.
  • the working wavelength of CFM in WR-WDM-PON is determined by the physical connection of CFM in ODN, that is, which branch is connected to AAWG (Athermal Arrayed Waveguide Grating) in ODN.
  • AAWG Athermal Arrayed Waveguide Grating
  • the working wavelength of each OLT SNI side OM is also determined by the physical connection, that is, which branch of the WM device connected to the OLT side is determined.
  • each channel occupies a pair of wavelengths independently. Therefore, in the backbone fiber, there are multiple optical signals with different wavelengths in the upstream direction and the downstream direction, and the total upstream bandwidth and the total downstream bandwidth both reach Tbit/s. It is particularly difficult to receive and send low-speed management data in such high-speed optical signals, which seriously affects the management and maintenance of OM and CFM by the OLT.
  • the purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a WDM-PON system and its management and control method, which does not affect the original high-speed data optical signal transmission in the WDM-PON system, and realizes the reception of high-speed optical signals. And send low-speed management data, manage and maintain CFM and OM.
  • a WDM-PON system which is applied to 5G fronthaul services.
  • the system includes optical line terminal OLT, optical distribution network ODN, wavelength tunable and controllable optical module OM, distribution unit DU, and mobile fronthaul small pluggable Unplug the module CFM and active antenna processing unit AAU, of which:
  • the OM is inserted into the card slot of the DU, and the OM is connected to the OLT;
  • the wavelength of CFM is adjustable, inserted in the card slot of AAU, CFM is connected with ODN;
  • the OLT includes a main control unit and an optical path management control unit.
  • the upstream optical signal and the downstream optical signal inside the optical path management control unit are transmitted separately and managed separately to realize the reception and transmission of low-speed management data in the high-speed optical signal.
  • the main control unit and optical path management control The units jointly control the optical transmission unit, and the optical transmission unit is OM or CFM.
  • the optical path management control unit includes: a downlink management information input port, a first signal transmitter, a first optical amplifier, and a first tunable filter ,
  • the upstream management information output port, the second combiner/demultiplexer, the path of management information and data flow include:
  • the first path downstream management information input port, first signal transmitter, first optical amplifier, first combiner/demultiplexer;
  • Second path second multiplexer/demultiplexer, first optical amplifier, first tunable filter, first signal receiver, downstream management information output port;
  • Third path upstream management information input port, second signal transmitter, second optical amplifier, second combiner/demultiplexer;
  • the fourth path the first multiplexer/demultiplexer, the second optical amplifier, the second tunable filter, the second signal receiver, and the upstream management information output port.
  • the first optical amplifier and the second optical amplifier each include an input port, a top adjustment unit, a signal amplifier, Signal monitor, output port, among them:
  • the input port of the first optical amplifier receives the downstream optical signal from the second multiplexer/demultiplexer; the input port of the second optical amplifier receives the upstream optical signal from the first multiplexer/demultiplexer;
  • the top adjustment unit uses the bias current to adjust the power level of the optical signal in the signal amplifier, and loads the management information carried by the low-speed electrical signal onto the optical signal for transmission;
  • the signal monitor sends the optical signal from the signal amplifier to the output port, performs a splitting operation on the optical signal, and sends a portion of the split optical signal to the first tunable filter/the second tunable filter;
  • the output port of the first optical amplifier sends the downstream optical signal to the first combiner/demultiplexer; the output port of the second optical amplifier sends the upstream optical signal to the second combiner/demultiplexer.
  • the main control unit sends management information to the optical path management through the downstream management information input port and the upstream management information input port.
  • the control unit processes, through the downstream management information output port and the upstream management information output port, receives the data information mirrored and output by the optical path management control unit for analysis and processing.
  • the OLT further includes a wavelength multiplexer WM, and the OM is connected to the OLT WM branch through an optical fiber; one end of the optical path management control unit is connected to the WM, and the other One end is connected to ODN.
  • the ODN is composed of an athermal waveguide array grating AAWG, the ODN is connected to the OLT through an optical fiber, and the CFM is connected to the ODN AAWG branch through an optical fiber.
  • the OLT is connected to the network element management system EMS through the network, and the user sends management tasks to the OLT through the EMS.
  • WDM-PON system for management and control.
  • the management and control of the WDM-PON system includes the following steps:
  • the task list is sent to the OLT through the EMS, and the main control unit of the OLT stores the received task order in the queue; the main control unit of the OLT obtains the task order from the queue, Process the acquired task list.
  • control of the optical transmission unit by the main control unit of the OLT through the path of management information and data flow is respectively :
  • the first path used to set CFM
  • the second path used to read the OM
  • the third path used to set OM
  • the fourth path used to read CFM.
  • a method for managing and controlling a WDM-PON system applied to the sixth possible implementation of the first aspect including the following steps:
  • the task list is sent to the OLT through EMS, and the main control unit of the OLT stores the received task list in the queue;
  • the main control unit of the OLT obtains the task order from the queue and processes the obtained task order.
  • the main control unit Before managing and controlling the OM and CFM in the WDM-PON system, initialize the OLT: the main control unit establishes an optical transmission unit information storage table, which stores: the ID, SN, transmission wavelength range, and reception of the optical transmission unit Wavelength range, current sending wavelength, current receiving wavelength, sending optical power, receiving optical power, voltage, current, temperature, rate level, presence information;
  • Polling obtains the information of each optical transmission unit in the full wavelength range, and stores the obtained information in the optical transmission unit information storage table.
  • processing the acquired task list includes the following steps:
  • the obtained task list is a setting task, when setting the configuration of an optical transmission unit in the WDM-PON system, query the optical transmission unit information storage table to obtain the ID number of the optical transmission unit and the current receiving wavelength ⁇ ';
  • the main control unit of the OLT sends the management setting information to the signal transmitter.
  • the management setting information is carried in the low-speed electrical signal, and the signal transmitter sends the low-speed electrical signal to the top adjustment unit of the optical amplifier;
  • the top adjustment unit of the optical amplifier loads the management information carried by the low-speed electrical signal onto the optical signal with a wavelength of ⁇ 'for transmission, and the signal amplifier of the optical amplifier amplifies the optical signal power and sends it out;
  • the optical signal is transmitted to the optical transmission unit in the optical fiber through WM or AAWG, and the optical transmission unit receives the optical signal and processes the management setting message.
  • the optical transmission unit when the optical transmission unit is OM, the current reception wavelength ⁇ 'of the optical transmission unit corresponds to the third path The upstream wavelength;
  • the current reception wavelength ⁇ 'of the optical transmission unit is the downlink wavelength corresponding to the first path.
  • processing the acquired task list includes the following steps:
  • the main control unit of the OLT queries the optical transmission unit information storage table to obtain the ID number and current sending wavelength of the optical transmission unit ⁇ ;
  • the main control unit of the OLT sets a tunable filter to filter out the optical signal with wavelength ⁇ from the optical signal with multiple wavelengths, and the tunable filter transmits the optical signal with wavelength ⁇ to the signal receiver;
  • the signal receiver completes photoelectric conversion, converts the optical signal with wavelength ⁇ into electrical signal, and outputs low-speed electrical signal;
  • the main control unit receives the low-speed electrical signal, processes the messages in the low-speed electrical signal, and feeds back the inquired information to the user through the EMS.
  • the current transmission wavelength ⁇ of the optical transmission unit is corresponding to the second path Downstream wavelength
  • the current transmission wavelength ⁇ of the optical transmission unit is the uplink wavelength corresponding to the fourth path.
  • the OLT contains an optical path management control unit, one end of which is connected to the WM and the other end to the ODN.
  • the uplink optical signal and the downlink optical signal inside the optical path management control unit are transmitted separately, and are monitored and managed separately, and the uplink optical signal and the downlink optical signal are combined or separated by the combiner/demultiplexer at both ends.
  • the invention realizes the reception and transmission of low-speed management data in high-speed optical signals without affecting the transmission of high-speed data optical signals of the WDM-PON system, can effectively manage and maintain OM and CFM, and significantly improves WDM PON's 5G fronthaul service The convenience and efficiency of China's operation and maintenance have reduced operation and maintenance costs.
  • Figure 1 is a schematic diagram of WDM-PON application networking in an embodiment of the present invention
  • FIG. 2 is a diagram of the application architecture of WDM-PON in an embodiment of the present invention.
  • Figure 3 is a structural diagram of a light path management control unit in a WDM-PON system in an embodiment of the present invention
  • FIG. 5 is a processing flowchart of a task list in an embodiment of the present invention.
  • Fig. 6 is a processing flowchart of a SET task list in an embodiment of the present invention.
  • Fig. 7 is a processing flowchart of a GET task list in an embodiment of the present invention.
  • Fig. 1 is an application networking diagram of WDM-PON according to an embodiment of the present invention.
  • an embodiment of the present invention provides a WDM-PON system, which can be applied to 5G fronthaul services.
  • the WDM-PON system includes optical line terminal OLT, optical distribution network ODN, distributed unit DU (Distributed Unit), active antenna processing unit AAU (Active Antenna Unit, active antenna processing unit), WDM-PON OLT SNI (Service The Node Interface (Service Node Interface) side port is connected to the DU through an optical fiber, and the PON side port of the WDM-PON OLT is connected to the ODN main fiber through an optical fiber.
  • OLT optical line terminal
  • ODN optical distribution network
  • distributed unit DU Distributed Unit
  • active antenna processing unit AAU Active Antenna Unit, active antenna processing unit
  • WDM-PON OLT SNI Service The Node Interface (Service Node Interface) side port is connected to the DU through an optical fiber
  • the OLT is connected to an EMS (Element Management System: Element Management System) through a network, and the user can send management tasks to the OLT through the EMS to manage and control the entire WDM-PON system.
  • EMS Element Management System: Element Management System
  • Fig. 2 is an application architecture diagram of WDM-PON according to an embodiment of the present invention.
  • the WDM-PON system also includes a wavelength tunable and controllable optical module OM and a mobile fronthaul small pluggable module CFM.
  • the OLT includes a main control unit, an optical path management control unit and a wavelength multiplexer WM, and optical path management control One end of the unit is connected to WM, and the other end is connected to ODN.
  • the uplink optical signal and the downlink optical signal inside the optical path management control unit are separately transmitted and managed separately to realize the reception and transmission of low-speed management data in the high-speed optical signal.
  • the main control unit and the optical path management control unit jointly control the optical transmission unit.
  • the optical transmission The unit is OM or CFM.
  • the ODN is composed of athermal waveguide array grating AAWG, and the ODN branch is connected to the CFM through an optical fiber.
  • the OM is a wavelength tunable and controllable optical module, which is inserted into the card slot of the distribution unit DU, and the OM is connected to the OLT WM branch through an optical fiber.
  • CFM is a small pluggable mobile fronthaul module with adjustable wavelength. It is inserted into the card slot of the active antenna processing unit AAU. The CFM is connected to the ODN AAWG branch through an optical fiber.
  • Fig. 3 is a structural diagram of an optical path management control unit in a WDM-PON system according to an embodiment of the present invention.
  • the optical path management control unit includes: a downstream management information input port, a first signal transmitter, a first optical amplifier, a first tunable filter, a first signal receiver, and a downstream management Information output port, first combiner/demultiplexer, upstream management information input port, second signal transmitter, second optical amplifier, second tunable filter, second signal receiver, upstream management information output port, second combiner Demultiplexer, power supply, software interface, etc.
  • the path of management information and data flow includes:
  • the first path downstream management information input port, first signal transmitter, first optical amplifier, first combiner/demultiplexer;
  • Second path second multiplexer/demultiplexer, first optical amplifier, first tunable filter, first signal receiver, downstream management information output port;
  • Third path upstream management information input port, second signal transmitter, second optical amplifier, second combiner/demultiplexer;
  • the fourth path the first multiplexer/demultiplexer, the second optical amplifier, the second tunable filter, the second signal receiver, and the upstream management information output port.
  • the main control unit sends management information to the optical path management control unit for processing through the downstream management information input port and the upstream management information input port, and receives the mirror output of the optical path management control unit through the downstream management information output port and the upstream management information output port. Analysis and processing of data information.
  • the first signal transmitter may send the low-speed electrical signal carrying the management information input from the downstream management information input port to the top adjustment unit of the first optical amplifier.
  • the second signal transmitter may send the low-speed electrical signal carrying the management information input from the upstream management information input port to the top adjustment unit of the second optical amplifier.
  • the first signal receiver can convert the optical signal carrying the management information into an electric signal, and send the low-speed electric signal carrying the management information to the downstream management information output port.
  • the second signal receiver can convert the optical signal carrying the management information into an electric signal, and send the low-speed electric signal carrying the management information to the upstream management information output port.
  • the first signal receiver and the second signal receiver complete the conversion of optical signals into electrical signals through PD (Photo Diode, photodiode).
  • PD is a device that converts light to electricity and detects light signals.
  • the first tunable filter and the second tunable filter have the functions of filtering out the optical signal of the specified wavelength, electronically programmable, bandwidth and wavelength independently adjustable, etc., with extremely steep edge characteristics up to 400dB/nm, suitable for wavelength tuning , ASE (Amplifier Spontaneousemission, amplifier spontaneous emission) noise suppression, pulse shaping, coherent light source, etc.
  • ASE Anamplifier Spontaneousemission, amplifier spontaneous emission
  • the first combiner/demultiplexer and the second combiner/demultiplexer are used to combine or separate the upstream optical signal and the downstream optical signal, and are capable of combining a series of optical signals carrying information but with different wavelengths into one beam along a single optical fiber Transmission also has the function of separating optical signals of different wavelengths in a beam of optical signals.
  • Both the first optical amplifier and the second optical amplifier include an input port, a top adjustment unit, a signal amplifier, a signal monitor, and an output port, among which:
  • the input port of the first optical amplifier receives the downstream optical signal from the second combiner/demultiplexer; the input port of the second optical amplifier receives the upstream optical signal from the first combiner/demultiplexer.
  • the top adjustment unit of the first optical amplifier can use the bias current to adjust the power level of the optical signal in the signal amplifier of the first optical amplifier, so that the management information carried by the low-speed electrical signal can be loaded onto the optical signal for transmission.
  • the top adjustment unit of the second optical amplifier can use the bias current to adjust the power level of the optical signal in the signal amplifier of the second optical amplifier, so that the management information carried by the low-speed electrical signal can be loaded onto the optical signal for transmission.
  • the signal amplifier of the first optical amplifier and the signal amplifier of the second optical amplifier mainly include EDFA (Erbium-Doped Optical Fiber Amplifier), SOA (Semiconductor Optical Amplifier, Semiconductor Optical Amplifier), and FRA (Fiber Raman Amplifier)
  • EDFA Erbium-Doped Optical Fiber Amplifier
  • SOA semiconductor Optical Amplifier
  • FRA Field Raman Amplifier
  • the signal amplifier of the first optical amplifier and the signal amplifier of the second optical amplifier mainly have three different uses: as a power amplifier on the transmitter side to improve the transmitter Used as an optical pre-amplifier before the receiver to greatly improve the sensitivity of the optical receiver; as a relay amplifier in the optical fiber transmission line to compensate for optical fiber transmission loss and extend the transmission distance.
  • the signal amplifier of the first optical amplifier and the signal amplifier of the second optical amplifier can not only directly amplify optical signals, but also have real-time, high-gain, broadband, online, low-noise, and low-loss all-optical amplification functions.
  • the signal monitor of the first optical amplifier sends the optical signal from the signal amplifier of the first optical amplifier to the output port of the first optical amplifier, and at the same time performs optical splitting operation on the optical signal, the splitting ratio can be adjusted, and the split optical signal Send to the first tunable filter.
  • the signal monitor of the second optical amplifier sends the optical signal from the signal amplifier of the second optical amplifier to the output port of the second optical amplifier, and at the same time performs optical splitting operation on the optical signal, the splitting ratio can be adjusted, and the split optical signal Send to the second tunable filter.
  • the output port of the first optical amplifier sends the downstream optical signal to the first combiner/demultiplexer; the output port of the second optical amplifier sends the upstream optical signal to the second combiner/demultiplexer.
  • the power supply is connected to an external power supply, and the power supply of the input optical path management control unit is adjusted to meet the power-on specification of the optical path management control unit and provide power for the optical path management control unit.
  • the software interface provides a standard two-wire I2C (Inter Integrated Circuit, integrated circuit bus) interface, a four-wire SPI (Serial Peripheral Interface) interface and an MDIO (Management Data Input/Output, management data input and output) interface.
  • the light path management control unit controls, reads and writes the internal registers of the light path management control unit.
  • the uplink optical signal and the downlink optical signal inside the optical path management control unit are transmitted separately, and are monitored and managed separately, and the uplink optical signal and the downlink optical signal are combined or separated by the combiner/demultiplexer at both ends.
  • the management and control of the WDM-PON system includes the following steps:
  • the task list is sent to the OLT through the EMS, and the main control unit of the OLT stores the received task order in the queue; the main control unit of the OLT obtains the task order from the queue, Process the acquired task list.
  • the main control unit of the OLT manages and controls the optical transmission unit through the path of management information and data flow as follows:
  • the first path used to set CFM
  • the second path used to read the OM
  • the third path used to set OM
  • the fourth path used to read CFM.
  • the embodiment of the present invention also provides a management and control method applied to the above WDM-PON system, including the following steps:
  • the task list is sent to the OLT through the EMS, and the main control unit of the OLT stores the received task order in the queue; the main control unit of the OLT obtains the task order from the queue, Process the acquired task list.
  • the above method further includes the following steps:
  • the main control unit Before managing and controlling the OM and CFM in the WDM-PON system, initialize the OLT: the main control unit establishes an optical transmission unit information storage table, which stores: the ID, SN, transmission wavelength range, and reception of the optical transmission unit Wavelength range, current sending wavelength, current receiving wavelength, sending optical power, receiving optical power, voltage, current, temperature, rate level, presence information;
  • Polling obtains the information of each optical transmission unit in the full wavelength range, and stores the obtained information in the optical transmission unit information storage table.
  • Fig. 4 is a flowchart of maintaining the information storage table of the optical transmission unit of the present invention.
  • the embodiment of the present invention defines OM and CFM as optical transmission units.
  • the main control unit will create a storage table of optical transmission unit information.
  • the storage table of optical transmission unit information includes: optical transmission unit ID, optical transmission unit SN, optical transmission unit sending wavelength range, optical transmission unit Receiving wavelength range, current transmission wavelength of the optical transmission unit, current reception wavelength of the optical transmission unit, transmission optical power, received optical power, voltage, current, temperature, optical transmission unit rate level, presence information, etc.
  • WDM-PON OLT After WDM-PON OLT completes the establishment of the optical transmission unit information storage table, it will poll to obtain the information of each optical transmission unit in the full wavelength range, and store the obtained information in the optical transmission unit information storage table .
  • the content in the optical transmission unit information storage table is not updated; if the optical transmission unit information obtained this time is the same. The transmission unit information is different from the information obtained in the last poll, and the content in the optical transmission unit information storage table will be updated in real time.
  • FIG. 5 is a flow chart of the task list processing of the present invention, which specifically includes the following steps:
  • the OLT receives the task list
  • OLT optical transmission unit
  • the task list is sequentially stored in the queue
  • the OLT main control unit When the OLT main control unit receives the management tasks from the user, it will store these tasks in the queue in turn.
  • the working mode of the queue is first-in-first-out, that is, the incoming tasks are received first, and the processing is given priority until all tasks in the queue Processing is complete.
  • the OLT main control unit will continuously and uninterruptedly obtain task orders from the queue for processing.
  • S104 Determine whether the task list is obtained; if the task order is obtained, execute S105 to process the task order; if the task order is not obtained or the task order processing is completed, continue to execute S103 to obtain the task order sequentially from the queue;
  • the OLT main control unit When the OLT main control unit obtains the task order, it processes the task order; when the OLT main control unit does not obtain the task order or all the task orders in the queue have been processed, it continues to obtain the task order from the queue.
  • SET setting
  • GET reading
  • a timer T is started.
  • the timeout interval of the timer is set to t seconds.
  • the value of t is variable and can be flexibly set as required.
  • the timer T starts to count. If the response message is received within t seconds, the task list is processed successfully, and then the next task list is processed; if no response message is received within t seconds, Then the task list processing fails. If the task list processing fails, the task list will be processed repeatedly, and the timer T will be restarted.
  • next task list will be processed; if the task list has been processed repeatedly and the number of repeated processing has reached n times, the next task list will be processed. Process, and record and save the failed task list for users to inquire.
  • processing the acquired task list may include the following steps:
  • the main control unit when the main control unit sets the configuration of an optical transmission unit (OM or CFM) in the WDM-PON system, it queries the optical transmission unit information storage table to obtain the ID number and current Receiving wavelength ⁇ ';
  • the main control unit of the OLT sends the management setting information to the signal transmitter.
  • the management setting information is carried in the low-speed electrical signal, and the signal transmitter sends the low-speed electrical signal to the top adjustment unit of the optical amplifier;
  • the top adjustment unit of the optical amplifier loads the management information carried by the low-speed electrical signal onto the optical signal with a wavelength of ⁇ 'for transmission;
  • the signal amplifier of the optical amplifier amplifies the optical signal power and sends it out;
  • the optical signal is transmitted to the optical transmission unit in the optical fiber through WM or AAWG, and the optical transmission unit receives the optical signal and processes the management setting message.
  • the current reception wavelength ⁇ 'of the optical transmission unit is the uplink wavelength corresponding to the third path;
  • the current reception wavelength ⁇ 'of the optical transmission unit is the downlink wavelength corresponding to the first path.
  • the current receiving wavelength ⁇ 'of the optical transmission unit does not specifically refer to a certain wavelength, but generally refers to the current receiving wavelength of a certain optical transmission unit (OM or CFM).
  • Figure 6 is a flow chart of the execution of the SET task list of the present invention, which specifically includes the following steps:
  • the SET task can be sent to the OLT through EMS.
  • the OLT main control unit receives the SET task from the user, it will first store the SET task in the queue , And then process this SET order.
  • An optical transmission unit (OM or CFM) needs to be set. First, query the optical transmission unit information storage table to obtain the ID number of the optical transmission unit, the current receiving wavelength ⁇ 'and other information, and then the main control unit will input the information through the management information input port. The management setting information is sent to the signal transmitter. At this time, the management setting information is carried in the low-speed electrical signal, and the signal transmitter sends the low-speed electrical signal to the top adjustment unit of the optical amplifier.
  • the top adjustment unit of the optical amplifier loads the management information carried by the low-speed electrical signal onto the optical signal with a wavelength of ⁇ 'for transmission, and at the same time, the signal amplifier of the optical amplifier amplifies and transmits the optical signal power.
  • the optical signal is transmitted to the optical transmission unit (OM or CFM) through the WM or AAWG in the optical fiber.
  • the optical transmission unit receives the optical signal and processes the management setting message. After the processing is completed, it will reply with a response message.
  • processing the acquired task list may further include the following steps:
  • the main control unit of the OLT queries the optical transmission unit information storage table to obtain the ID of the optical transmission unit Number, current sending wavelength ⁇ ;
  • the main control unit of the OLT sets a tunable filter to filter out the optical signal with wavelength ⁇ from the optical signal with multiple wavelengths, and the tunable filter transmits the optical signal with wavelength ⁇ to the signal receiver;
  • the signal receiver completes photoelectric conversion, converts the optical signal with wavelength ⁇ into electrical signal, and outputs low-speed electrical signal;
  • the main control unit receives the low-speed electrical signal, processes the messages in the low-speed electrical signal, and feeds back the inquired information to the user through the EMS.
  • the current transmission wavelength ⁇ of the optical transmission unit is the downlink wavelength corresponding to the second path
  • the current transmission wavelength ⁇ of the optical transmission unit is the uplink wavelength corresponding to the fourth path.
  • the following description combines the management information and the four paths of the data stream:
  • the first path corresponding to the downstream management information input port, the first signal transmitter, the first optical amplifier, and the first multiplexer/demultiplexer; downstream to CFM for SET CFM; corresponding to the downstream wavelength received by the CFM;
  • the second path the second multiplexer and demultiplexer, the first optical amplifier, the first tunable filter, the first signal receiver, the downstream management information output port; downstream from the OM, used to GET OM; corresponding to the OM sent Downstream wavelength;
  • the third path upstream management information input port, second signal transmitter, second optical amplifier, second multiplexer/demultiplexer; upstream to OM for SET OM; corresponding to the upstream wavelength received by the OM;
  • the fourth path the first multiplexer and demultiplexer, the second optical amplifier, the second tunable filter, the second signal receiver, the upstream management information output port; from the CFM upstream, it is used to GET CFM, corresponding to the CFM sent Upstream wavelength.
  • Figure 7 is a flow chart of the execution of the GET task list of the present invention, which specifically includes the following steps:
  • the GET task can be sent to the OLT through EMS.
  • the OLT main control unit receives the GET task from the user, the GET task will be sent first The task is stored in the queue, and then the GET task list is processed.
  • the optical transmission unit is notified of the information to be queried. After the optical transmission unit receives the query task, it will process it in a timely manner and return the processing result through the optical signal.
  • the main control unit queries the optical transmission unit information storage table to obtain information such as the ID number of the optical transmission unit that needs to be queried, and the current transmission wavelength ⁇ .
  • the main control unit sets a tunable filter to filter out optical signals with multiple wavelengths.
  • the tunable filter transmits the optical signal with the wavelength ⁇ to the signal receiver, and the signal receiver completes the photoelectric conversion, converts the optical signal with the wavelength ⁇ into an electrical signal, and sends the low-speed electrical signal to the management information output port.
  • the low-speed electrical signal is output from the management signal output port, and the main control unit receives the electrical signal and processes the messages in the signal.
  • the main control unit feeds back the inquired information to the user through the EMS.
  • the upstream optical signal and the downstream optical signal are transmitted separately from the downstream optical signal in the optical path management control unit, and the monitoring and management are performed separately, and the upstream optical signal and the downstream optical signal are combined or separated by the combiner/demultiplexer at both ends.
  • the embodiments of the present invention realize the reception and transmission of low-speed management data in high-speed optical signals while not affecting the transmission of high-speed data optical signals in the WDM-PON system, and can effectively manage and maintain OM and CFM, and significantly improve WDM PON in 5G.
  • the convenience and efficiency of operation and maintenance in the fronthaul business reduces operation and maintenance costs.
  • the embodiments of the present application also provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, all or some of the method steps of the above method are implemented.
  • the present invention implements all or part of the processes in the above method, and can also be completed by instructing relevant hardware by a computer program.
  • the computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, it can be implemented. The steps of each method embodiment described above.
  • the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file, or some intermediate forms.
  • Computer-readable media may include: any entity or device capable of carrying computer program code, recording media, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access Memory (RAM, Access Memory), electric carrier signal, telecommunications signal, software distribution medium, etc.
  • computer-readable media can be appropriately added or deleted according to the requirements of the legislation and patent practice in the jurisdiction.
  • computer-readable media does not include Electric carrier signal and telecommunications signal.
  • the embodiments of the present application also provide an electronic device, including a memory and a processor, and a computer program running on the processor is stored in the memory.
  • a computer program running on the processor is stored in the memory.
  • the processor executes the computer program, all method steps or steps in the above method are implemented. Some method steps.
  • the so-called processor can be a central processing unit (Central Processing Unit, CPU), other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), ready-made Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.
  • the processor is the control center of the computer device, and various parts of the computer device are connected by various interfaces and lines.
  • the memory may be used to store computer programs and/or modules, and the processor implements various functions of the computer device by running or executing the computer programs and/or modules stored in the memory and calling data stored in the memory.
  • the memory may mainly include a storage program area and a storage data area, where the storage program area can store an operating system and at least one application program required by at least one function (such as sound playback function, image playback function, etc.); the storage data area can store Use the created data (such as audio data, video data, etc.).
  • the memory may include high-speed random access memory, and may also include non-volatile memory, such as hard disks, memory, plug-in hard disks, smart media cards (SMC), and secure digital (SD) cards. , Flash Card, at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.
  • the embodiments of the present invention can be provided as methods, systems, servers, or computer program products. Therefore, the present invention may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.
  • a computer-usable storage media including but not limited to disk storage, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

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Abstract

Disclosed are a WDM-PON system and a management and control method therefor, relating to the technical field of WDM-PON access. The WDM-PON system is applied to a 5G fronthaul service. The system comprises an OLT, an ODN, a wavelength-tunable and controllable optical module (OM), a DU, a CFM and an AAU, wherein the OM is inserted into a clamping slot of the DU; the OM is connected to the OLT; the CFM has an adjustable wavelength, and is inserted into a clamping slot of the AAU; the CFM is connected to the ODN; the OLT comprises a main control unit and an optical path management and control unit; an uplink optical signal and a downlink optical signal in the optical path management and control unit are separately transmitted and managed to realize the receiving and sending of low-speed management data in a high-speed optical signal; the main control unit and the optical path management and control unit manage and control an optical transmission unit together; and the optical transmission unit is the OM or the CFM. The present invention can realize the receiving and sending of the low-speed management data in the high-speed optical signal without affecting original high-speed data optical signal transmission, and can manage and control the CFM and the OM.

Description

WDM-PON***及其管控方法WDM-PON system and its management and control method 技术领域Technical field
本发明涉及WDM-PON接入技术领域，具体是涉及一种WDM-PON***及其管控方法。The invention relates to the technical field of WDM-PON access, in particular to a WDM-PON system and its management and control method.
背景技术Background technique
目前5G网络研究已经形成第一波浪潮，进入技术标准研究及研发试验的关键阶段。相对于4G技术，5G网络在吞吐率、时延、连接数量等方面性能有显著提升，同时对前传网络也提出了新的挑战，如密集光纤部署、更高传输宽带、更低时延等大量新需求。WR-WDM-PON(Wavelength Routed-Wavelength Division Multiplexing-Passive Optical Network，波长路由的波分复用无源光网络)，结合了WR(Wavelength Routed，波长路由)技术、WDM(Wavelength Division Multiplexing，波分复用)技术和PON(Passive Optical Network，无源光网络)拓扑结构的特点，具有高带宽、低时延、节省光纤、运维简单、成本低等优点，在5G前传应用方面具备其独特的优势，是5G网络首选的接入技术。At present, 5G network research has formed the first wave, entering the critical stage of technical standard research and research and development test. Compared with 4G technology, 5G networks have significantly improved performance in terms of throughput, latency, and number of connections. At the same time, they also pose new challenges to fronthaul networks, such as dense fiber deployment, higher transmission bandwidth, and lower latency. new demand. WR-WDM-PON (Wavelength Routed-Wavelength Division Multiplexing-Passive Optical Network), combined with WR (Wavelength Routed, wavelength routing) technology, WDM (Wavelength Division Multiplexing, wavelength division multiplexing) Multiplexing) technology and PON (Passive Optical Network, passive optical network) topology features, with the advantages of high bandwidth, low latency, fiber saving, simple operation and maintenance, and low cost. It has its unique advantages in 5G fronthaul applications. Advantage is the preferred access technology for 5G networks.
WR-WDM-PON由OLT(Optical Line Terminal，光线路终端)、ODN(Optical Distribution Network，光分配网络)和CFM(Cellular Fronthaul Module，移动前传小型可插拔模块)型ONU组成，其中OLT主要由主控单元和WM(Wavelength Multiplexer，波长复用器件)组成。WM为一种用于在WR-WDM-PON波长通道对与通道组之间提供复用/解复用功能的双向功能单元。ODN包括光纤馈线段、WM 和分支光纤。WR-WDM-PON中CFM的工作波长是由CFM在ODN中的物理连接决定的，即连接到ODN中AAWG(Athermal Arrayed Waveguide Grating，无热波导阵列光栅)的哪个分支所决定。同理，在OLT一侧，每个OLT SNI侧OM(Optical Mode，光模块)的工作波长也是物理连接决定的，即连接到OLT侧的WM器件的哪个分支所决定的。WR-WDM-PON is composed of OLT (Optical Line Terminal), ODN (Optical Distribution Network, Optical Distribution Network) and CFM (Cellular Fronthaul Module, mobile fronthaul small pluggable module) ONUs, of which the OLT is mainly composed of The main control unit and WM (wavelength multiplexer, wavelength multiplexer) are composed. WM is a bidirectional functional unit used to provide multiplexing/demultiplexing functions between WR-WDM-PON wavelength channel pairs and channel groups. ODN includes fiber feeder section, WM and branch fiber. The working wavelength of CFM in WR-WDM-PON is determined by the physical connection of CFM in ODN, that is, which branch is connected to AAWG (Athermal Arrayed Waveguide Grating) in ODN. Similarly, on the OLT side, the working wavelength of each OLT SNI side OM (Optical Mode, optical module) is also determined by the physical connection, that is, which branch of the WM device connected to the OLT side is determined.
在实现本发明的过程中，发明人发现现有技术中至少存在如下问题：In the process of implementing the present invention, the inventor found that at least the following problems exist in the prior art:
目前，25G WR-WDM-PON***中，支持多个通道，每个通道上行最大带宽和下行最大带宽均为25.78Gbit/s，且每个通道独自占用一对波长。因此，主干光纤中上行方向和下行方向各有多个不同波长的光信号在传输，且上行总带宽与下行总带宽都达到了Tbit/s。在这种高速光信号中接收与发送低速管理数据尤为困难，严重影响OLT对OM和CFM的管理维护。At present, in the 25G WR-WDM-PON system, multiple channels are supported. The maximum upstream bandwidth and the maximum downstream bandwidth of each channel are both 25.78 Gbit/s, and each channel occupies a pair of wavelengths independently. Therefore, in the backbone fiber, there are multiple optical signals with different wavelengths in the upstream direction and the downstream direction, and the total upstream bandwidth and the total downstream bandwidth both reach Tbit/s. It is particularly difficult to receive and send low-speed management data in such high-speed optical signals, which seriously affects the management and maintenance of OM and CFM by the OLT.
发明内容Summary of the invention
本发明的目的是为了克服上述背景技术的不足，提供一种WDM-PON***及其管控方法，在WDM-PON***中不影响原有高速数据光信号传输的同时，实现在高速光信号中接收与发送低速管理数据，对CFM和OM进行管理维护。The purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a WDM-PON system and its management and control method, which does not affect the original high-speed data optical signal transmission in the WDM-PON system, and realizes the reception of high-speed optical signals. And send low-speed management data, manage and maintain CFM and OM.
第一方面，提供一种WDM-PON***，应用于5G前传业务中，该***包括光线路终端OLT、光分配网络ODN、波长可调谐可控光模块OM、分布单元DU、移动前传小型可插拔模块CFM和有源天线处理单元AAU，其中：In the first aspect, a WDM-PON system is provided, which is applied to 5G fronthaul services. The system includes optical line terminal OLT, optical distribution network ODN, wavelength tunable and controllable optical module OM, distribution unit DU, and mobile fronthaul small pluggable Unplug the module CFM and active antenna processing unit AAU, of which:
OM插在DU的卡槽上，OM与OLT相连；The OM is inserted into the card slot of the DU, and the OM is connected to the OLT;
CFM波长可调，插在AAU的卡槽上，CFM与ODN相连；The wavelength of CFM is adjustable, inserted in the card slot of AAU, CFM is connected with ODN;
OLT包括主控单元和光路管理控制单元，光路管理控制单元内部的上行光信号与下行光信号分开传输、分别管理，实现在高速光信号中接收与发送低速管理数据，主控单元和光路管理控制单元共同管控光传输单元，所述光传输单元为OM或CFM。The OLT includes a main control unit and an optical path management control unit. The upstream optical signal and the downstream optical signal inside the optical path management control unit are transmitted separately and managed separately to realize the reception and transmission of low-speed management data in the high-speed optical signal. The main control unit and optical path management control The units jointly control the optical transmission unit, and the optical transmission unit is OM or CFM.
根据第一方面，在第一方面的第一种可能的实现方式中，所述光路管理控制单元包括：下行管理信息输入端口、第一信号发送器、第一光放大器、第一可调滤波器、第一信号接收器、下行管理信息输出端口、第一合分波器、上行管理信息输入端口、第二信号发送器、第二光放大器、第二可调滤波器、第二信号接收器、上行管理信息输出端口、第二合分波器，管理信息及数据流的路径包括：According to the first aspect, in a first possible implementation manner of the first aspect, the optical path management control unit includes: a downlink management information input port, a first signal transmitter, a first optical amplifier, and a first tunable filter , The first signal receiver, the downstream management information output port, the first multiplexer and demultiplexer, the upstream management information input port, the second signal transmitter, the second optical amplifier, the second tunable filter, the second signal receiver, The upstream management information output port, the second combiner/demultiplexer, the path of management information and data flow include:
第一路径：下行管理信息输入端口、第一信号发送器、第一光放大器、第一合分波器；The first path: downstream management information input port, first signal transmitter, first optical amplifier, first combiner/demultiplexer;
第二路径：第二合分波器、第一光放大器、第一可调滤波器、第一信号接收器、下行管理信息输出端口；Second path: second multiplexer/demultiplexer, first optical amplifier, first tunable filter, first signal receiver, downstream management information output port;
第三路径：上行管理信息输入端口、第二信号发送器、第二光放大器、第二合分波器；Third path: upstream management information input port, second signal transmitter, second optical amplifier, second combiner/demultiplexer;
第四路径：第一合分波器、第二光放大器、第二可调滤波器、第二信号接收器、上行管理信息输出端口。The fourth path: the first multiplexer/demultiplexer, the second optical amplifier, the second tunable filter, the second signal receiver, and the upstream management information output port.
根据第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，所述第一光放大器、第二光放大器均包括输入口、调顶单元、信号放大器、信号监控器、输出口，其中：According to the first possible implementation manner of the first aspect, in the second possible implementation manner of the first aspect, the first optical amplifier and the second optical amplifier each include an input port, a top adjustment unit, a signal amplifier, Signal monitor, output port, among them:
第一光放大器的输入口接收来自第二合分波器的下行光信号；第二光放大器的输入口接收来自第一合分波器的上行光信号；The input port of the first optical amplifier receives the downstream optical signal from the second multiplexer/demultiplexer; the input port of the second optical amplifier receives the upstream optical signal from the first multiplexer/demultiplexer;
所述调顶单元利用偏置电流来调节信号放大器中光信号的功率电平，将低速电信号承载的管理信息加载到光信号上进行传输；The top adjustment unit uses the bias current to adjust the power level of the optical signal in the signal amplifier, and loads the management information carried by the low-speed electrical signal onto the optical signal for transmission;
所述信号监控器将来自信号放大器的光信号发送给输出口，并对光信号进行分光操作，分出的一份光信号发送给第一可调滤波器/第二可调滤波器；The signal monitor sends the optical signal from the signal amplifier to the output port, performs a splitting operation on the optical signal, and sends a portion of the split optical signal to the first tunable filter/the second tunable filter;
第一光放大器的输出口将下行光信号发送给第一合分波器；第二光放大器的输出口将上行光信号发送给第二合分波器。The output port of the first optical amplifier sends the downstream optical signal to the first combiner/demultiplexer; the output port of the second optical amplifier sends the upstream optical signal to the second combiner/demultiplexer.
根据第一方面的第一种可能的实现方式，在第一方面的第三种可能的实现方式中，所述主控单元通过下行管理信息输入端口、上行管理信息输入端口发送管理信息给光路管理控制单元处理，通过下行管理信息输出端口、上行管理信息输出端口接收光路管理控制单元镜像输出的数据信息进行分析处理。According to the first possible implementation manner of the first aspect, in the third possible implementation manner of the first aspect, the main control unit sends management information to the optical path management through the downstream management information input port and the upstream management information input port. The control unit processes, through the downstream management information output port and the upstream management information output port, receives the data information mirrored and output by the optical path management control unit for analysis and processing.
根据第一方面，在第一方面的第四种可能的实现方式中，所述OLT还包括波长复用器WM，OM通过光纤与OLT WM分支相连接；光路管理控制单元一端与WM连接，另一端与ODN连接。According to the first aspect, in a fourth possible implementation manner of the first aspect, the OLT further includes a wavelength multiplexer WM, and the OM is connected to the OLT WM branch through an optical fiber; one end of the optical path management control unit is connected to the WM, and the other One end is connected to ODN.
根据第一方面，在第一方面的第五种可能的实现方式中，所述ODN由无热波导阵列光栅AAWG构成，ODN通过光纤与OLT连接，CFM通过光纤与ODN AAWG分支相连接。According to the first aspect, in a fifth possible implementation manner of the first aspect, the ODN is composed of an athermal waveguide array grating AAWG, the ODN is connected to the OLT through an optical fiber, and the CFM is connected to the ODN AAWG branch through an optical fiber.
根据第一方面的第一种可能的实现方式，在第一方面的第六种可能的实现方式中，所述OLT通过网络与网元管理***EMS相连，用户通过EMS发送管理任务给OLT，对WDM-PON***进行管理控制。According to the first possible implementation manner of the first aspect, in the sixth possible implementation manner of the first aspect, the OLT is connected to the network element management system EMS through the network, and the user sends management tasks to the OLT through the EMS. WDM-PON system for management and control.
根据第一方面的第六种可能的实现方式，在第一方面的第七种可能的实现方式中，所述对WDM-PON***进行管理控制，包括以下步骤：According to the sixth possible implementation manner of the first aspect, in the seventh possible implementation manner of the first aspect, the management and control of the WDM-PON system includes the following steps:
对WDM-PON***中的光传输单元进行管理控制时，通过EMS发送任务单给OLT，OLT的主控单元将接收的任务单存储到队列中；OLT的主控单元从队列中获取任务单，处理获取的任务单。When managing and controlling the optical transmission unit in the WDM-PON system, the task list is sent to the OLT through the EMS, and the main control unit of the OLT stores the received task order in the queue; the main control unit of the OLT obtains the task order from the queue, Process the acquired task list.
根据第一方面的第七种可能的实现方式，在第一方面的第八种可能的实现方式中，所述OLT的主控单元通过管理信息及数据流的路径对光传输单元的管控分别为：According to the seventh possible implementation manner of the first aspect, in the eighth possible implementation manner of the first aspect, the control of the optical transmission unit by the main control unit of the OLT through the path of management information and data flow is respectively :
所述第一路径：用来设置CFM；The first path: used to set CFM;
所述第二路径：用来读取OM；The second path: used to read the OM;
所述第三路径：用来设置OM；The third path: used to set OM;
所述第四路径：用来读取CFM。The fourth path: used to read CFM.
第二方面，提供一种应用于第一方面的第六种可能的实现方式的WDM-PON***的管控方法，包括以下步骤：In a second aspect, a method for managing and controlling a WDM-PON system applied to the sixth possible implementation of the first aspect is provided, including the following steps:
对WDM-PON***中的光传输单元进行管理控制时，通过EMS发送任务单给OLT，OLT的主控单元将接收的任务单存储到队列中；When managing and controlling the optical transmission unit in the WDM-PON system, the task list is sent to the OLT through EMS, and the main control unit of the OLT stores the received task list in the queue;
OLT的主控单元从队列中获取任务单，处理获取的任务单。The main control unit of the OLT obtains the task order from the queue and processes the obtained task order.
根据第二方面，在第二方面的第一种可能的实现方式中，还包括以下步骤：According to the second aspect, in the first possible implementation manner of the second aspect, the following steps are further included:
对WDM-PON***中的OM、CFM进行管理控制之前，对OLT进行初始化：主控单元建立光传输单元信息存储表，该表中存储有：光传输单元的ID、SN、发送波长范围、接收波长范围、当前发送波长、当前接收波长、发送光功率、接收光功率、电压、电流、温度、速率等级、在位信息；Before managing and controlling the OM and CFM in the WDM-PON system, initialize the OLT: the main control unit establishes an optical transmission unit information storage table, which stores: the ID, SN, transmission wavelength range, and reception of the optical transmission unit Wavelength range, current sending wavelength, current receiving wavelength, sending optical power, receiving optical power, voltage, current, temperature, rate level, presence information;
轮询获取全波长范围内各光传输单元的信息，并将获取到的信息存储到光传输单元信息存储表中。Polling obtains the information of each optical transmission unit in the full wavelength range, and stores the obtained information in the optical transmission unit information storage table.
根据第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，处理获取的任务单，包括以下步骤：According to the first possible implementation manner of the second aspect, in the second possible implementation manner of the second aspect, processing the acquired task list includes the following steps:
若获取的任务单为设置任务，设置WDM-PON***中某个光传输单元的配置时，查询光传输单元信息存储表，获取该光传输单元的 ID号、当前接收波长λ＇；If the obtained task list is a setting task, when setting the configuration of an optical transmission unit in the WDM-PON system, query the optical transmission unit information storage table to obtain the ID number of the optical transmission unit and the current receiving wavelength λ';
OLT的主控单元将管理设置信息发给信号发送器，此时管理设置信息在低速电信号中承载，信号发送器将低速电信号发送给光放大器的调顶单元；The main control unit of the OLT sends the management setting information to the signal transmitter. At this time, the management setting information is carried in the low-speed electrical signal, and the signal transmitter sends the low-speed electrical signal to the top adjustment unit of the optical amplifier;
光放大器的调顶单元将低速电信号承载的管理信息加载到波长为λ＇的光信号上进行传输，光放大器的信号放大器将光信号功率进行放大并发送出去；The top adjustment unit of the optical amplifier loads the management information carried by the low-speed electrical signal onto the optical signal with a wavelength of λ'for transmission, and the signal amplifier of the optical amplifier amplifies the optical signal power and sends it out;
光信号经过WM或AAWG在光纤中传送到光传输单元，光传输单元接收光信号并对管理设置消息进行处理。The optical signal is transmitted to the optical transmission unit in the optical fiber through WM or AAWG, and the optical transmission unit receives the optical signal and processes the management setting message.
根据第二方面的第二种可能的实现方式，在第二方面的第三种可能的实现方式中，所述光传输单元为OM时，光传输单元的当前接收波长λ＇为第三路径对应的上行波长；According to the second possible implementation manner of the second aspect, in the third possible implementation manner of the second aspect, when the optical transmission unit is OM, the current reception wavelength λ'of the optical transmission unit corresponds to the third path The upstream wavelength;
所述光传输单元为CFM时，光传输单元的当前接收波长λ＇为第一路径对应的下行波长。When the optical transmission unit is CFM, the current reception wavelength λ'of the optical transmission unit is the downlink wavelength corresponding to the first path.
根据第二方面的第一种可能的实现方式，在第二方面的第四种可能的实现方式中，处理获取的任务单，包括以下步骤：According to the first possible implementation manner of the second aspect, in the fourth possible implementation manner of the second aspect, processing the acquired task list includes the following steps:
若获取的任务单为读取任务，查询WDM-PON***中某个光传输单元的信息时，OLT的主控单元查询光传输单元信息存储表，获取该光传输单元的ID号、当前发送波长λ；If the obtained task list is a reading task, when querying the information of an optical transmission unit in the WDM-PON system, the main control unit of the OLT queries the optical transmission unit information storage table to obtain the ID number and current sending wavelength of the optical transmission unit λ;
OLT的主控单元设置可调滤波器从含有多个波长的光信号中过滤出波长为λ的光信号，可调滤波器将波长为λ的光信号传送给信号接收器；The main control unit of the OLT sets a tunable filter to filter out the optical signal with wavelength λ from the optical signal with multiple wavelengths, and the tunable filter transmits the optical signal with wavelength λ to the signal receiver;
信号接收器完成光电转换，将波长为λ的光信号转换成电信号，并将低速电信号输出；The signal receiver completes photoelectric conversion, converts the optical signal with wavelength λ into electrical signal, and outputs low-speed electrical signal;
主控单元接收低速电信号，并对低速电信号中的消息进行处理， 通过EMS将查询到的信息反馈给用户。The main control unit receives the low-speed electrical signal, processes the messages in the low-speed electrical signal, and feeds back the inquired information to the user through the EMS.
根据第二方面的第四种可能的实现方式，在第二方面的第五种可能的实现方式中，所述光传输单元为OM时，光传输单元的当前发送波长λ为第二路径对应的下行波长；According to the fourth possible implementation manner of the second aspect, in the fifth possible implementation manner of the second aspect, when the optical transmission unit is OM, the current transmission wavelength λ of the optical transmission unit is corresponding to the second path Downstream wavelength;
所述光传输单元为CFM时，光传输单元的当前发送波长λ为第四路径对应的上行波长。When the optical transmission unit is a CFM, the current transmission wavelength λ of the optical transmission unit is the uplink wavelength corresponding to the fourth path.
与现有技术相比，本发明的优点如下：Compared with the prior art, the advantages of the present invention are as follows:
在WDM-PON***中，OLT包含光路管理控制单元，光路管理控制单元一端与WM连接，另一端与ODN连接。光路管理控制单元内部上行光信号与下行光信号是分开进行传输的，且分开进行监控管理，两端通过合分波器将上行光信号和下行光信号进行合并或分开。本发明在不影响WDM-PON***高速数据光信号传输的同时，实现了在高速光信号中接收与发送低速管理数据，能有效对OM与CFM进行管理维护，显著提高了WDM PON在5G前传业务中运维的便捷性与高效性，降低了运维成本。In the WDM-PON system, the OLT contains an optical path management control unit, one end of which is connected to the WM and the other end to the ODN. The uplink optical signal and the downlink optical signal inside the optical path management control unit are transmitted separately, and are monitored and managed separately, and the uplink optical signal and the downlink optical signal are combined or separated by the combiner/demultiplexer at both ends. The invention realizes the reception and transmission of low-speed management data in high-speed optical signals without affecting the transmission of high-speed data optical signals of the WDM-PON system, can effectively manage and maintain OM and CFM, and significantly improves WDM PON's 5G fronthaul service The convenience and efficiency of China's operation and maintenance have reduced operation and maintenance costs.
附图说明Description of the drawings
图1为本发明实施例中WDM-PON的应用组网示意图；Figure 1 is a schematic diagram of WDM-PON application networking in an embodiment of the present invention;
图2为本发明实施例中WDM-PON的应用架构图；2 is a diagram of the application architecture of WDM-PON in an embodiment of the present invention;
图3为本发明实施例中WDM-PON***中的光路管理控制单元的架构图；Figure 3 is a structural diagram of a light path management control unit in a WDM-PON system in an embodiment of the present invention;
图4为本发明实施例中光传输单元信息存储表维护流程图；4 is a flowchart of maintenance of an optical transmission unit information storage table in an embodiment of the present invention;
图5为本发明实施例中任务单的处理流程图；FIG. 5 is a processing flowchart of a task list in an embodiment of the present invention;
图6为本发明实施例中SET任务单的处理流程图；Fig. 6 is a processing flowchart of a SET task list in an embodiment of the present invention;
图7为本发明实施例中GET任务单的处理流程图。Fig. 7 is a processing flowchart of a GET task list in an embodiment of the present invention.
具体实施方式Detailed ways
现在将详细参照本发明的具体实施例，在附图中例示了本发明的例子。尽管将结合具体实施例描述本发明，但将理解，不是想要将本发明限于所述的实施例。相反，想要覆盖由所附权利要求限定的在本发明的精神和范围内包括的变更、修改和等价物。应注意，这里描述的方法步骤都可以由任何功能块或功能布置来实现，且任何功能块或功能布置可被实现为物理实体或逻辑实体、或者两者的组合。Reference will now be made in detail to specific embodiments of the present invention, which are illustrated in the accompanying drawings. Although the invention will be described in conjunction with specific embodiments, it will be understood that it is not intended to limit the invention to the described embodiments. On the contrary, it is intended to cover changes, modifications and equivalents included within the spirit and scope of the present invention as defined by the appended claims. It should be noted that the method steps described here can be implemented by any functional block or functional arrangement, and any functional block or functional arrangement can be implemented as a physical entity or a logical entity, or a combination of both.
为了使本领域技术人员更好地理解本发明，下面结合附图和具体实施方式对本发明作进一步详细说明。In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
注意：接下来要介绍的示例仅是一个具体的例子，而不作为限制本发明的实施例必须为如下具体的步骤、数值、条件、数据、顺序等等。本领域技术人员可以通过阅读本说明书来运用本发明的构思来构造本说明书中未提到的更多实施例。Note: The example to be introduced next is only a specific example, and is not intended to limit the embodiment of the present invention. The specific steps, values, conditions, data, sequence, etc. must be as follows. Those skilled in the art can use the concept of the present invention to construct more embodiments not mentioned in this specification by reading this specification.
图1为本发明实施例WDM-PON的应用组网图。参见图1所示，本发明实施例提供一种WDM-PON***，可以应用于5G前传业务中。该WDM-PON***包括光线路终端OLT、光分配网络ODN、分布单元DU(Distributed Unit)和有源天线处理单元AAU(Active Antenna Unit，有源天线处理单元)，WDM-PON OLT的SNI(Service Node Interface，业务节点接口)侧端口通过光纤与DU相连，WDM-PON OLT的PON侧端口通过光纤与ODN主纤连接。Fig. 1 is an application networking diagram of WDM-PON according to an embodiment of the present invention. Referring to FIG. 1, an embodiment of the present invention provides a WDM-PON system, which can be applied to 5G fronthaul services. The WDM-PON system includes optical line terminal OLT, optical distribution network ODN, distributed unit DU (Distributed Unit), active antenna processing unit AAU (Active Antenna Unit, active antenna processing unit), WDM-PON OLT SNI (Service The Node Interface (Service Node Interface) side port is connected to the DU through an optical fiber, and the PON side port of the WDM-PON OLT is connected to the ODN main fiber through an optical fiber.
作为优选的实施方式，OLT通过网络与EMS(Element Management System：网元管理***)相连，用户可以通过EMS发送管理任务给OLT，对整个WDM-PON***进行管理控制。As a preferred implementation manner, the OLT is connected to an EMS (Element Management System: Element Management System) through a network, and the user can send management tasks to the OLT through the EMS to manage and control the entire WDM-PON system.
图2为本发明实施例WDM-PON的应用架构图。参见图2所示，WDM-PON***还包括波长可调谐可控光模块OM和移动前传小型 可插拔模块CFM，OLT包括主控单元、光路管理控制单元和波长复用器WM，光路管理控制单元一端与WM连接，另一端与ODN连接。光路管理控制单元内部的上行光信号与下行光信号分开传输、分别管理，实现在高速光信号中接收与发送低速管理数据，主控单元和光路管理控制单元共同管控光传输单元，所述光传输单元为OM或CFM。Fig. 2 is an application architecture diagram of WDM-PON according to an embodiment of the present invention. As shown in Figure 2, the WDM-PON system also includes a wavelength tunable and controllable optical module OM and a mobile fronthaul small pluggable module CFM. The OLT includes a main control unit, an optical path management control unit and a wavelength multiplexer WM, and optical path management control One end of the unit is connected to WM, and the other end is connected to ODN. The uplink optical signal and the downlink optical signal inside the optical path management control unit are separately transmitted and managed separately to realize the reception and transmission of low-speed management data in the high-speed optical signal. The main control unit and the optical path management control unit jointly control the optical transmission unit. The optical transmission The unit is OM or CFM.
ODN由无热波导阵列光栅AAWG构成，ODN分支通过光纤与CFM连接。The ODN is composed of athermal waveguide array grating AAWG, and the ODN branch is connected to the CFM through an optical fiber.
OM为波长可调谐可控光模块，插在分布单元DU的卡槽上，OM通过光纤与OLT WM分支相连接。The OM is a wavelength tunable and controllable optical module, which is inserted into the card slot of the distribution unit DU, and the OM is connected to the OLT WM branch through an optical fiber.
CFM为移动前传小型可插拔模块，波长可调，插在有源天线处理单元AAU的卡槽上，CFM通过光纤与ODN AAWG分支相连接。CFM is a small pluggable mobile fronthaul module with adjustable wavelength. It is inserted into the card slot of the active antenna processing unit AAU. The CFM is connected to the ODN AAWG branch through an optical fiber.
图3为本发明实施例WDM-PON***中的光路管理控制单元架构图。Fig. 3 is a structural diagram of an optical path management control unit in a WDM-PON system according to an embodiment of the present invention.
作为优选的实施方式，参见图3所示，光路管理控制单元包括：下行管理信息输入端口、第一信号发送器、第一光放大器、第一可调滤波器、第一信号接收器、下行管理信息输出端口、第一合分波器、上行管理信息输入端口、第二信号发送器、第二光放大器、第二可调滤波器、第二信号接收器、上行管理信息输出端口、第二合分波器，以及电源供给、软件接口等。As a preferred embodiment, referring to FIG. 3, the optical path management control unit includes: a downstream management information input port, a first signal transmitter, a first optical amplifier, a first tunable filter, a first signal receiver, and a downstream management Information output port, first combiner/demultiplexer, upstream management information input port, second signal transmitter, second optical amplifier, second tunable filter, second signal receiver, upstream management information output port, second combiner Demultiplexer, power supply, software interface, etc.
参见图3所示，管理信息及数据流的路径包括：As shown in Figure 3, the path of management information and data flow includes:
第一路径：下行管理信息输入端口、第一信号发送器、第一光放大器、第一合分波器；The first path: downstream management information input port, first signal transmitter, first optical amplifier, first combiner/demultiplexer;
第二路径：第二合分波器、第一光放大器、第一可调滤波器、第一信号接收器、下行管理信息输出端口；Second path: second multiplexer/demultiplexer, first optical amplifier, first tunable filter, first signal receiver, downstream management information output port;
第三路径：上行管理信息输入端口、第二信号发送器、第二光放 大器、第二合分波器；Third path: upstream management information input port, second signal transmitter, second optical amplifier, second combiner/demultiplexer;
第四路径：第一合分波器、第二光放大器、第二可调滤波器、第二信号接收器、上行管理信息输出端口。The fourth path: the first multiplexer/demultiplexer, the second optical amplifier, the second tunable filter, the second signal receiver, and the upstream management information output port.
作为优选的实施方式，主控单元通过下行管理信息输入端口、上行管理信息输入端口发送管理信息给光路管理控制单元处理，通过下行管理信息输出端口、上行管理信息输出端口接收光路管理控制单元镜像输出的数据信息进行分析处理。As a preferred embodiment, the main control unit sends management information to the optical path management control unit for processing through the downstream management information input port and the upstream management information input port, and receives the mirror output of the optical path management control unit through the downstream management information output port and the upstream management information output port. Analysis and processing of data information.
第一信号发送器可将从下行管理信息输入端口输入的承载管理信息的低速电信号发送给第一光放大器的调顶单元。第二信号发送器可将从上行管理信息输入端口输入的承载管理信息的低速电信号发送给第二光放大器的调顶单元。The first signal transmitter may send the low-speed electrical signal carrying the management information input from the downstream management information input port to the top adjustment unit of the first optical amplifier. The second signal transmitter may send the low-speed electrical signal carrying the management information input from the upstream management information input port to the top adjustment unit of the second optical amplifier.
第一信号接收器可将承载管理信息的光信号转换成电信号，并将承载管理信息的低速电信号发送给下行管理信息输出端口。第二信号接收器可将承载管理信息的光信号转换成电信号，并将承载管理信息的低速电信号发送给上行管理信息输出端口。第一信号接收器、第二信号接收器通过PD(Photo Diode，光电二极管)完成光信号转换成电信号。PD是光转换电的器件，探测光信号。The first signal receiver can convert the optical signal carrying the management information into an electric signal, and send the low-speed electric signal carrying the management information to the downstream management information output port. The second signal receiver can convert the optical signal carrying the management information into an electric signal, and send the low-speed electric signal carrying the management information to the upstream management information output port. The first signal receiver and the second signal receiver complete the conversion of optical signals into electrical signals through PD (Photo Diode, photodiode). PD is a device that converts light to electricity and detects light signals.
第一可调滤波器、第二可调滤波器具有过滤出指定波长光信号、电控可编程、带宽和波长独立可调等功能，具有高达400dB/nm极为陡峭的边沿特性，适用于波长调谐，ASE(Amplifier Spontaneousemission，放大器自发辐射)噪声抑制，脉冲整形，相干光源等。The first tunable filter and the second tunable filter have the functions of filtering out the optical signal of the specified wavelength, electronically programmable, bandwidth and wavelength independently adjustable, etc., with extremely steep edge characteristics up to 400dB/nm, suitable for wavelength tuning , ASE (Amplifier Spontaneousemission, amplifier spontaneous emission) noise suppression, pulse shaping, coherent light source, etc.
第一合分波器、第二合分波器用于：将上行光信号与下行光信号合并或分开，具备将一系列载有信息、但波长不同的光信号合成一束，沿着单根光纤传输，同时也具备将一束光信号中各个不同波长的光信 号分开的功能。The first combiner/demultiplexer and the second combiner/demultiplexer are used to combine or separate the upstream optical signal and the downstream optical signal, and are capable of combining a series of optical signals carrying information but with different wavelengths into one beam along a single optical fiber Transmission also has the function of separating optical signals of different wavelengths in a beam of optical signals.
第一光放大器、第二光放大器均包括输入口、调顶单元、信号放大器、信号监控器、输出口，其中：Both the first optical amplifier and the second optical amplifier include an input port, a top adjustment unit, a signal amplifier, a signal monitor, and an output port, among which:
第一光放大器的输入口接收来自第二合分波器的下行光信号；第二光放大器的输入口接收来自第一合分波器的上行光信号。The input port of the first optical amplifier receives the downstream optical signal from the second combiner/demultiplexer; the input port of the second optical amplifier receives the upstream optical signal from the first combiner/demultiplexer.
第一光放大器的调顶单元可利用偏置电流来调节第一光放大器的信号放大器中光信号的功率电平，从而可将低速电信号承载的管理信息加载到光信号上进行传输。The top adjustment unit of the first optical amplifier can use the bias current to adjust the power level of the optical signal in the signal amplifier of the first optical amplifier, so that the management information carried by the low-speed electrical signal can be loaded onto the optical signal for transmission.
第二光放大器的调顶单元可利用偏置电流来调节第二光放大器的信号放大器中光信号的功率电平，从而可将低速电信号承载的管理信息加载到光信号上进行传输。The top adjustment unit of the second optical amplifier can use the bias current to adjust the power level of the optical signal in the signal amplifier of the second optical amplifier, so that the management information carried by the low-speed electrical signal can be loaded onto the optical signal for transmission.
第一光放大器的信号放大器、第二光放大器的信号放大器主要有EDFA(Erbium-Doped Optical Fiber Amplifier，掺铒光纤放大器)、SOA(Semiconductor Optical Amplifier，半导体光放大器)和FRA(Fiber Raman Amplifier，光纤拉曼放大器)三种，根据其在光纤网络中的应用，第一光放大器的信号放大器、第二光放大器的信号放大器主要有三种不同的用途：在发射机侧用作功率放大器以提高发射机的功率；在接收机之前作光预放大器以极大地提高光接收机的灵敏度；在光纤传输线路中作中继放大器以补偿光纤传输损耗，延长传输距离。The signal amplifier of the first optical amplifier and the signal amplifier of the second optical amplifier mainly include EDFA (Erbium-Doped Optical Fiber Amplifier), SOA (Semiconductor Optical Amplifier, Semiconductor Optical Amplifier), and FRA (Fiber Raman Amplifier) There are three kinds of Raman amplifiers. According to their applications in optical fiber networks, the signal amplifier of the first optical amplifier and the signal amplifier of the second optical amplifier mainly have three different uses: as a power amplifier on the transmitter side to improve the transmitter Used as an optical pre-amplifier before the receiver to greatly improve the sensitivity of the optical receiver; as a relay amplifier in the optical fiber transmission line to compensate for optical fiber transmission loss and extend the transmission distance.
第一光放大器的信号放大器、第二光放大器的信号放大器不但可对光信号进行直接放大，同时还具有实时、高增益、宽带、在线、低噪声、低损耗的全光放大功能。The signal amplifier of the first optical amplifier and the signal amplifier of the second optical amplifier can not only directly amplify optical signals, but also have real-time, high-gain, broadband, online, low-noise, and low-loss all-optical amplification functions.
第一光放大器的信号监控器将来自第一光放大器的信号放大器的光信号发送给第一光放大器的输出口，同时对光信号进行分光操作，分光比可调节，分出的一份光信号发送给第一可调滤波器。The signal monitor of the first optical amplifier sends the optical signal from the signal amplifier of the first optical amplifier to the output port of the first optical amplifier, and at the same time performs optical splitting operation on the optical signal, the splitting ratio can be adjusted, and the split optical signal Send to the first tunable filter.
第二光放大器的信号监控器将来自第二光放大器的信号放大器的光信号发送给第二光放大器的输出口，同时对光信号进行分光操作，分光比可调节，分出的一份光信号发送给第二可调滤波器。The signal monitor of the second optical amplifier sends the optical signal from the signal amplifier of the second optical amplifier to the output port of the second optical amplifier, and at the same time performs optical splitting operation on the optical signal, the splitting ratio can be adjusted, and the split optical signal Send to the second tunable filter.
第一光放大器的输出口将下行光信号发送给第一合分波器；第二光放大器的输出口将上行光信号发送给第二合分波器。The output port of the first optical amplifier sends the downstream optical signal to the first combiner/demultiplexer; the output port of the second optical amplifier sends the upstream optical signal to the second combiner/demultiplexer.
电源供给连接外部电源，对输入光路管理控制单元的电源供给进行调整，以符合光路管理控制单元的上电规范，为光路管理控制单元提供电源。The power supply is connected to an external power supply, and the power supply of the input optical path management control unit is adjusted to meet the power-on specification of the optical path management control unit and provide power for the optical path management control unit.
软件接口提供标准的两线I2C(Inter Integrated Circuit，集成电路总线)接口，四线SPI(Serial Peripheral Interface，串行外设接口)接口和MDIO(Management Data Input/Output，管理数据输入输出)接口进行光路管理控制单元控制，读写光路管理控制单元内部寄存器。The software interface provides a standard two-wire I2C (Inter Integrated Circuit, integrated circuit bus) interface, a four-wire SPI (Serial Peripheral Interface) interface and an MDIO (Management Data Input/Output, management data input and output) interface. The light path management control unit controls, reads and writes the internal registers of the light path management control unit.
光路管理控制单元内部上行光信号与下行光信号是分开进行传输的，且分开进行监控管理，两端通过合分波器将上行光信号和下行光信号进行合并或分开。The uplink optical signal and the downlink optical signal inside the optical path management control unit are transmitted separately, and are monitored and managed separately, and the uplink optical signal and the downlink optical signal are combined or separated by the combiner/demultiplexer at both ends.
作为优选的实施方式，所述对WDM-PON***进行管理控制，包括以下步骤：As a preferred embodiment, the management and control of the WDM-PON system includes the following steps:
对WDM-PON***中的光传输单元进行管理控制时，通过EMS发送任务单给OLT，OLT的主控单元将接收的任务单存储到队列中；OLT的主控单元从队列中获取任务单，处理获取的任务单。When managing and controlling the optical transmission unit in the WDM-PON system, the task list is sent to the OLT through the EMS, and the main control unit of the OLT stores the received task order in the queue; the main control unit of the OLT obtains the task order from the queue, Process the acquired task list.
作为优选的实施方式，所述OLT的主控单元通过管理信息及数据流的路径对光传输单元的管控分别为：As a preferred embodiment, the main control unit of the OLT manages and controls the optical transmission unit through the path of management information and data flow as follows:
所述第一路径：用来设置CFM；The first path: used to set CFM;
所述第二路径：用来读取OM；The second path: used to read the OM;
所述第三路径：用来设置OM；The third path: used to set OM;
所述第四路径：用来读取CFM。The fourth path: used to read CFM.
本发明实施例还提供一种应用于上述WDM-PON***的管控方法，包括以下步骤：The embodiment of the present invention also provides a management and control method applied to the above WDM-PON system, including the following steps:
对WDM-PON***中的光传输单元进行管理控制时，通过EMS发送任务单给OLT，OLT的主控单元将接收的任务单存储到队列中；OLT的主控单元从队列中获取任务单，处理获取的任务单。When managing and controlling the optical transmission unit in the WDM-PON system, the task list is sent to the OLT through the EMS, and the main control unit of the OLT stores the received task order in the queue; the main control unit of the OLT obtains the task order from the queue, Process the acquired task list.
作为优选的实施方式，上述方法还包括以下步骤：As a preferred embodiment, the above method further includes the following steps:
对WDM-PON***中的OM、CFM进行管理控制之前，对OLT进行初始化：主控单元建立光传输单元信息存储表，该表中存储有：光传输单元的ID、SN、发送波长范围、接收波长范围、当前发送波长、当前接收波长、发送光功率、接收光功率、电压、电流、温度、速率等级、在位信息；Before managing and controlling the OM and CFM in the WDM-PON system, initialize the OLT: the main control unit establishes an optical transmission unit information storage table, which stores: the ID, SN, transmission wavelength range, and reception of the optical transmission unit Wavelength range, current sending wavelength, current receiving wavelength, sending optical power, receiving optical power, voltage, current, temperature, rate level, presence information;
轮询获取全波长范围内各光传输单元的信息，并将获取到的信息存储到光传输单元信息存储表中。Polling obtains the information of each optical transmission unit in the full wavelength range, and stores the obtained information in the optical transmission unit information storage table.
图4为本发明光传输单元信息存储表维护流程图。本发明实施例将OM和CFM定义为光传输单元。WDM-PON OLT初始化时，主控单元会建立一张光传输单元信息存储表，光传输单元信息存储表中包括：光传输单元ID、光传输单元SN、光传输单元发送波长范围、光传输单元接收波长范围、光传输单元当前发送波长、光传输单元当前接收波长、发送光功率、接收光功率、电压、电流、温度、光传输单元速率等级、在位信息等内容。Fig. 4 is a flowchart of maintaining the information storage table of the optical transmission unit of the present invention. The embodiment of the present invention defines OM and CFM as optical transmission units. When WDM-PON OLT is initialized, the main control unit will create a storage table of optical transmission unit information. The storage table of optical transmission unit information includes: optical transmission unit ID, optical transmission unit SN, optical transmission unit sending wavelength range, optical transmission unit Receiving wavelength range, current transmission wavelength of the optical transmission unit, current reception wavelength of the optical transmission unit, transmission optical power, received optical power, voltage, current, temperature, optical transmission unit rate level, presence information, etc.
参见图4所示，WDM-PON OLT完成光传输单元信息存储表建立后，会轮询获取全波长范围内各光传输单元的信息，并将获取到的信息存储到光传输单元信息存储表中。As shown in Figure 4, after WDM-PON OLT completes the establishment of the optical transmission unit information storage table, it will poll to obtain the information of each optical transmission unit in the full wavelength range, and store the obtained information in the optical transmission unit information storage table .
每次轮询过程中，如果本次获取到的光传输单元信息与上一次轮询获取到的信息是相同的，就不更新光传输单元信息存储表中的内容；如果本次获取到的光传输单元信息与上一次轮询获取到的信息是不相同的，就会实时更新光传输单元信息存储表中的内容。During each polling process, if the optical transmission unit information obtained this time is the same as the information obtained in the previous poll, the content in the optical transmission unit information storage table is not updated; if the optical transmission unit information obtained this time is the same The transmission unit information is different from the information obtained in the last poll, and the content in the optical transmission unit information storage table will be updated in real time.
图5为本发明任务单处理流程图，具体包括以下步骤：Figure 5 is a flow chart of the task list processing of the present invention, which specifically includes the following steps:
S101，OLT接收到任务单；S101, the OLT receives the task list;
当用户需要对WDM-PON***中的光传输单元(OM或CFM)进行管理控制时，可以通过EMS发送管理任务给OLT，OLT主控单元接收任务单；When users need to manage and control the optical transmission unit (OM or CFM) in the WDM-PON system, they can send management tasks to the OLT through EMS, and the OLT main control unit receives the task list;
S102，任务单依次存储到队列中；S102, the task list is sequentially stored in the queue;
当OLT主控单元接收到来自用户的管理任务后，会将这些任务依次存储到队列中，队列的工作方式为先进先出，即先接收进来的任务，优先进行处理，直至队列中的所有任务处理完毕。When the OLT main control unit receives the management tasks from the user, it will store these tasks in the queue in turn. The working mode of the queue is first-in-first-out, that is, the incoming tasks are received first, and the processing is given priority until all tasks in the queue Processing is complete.
S103，从队列中顺序获取任务单；S103: Obtain the task list sequentially from the queue;
OLT主控单元会持续不间断从队列中顺序获取任务单进行处理。The OLT main control unit will continuously and uninterruptedly obtain task orders from the queue for processing.
S104，判断是否获取到任务单；如果获取到任务单，执行S105，对任务单进行处理；如果没有获取到任务单或任务单处理完成，则继续执行S103，从队列中顺序获取任务单；S104: Determine whether the task list is obtained; if the task order is obtained, execute S105 to process the task order; if the task order is not obtained or the task order processing is completed, continue to execute S103 to obtain the task order sequentially from the queue;
当OLT主控单元获取到任务单，则对任务单进行处理；当OLT主控单元没有获取到任务单或队列中所有任务单已经都处理完毕，则继续从队列中获取任务单。When the OLT main control unit obtains the task order, it processes the task order; when the OLT main control unit does not obtain the task order or all the task orders in the queue have been processed, it continues to obtain the task order from the queue.
S105，处理任务单。S105, processing the task list.
队列中的任务单分为两种：分别是SET(设置)任务单与GET(读取)任务单。任务单处理有超时机制，每个任务单开始处理时会启动定时器T，定时器超时时间间隔设置为t秒，t的取值可变，可 以根据需要灵活设置。当任务单开始处理时，定时器T开始计时，如果在t秒内收到应答消息，则该任务单处理成功，然后进行下一个任务单的处理；如果在t秒内没有收到应答消息，则该任务单处理失败。如果任务单处理失败，则会重复处理该任务单，并重新启动定时器T，重复处理次数为n(n>＝1)次，n的取值可变，可以根据需要灵活设置，一般设置n＝3。There are two types of task orders in the queue: SET (setting) task orders and GET (reading) task orders. There is a timeout mechanism for task order processing. When each task order starts to be processed, a timer T is started. The timeout interval of the timer is set to t seconds. The value of t is variable and can be flexibly set as required. When the task list starts to be processed, the timer T starts to count. If the response message is received within t seconds, the task list is processed successfully, and then the next task list is processed; if no response message is received within t seconds, Then the task list processing fails. If the task list processing fails, the task list will be processed repeatedly, and the timer T will be restarted. The number of repeated processing is n (n>= 1) times. The value of n is variable and can be set flexibly according to needs. Generally, set n = 3.
如果重复处理任务单时，该任务单处理成功，则进行下一个任务单的处理；如果重复处理任务单时，该任务单一直处理失败并且重复处理次数达到n次，则进行下一个任务单的处理，并对该处理失败任务单进行记录保存，供用户查询。If the task list is processed successfully when the task list is processed repeatedly, the next task list will be processed; if the task list has been processed repeatedly and the number of repeated processing has reached n times, the next task list will be processed. Process, and record and save the failed task list for users to inquire.
作为优选的实施方式，处理获取的任务单，可以包括以下步骤：As a preferred implementation manner, processing the acquired task list may include the following steps:
若获取的任务单为SET任务，主控单元设置WDM-PON***中某个光传输单元(OM或CFM)的配置时，查询光传输单元信息存储表，获取该光传输单元的ID号、当前接收波长λ＇；If the acquired task list is a SET task, when the main control unit sets the configuration of an optical transmission unit (OM or CFM) in the WDM-PON system, it queries the optical transmission unit information storage table to obtain the ID number and current Receiving wavelength λ';
OLT的主控单元将管理设置信息发给信号发送器，此时管理设置信息在低速电信号中承载，信号发送器将低速电信号发送给光放大器的调顶单元；The main control unit of the OLT sends the management setting information to the signal transmitter. At this time, the management setting information is carried in the low-speed electrical signal, and the signal transmitter sends the low-speed electrical signal to the top adjustment unit of the optical amplifier;
光放大器的调顶单元将低速电信号承载的管理信息加载到波长为λ＇的光信号上进行传输；The top adjustment unit of the optical amplifier loads the management information carried by the low-speed electrical signal onto the optical signal with a wavelength of λ'for transmission;
光放大器的信号放大器将光信号功率进行放大并发送出去；The signal amplifier of the optical amplifier amplifies the optical signal power and sends it out;
光信号经过WM或AAWG在光纤中传送到光传输单元，光传输单元接收光信号并对管理设置消息进行处理。The optical signal is transmitted to the optical transmission unit in the optical fiber through WM or AAWG, and the optical transmission unit receives the optical signal and processes the management setting message.
作为优选的实施方式，所述光传输单元为OM时，光传输单元的当前接收波长λ＇为第三路径对应的上行波长；As a preferred embodiment, when the optical transmission unit is an OM, the current reception wavelength λ'of the optical transmission unit is the uplink wavelength corresponding to the third path;
所述光传输单元为CFM时，光传输单元的当前接收波长λ＇为 第一路径对应的下行波长。When the optical transmission unit is a CFM, the current reception wavelength λ'of the optical transmission unit is the downlink wavelength corresponding to the first path.
SET OM与SET CFM的不是同一波长；GET OM与GET CFM的也不是同一波长。光传输单元的当前接收波长λ＇不是特指某一个波长，而是泛指某个光传输单元(OM或CFM)的当前接收波长。SET OM and SET CFM are not the same wavelength; GET OM and GET CFM are not the same wavelength. The current receiving wavelength λ'of the optical transmission unit does not specifically refer to a certain wavelength, but generally refers to the current receiving wavelength of a certain optical transmission unit (OM or CFM).
图6为本发明SET任务单执行流程图，具体包括以下步骤：Figure 6 is a flow chart of the execution of the SET task list of the present invention, which specifically includes the following steps:
当用户需要设置WDM-PON***中光传输单元的相关配置时，可以通过EMS发送SET任务给OLT，当OLT主控单元接收到来自用户的SET任务后，会先将此SET任务存储到队列中，然后处理此SET任务单。When the user needs to set the relevant configuration of the optical transmission unit in the WDM-PON system, the SET task can be sent to the OLT through EMS. When the OLT main control unit receives the SET task from the user, it will first store the SET task in the queue , And then process this SET order.
具体处理流程为：The specific processing flow is:
某个光传输单元(OM或CFM)需要进行设置，先查询光传输单元信息存储表，获取该光传输单元的ID号、当前接收波长λ＇等信息，接着主控单元通过管理信息输入端口将管理设置信息发给信号发送器，此时管理设置信息在低速电信号中承载，信号发送器将低速电信号发送给光放大器的调顶单元。An optical transmission unit (OM or CFM) needs to be set. First, query the optical transmission unit information storage table to obtain the ID number of the optical transmission unit, the current receiving wavelength λ'and other information, and then the main control unit will input the information through the management information input port. The management setting information is sent to the signal transmitter. At this time, the management setting information is carried in the low-speed electrical signal, and the signal transmitter sends the low-speed electrical signal to the top adjustment unit of the optical amplifier.
然后，光放大器的调顶单元将低速电信号承载的管理信息加载到波长为λ＇的光信号上进行传输，同时，光放大器的信号放大器将光信号功率进行放大并发送出去。Then, the top adjustment unit of the optical amplifier loads the management information carried by the low-speed electrical signal onto the optical signal with a wavelength of λ'for transmission, and at the same time, the signal amplifier of the optical amplifier amplifies and transmits the optical signal power.
光信号经过WM或AAWG在光纤中传送到光传输单元(OM或CFM)，光传输单元接收光信号并对管理设置消息进行处理，处理完毕后，会回复应答消息。The optical signal is transmitted to the optical transmission unit (OM or CFM) through the WM or AAWG in the optical fiber. The optical transmission unit receives the optical signal and processes the management setting message. After the processing is completed, it will reply with a response message.
作为优选的实施方式，处理获取的任务单，还可以包括以下步骤：As a preferred implementation manner, processing the acquired task list may further include the following steps:
若获取的任务单为GET任务，查询WDM-PON***中某个光传输单元的(OM或CFM)的信息时，OLT的主控单元查询光传输单元信息存储表，获取该光传输单元的ID号、当前发送波长λ；If the obtained task list is a GET task, when querying the (OM or CFM) information of an optical transmission unit in the WDM-PON system, the main control unit of the OLT queries the optical transmission unit information storage table to obtain the ID of the optical transmission unit Number, current sending wavelength λ;
OLT的主控单元设置可调滤波器从含有多个波长的光信号中过滤出波长为λ的光信号，可调滤波器将波长为λ的光信号传送给信号接收器；The main control unit of the OLT sets a tunable filter to filter out the optical signal with wavelength λ from the optical signal with multiple wavelengths, and the tunable filter transmits the optical signal with wavelength λ to the signal receiver;
信号接收器完成光电转换，将波长为λ的光信号转换成电信号，并将低速电信号输出；The signal receiver completes photoelectric conversion, converts the optical signal with wavelength λ into electrical signal, and outputs low-speed electrical signal;
主控单元接收低速电信号，并对低速电信号中的消息进行处理，通过EMS将查询到的信息反馈给用户。The main control unit receives the low-speed electrical signal, processes the messages in the low-speed electrical signal, and feeds back the inquired information to the user through the EMS.
作为优选的实施方式，所述光传输单元为OM时，光传输单元的当前发送波长λ为第二路径对应的下行波长；As a preferred embodiment, when the optical transmission unit is an OM, the current transmission wavelength λ of the optical transmission unit is the downlink wavelength corresponding to the second path;
所述光传输单元为CFM时，光传输单元的当前发送波长λ为第四路径对应的上行波长。When the optical transmission unit is a CFM, the current transmission wavelength λ of the optical transmission unit is the uplink wavelength corresponding to the fourth path.
关于光传输单元的当前接收波长λ＇和当前发送波长λ，下面结合前文的管理信息及数据流的四条路径来说明：Regarding the current receiving wavelength λ'and the current sending wavelength λ of the optical transmission unit, the following description combines the management information and the four paths of the data stream:
第一路径：对应于下行管理信息输入端口、第一信号发送器、第一光放大器、第一合分波器；下行到CFM，用来SET CFM；对应于该CFM接收的下行波长；The first path: corresponding to the downstream management information input port, the first signal transmitter, the first optical amplifier, and the first multiplexer/demultiplexer; downstream to CFM for SET CFM; corresponding to the downstream wavelength received by the CFM;
第二路径：第二合分波器、第一光放大器、第一可调滤波器、第一信号接收器、下行管理信息输出端口；从OM下行，用来GET OM；对应于该OM发送的下行波长；The second path: the second multiplexer and demultiplexer, the first optical amplifier, the first tunable filter, the first signal receiver, the downstream management information output port; downstream from the OM, used to GET OM; corresponding to the OM sent Downstream wavelength;
第三路径：上行管理信息输入端口、第二信号发送器、第二光放大器、第二合分波器；上行到OM，用来SET OM；对应于该OM接收的上行波长；The third path: upstream management information input port, second signal transmitter, second optical amplifier, second multiplexer/demultiplexer; upstream to OM for SET OM; corresponding to the upstream wavelength received by the OM;
第四路径：第一合分波器、第二光放大器、第二可调滤波器、第二信号接收器、上行管理信息输出端口；从CFM上行，用来GET CFM，对应于该CFM发送的上行波长。The fourth path: the first multiplexer and demultiplexer, the second optical amplifier, the second tunable filter, the second signal receiver, the upstream management information output port; from the CFM upstream, it is used to GET CFM, corresponding to the CFM sent Upstream wavelength.
图7为本发明GET任务单执行流程图，具体包括以下步骤：Figure 7 is a flow chart of the execution of the GET task list of the present invention, which specifically includes the following steps:
当用户需要查询WDM-PON***中光传输单元(OM或CFM)的相关信息时，可以通过EMS发送GET任务给OLT，当OLT主控单元接收到来自用户的GET任务后，会先将此GET任务存储到队列中，然后处理此GET任务单。When the user needs to query the relevant information of the optical transmission unit (OM or CFM) in the WDM-PON system, the GET task can be sent to the OLT through EMS. When the OLT main control unit receives the GET task from the user, the GET task will be sent first The task is stored in the queue, and then the GET task list is processed.
具体流程为：The specific process is:
首先，按照SET任务处理流程通知光传输单元将要查询那些信息，光传输单元接收到查询任务后会及时进行处理，并将处理结果通过光信号进行回传。First, according to the SET task processing flow, the optical transmission unit is notified of the information to be queried. After the optical transmission unit receives the query task, it will process it in a timely manner and return the processing result through the optical signal.
接着，主控单元查询光传输单元信息存储表，获取需要查询信息光传输单元的ID号、当前发送波长λ等信息，主控单元设置可调滤波器从含有多个波长的光信号中过滤出波长为λ的光信号。Next, the main control unit queries the optical transmission unit information storage table to obtain information such as the ID number of the optical transmission unit that needs to be queried, and the current transmission wavelength λ. The main control unit sets a tunable filter to filter out optical signals with multiple wavelengths. Optical signal with wavelength λ.
然后，可调滤波器将波长为λ的光信号传送给信号接收器，信号接收器完成光电转换，将波长为λ的光信号转换成电信号，并将低速电信号发送给管理信息输出端口。低速电信号从管理信号输出端口输出，主控单元接收此电信号并对信号中的消息进行处理。Then, the tunable filter transmits the optical signal with the wavelength λ to the signal receiver, and the signal receiver completes the photoelectric conversion, converts the optical signal with the wavelength λ into an electrical signal, and sends the low-speed electrical signal to the management information output port. The low-speed electrical signal is output from the management signal output port, and the main control unit receives the electrical signal and processes the messages in the signal.
最后，主控单元通过EMS将查询到的信息反馈给用户。Finally, the main control unit feeds back the inquired information to the user through the EMS.
本发明实施例中的光路管理控制单元内部上行光信号与下行光信号是分开进行传输的，且分开进行监控管理，两端通过合分波器将上行光信号和下行光信号进行合并或分开。In the embodiment of the present invention, the upstream optical signal and the downstream optical signal are transmitted separately from the downstream optical signal in the optical path management control unit, and the monitoring and management are performed separately, and the upstream optical signal and the downstream optical signal are combined or separated by the combiner/demultiplexer at both ends.
本发明实施例在不影响WDM-PON***高速数据光信号传输的同时，实现了在高速光信号中接收与发送低速管理数据，能有效对OM与CFM进行管理维护，显著提高了WDM PON在5G前传业务中运维的便捷性与高效性，降低了运维成本。The embodiments of the present invention realize the reception and transmission of low-speed management data in high-speed optical signals while not affecting the transmission of high-speed data optical signals in the WDM-PON system, and can effectively manage and maintain OM and CFM, and significantly improve WDM PON in 5G. The convenience and efficiency of operation and maintenance in the fronthaul business reduces operation and maintenance costs.
基于同一发明构思，本申请实施例还提供了一种计算机可读存储 介质，其上存储有计算机程序，计算机程序被处理器执行时实现上述方法的所有方法步骤或部分方法步骤。Based on the same inventive concept, the embodiments of the present application also provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, all or some of the method steps of the above method are implemented.
本发明实现上述方法中的全部或部分流程，也可以通过计算机程序来指令相关的硬件来完成，计算机程序可存储于一计算机可读存储介质中，该计算机程序在被处理器执行时，可实现上述各个方法实施例的步骤。其中，计算机程序包括计算机程序代码，计算机程序代码可以为源代码形式、对象代码形式、可执行文件或某些中间形式等。计算机可读介质可以包括：能够携带计算机程序代码的任何实体或装置、记录介质、U盘、移动硬盘、磁碟、光盘、计算机存储器、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Ra ndom Access Memory)、电载波信号、电信信号以及软件分发介质等。需要说明的是，计算机可读介质包含的内容可以根据司法管辖区内立法和专利实践的要求进行适当的增减，例如在某些司法管辖区，根据立法和专利实践，计算机可读介质不包括电载波信号和电信信号。The present invention implements all or part of the processes in the above method, and can also be completed by instructing relevant hardware by a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, it can be implemented. The steps of each method embodiment described above. Among them, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file, or some intermediate forms. Computer-readable media may include: any entity or device capable of carrying computer program code, recording media, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access Memory (RAM, Access Memory), electric carrier signal, telecommunications signal, software distribution medium, etc. It should be noted that the content contained in computer-readable media can be appropriately added or deleted according to the requirements of the legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to the legislation and patent practice, computer-readable media does not include Electric carrier signal and telecommunications signal.
基于同一发明构思，本申请实施例还提供一种电子设备，包括存储器和处理器，存储器上储存有在处理器上运行的计算机程序，处理器执行计算机程序时实现上述方法中的所有方法步骤或部分方法步骤。Based on the same inventive concept, the embodiments of the present application also provide an electronic device, including a memory and a processor, and a computer program running on the processor is stored in the memory. When the processor executes the computer program, all method steps or steps in the above method are implemented. Some method steps.
所称处理器可以是中央处理单元(Central Processing Unit，CPU)，还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field-Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等，处理器是计算机装置的控制中心，利用各种接口和 线路连接整个计算机装置的各个部分。The so-called processor can be a central processing unit (Central Processing Unit, CPU), other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), ready-made Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The processor is the control center of the computer device, and various parts of the computer device are connected by various interfaces and lines.
存储器可用于存储计算机程序和/或模块，处理器通过运行或执行存储在存储器内的计算机程序和/或模块，以及调用存储在存储器内的数据，实现计算机装置的各种功能。存储器可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作***、至少一个功能所需的应用程序(例如声音播放功能、图像播放功能等)；存储数据区可存储根据手机的使用所创建的数据(例如音频数据、视频数据等)。此外，存储器可以包括高速随机存取存储器，还可以包括非易失性存储器，例如硬盘、内存、插接式硬盘，智能存储卡(Smart Media Card，SMC)，安全数字(Secure Digital，SD)卡，闪存卡(Flash Card)、至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。The memory may be used to store computer programs and/or modules, and the processor implements various functions of the computer device by running or executing the computer programs and/or modules stored in the memory and calling data stored in the memory. The memory may mainly include a storage program area and a storage data area, where the storage program area can store an operating system and at least one application program required by at least one function (such as sound playback function, image playback function, etc.); the storage data area can store Use the created data (such as audio data, video data, etc.). In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as hard disks, memory, plug-in hard disks, smart media cards (SMC), and secure digital (SD) cards. , Flash Card, at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.
本领域内的技术人员应明白，本发明的实施例可提供为方法、***、服务器或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。Those skilled in the art should understand that the embodiments of the present invention can be provided as methods, systems, servers, or computer program products. Therefore, the present invention may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.
本发明是参照根据本发明实施例的方法、设备(***)、服务器和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多 个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present invention is described with reference to flowcharts and/or block diagrams of methods, devices (systems), servers, and computer program products according to embodiments of the present invention. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims (15)

  1. 一种WDM-PON***，应用于5G前传业务中，该***包括光线路终端OLT、光分配网络ODN，其特征在于：该***还包括：波长可调谐可控光模块OM、分布单元DU、移动前传小型可插拔模块CFM和有源天线处理单元AAU，其中：A WDM-PON system applied to 5G fronthaul services. The system includes an optical line terminal OLT and an optical distribution network ODN. It is characterized in that: the system also includes: a wavelength tunable and controllable optical module OM, a distribution unit DU, and a mobile Fronthaul small pluggable module CFM and active antenna processing unit AAU, including:
    OM插在DU的卡槽上，OM与OLT相连；The OM is inserted into the card slot of the DU, and the OM is connected to the OLT;
    CFM波长可调，插在AAU的卡槽上，CFM与ODN相连；The wavelength of CFM is adjustable, inserted in the card slot of AAU, CFM is connected with ODN;
    OLT包括主控单元和光路管理控制单元，光路管理控制单元内部的上行光信号与下行光信号分开传输、分别管理，实现在高速光信号中接收与发送低速管理数据，主控单元和光路管理控制单元共同管控光传输单元，所述光传输单元为OM或CFM。The OLT includes a main control unit and an optical path management control unit. The upstream optical signal and the downstream optical signal inside the optical path management control unit are transmitted separately and managed separately to realize the reception and transmission of low-speed management data in the high-speed optical signal. The main control unit and optical path management control The units jointly control the optical transmission unit, and the optical transmission unit is OM or CFM.
  2. 如权利要求1所述的WDM-PON***，其特征在于：所述光路管理控制单元包括：下行管理信息输入端口、第一信号发送器、第一光放大器、第一可调滤波器、第一信号接收器、下行管理信息输出端口、第一合分波器、上行管理信息输入端口、第二信号发送器、第二光放大器、第二可调滤波器、第二信号接收器、上行管理信息输出端口、第二合分波器，管理信息及数据流的路径包括：The WDM-PON system according to claim 1, wherein the optical path management control unit comprises: a downstream management information input port, a first signal transmitter, a first optical amplifier, a first tunable filter, a first Signal receiver, downstream management information output port, first combiner/demultiplexer, upstream management information input port, second signal transmitter, second optical amplifier, second tunable filter, second signal receiver, upstream management information Output port, second combiner/demultiplexer, management information and data flow path include:
    第一路径：下行管理信息输入端口、第一信号发送器、第一光放大器、第一合分波器；The first path: downstream management information input port, first signal transmitter, first optical amplifier, first combiner/demultiplexer;
    第二路径：第二合分波器、第一光放大器、第一可调滤波器、第一信号接收器、下行管理信息输出端口；Second path: second multiplexer/demultiplexer, first optical amplifier, first tunable filter, first signal receiver, downstream management information output port;
    第三路径：上行管理信息输入端口、第二信号发送器、第二光放大器、第二合分波器；Third path: upstream management information input port, second signal transmitter, second optical amplifier, second combiner/demultiplexer;
    第四路径：第一合分波器、第二光放大器、第二可调滤波器、第二信号接收器、上行管理信息输出端口。The fourth path: the first multiplexer/demultiplexer, the second optical amplifier, the second tunable filter, the second signal receiver, and the upstream management information output port.
  3. 如权利要求2所述的WDM-PON***，其特征在于：所述第一光放大器、第二光放大器均包括输入口、调顶单元、信号放大器、信号监控器、输出口，其中：The WDM-PON system according to claim 2, wherein the first optical amplifier and the second optical amplifier both include an input port, a top-adjusting unit, a signal amplifier, a signal monitor, and an output port, wherein:
    第一光放大器的输入口接收来自第二合分波器的下行光信号；第二光放大器的输入口接收来自第一合分波器的上行光信号；The input port of the first optical amplifier receives the downstream optical signal from the second multiplexer/demultiplexer; the input port of the second optical amplifier receives the upstream optical signal from the first multiplexer/demultiplexer;
    所述调顶单元利用偏置电流来调节信号放大器中光信号的功率电平，将低速电信号承载的管理信息加载到光信号上进行传输；The top adjustment unit uses the bias current to adjust the power level of the optical signal in the signal amplifier, and loads the management information carried by the low-speed electrical signal onto the optical signal for transmission;
    所述信号监控器将来自信号放大器的光信号发送给输出口，并对光信号进行分光操作，分出的一份光信号发送给第一可调滤波器/第二可调滤波器；The signal monitor sends the optical signal from the signal amplifier to the output port, performs a splitting operation on the optical signal, and sends a portion of the split optical signal to the first tunable filter/the second tunable filter;
    第一光放大器的输出口将下行光信号发送给第一合分波器；第二光放大器的输出口将上行光信号发送给第二合分波器。The output port of the first optical amplifier sends the downstream optical signal to the first combiner/demultiplexer; the output port of the second optical amplifier sends the upstream optical signal to the second combiner/demultiplexer.
  4. 如权利要求2所述的WDM-PON***，其特征在于：所述主控单元通过下行管理信息输入端口、上行管理信息输入端口发送管理信息给光路管理控制单元处理，通过下行管理信息输出端口、上行管理信息输出端口接收光路管理控制单元镜像输出的数据信息进行分析处理。The WDM-PON system according to claim 2, wherein the main control unit sends the management information to the optical path management control unit for processing through the downstream management information input port and the upstream management information input port, and the downstream management information output port, The upstream management information output port receives the data information mirrored and output by the optical path management control unit for analysis and processing.
  5. 如权利要求1所述的WDM-PON***，其特征在于：所述OLT还包括波长复用器WM，OM通过光纤与OLT WM分支相连接；光路管理控制单元一端与WM连接，另一端与ODN连接。The WDM-PON system according to claim 1, wherein the OLT further includes a wavelength multiplexer WM, and the OM is connected to the OLT WM branch through an optical fiber; one end of the optical path management control unit is connected to the WM, and the other end is connected to the ODN connection.
  6. 如权利要求1所述的WDM-PON***，其特征在于：所述ODN由无热波导阵列光栅AAWG构成，ODN通过光纤与OLT连接，CFM通过光纤与ODN AAWG分支相连接。The WDM-PON system according to claim 1, wherein the ODN is composed of an athermal waveguide array grating AAWG, the ODN is connected to the OLT through an optical fiber, and the CFM is connected to the ODN AAWG branch through an optical fiber.
  7. 如权利要求2所述的WDM-PON***，其特征在于：所述OLT通过网络与网元管理***EMS相连，用户通过EMS发送管理 任务给OLT，对WDM-PON***进行管理控制。The WDM-PON system according to claim 2, wherein the OLT is connected to the network element management system EMS through a network, and the user sends management tasks to the OLT through the EMS to manage and control the WDM-PON system.
  8. 如权利要求7所述的WDM-PON***，其特征在于：所述对WDM-PON***进行管理控制，包括以下步骤：8. The WDM-PON system according to claim 7, wherein the management and control of the WDM-PON system includes the following steps:
    对WDM-PON***中的光传输单元进行管理控制时，通过EMS发送任务单给OLT，OLT的主控单元将接收的任务单存储到队列中；When managing and controlling the optical transmission unit in the WDM-PON system, the task list is sent to the OLT through EMS, and the main control unit of the OLT stores the received task list in the queue;
    OLT的主控单元从队列中获取任务单，处理获取的任务单。The main control unit of the OLT obtains the task order from the queue and processes the obtained task order.
  9. 如权利要求8所述的WDM-PON***，其特征在于：所述OLT的主控单元通过管理信息及数据流的路径对光传输单元的管控分别为：8. The WDM-PON system according to claim 8, wherein the main control unit of the OLT manages and controls the optical transmission unit through the path of management information and data flow:
    所述第一路径：用来设置CFM；The first path: used to set CFM;
    所述第二路径：用来读取OM；The second path: used to read the OM;
    所述第三路径：用来设置OM；The third path: used to set OM;
    所述第四路径：用来读取CFM。The fourth path: used to read CFM.
  10. 应用于权利要求7所述的WDM-PON***的管控方法，其特征在于，包括以下步骤：The management and control method applied to the WDM-PON system according to claim 7, characterized in that it comprises the following steps:
    对WDM-PON***中的光传输单元进行管理控制时，通过EMS发送任务单给OLT，OLT的主控单元将接收的任务单存储到队列中；OLT的主控单元从队列中获取任务单，处理获取的任务单。When managing and controlling the optical transmission unit in the WDM-PON system, the task list is sent to the OLT through the EMS, and the main control unit of the OLT stores the received task order in the queue; the main control unit of the OLT obtains the task order from the queue, Process the acquired task list.
  11. 如权利要求10所述的方法，其特征在于：还包括以下步骤：The method of claim 10, further comprising the following steps:
    对WDM-PON***中的OM、CFM进行管理控制之前，对OLT进行初始化：主控单元建立光传输单元信息存储表，该表中存储有：光传输单元的ID、SN、发送波长范围、接收波长范围、当前发送波长、当前接收波长、发送光功率、接收光功率、电压、电流、温度、速率等级、在位信息；Before managing and controlling the OM and CFM in the WDM-PON system, initialize the OLT: the main control unit establishes an optical transmission unit information storage table, which stores: the ID, SN, transmission wavelength range, and reception of the optical transmission unit Wavelength range, current sending wavelength, current receiving wavelength, sending optical power, receiving optical power, voltage, current, temperature, rate level, presence information;
    轮询获取全波长范围内各光传输单元的信息，并将获取到的信息 存储到光传输单元信息存储表中。Polling obtains the information of each optical transmission unit in the full wavelength range, and stores the obtained information in the optical transmission unit information storage table.
  12. 如权利要求11所述的方法，其特征在于：处理获取的任务单，包括以下步骤：The method according to claim 11, wherein: processing the acquired task list comprises the following steps:
    若获取的任务单为设置任务，设置WDM-PON***中某个光传输单元的配置时，查询光传输单元信息存储表，获取该光传输单元的ID号、当前接收波长λ＇；If the obtained task list is a set task, when setting the configuration of an optical transmission unit in the WDM-PON system, query the optical transmission unit information storage table to obtain the ID number of the optical transmission unit and the current receiving wavelength λ';
    OLT的主控单元将管理设置信息发给信号发送器，此时管理设置信息在低速电信号中承载，信号发送器将低速电信号发送给光放大器的调顶单元；The main control unit of the OLT sends the management setting information to the signal transmitter. At this time, the management setting information is carried in the low-speed electrical signal, and the signal transmitter sends the low-speed electrical signal to the top adjustment unit of the optical amplifier;
    光放大器的调顶单元将低速电信号承载的管理信息加载到波长为λ＇的光信号上进行传输，光放大器的信号放大器将光信号功率进行放大并发送出去；The top adjustment unit of the optical amplifier loads the management information carried by the low-speed electrical signal onto the optical signal with a wavelength of λ'for transmission, and the signal amplifier of the optical amplifier amplifies the optical signal power and sends it out;
    光信号经过WM或AAWG在光纤中传送到光传输单元，光传输单元接收光信号并对管理设置消息进行处理。The optical signal is transmitted to the optical transmission unit in the optical fiber through WM or AAWG, and the optical transmission unit receives the optical signal and processes the management setting message.
  13. 如权利要求12所述的方法，其特征在于：The method of claim 12, wherein:
    所述光传输单元为OM时，光传输单元的当前接收波长λ＇为第三路径对应的上行波长；When the optical transmission unit is OM, the current reception wavelength λ'of the optical transmission unit is the uplink wavelength corresponding to the third path;
    所述光传输单元为CFM时，光传输单元的当前接收波长λ＇为第一路径对应的下行波长。When the optical transmission unit is CFM, the current reception wavelength λ'of the optical transmission unit is the downlink wavelength corresponding to the first path.
  14. 如权利要求11所述的方法，其特征在于：处理获取的任务单，包括以下步骤：The method according to claim 11, wherein: processing the acquired task list comprises the following steps:
    若获取的任务单为读取任务，查询WDM-PON***中某个光传输单元的信息时，OLT的主控单元查询光传输单元信息存储表，获取该光传输单元的ID号、当前发送波长λ；If the obtained task list is a reading task, when querying the information of an optical transmission unit in the WDM-PON system, the main control unit of the OLT queries the optical transmission unit information storage table to obtain the ID number and current sending wavelength of the optical transmission unit λ;
    OLT的主控单元设置可调滤波器从含有多个波长的光信号中过 滤出波长为λ的光信号，可调滤波器将波长为λ的光信号传送给信号接收器；The main control unit of the OLT sets a tunable filter to filter out the optical signal with wavelength λ from the optical signal with multiple wavelengths, and the tunable filter transmits the optical signal with wavelength λ to the signal receiver;
    信号接收器完成光电转换，将波长为λ的光信号转换成电信号，并将低速电信号输出；The signal receiver completes photoelectric conversion, converts the optical signal with wavelength λ into electrical signal, and outputs low-speed electrical signal;
    主控单元接收低速电信号，并对低速电信号中的消息进行处理，通过EMS将查询到的信息反馈给用户。The main control unit receives the low-speed electrical signal, processes the messages in the low-speed electrical signal, and feeds back the inquired information to the user through the EMS.
  15. 如权利要求14所述的方法，其特征在于：The method of claim 14, wherein:
    所述光传输单元为OM时，光传输单元的当前发送波长λ为第二路径对应的下行波长；When the optical transmission unit is OM, the current transmission wavelength λ of the optical transmission unit is the downlink wavelength corresponding to the second path;
    所述光传输单元为CFM时，光传输单元的当前发送波长λ为第四路径对应的上行波长。When the optical transmission unit is a CFM, the current transmission wavelength λ of the optical transmission unit is the uplink wavelength corresponding to the fourth path.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113810119A (en) * 2021-11-05 2021-12-17 青岛光盈光电技术有限责任公司 Optical communication system of 5G forward transmission MWDM system
CN113872690A (en) * 2021-09-29 2021-12-31 烽火通信科技股份有限公司 Method and device for automatically monitoring and adjusting wavelength of TEC-free DML optical module in CWDM system
CN115632740A (en) * 2022-10-09 2023-01-20 上海欣诺通信技术股份有限公司 Forwarding method and system
WO2023066349A1 (en) * 2021-10-21 2023-04-27 ***通信有限公司研究院 Method for adjusting power of optical module, optical module, and storage medium
WO2024027435A1 (en) * 2022-08-05 2024-02-08 华为技术有限公司 Optical sending module, optical sending device, and method for adjusting pilot-tune depth

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110430006B (en) * 2019-07-10 2020-10-09 烽火通信科技股份有限公司 WDM-PON system and control method thereof
CN113472444A (en) * 2020-03-30 2021-10-01 ***通信集团浙江有限公司 Forwarding method and system based on 5G network
CN113541783A (en) * 2020-04-21 2021-10-22 中兴通讯股份有限公司 Optical module, parameter transmission method, parameter detection method, parameter control method and parameter forwarding system thereof
CN113746551B (en) * 2020-05-28 2023-03-28 中国电信股份有限公司 Forward transmission system based on wavelength division multiplexing
CN111970061B (en) * 2020-08-11 2022-06-21 电子科技大学中山学院 Forwarding network, data transmission method and device
CN112636826B (en) * 2021-03-15 2021-06-08 深圳市迅特通信技术股份有限公司 Optical module testing system with OAM function and testing method
CN113630181A (en) * 2021-08-11 2021-11-09 中国电信股份有限公司 Cross-network data transmission method, device, system, electronic device and medium
CN114422886B (en) * 2022-01-24 2023-03-17 上海欣诺通信技术股份有限公司 Intelligent light splitting management and control system based on end-to-end

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018054491A1 (en) * 2016-09-23 2018-03-29 Telefonaktiebolaget Lm Ericsson (Publ) Method and node for facilitating optical supervisory channel communications in an optical network
CN108259118A (en) * 2018-01-12 2018-07-06 烽火通信科技股份有限公司 The Added Management control device and method of WDM PON systems
US10277353B1 (en) * 2017-12-19 2019-04-30 Juniper Networks, Inc. Wavelength provisioning for customer premise equipment (CPE) in dense wavelength-division multiplex (DWDM) networks
CN110430006A (en) * 2019-07-10 2019-11-08 烽火通信科技股份有限公司 WDM-PON system and its management-control method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2324582A1 (en) * 2008-08-19 2011-05-25 Telefonaktiebolaget L M Ericsson (PUBL) Improvements in or relating to modulation in an optical network
CN107872288B (en) * 2016-09-23 2020-04-07 上海诺基亚贝尔股份有限公司 Uplink transmission method and device in WDM PON system
CN109586839B (en) * 2019-01-07 2020-06-30 烽火通信科技股份有限公司 Optical line terminal and service channel mirroring method
CN109672475A (en) * 2019-01-09 2019-04-23 杭州芯耘光电科技有限公司 It is a kind of can remote adjustment wavelength two-way transmission optical module

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018054491A1 (en) * 2016-09-23 2018-03-29 Telefonaktiebolaget Lm Ericsson (Publ) Method and node for facilitating optical supervisory channel communications in an optical network
US10277353B1 (en) * 2017-12-19 2019-04-30 Juniper Networks, Inc. Wavelength provisioning for customer premise equipment (CPE) in dense wavelength-division multiplex (DWDM) networks
CN108259118A (en) * 2018-01-12 2018-07-06 烽火通信科技股份有限公司 The Added Management control device and method of WDM PON systems
CN110430006A (en) * 2019-07-10 2019-11-08 烽火通信科技股份有限公司 WDM-PON system and its management-control method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEN AIMIN: "The Technical Background, Application and Prospect of NG-PON", ZTE TECHNOLOGY JOURNAL, vol. 24, no. 6, 6 December 2018 (2018-12-06), pages 56 - 59, XP055772369, ISSN: 1009-6868, DOI: 10.19729/j.cnki.1009-6868.2018.06.011 *
ZHANG DEZHI; ZHE DU; JIANG MING; ZHANG JUN: "High speed WDM-PON technology for 5G fronthaul network", 2018 ASIA COMMUNICATIONS AND PHOTONICS CONFERENCE (ACP), 26 October 2018 (2018-10-26), pages 1 - 3, XP033487210, DOI: 10.1109/ACP.2018.8596261 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113872690A (en) * 2021-09-29 2021-12-31 烽火通信科技股份有限公司 Method and device for automatically monitoring and adjusting wavelength of TEC-free DML optical module in CWDM system
WO2023066349A1 (en) * 2021-10-21 2023-04-27 ***通信有限公司研究院 Method for adjusting power of optical module, optical module, and storage medium
CN113810119A (en) * 2021-11-05 2021-12-17 青岛光盈光电技术有限责任公司 Optical communication system of 5G forward transmission MWDM system
WO2024027435A1 (en) * 2022-08-05 2024-02-08 华为技术有限公司 Optical sending module, optical sending device, and method for adjusting pilot-tune depth
CN115632740A (en) * 2022-10-09 2023-01-20 上海欣诺通信技术股份有限公司 Forwarding method and system
CN115632740B (en) * 2022-10-09 2023-11-07 上海欣诺通信技术股份有限公司 Forward transmission method and system

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