WO2022032961A1 - 通信站点、光通信系统、数据传输方法及存储介质 - Google Patents

通信站点、光通信系统、数据传输方法及存储介质 Download PDF

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Publication number
WO2022032961A1
WO2022032961A1 PCT/CN2020/138425 CN2020138425W WO2022032961A1 WO 2022032961 A1 WO2022032961 A1 WO 2022032961A1 CN 2020138425 W CN2020138425 W CN 2020138425W WO 2022032961 A1 WO2022032961 A1 WO 2022032961A1
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Prior art keywords
communication
optical
site
service
roadm
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PCT/CN2020/138425
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English (en)
French (fr)
Inventor
肖礼
喻杰奎
卢刚
刘朝霞
胡强高
黄丽艳
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Accelink Technologies Co Ltd
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Accelink Technologies Co Ltd
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Priority to EP20949453.3A priority Critical patent/EP4199374A4/en
Priority to US18/041,387 priority patent/US12308948B2/en
Publication of WO2022032961A1 publication Critical patent/WO2022032961A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0287—Protection in WDM systems
    • 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
    • H04J14/02762—Spectrum slot allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/03—Arrangements for fault recovery
    • H04B10/032—Arrangements for fault recovery using working and protection systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/03—Arrangements for fault recovery
    • H04B10/038—Arrangements for fault recovery using bypasses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H04B10/07955—Monitoring or measuring power
    • 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
    • H04J14/021—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]
    • H04J14/0212—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM] using optical switches or wavelength selective switches [WSS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0287—Protection in WDM systems
    • H04J14/0289—Optical multiplex section protection
    • H04J14/0291—Shared protection at the optical multiplex section (1:1, n:m)

Definitions

  • the present disclosure relates to the technical field of optical communication, but is not limited to the technical field of optical communication, and in particular, relates to a communication site, an optical communication system, a data transmission method, and a storage medium.
  • Reconfigurable Optical Add-Drop Multiplexer (ROADM) equipment is a device used in wavelength division multiplexing (Wavelength Division Multiplexing, WDM) optical network systems, which can arbitrarily assign up and down services according to the needs of the network wavelengths to achieve flexible scheduling of services.
  • WDM wavelength division multiplexing
  • the optical layer service protection method of the optical network usually adopts the 1+1 optical fiber line automatic switching protection of the traditional optical transmission network, but this method requires each optical fiber link in the optical network to have a backup optical fiber.
  • this method requires each optical fiber link in the optical network to have a backup optical fiber.
  • not all fiber links have backup fibers.
  • only the 1+1 fiber line automatic switching protection that protects the fiber link cannot protect the equipment failures in the communication site. Therefore, the 1+1 fiber line automatic switching protection method cannot achieve high efficiency for the optical layer business of the optical network. light protection.
  • the embodiments of the present disclosure provide a communication site, an optical communication system, a data transmission method, and a storage medium.
  • An embodiment of the present disclosure provides a communication site, where the communication site is a first site, including:
  • the first reconfigurable optical add-drop multiplexing ROADM device includes: a first port, where the first port can be used to connect a cable in a first direction of the network;
  • a second ROADM device is connected to the first ROADM device, and the second ROADM device includes: a second port, the second port can be used to connect a cable in the second direction of the network; the The second direction is different from the first direction;
  • Optical protection equipment wherein the number of the optical protection equipment is consistent with the number of service types transmitted by the communication site;
  • the optical protection device is respectively connected to the first ROADM device and the second ROADM device, and is used to control the first site to perform transmission with the second site by transmitting from the first direction corresponding to the first ROADM device.
  • the communication corresponding to the service, or the communication corresponding to the service with the second site is transmitted from the second direction corresponding to the second ROADM device.
  • Embodiments of the present disclosure also provide an optical communication system, including:
  • communication can be performed from a first direction or a second direction; the second direction is different from the first direction.
  • An embodiment of the present disclosure further provides a data transmission method, the method is applied to the first site, and the method includes:
  • the communication is switched to the communication for performing the corresponding service with the second site from the second direction corresponding to the second ROADM device included in the first site.
  • Embodiments of the present disclosure further provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium; after the computer-executable instructions are executed by a processor, one or more of the foregoing technical solutions can be provided. data transfer method.
  • the first site includes a first ROADM device, a second ROADM device, and optical protection devices corresponding to different service types.
  • the first ROADM device and the second ROADM device respectively communicate with the second site from two different directions; and the optical protection devices in the first site corresponding to the services of the second site are respectively connected to the first ROADM device and the second ROADM device.
  • the optical protection device controls the first site to perform service communication with the second site from the first direction corresponding to the first ROADM device, or to perform service communication with the second site from the second direction corresponding to the second ROADM device.
  • optical protection devices By setting up optical protection devices corresponding to the number of transmission service types in the communication site, group protection for different types of services is realized; for the same type of services, the optical protection devices are respectively connected to the first ROADM device and the second ROADM device. Two transmission links in different directions are formed between the communication stations, so as to protect the business communication between the communication stations. Moreover, since the communication site includes two ROADM devices, when the ROADM device fails, service communication is continued through another ROADM device, thereby realizing the protection of the ROADM device.
  • FIG. 1 is a schematic block diagram of the composition structure of a communication site provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic block diagram of an optional composition structure of a communication site provided by an embodiment of the present disclosure
  • FIG. 3 is a schematic block diagram of an optional composition structure of a communication site provided by an embodiment of the present disclosure
  • FIG. 4 is a schematic block diagram of an optional composition structure of a communication site provided by an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of an optical communication system provided by an embodiment of the present disclosure.
  • FIG. 6 is a schematic flowchart of a data transmission method provided by an embodiment of the present disclosure.
  • FIG. 7 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a three-point ring network optical communication system provided by an embodiment of the present disclosure.
  • the ROADM reconfigures the route; since the route configuration time of the ROADM device is relatively slow, the protection switching time may be relatively slow.
  • FIG. 1 is a schematic block diagram of the composition structure of a communication site provided by an embodiment of the present disclosure.
  • the communication site is a first site, including:
  • the first ROADM device includes: a first port, where the first port can be used to connect a cable in a first direction of the network;
  • a second ROADM device is connected to the first ROADM device, and the second ROADM device includes: a second port, the second port can be used to connect a cable in the second direction of the network; the The second direction is different from the first direction;
  • Optical protection equipment wherein the number of optical protection equipment is consistent with the number of service types transmitted by the communication site;
  • the optical protection device is respectively connected to the first ROADM device and the second ROADM device, and is used to control the first site to perform transmission with the second site by transmitting from the first direction corresponding to the first ROADM device.
  • the communication corresponding to the service, or the communication corresponding to the service with the second site is transmitted from the second direction corresponding to the second ROADM device.
  • the communication site provided by the embodiment of the present disclosure is applicable to any communication site in a ring network optical layer service protection scenario.
  • the optical protection device is a transmission device operating at the optical layer, for example, an OLP device.
  • Optical protection equipment has the characteristics of independent and transparent transmission signal, safe and reliable, and fast fault recovery.
  • the optical protection devices can be classified into 1+1 type optical protection devices and 1:1 type optical protection devices according to different working models. Among them, at the transmitting end, the 1+1 type optical protection device splits the received optical signal and transmits it from the two connected optical fiber lines to the network at the same time; at the receiving end, the 1+1 type optical protection device is based on the received two optical signals. The power of the optical signal is selected to receive one optical signal.
  • the 1:1 type optical protection device selects one optical fiber line as the main line from the two connected optical fiber lines, and transmits the received optical signal to the network through the main line; at the receiving end, the 1:1 type optical protection device If the device detects that the optical signal power of the main line has dropped, it will automatically switch the transmission signal route from the main line to the standby line. At the same time, the 1:1 optical protection device at the sending end will also switch the line to the standby line synchronously.
  • the first site includes a plurality of optical protection devices, wherein the number of optical protection devices is consistent with the number of service types transmitted by the communication site.
  • the type of service transmitted by the communication station may be determined by the station with which it communicates.
  • the optical protection device 1 is responsible for the business of communicating between the first site and the second site
  • the optical protection device 2 is responsible for the business of communicating between the first site and the third site, etc., which are not specifically limited here.
  • the ROADM device is a device or device used in a dense wavelength division multiplexing system, and is used to dynamically add or drop service optical signals through remote reconfiguration.
  • the first site includes at least two ROADM devices, which are used to connect cables in different directions of the network, so that there are at least two different directions of communication between the first site and the second site cable.
  • the first ROADM device and the second ROADM device are further configured to: when the first ROADM device fails, the first site transmits service communication with the second site through the second direction corresponding to the second ROADM device or, when the second ROADM device fails, the first site transmits service communication with the second site through the first direction corresponding to the first ROADM device.
  • the first site includes an optical protection device, a first ROADM device, and a second ROADM device.
  • the optical protection device is respectively connected with the first ROADM device and the second ROADM device.
  • the first port on the first ROADM device is connected to the network through the cable in the first direction;
  • the second port on the second ROADM device is connected to the network through the cable in the second direction; so that the first site is connected to the network.
  • the first site controls the optical protection device to perform service communication with the second site from the first direction corresponding to the first ROADM device, or perform service communication with the second site from the second direction corresponding to the second ROADM device.
  • the services of the communication site are protected in groups according to different service types; for the same type of service, the service communication is protected through two transmission links in different directions.
  • the communication site includes two ROADM devices, when the ROADM device fails, service communication is continued through another ROADM device, thereby realizing the protection of the ROADM device.
  • the optical protection device further includes a transceiver;
  • FIG. 2 is a schematic block diagram of an optional structure of a communication site provided by an embodiment of the present disclosure, as shown in FIG. 2 , wherein the transceiver include:
  • the business optical signal processing module is used to send and receive business optical signals
  • the optical switch includes: an input end connected to a service optical signal processing module, and an output end connected to the first ROADM device or the second ROADM device.
  • the service optical signal refers to an optical signal used to carry service data.
  • the service optical signal processing module is an optoelectronic device used for photoelectric and electro-optical conversion.
  • the service optical signal processing module may be an XFP optical module, an SFP optical module, or the like. Here Not specifically limited.
  • the service optical signal processing module includes an optical transmitting device, an optical receiving device, a booster circuit, and a Microcontroller Unit (MCU).
  • the optical transmitting device is used to convert electrical signals into optical signals, such as laser chips, etc.
  • the optical receiving device is used to convert optical signals into electrical signals, such as avalanche diodes, etc.
  • the boost circuit is used to provide bias for the optical receiving device Voltage
  • MCU is used to control the voltage output by the boost circuit.
  • an optical switch is an optical device with one or more optional transmission ports, which is used to physically switch or logically operate an optical signal in an optical transmission line or an integrated optical circuit.
  • the optical switch can be divided into 1 ⁇ 1 optical switch, 1 ⁇ 2 optical switch, 1 ⁇ N optical switch, 2 ⁇ 2 optical switch, M ⁇ N optical switch and so on.
  • M is the number of input ports of the optical switch
  • N is the number of output ports.
  • the number of output ports of the optical switch may be determined according to the number of ROADM devices in the first site, so as to select the corresponding optical switch.
  • the optical protection device further includes a transceiver device, and the transceiver device includes a service optical signal processing module and an optical switch.
  • the service optical signal processing module is connected to the input end of the optical switch, and the output end of the optical switch is connected to the first ROADM device or the second ROADM device.
  • the service optical signal processing module receives the service optical signal transmitted in the first direction corresponding to the first ROADM device or the second direction corresponding to the second ROADM device through the optical switch, or the service optical signal processing module transmits the service optical signal to the first ROADM device through the optical switch.
  • the service optical signal is sent in the first direction corresponding to the ROADM device or in the second direction corresponding to the second ROADM device.
  • the first site includes two ROADM devices
  • the optical protection device corresponding to the service of the second site includes a service optical signal processing module and a 1 ⁇ 2 optical switch, and the input end of the 1 ⁇ 2 optical switch is connected to the service optical signal.
  • the processing module is connected, and the two output ends are respectively connected with the first ROADM device and the second ROADM device in the first site.
  • the optical protection device further includes: an optical splitter, the input end of the optical splitter is connected to the output end of the optical switch, and the output end of the optical splitter is respectively connected to the first ROADM and the second ROADM.
  • a service optical signal output by an optical switch is divided into multiple service optical signals by an optical splitter, and transmitted to the first ROADM device and the second ROADM device respectively, realizing dual transmission and selection of optical protection devices.
  • the service optical signal can be received or sent through the communication links in different directions between the communication sites.
  • FIG. 3 is a schematic block diagram of an optional composition structure of a communication site provided by an embodiment of the present disclosure; the first site further includes:
  • an optical power detector which is respectively connected between the optical protection device and the first ROADM device and the second ROADM device, and is used to detect the service optical signal transmitted in the first direction and/or the second direction The transmitted service optical signal; wherein, the detection result of the optical power detector is used to determine whether to transmit the communication with the second site from the first direction or to transmit the communication with the second site from the second direction whether the communication is normal;
  • the optical protection device is configured to control the first station to transmit, from the second direction, the communication of the corresponding service with the second station when the communication with the second station is transmitted from the first direction or, when the communication with the second station is transmitted from the second direction, the first station is controlled to transmit the communication of the corresponding service with the second station from the first direction.
  • the optical power detector refers to a device for measuring absolute optical power or relative loss of optical power passing through a section of optical fiber.
  • optical power meters for example, optical power meters, avalanche photodiodes, PIN photodiodes, etc.
  • the optical power detector can detect the input optical signal power of each input port in real time, and feed back the optical signal power detection result of each input port to the optical protection device as a basis for adjusting the transmission direction between communication sites.
  • an optical power detector is connected between the optical protection device and the first ROADM device, and between the optical protection device and the second ROADM device.
  • the power of the service optical signal transmitted in the first direction corresponding to the first ROADM device and the power of the service optical signal transmitted in the second direction corresponding to the second ROADM device is respectively detected by the optical power detector.
  • the first site includes an optical power detector, and the optical power detector is connected between the optical protection device and the first ROADM device, and between the optical protection device and the second ROADM device.
  • the service optical signal transmitted in the first direction corresponding to the first ROADM device is detected by the optical power detector, and/or the service optical signal transmitted in the second direction corresponding to the second ROADM device is detected.
  • the first station transmits the communication with the second station in the first direction
  • the detection result indicates that the communication between the first station and the second station from the first direction is abnormal
  • the first station switches to transmit the communication with the second station from the second direction through the optical protection device.
  • the first station transmits the communication with the second station in the second direction
  • the detection result indicates that the communication between the first station and the second station from the second direction is abnormal
  • the first station switches to transmit the communication with the second station from the first direction through the optical protection device.
  • the power of the service optical signal transmitted in the first direction and/or the second direction is measured by the optical power detector in the site, and the power detection result is used as the basis for the optical protection device to switch the transmission direction between communication sites.
  • the optical protection device switches to another direction to continue the business communication between the communication stations.
  • the output end of the optical splitter in the optical protection device is respectively connected to the input end of the first ROADM device and the input end of the second ROADM device, and the input end of the optical splitter is connected to the input end of the second ROADM device.
  • the output end of the service optical signal processing module is connected; the first ROADM device is configured to transmit the optical signal of the first wavelength and block the optical signal of other wavelengths; the second ROADM device is configured to transmit the optical signal of the second wavelength optical signals and blocks other wavelengths of optical signals;
  • the optical signal of the first wavelength performs service communication with the second site from the first direction corresponding to the first ROADM device
  • the optical signal of the second wavelength communicates with the third site from the second direction corresponding to the second ROADM device conduct business communications.
  • FIG. 4 is a schematic block diagram of an optional composition structure of a communication station provided by an embodiment of the present disclosure.
  • the first ROADM device and the second ROADM device include a flexible grid optical wavelength selective switch WSS; the flexible grid WSS is respectively connected to the optical protection device in the first site, and is used to dynamically adjust the wavelength channel interval , to send and receive service optical signals of different wavelengths.
  • the flexible grid WSS is an important optical device in the ROADM device. It has the function that optical signals of any wavelength can go up and down on any port, and can support higher modulation rates, more network channels, and higher network flexibility.
  • WSS based on liquid crystal on silicon WSS based on liquid crystal cell array and birefringent wedge angle plate, etc.
  • one end of the flexible grid WSS in the ROADM device is connected to the light protection device, and the other end is connected to the network through a cable.
  • the wavelength channel interval is dynamically adjusted through the flexible grid WSS, so that service optical signals of any wavelength pass through the add/drop ports of the flexible grid WSS, and the optical protection device can receive and transmit service optical signals of different wavelengths.
  • the flexible grid WSS can also be composed of a 1 ⁇ N and an N ⁇ 1 WSS, wherein the 1 ⁇ N WSS can output any wavelength combination optical signal in the wavelength multiplexed optical signal of the input port to the on any output port.
  • an N ⁇ 1 WSS can select any wavelength-combined optical signal from the optical signals of any input port and combine it with the wavelength-combined optical signals of other input ports for output; Downlink optical signals of any wavelength to achieve the effect of dynamically adjusting the wavelength channel interval and receiving and sending optical signals of different wavelengths.
  • the first ROADM device and the second ROADM device include: two flexible grids WSS; the input of the flexible grid WSS and the output of the optical splitter in the optical protection device The input end of the optical splitter is connected to the output end of the service optical signal processing module; the flexible grid WSS is configured to filter the received service optical signal to obtain two service optical signals with different bandwidths. Signal.
  • the optical splitter divides the broadband optical signal output by the service optical signal processing module into two broadband optical signals; Filter to form two multi-wavelength optical signals with different bandwidths; and transmit the two multi-wavelength optical signals with different bandwidths through the first direction corresponding to the first ROADM device or the second direction corresponding to the second ROADM device respectively. For the second and third sites.
  • the flexible grid WSS can not only dynamically adjust the wavelength channel interval, realize the transmission and reception of service optical signals of different wavelengths, but also realize the reconfigurable characteristics of ROADM equipment, and its WSS can be switched between any input and output ports. Greatly improve the networking capability of dense wavelength division multiplexing equipment.
  • FIG. 5 is a schematic structural diagram of an optical communication system provided by an embodiment of the present disclosure.
  • the system includes:
  • At least two communication stations wherein, between the two communication stations, communication can be performed from a first direction or a second direction; the second direction is different from the first direction.
  • the two communication sites are the communication sites of any one of the aforementioned FIG. 1 to FIG. 4;
  • the two communication sites both include an optical protection device, a first ROADM device, and a second ROADM device; and the optical protection device is connected to the first ROADM device and the second ROADM device respectively. device is connected.
  • the first site is respectively connected to the second site through the first direction corresponding to the first ROADM device and the second direction corresponding to the second ROADM device, so that there are two transmission paths in different directions between the two communication sites.
  • the first site controls the optical protection device corresponding to the service of the second site to perform service communication with the second site from the first direction corresponding to the first ROADM device, or, from the second direction corresponding to the second ROADM device to the second site. conduct business communications.
  • the number of communication stations in the optical communication system can be set according to actual needs; correspondingly, the settings of the optical protection equipment in the communication station can also be set according to the number of communication stations in the optical communication system, so that the optical protection
  • the number of devices is consistent with the number of service types transmitted by the communication site.
  • the number of ROADM devices in the communication site can also be set according to actual needs, but each communication site should include at least two ROADM devices, respectively corresponding to the service optical signal transmission in different directions, so that at least Including two transmission channels in different directions for corresponding business communication.
  • the network topology of the optical communication system includes: a ring network structure
  • the first direction is a clockwise direction and the second direction is a counterclockwise direction;
  • the first direction is a counterclockwise direction and the second direction is a clockwise direction.
  • the ring network structure means that each communication site in the optical communication system is connected by a cable to form a closed ring communication line connected end to end.
  • Each communication station in the ring network has two transmission paths in opposite directions, one is clockwise and the other is counterclockwise.
  • the network topology of the optical communication system includes: a mesh network structure
  • the first direction and the second direction correspond to different optical links between two stations that communicate with each other.
  • each communication station in the optical communication system can be connected by a cable; each communication station in the mesh network has at least two transmission links in different directions.
  • FIG. 6 is a schematic flowchart of a data transmission method provided by an embodiment of the present disclosure; the method is applied to the first site, including:
  • Step 601 Detecting whether a communication abnormality occurs when the communication of the corresponding service is carried out with the second site by transmitting from the first direction corresponding to the first ROADM device included in the first site;
  • Step 602 When a communication abnormality is detected, the communication is switched to transmit the communication of the corresponding service with the second site from the second direction corresponding to the second ROADM device included in the first site.
  • the first site includes an optical protection device, a first ROADM device, and a second ROADM device.
  • the optical protection device is connected to the first ROADM device and the second ROADM device respectively; the first site is connected to the second site through the first direction corresponding to the first ROADM device and the second direction corresponding to the second ROADM device, so that the two There are two transmission paths in different directions between communication sites.
  • the first site further includes an optical power detector, which is respectively connected between the optical protection device and the first ROADM device and the second ROADM device.
  • an optical power detector is used to detect the power of the service optical signal transmitted in the first direction corresponding to the first ROADM device. Determine whether the communication from the first direction with the second site is abnormal through the optical power detection result; and when it is detected that the communication is abnormal, switch the communication to the second direction corresponding to the second ROADM device to transmit the communication with the second site. business communication.
  • the step 601 may include: detecting the first direction in real time when the communication of the corresponding service with the second site is transmitted from the first direction corresponding to the first ROADM device included in the first site The power of the transmitted service optical signal is compared with the preset minimum power threshold. When the power of the service optical signal transmitted in the first direction is lower than the minimum power threshold, it is determined that the communication between the first direction and the second site is abnormal. .
  • the minimum power threshold refers to the minimum input optical power required by the optical receiving device under the condition that the bit error bit rate required by the service communication of the communication site is guaranteed to be met. It can be set according to actual needs, and there are no specific restrictions here.
  • step 602 includes:
  • the optical protection device corresponding to the communication service in the first site switches the communication from the first direction corresponding to the first ROADM device to the first direction included in the first site.
  • the second direction corresponding to the two ROADM devices transmits the communication of the corresponding service with the second site.
  • the optical power detector in the first site feeds back the detection result to the first site.
  • the optical protection device corresponding to the communication service of the second site the optical protection device switches the communication from the first direction corresponding to the current first ROADM device to the second direction corresponding to the second ROADM device through the optical switch.
  • FIG. 7 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure; the method further includes:
  • Step 603 According to the service of the communication, adjust the flexible grid WSS of the first ROADM device or the second ROADM device in the first site, so as to communicate with the second site by the service optical signal of the wavelength corresponding to the service. communication.
  • the first ROADM device and the second ROADM device include a flexible grid WSS, and the wavelength channel interval is dynamically adjusted through the flexible grid WSS, so that service optical signals of any wavelength can be upstream or downstream through the flexible grid WSS. .
  • an embodiment of the present disclosure further provides a storage medium, which is a computer-readable storage medium, such as a memory including a computer program, and the computer program can be executed by a processor to complete the steps of the foregoing method.
  • the computer-readable storage medium can be magnetic random access memory (FRAM, ferromagnetic random access memory), read only memory (ROM, Read Only Memory), programmable read only memory (PROM, Programmable Read-Only Memory), erasable Programmable Read-Only Memory (EPROM, Erasable Programmable Read-Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Flash Memory (Flash Memory), Magnetic Surface Memory, Optical Disc , or CD-ROM (CD-ROM, Compact Disc Read-Only Memory) and other memory.
  • FRAM magnetic random access memory
  • ROM read only memory
  • PROM programmable Read-Only Memory
  • EPROM Erasable Programmable Read-Only Memory
  • This embodiment of the present disclosure implements grouping protection for different types of services by setting optical protection devices corresponding to the number of transmission service types in the communication site; The devices are connected to form two transmission links in different directions between the communication sites, so as to protect the business communication between the communication sites. Moreover, since the communication site includes two ROADM devices, when the ROADM device fails, service communication is continued through another ROADM device, thereby realizing the protection of the ROADM device.

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Abstract

本公开实施例提供了一种通信站点、光通信系统、数据传输方法及存储介质；通信站点为第一站点，所述通信站点包括：第一可重构光分插复用ROADM设备，包括：第一端口，能够用于连接网络的第一方向的线缆；第二ROADM设备，与第一ROADM设备连接，且所述第二ROADM设备包括：第二端口，能够用于连接所述网络的第二方向的线缆；所述第二方向不同于所述第一方向；光保护设备，分别与所述第一ROADM设备和第二ROADM设备连接，用于控制所述第一站点通过从第一ROADM设备对应的第一方向传输与第二站点进行对应业务的通信，或者，从第二ROADM设备对应的第二方向传输与所述第二站点进行对应业务的通信。

Description

通信站点、光通信系统、数据传输方法及存储介质 技术领域
本公开涉及光通信技术领域但不限于光通信技术领域，尤其涉及一种通信站点、光通信系统、数据传输方法及存储介质。
相关申请的交叉引用
本申请基于申请号为202010812736.4、申请日为2020年08月13日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
背景技术
可重构光分插复用(Reconfigurable Optical Add-Drop Multiplexer，ROADM)设备是应用于波分复用(Wavelength Division Multiplexing，WDM)光网络系统中的设备，能够根据网络的需要，任意指配上下业务的波长，实现业务的灵活调度。
相关技术中，光网络的光层业务保护方法通常是采用传统光传输网络的1+1光纤线路自动切换保护，但这种方式需要光网络中的每条光纤链路都有备份光纤，而实际的网络中，并非所有的光纤链路都存在备份光纤。并且仅仅保护光纤链路的1+1光纤线路自动切换保护也无法对通信站点内设备的故障进行保护，因此，通过1+1光纤线路自动切换保护的方式无法对光网络的光层业务实现高效的光保护。
发明内容
本公开实施例提出一种通信站点、光通信系统、数据传输方法及存储介质。
本公开实施例提供了一种通信站点，所述通信站点为第一站点，包括：
第一可重构光分插复用ROADM设备，包括：第一端口，所述第一端口，能够用于连接网络的第一方向的线缆；
第二ROADM设备，与所述第一ROADM设备连接，且所述第二ROADM设备包括：第二端口，所述第二端口，能够用于连接所述网络的第二方向的线缆；所述第二方向不同于所述第一方向；
光保护设备，其中，所述光保护设备的数量与所述通信站点传输的业务类型数量一致；
所述光保护设备，分别与所述第一ROADM设备和所述第二ROADM设备连接，用于控制所述第一站点通过从所述第一ROADM设备对应的第一方向传输与第二站点进行对应业务的通信，或者，从所述第二ROADM设备对应的第二方向传输与所述第二站点进行对应业务的通信。
本公开实施例还提供一种光通信系统，包括：
至少两个如前述一个或多个技术方案所述的通信站点；
其中，两个所述通信站点之间，能够从第一方向进行通信或从第二方向进行通信；所述第二方向不同于所述第一方向。
本公开实施例还提供一种数据传输方法，所述方法应用于第一站点，所述方法包括：
在通过从所述第一站点内包含的第一ROADM设备对应的第一方向传输与第二站点进行对应业务的通信时，检测是否出现通信异常；
在检测到通信异常时，将所述通信切换到从所述第一站点包含的第二ROADM设备对应的第二方向传输与第二站点进行对应业务的通信。
本公开实施例还提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机可执行指令；所述计算机可执行指令被处理器执行后，能够实现前述一个或多个技术方案提供的数据传输方法。
本公开实施例提供的通信站点、光通信系统、数据传输方法及存储介质，第一站点内包括第一ROADM设备、第二ROADM设备以及对应不同业务类型的光保护设备。通过第一ROADM设备、第二ROADM设备分别从两个不同方 向与第二站点进行通信；并且第一站点内对应第二站点业务的光保护设备，分别与第一ROADM设备、第二ROADM设备相连。通过光保护设备控制第一站点从第一ROADM设备对应的第一方向与第二站点进行业务通信，或者，从第二ROADM设备对应的第二方向与第二站点进行业务通信。
通过在通信站点内设置对应传输业务类型数量的光保护设备，实现对不同类型的业务进行分组保护；对于相同类型的业务，通过光保护设备分别与第一ROADM设备、第二ROADM设备相连，在通信站点间形成两条不同方向的传输链路，从而对通信站点间的业务通信进行保护。并且，由于通信站点内包括两个ROADM设备，在ROADM设备故障时，通过另一个ROADM设备继续进行业务通信，从而实现对ROADM设备的保护。
附图说明
图1是本公开实施例提供的一种通信站点的组成结构方框示意图；
图2是本公开实施例提供的一种通信站点的一个可选的组成结构方框示意图；
图3是本公开实施例提供的一种通信站点的一个可选的组成结构方框示意图；
图4是本公开实施例提供的一种通信站点的一个可选的组成结构方框示意图；
图5是本公开实施例提供的一种光通信系统的结构示意图；
图6是本公开实施例提供的一种数据传输方法的流程示意图；
图7是本公开实施例提供的另一种数据传输方法的流程示意图；
图8是本公开实施例提供的一种三点环网光通信系统的组成结构示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例中的附图，对发明的具体技术方案做进一步详细描述。以下实施例用于 说明本公开，但不用来限制本公开的范围。
对光层业务的保护方法主要有以下三种：
(1)1+1光纤线路自动切换保护(Optical Fiber Line Auto Switch Protection Equipment，OLP)；这种方法要求每条光纤链路都有备份光纤，但实际应用中，并非所有的光纤链路都存在备份光纤；并且，仅仅保护光纤线路的OLP方法，无法对ROADM设备的故障进行保护；
(2)基于单个波长的光通道层保护(Optical Channel Protection，OCHP)；这种方法需要大量的光开关；
(3)ROADM重构路由；由于ROADM设备的路由配置时间都比较慢，保护倒换时间可能会比较慢。
基于此，本公开实施例提供一种通信站点，如图1所示，图1是本公开实施例提供的一种通信站点的组成结构方框示意图，所述通信站点为第一站点，包括：
第一ROADM设备，包括：第一端口，所述第一端口，能够用于连接网络的第一方向的线缆；
第二ROADM设备，与所述第一ROADM设备连接，且所述第二ROADM设备包括：第二端口，所述第二端口，能够用于连接所述网络的第二方向的线缆；所述第二方向不同于所述第一方向；
光保护设备，其中，光保护设备的数量与通信站点传输的业务类型数量一致；
所述光保护设备，分别与所述第一ROADM设备和所述第二ROADM设备连接，用于控制所述第一站点通过从所述第一ROADM设备对应的第一方向传输与第二站点进行对应业务的通信，或者，从所述第二ROADM设备对应的第二方向传输与所述第二站点进行对应业务的通信。
本公开实施例提供的一种通信站点适用于环网光层业务保护场景中的任一通信站点。
在本公开实施例中，光保护设备是工作在光层的传输设备，例如，OLP设 备。光保护设备具有传输信号独立透明、安全可靠、故障恢复快速的特点。
需要说明的是，所述光保护设备根据工作模型不同，可以分为1+1型光保护设备和1:1型光保护设备。其中，在发射端，1+1型光保护设备将接收到的光信号分束，从连接的两条光纤线路同时传输至网络；在接收端，1+1型光保护设备根据接收到的两路光信号的功率，选择接收一路光信号。而1:1型光保护设备是从连接的两条光纤线路中选择一条光纤线路作为主用线路，将接收到的光信号通过主用线路传输至网络；在接收端，1:1型光保护设备若检测到主用线路的光信号功率下降时，会自动将传输信号路由从主用线路切换至备用线路。同时，发送端的1:1型光保护设备也会同步将线路切换至备用线路上。
在实际应用中，所述第一站点包括多个光保护设备，其中，光保护设备的数量与通信站点传输的业务类型数量一致。
这里，通信站点传输的业务类型可由与之进行通信的站点确定。例如，光保护设备1负责第一站点与第二站点进行通信的业务、光保护设备2负责第一站点与第三站点进行通信的业务等，这里就不具体限定了。
在本公开实施例中，ROADM设备是使用于密集波分复用系统中的器件或设备，用于通过远程的重新配置，可以动态上路或下路业务光信号。
在实际应用中，第一站点内至少包括两个ROADM设备，用于连接所述网络不同方向的线缆，使所述第一站点与所述第二站点之间至少存在两条不同方向的通信线缆。
在一些实施例中，所述第一ROADM设备和第二ROADM设备还用于：当第一ROADM设备故障时，第一站点通过第二ROADM设备对应的第二方向传输与第二站点的业务通信；或者，当第二ROADM设备故障时，第一站点通过第一ROADM设备对应的第一方向传输与第二站点的业务通信。
在本公开实施例中，第一站点包括光保护设备、第一ROADM设备和第二ROADM设备。光保护设备分别与第一ROADM设备、第二ROADM设备相连。并且，第一ROADM设备上的第一端口，通过第一方向的线缆与网络相连；第二ROADM设备上的第二端口，通过第二方向的线缆与网络相连；从而使得第 一站点与第二站点内有两条不同方向的传输通路。第一站点通过光保护设备控制从第一ROADM设备对应的第一方向与第二站点进行业务通信，或者，从第二ROADM设备对应的第二方向与第二站点进行业务通信。
如此，对通信站点的业务按照业务类型不同进行分组保护；对于相同类型的业务，通过两条不同方向的传输链路，对业务通信进行保护。并且，由于通信站点内包括两个ROADM设备，在ROADM设备故障时，通过另一个ROADM设备继续进行业务通信，从而实现对ROADM设备的保护。
在一些实施例中，所述光保护设备还包括收发装置；图2是本公开实施例提供的一种通信站点的一个可选的组成结构方框示意图，如图2所示，其中，收发装置包括：
业务光信号处理模组，用于收发业务光信号；
光开关，包括：与业务光信号处理模组相连的输入端，与第一ROADM设备或第二ROADM设备相连的输出端。
这里，业务光信号是指用于承载有业务数据的光信号。
在本公开实施例中，业务光信号处理模组是用于进行光电和电光转换的光电子器件，例如，根据封装类型不同，业务光信号处理模组可为XFP光模块、SFP光模块等，这里就不具体限定了。
需要说明的是，所述业务光信号处理模组包括光发射装置、光接收装置、升压电路、微处理器(Microcontroller Unit，MCU)。其中，光发送装置用于将电信号转换为光信号，例如激光芯片等；光接收装置用于将光信号转化为电信号，例如雪崩二极管等；升压电路用于为光接收装置提供偏置电压；MCU用于控制升压电路所输出的电压。
在本公开实施例中，光开关是一种具有一个或多个可选的传输端口的光学器件，用于对光传输线路或集成光路中的光信号进行物理切换或逻辑操作。其中，根据光开关的输入、输出端口数量，可将光开关分为1×1光开关、1×2光开关、1×N光开关、2×2光开关、M×N光开关等。这里，M为光开关的输入端口数量，N为输出端口数量。
在实际应用中，可以根据所述第一站点内的ROADM设备的数量确定光开关的输出端口数量，从而选择对应的光开关。
在本公开实施例中，光保护设备还包括收发装置，收发装置包括业务光信号处理模组及光开关。
业务光信号处理模组与光开关的输入端相连，光开关的输出端与第一ROADM设备或者第二ROADM设备相连。
业务光信号处理模组通过光开关接收第一ROADM设备对应的第一方向或第二ROADM设备对应的第二方向传输来的业务光信号，或者，业务光信号处理模组通过光开关向第一ROADM设备对应的第一方向或第二ROADM设备对应的第二方向发送业务光信号。
示例性地，第一站点内包含两个ROADM设备，对应第二站点业务的光保护设备内包含业务光信号处理模组和1×2光开关，1×2光开关的输入端与业务光信号处理模组相连，两个输出端分别与第一站点内的第一ROADM设备、第二ROADM设备相连。
在一些实施例中，光保护设备还包括：分光器，所述分光器输入端与光开关的输出端相连，所述分光器的输出端分别与所述第一ROADM、第二ROADM相连。
在实际应用中，通过分光器将光开关输出的一路业务光信号，分为多路业务光信号，并分别传输至第一ROADM设备和第二ROADM设备，实现光保护设备的双发选收。
如此，通过业务光信号处理模组和光开关实现了通过通信站点间不同方向的通信链路接收或发送业务光信号。
在一些实施例中，如图3所示，图3是本公开实施例提供的一种通信站点的一个可选的组成结构方框示意图；所述第一站点还包括：
光功率检测器，分别连接在所述光保护设备、与所述第一ROADM设备和第二ROADM设备之间，用于检测所述第一方向传输的业务光信号和/或所述第二方向传输的业务光信号；其中，所述光功率检测器检测的结果，用于确定从 所述第一方向传输与所述第二站点的通信或从所述第二方向传输与所述第二站点的通信是否正常；
所述光保护设备，用于在从所述第一方向传输与所述第二站点的通信时，控制所述第一站点从所述第二方向传输与所述第二站点进行对应业务的通信；或者，在从所述第二方向传输与所述第二站点的通信时，控制所述第一站点从所述第一方向传输与所述第二站点进行对应业务的通信。
在本公开实施例中，光功率检测器是指用于测量绝对光功率或通过一段光纤的光功率相对损耗的设备。例如，光功率计、雪崩光电二极管、PIN光电二极管等。光功率检测器可实时检测各输入端口的输入光信号功率，并将各输入端口的光信号功率检测结果反馈给光保护设备，以作为调整通信站点间传输方向的依据。
在实际应用中，通过在光保护设备与第一ROADM设备之间，以及光保护设备与第二ROADM设备之间连接光功率检测器。通过光功率检测器分别检测第一ROADM设备对应的第一方向上传输的业务光信号和第二ROADM设备对应的第二方向上传输的业务光信号的功率。
在本公开实施例中，第一站点内包括光功率检测器，通过在光保护设备与第一ROADM设备之间，以及光保护设备与第二ROADM设备之间连接光功率检测器。
通过光功率检测器检测第一ROADM设备对应的第一方向上传输的业务光信号，和/或，检测第二ROADM设备对应的第二方向上传输的业务光信号。在第一站点通过第一方向传输与第二站点的通信时，根据光功率检测器的检测结果，判断第一站点从第一方向传输与第二站点的通信是否正常。当检测结果表征第一站点从第一方向传输与第二站点的通信出现异常时，第一站点通过光保护设备，切换至从第二方向传输与第二站点的通信。或者，在第一站点通过第二方向传输与第二站点的通信时，根据光功率检测器的检测结果，判断第一站点从第二方向传输与第二站点的通信是否正常。当检测结果表征第一站点从第二方向传输与第二站点的通信出现异常时，第一站点通过光保护设备，切换至 从第一方向传输与第二站点的通信。
如此，通过站点内的光功率检测器测量第一方向和/或第二方向传输的业务光信号的功率，将功率检测结果作为光保护设备切换通信站点之间传输方向的依据。在检测出通信站点间当前通信传输出现异常时，通过光保护设备切换至其他方向继续进行通信站点间的业务通信。
在一些实施例中，所述光保护设备中的分光器的输出端分别与所述第一ROADM设备的输入端和所述第二ROADM设备的输入端连接，所述分光器的输入端与所述业务光信号处理模组的输出端连接；所述第一ROADM设备被配置为传输第一波长的光信号并阻止其他波长的光信号；所述第二ROADM设备被配置为传输第二波长的光信号并阻止其他波长的光信号；
其中，所述第一波长的光信号从第一ROADM设备对应的第一方向与第二站点进行业务通信，所述第二波长的光信号从第二ROADM设备对应的第二方向与第三站点进行业务通信。
在一些实施例中，如图4所示，图4是本公开实施例提供的一种通信站点的一个可选的组成结构方框示意图。
所述第一ROADM设备和所述第二ROADM设备包括灵活栅格光波长选择开关WSS；所述灵活栅格WSS分别与第一站点内的所述光保护设备相连，用于动态调整波长通道间隔，以收发不同波长的业务光信号。
在本公开实施例中，灵活栅格WSS是ROADM设备中的重要光器件，具有任意波长光信号可在任意端口上、下行功能，能够支持更高的调制速率、更多网络通道数以及更高的网络灵活性。例如，基于硅基液晶的WSS、基于液晶单元阵列和双折射楔角片的WSS等。
在本公开实施例中，ROADM设备内的灵活栅格WSS的一端与光保护设备相连，另一端通过线缆连接到网络。通过灵活栅格WSS动态调整波长通道间隔，从而使得任意波长的业务光信号通过灵活栅格WSS的上下路端口，实现光保护设备对不同波长的业务光信号的接收和发送。
需要说明的是，灵活栅格WSS还可以由一个1×N和一个N×1的WSS构成， 其中，1×N的WSS能够将输入端口的波长复用光信号中任意波长组合光信号输出到任意的输出端口上。相反，N×1的WSS能够从任意一个输入端口的光信号中选择任意波长组合光信号与其他输入端口的波长组合光信号合并后输出；从而在灵活栅格WSS的任意上、下行端口上行或下行任意波长的光信号，达到动态调整波长通道间隔，收发不同波长的业务光信号的效果。
在一些实施例中，所述第一ROADM设备和所述第二ROADM设备中包括：两个灵活栅格WSS；所述灵活栅格WSS的输入端与所述光保护设备中的分光器的输出端连接，所述分光器的输入端与所述业务光信号处理模组的输出端连接；所述灵活栅格WSS配置为对接收到的业务光信号进行滤波，得到两路不同带宽的业务光信号。
在实际应用中，所述分光器将所述业务光信号处理模组输出的宽谱光信号，分为两路宽带的光信号；所述灵活栅格WSS分别对接收到的宽带的光信号进行滤波，形成两路不同带宽的多波长光信号；并将两路不同带宽的多波长光信号通过所述第一ROADM设备对应的第一方向或所述第二ROADM设备对应的第二方向分别传输给第二站点和第三站点。
如此，通过灵活栅格WSS既能够动态调整波长通道间隔，实现收发不同波长的业务光信号；又能够实现ROADM设备可重构的特性，其WSS能够在任意的输入、输出端口之间进行倒换，大大提高密集波分复用设备的组网能力。
下面，本公开实施例提供一种光通信系统，如图5所示，图5是本公开实施例提供的一种光通信系统的结构示意图，所述系统包括：
至少两个通信站点；其中，两个通信站点之间，能够从第一方向进行通信或从第二方向进行通信；所述第二方向不同于所述第一方向。
其中，两个通信站点为前述图1至图4中任一项的通信站点；
在本公开实施例中，两个通信站点即第一站点、第二站点均包含光保护设备、第一ROADM设备、第二ROADM设备；并且，光保护设备分别与第一ROADM设备、第二ROADM设备相连。
第一站点分别通过第一ROADM设备对应的第一方向和第二ROADM设备 对应的第二方向与第二站点相连，从而使得两个通信站点间存在两条不同方向的传输通路。并且，第一站点通过对应第二站点业务的光保护设备控制从第一ROADM设备对应的第一方向与第二站点进行业务通信，或者，从第二ROADM设备对应的第二方向与第二站点进行业务通信。
实际实施时，所述光通信系统内的通信站点数量可以根据实际需求进行设定；相应地，通信站点内的光保护设备设置也可以根据光通信系统中的通信站点数量进行设置，使得光保护设备的数量与通信站点传输的业务类型数量一致。并且，所述通信站点内的ROADM设备的数量也可以根据实际需要进行设定，但各通信站点内应至少包括两个ROADM设备，分别对应不同方向的业务光信号传输，使得各通信站点之间至少包括两条不同方向的传输通道进行对应的业务通信。
在一些实施例中，所述光通信系统的网络拓扑结构包括：环状网结构；
所述第一方向为顺时针方向且所述第二方向为逆时针方向；
或者，所述第一方向为逆时针方向且所述第二方向为顺时针方向。
在本公开实施例中，所述环状网结构是指光通信系统中的每个通信站点通过线缆连接，形成一条首尾相连的闭合环形通信线路。环状网中的每个通信站点都有两个相反方向的传输通路，一个方向为顺时针方向，另一个方向为逆时针方向。
如此，通过环状网特性，使得通信站点间存在两个不同方向的业务传输通路，从而对通信站点间的业务通信进行保护。
在另一些实施例中，所述光通信系统的网络拓扑结构包括：网状网结构；
所述第一方向和所述第二方向，对应于相互通信的两个站点之间的不同的光链路。
在本公开实施例中，光通信系统内的每个通信站点都可以通过线缆进行连接；网状网内的每个通信站点至少有两个不同方向的传输链路。
如此，通过网状网特性，使得通信站点存在至少两个不同方向的业务传输通路，从而对通信站点间的业务通信进行保护。
下面，本公开实施例提供一种数据传输方法，如图6所示，图6是本公开实施例提供的一种数据传输方法的流程示意图；所述方法应用于第一站点，包括：
步骤601：在通过从所述第一站点内包含的第一ROADM设备对应的第一方向传输与第二站点进行对应业务的通信时，检测是否出现通信异常；
步骤602：在检测到通信异常时，将所述通信切换到从所述第一站点包含的第二ROADM设备对应的第二方向传输与第二站点进行对应业务的通信。
在本公开实施例中，第一站点被包括光保护设备、第一ROADM设备、第二ROADM设备。光保护设备分别与第一ROADM设备、第二ROADM设备相连；第一站点分别通过第一ROADM设备对应的第一方向和第二ROADM设备对应的第二方向与第二站点相连，从而使得两个通信站点间存在两条不同方向的传输通路。并且，第一站点内还包括光功率检测器，分别连接在光保护设备、与第一ROADM设备和第二ROADM设备之间。
在通过第一ROADM设备对应的第一方向传输与第二站点的业务通信时，使用光功率检测器检测第一ROADM设备对应的第一方向传输的业务光信号的功率。通过光功率检测结果确定从第一方向传输与第二站点的通信是否出现异常；并在检测到通信出现异常时，将通信切换到从第二ROADM设备对应的第二方向传输与第二站点的业务通信。
在一些实施例中，所述步骤601可包括：在通过从所述第一站点内包含的第一ROADM设备对应的第一方向传输与第二站点进行对应业务的通信时，实时检测第一方向传输的业务光信号的功率，并与预设的最低功率阈值进行比对，当第一方向传输的业务光信号功率低于最低功率阈值，确定从第一方向传输与第二站点的通信出现异常。
需要说明的是，最低功率阈值是指保证达到通信站点业务通信所要求的误码比特率的条件下，光接收设备所需要的最小输入光功率。可根据实际需要来进行设置，这里就不具体限制了。
在一些实施例中，步骤602包括：
在检测到通信异常时，所述第一站点内与所述通信的业务对应的光保护设备，将所述通信从第一ROADM设备对应的第一方向切换到从所述第一站点包含的第二ROADM设备对应的第二方向传输与第二站点进行对应业务的通信。
在本公开实施例中，在第一站点和第二站点当前方向的传输通路的光功率检测结果表征当前方向通信异常时，第一站点内的光功率检测器将检测结果反馈给第一站点内与第二站点通信业务对应的光保护设备，所述光保护设备通过光开关将通信从当前的第一ROADM设备对应的第一方向切换至从第二ROADM设备对应的第二方向传输与第二站点的业务通信。
在一些实施例中，如图7所示，图7是本公开实施例提供的另一种数据传输方法的流程示意图；所述方法还包括：
步骤603：根据所述通信的业务，调整所述第一站点内第一ROADM设备或所述第二ROADM设备的灵活栅格WSS，以与所述业务对应波长的业务光信号进行与第二站点通信。
在本公开实施例中，第一ROADM设备和第二ROADM设备内包括灵活栅格WSS，通过灵活栅格WSS动态调整波长通道间隔，从而能够通过灵活栅格WSS上行或下行任意波长的业务光信号。
在示例性实施例中，本公开实施例还提供了一种存储介质，是计算机可读存储介质，例如包括计算机程序的存储器，上述计算机程序可由处理器执行，以完成前述方法所述步骤。计算机可读存储介质可以是磁性随机存取存储器(FRAM，ferromagnetic random access memory)、只读存储器(ROM，Read Only Memory)、可编程只读存储器(PROM，Programmable Read-Only Memory)、可擦除可编程只读存储器(EPROM，Erasable Programmable Read-Only Memory)、电可擦除可编程只读存储器(EEPROM，Electrically Erasable Programmable Read-Only Memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM，Compact Disc Read-Only Memory)等存储器。
本公开实施例通过在通信站点内设置对应传输业务类型数量的光保护设备，实现对不同类型的业务进行分组保护；对于相同类型的业务，通过光保护 设备分别与第一ROADM设备、第二ROADM设备相连，在通信站点间形成两条不同方向的传输链路，从而对通信站点间的业务通信进行保护。并且，由于通信站点内包括两个ROADM设备，在ROADM设备故障时，通过另一个ROADM设备继续进行业务通信，从而实现对ROADM设备的保护。
需要说明的是：“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
另外，本公开实施例所记载的技术方案之间，在不冲突的情况下，可以任意组合。
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。

Claims (11)

  1. 一种通信站点，所述通信站点为第一站点，包括：
    第一可重构光分插复用ROADM设备，包括：第一端口，所述第一端口，能够用于连接网络的第一方向的线缆；
    第二ROADM设备，与所述第一ROADM设备连接，且所述第二ROADM设备包括：第二端口，所述第二端口，能够用于连接所述网络的第二方向的线缆；所述第二方向不同于所述第一方向；
    光保护设备，其中，所述光保护设备的数量与所述通信站点传输的业务类型数量一致；
    所述光保护设备，分别与所述第一ROADM设备和所述第二ROADM设备连接，用于控制所述第一站点通过从所述第一ROADM设备对应的第一方向传输与第二站点进行对应业务的通信，或者，从所述第二ROADM设备对应的第二方向传输与所述第二站点进行对应业务的通信。
  2. 根据权利要求1所述的通信站点，其中，所述光保护设备还包括收发装置，其中，所述收发装置包括：
    业务光信号处理模组，用于收发业务光信号；
    光开关，包括：与业务光信号处理模组相连的输入端，与第一ROADM设备或第二ROADM设备相连的输出端。
  3. 根据权利要求1所述的通信站点，其中，所述第一站点还包括：
    光功率检测器，分别连接在所述光保护设备，与所述第一ROADM设备和第二ROADM设备之间，用于检测所述第一方向传输的业务光信号和/或所述第二方向传输的业务光信号；其中，所述光功率检测器检测的结果，用于确定从所述第一方向传输与所述第二站点的通信或从所述第二方向传输与所述第二站点的通信是否正常；
    所述光保护设备，用于在从所述第一方向传输与所述第二站点的通信时，控制所述第一站点从所述第二方向传输与所述第二站点进行对应业务的通信； 或者，在从所述第二方向传输与所述第二站点的通信时，控制所述第一站点从所述第一方向传输与所述第二站点进行对应业务的通信。
  4. 根据权利要求1所述的通信站点，其中，所述第一ROADM设备和所述第二ROADM设备包括灵活栅格光波长选择开关WSS；
    所述灵活栅格WSS分别与第一站点内的所述光保护设备相连，用于动态调整波长通道间隔，以收发不同波长的业务光信号。
  5. 一种光通信系统，包括：
    至少两个如权利要求1至4任一项所述的通信站点；
    其中，两个所述通信站点之间，能够从第一方向进行通信或从第二方向进行通信；所述第二方向不同于所述第一方向。
  6. 根据权利要求5所述的系统，其中，所述光通信系统的网络拓扑结构包括：环状网结构；
    所述第一方向为顺时针方向且所述第二方向为逆时针方向；
    或者，所述第一方向为逆时针方向且所述第二方向为顺时针方向。
  7. 根据权利要求5所述的系统，其中，所述光通信系统的网络拓扑包括：网状网结构；
    所述第一方向和所述第二方向，对应于相互通信的两个站点之间的不同的光链路。
  8. 一种数据传输方法，所述方法应用于第一站点，所述方法包括：
    在通过从所述第一站点内包含的第一ROADM设备对应的第一方向传输与第二站点进行对应业务的通信时，检测是否出现通信异常；
    在检测到通信异常时，将所述通信切换到从所述第一站点包含的第二ROADM设备对应的第二方向传输与第二站点进行对应业务的通信。
  9. 根据权利要求8所述的方法，其中，所述在检测到通信异常时，将所述通信切换到从所述第一站点包含的第二ROADM设备对应的第二方向传输与第二站点进行对应业务的通信，包括：
    在检测到通信异常时，所述第一站点内与所述通信的业务对应的光保护设 备，将所述通信从第一ROADM设备对应的第一方向切换到从所述第一站点包含的第二ROADM设备对应的第二方向传输与第二站点进行对应业务的通信。
  10. 根据权利要求8所述的方法，其中，所述方法还包括：
    根据所述通信的业务，调整所述第一站点内第一ROADM设备或所述第二ROADM设备的灵活栅格光波长选择开关WSS，以与所述业务对应波长的业务光信号进行与第二站点的通信。
  11. 一种计算机可读存储介质，所述计算机可读存储介质存储有计算机可执行指令；所述计算机可执行指令被处理器执行后，能够实现如权利要求8至10任一项所述的数据传输方法。
PCT/CN2020/138425 2020-08-13 2020-12-22 通信站点、光通信系统、数据传输方法及存储介质 Ceased WO2022032961A1 (zh)

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