Switching control apparatus and method, network node, and computer-readable storage medium

Abstract

Embodiments of the present application relate to the technical field of optical communications, and disclose a switching control apparatus and method, a network node, and a computer-readable storage medium. The switching control apparatus comprises: a dummy light input port, a signal light input port, a switching module, and a control module. The signal light input port is internally provided with an optical channel monitoring unit; an input end of the dummy light input port is configured to access dummy light, an input end of the signal light input port is configured to access signal light, the switching module is respectively connected to an output end of the dummy light input port and an output end of the signal light input port, and the control module is respectively connected to the optical channel monitoring unit and the switching module; and the control module is configured to acquire a monitoring result from the optical channel monitoring unit and control, on the basis of the monitoring result, the switching module to switch an input optical channel.

Description

Switching control apparatus, method, network site, and computer-readable storage medium

[0001] Cross-reference

[0002] This application claims priority to the Chinese patent application No. 2024108546421, filed on June 28, 2024, and entitled "Switching control apparatus, method, network site, and computer-readable storage medium", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] Embodiments of the present application relate to the field of optical communication technology, in particular to a switching control apparatus, method, network site, and computer-readable storage medium. BACKGROUND

[0004] In order to solve the power transfer problem caused by SRS (Stimulated Raman scattering) effect in the fiber in the channel expansion system, the related technology generally uses the method of filling dummy light (abbreviation: DL, referred to as filling wave).

[0005] However, in the switching process of the filling wave and the signal wave, the wave may be lost due to various reasons. In order to ensure the stable optical performance of the system after the wave is lost, the related technology needs to adjust multiple devices in the wavelength division network site during the switching process, which involves feedback control and multi-device interaction. Therefore, this control method is relatively complex and time-consuming, and affects the efficiency of business operation. SUMMARY

[0006] The main purpose of the embodiments of the present application is to provide a switching control apparatus, method, network site, and computer-readable storage medium, which aims to at least solve the technical problem that the switching control method of the filling wave and the signal wave in the related technology is too complex.

[0007] To achieve the above-mentioned purpose, the embodiments of the present application provide a switching control apparatus, which comprises a filling wave input port, a signal wave input port, a switching module and a control module, wherein an optical channel monitoring unit is arranged in the signal wave input port; an input end of the filling wave input port is used to access the filling wave, an input end of the signal wave input port is used to access the signal wave, the switching module is connected to the output end of the filling wave input port and the output end of the signal wave input port respectively, and the control module is connected to the optical channel monitoring unit and the switching module respectively; the control module is used to obtain the monitoring result of the optical channel monitoring unit, and control the switching module to switch the input channel according to the monitoring result.

[0008] In addition, to achieve the above object, the embodiment of the present application further provides a network site, which comprises an upstream optical amplifier, a switching device, a downstream optical amplifier and the switching control device as described above, the upstream optical amplifier, the switching device and the downstream optical amplifier are sequentially connected to form a signal path, and the switching control device is arranged on the signal path.

[0009] In addition, to achieve the above object, the embodiment of the present application further provides a switching control method, which is applied to the switching control device as described above, and comprises the following steps: monitoring a signal wave input port by an optical channel monitoring unit to obtain a monitoring result; and controlling a switching module to switch an input wave channel according to the monitoring result by a control module.

[0010] In addition, to achieve the above object, the embodiment of the present application further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the switching control method as described above. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description only constitute a part of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0012] Fig. 1 is a signal contrast schematic diagram of power transfer problem caused by SRS effect in optical fiber in a wave channel expansion system;

[0013] Fig. 2 is a schematic diagram of a site structure loaded with a filling wave in the related art;

[0014] Fig. 3 is a schematic diagram of the structure of a switching control device provided by the embodiment of the present application;

[0015] Fig. 4 is a schematic diagram of the structure of one application example of a switching control device provided by the embodiment of the present application;

[0016] Fig. 5 is a schematic diagram of another application example of a switching control device provided by the embodiment of the present application;

[0017] Fig. 6 is a schematic diagram of the structure of a network site provided by the embodiment of the present application;

[0018] Fig. 7 is a schematic diagram of one application scenario of a network site provided by the embodiment of the present application;

[0019] Fig. 8 is a schematic diagram of another application scenario of a network site provided by the embodiment of the present application;

[0020] Fig. 9 is a flow diagram of a switching control method according to an embodiment of the present application.

[0021] BRIEF DESCRIPTION OF DRAWINGS 100, a fill wave input port; 200, a signal wave input port; 201, an optical channel monitoring unit; 300, a switching module; 400, a control module; 10, an upstream optical amplifier; 20, a switching device; 30, a downstream optical amplifier; 40, a switching control apparatus. DETAILED DESCRIPTION

[0022] In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular architectures, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known methods, devices, and circuits are omitted so as not to obscure the description of the present application with unnecessary detail.

[0023] It is noted that, although a logical order is shown in the flowchart, in some cases, the steps shown or described can be performed in an order different from that shown in the flowchart. The terms "first", "second", and the like in the description and in the claims, as well as above-described drawings, are used for distinguishing between similar objects and not necessarily for describing a specific sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of use in either order.

[0024] It is also to be understood that the phraseology "one embodiment" or "the embodiment" as used herein does not necessarily refer to the same embodiment, although it can. The terms "a" or "an", as used herein, mean "one or more", unless otherwise explicitly provided. The term "plurality" as used herein, means "two or more", unless otherwise explicitly provided. The term "another" as used herein, means "one or more", unless otherwise explicitly provided. The term "additional" as used herein, means "one or more", unless otherwise explicitly provided.

[0025] With the rapid development of communication technology, the traditional C-band based DWDM(Dense Wavelength Division Multiplexing) technology has been unable to meet the growth demand of network traffic. In order to improve the single fiber transmission capacity, the available transmission bandwidth is further expanded by the waveband expansion technology in the DWDM system, and the number of multiplexed channels in the optical fiber is increased. The current long-distance optical transmission system has been improved from the traditional 4THz bandwidth C-band to 6THz, and with the coming of the 400G waveband long-distance transmission era, it is necessary to further expand to the L-band to form a C+L system, and in the future it will even expand to the S, U and other wavebands. In the channel expansion system, such as the C+L waveband, a wider frequency spectrum is occupied, and there is a strong SRS effect, which causes a very significant transfer of optical power from short wavelength to long wavelength (i.e. power transfer from C waveband to L waveband), as shown in FIG. 1. And the SRS transfer has a cumulative effect, after experiencing multiple cross-section transmissions, the power transfer at the short wavelength is obvious, which causes the optical power and the OSNR(Optical Signal Noise Ratio) unevenness at the receiving end to be difficult to meet the demand of system application. Therefore, the power transfer problem caused by the SRS(Stimulated Raman scattering) effect in the channel expansion system cannot be ignored.

[0026] To solve the above problems, the related technology generally uses the way of filling false waves, in addition to the wavelength carrying signals, all other wavelengths not carrying signals are opened, and the system is always kept in full configuration, so as to suppress the stimulated Raman scattering effect and gain competition caused by adding and subtracting signal waves. A kind of filling wave loading mode is shown in Figure 2, by loading filling waves at the entrance and exit of the site, to ensure that the system is always in full wave configuration. However, when the dynamic establishment, deletion, rerouting and other operations of the service signal wave are performed, the switching of the WSS (Wavelength Selective Switch) device will be brought, and in the process of switching, the optical link system may be dropped for a few seconds, which is called active wave cutting. In addition, when a sudden fault occurs in the system, such as fiber breakage, optical amplifier failure and the like, part or all of the wavelengths will be blocked, causing the wave to drop, which is called passive wave drop. Due to the separation characteristics of optical devices, the WSS performs channel switching, the OPM (Optical Performance Monitoring) monitors the single wave power, and the OP (Optical Protect) controls the signal switching. For the above active wave cutting and passive wave drop, the control of the related technology is fed back from the back to the front, and the multi-device interaction, feedback control often needs to be relatively complex coordination between these separate single boards or components, or simply control the number of service actions or wave cutting spectrum width, but it will affect the efficiency of service action. For example, in the site shown in Figure 2, when the active wave cutting is performed, the WSS close to the OBA (Optical Booster Amplifier) needs to be controlled to switch the signal wave and the filling wave, and then the WSS close to the OPA (Optical Pre-Amplifier) needs to be controlled to switch, and the OPM does not need to be concerned, but in the switching, the wavelength spectrum needs to be controlled, such as switching 10 waves at the same time, which can be completed by switching 3 times, or for each 150Ghz channel, the switching is divided into 3 times, and only 50Ghz is switched at a time. These control methods are relatively complex, and the maximum group number or maximum slice spectrum all need to be verified by a large number of laboratories, and also depend on; when the passive wave drop occurs, first, it is needed to distinguish which wave channel information scanned by the OPM is the filling wave and which is the service signal wave, according to the OPM scanning of the OBA, it is found that the service signal wave disappears, then the WSS behind it is switched to the filling wave in reverse, but the monitoring speed of the OPM and the switching time of the WSS are both above seconds, which affects the system for a long time.

[0027] In addition, a general optical signal will pass through multiple-stage erbium-doped amplifiers for amplification. Since the metastable state duration of erbium ions is in the order of milliseconds, the switching of the signal wave and the filler wave can be controlled in the order of milliseconds, and the influence on the system is small. However, the monitoring and switching capabilities of the devices used in the related art cannot meet the requirements. The monitoring single-wave efficiency of the OPM is poor, and can only be in the order of seconds, which cannot meet the requirement of fast switching of the signal wave and the filler wave without affecting the service. The optical layer OAM (Operation Administration and Maintenance) technology based on the top adjustment mode in the related art (since it has the property of loading a label on the optical channel, it is simply referred to as an optical label below) can superimpose additional low-frequency information on the signal wavelength. The low-frequency information contains optical layer OAM channel identification information and other optical layer OAM messages, and can be quickly extracted in a low-cost direct detection manner at any detection point on the optical path, and can achieve millisecond-level monitoring single-wave capability. However, there is currently no combination with the C+L system to control the switching of the filler wave and the signal wave. The switching time of the optical path selection unit WSS used in the related art is generally in the order of seconds, and there is a trend of further evolution to improve the switching time to the order of milliseconds in the future. The OPM device or the MCS device based on the optical switch mode and the MEMS (Micro-Electro-Mechanical System) can all achieve a level below milliseconds, but these devices currently do not have integrated signal wave monitoring capability, and are basically not involved in the switching design of the filler wave and the signal wave.

[0028] Based on this, the embodiment of the present application provides a switching control device, method, network site and computer readable storage medium, the switching control device comprises: a filler wave input port, a signal wave input port, a switching module and a control module, wherein the signal wave input port is provided with an optical channel monitoring unit; the input end of the filler wave input port is used for accessing the filler wave, the input end of the signal wave input port is used for accessing the signal wave, the switching module is connected with the output end of the filler wave input port and the output end of the signal wave input port respectively, and the control module is connected with the optical channel monitoring unit and the switching module respectively; the control module is used for acquiring the monitoring result of the optical channel monitoring unit, and controlling the switching module to switch the input wave channel according to the monitoring result. The embodiment of the present application proposes an integrated switching control device, which can quickly monitor the signal wave and automatically switch the filler wave and the signal wave based on the signal wave, thereby simplifying the network control under the premise of ensuring the stability of the optical system. In some embodiments, two types of special access ports are specially configured for the filler wave and the signal wave in the switching control device, and the signal wave access port has monitoring capability. The switching module is integrated in the switching control device, and the control module is further configured to control the wave channel switching logic of the switching module based on the monitoring result of the signal wave access port, thereby realizing signal wave monitoring and wave channel switching on one device, without adjusting multiple devices, simplifying the switching control mode of the filler wave and the signal wave, and reducing the influence on the service action efficiency.

[0029] The switching control device, method, network site and computer readable storage medium provided by the embodiment of the present application are described as follows. First, the switching control device in the embodiment of the present application is described.

[0030] Referring to FIG. 3, FIG. 3 is a structural schematic diagram of a switching control device provided by the embodiment of the present application. As shown in FIG. 3, in the embodiment, the switching control device comprises: a filler wave input port 100, a signal wave input port 200, a switching module 300 and a control module 400, wherein the signal wave input port 200 is provided with an optical channel monitoring unit 201; the input end of the filler wave input port 100 is used for accessing the filler wave, the input end of the signal wave input port 200 is used for accessing the signal wave, the switching module 300 is connected with the output end of the filler wave input port 100 and the output end of the signal wave input port 200 respectively, and the control module 400 is connected with the optical channel monitoring unit 201 and the switching module 300 respectively; the control module 400 is used for acquiring the monitoring result of the optical channel monitoring unit 201, and controlling the switching module 300 to switch the input wave channel according to the monitoring result.

[0031] In the embodiment, the filled wave input port 100 and the signal wave input port 200 are two types of special input ports separated from each other, each type of port can have multiple or only one, and each input port can access multiple wavelengths of the same type, and the filled wave can be generated by a noise light source to generate a wide spectrum of wavelengths.

[0032] In the embodiment, the optical channel monitoring unit 201 in the signal wave input port 200 can use the optical layer OAM technology with millisecond-level monitoring capability to monitor the signal wave, or use other similar signal wave monitoring technology, as long as it can accurately monitor the signal wave and distinguish it from the filled wave. The embodiment does not limit this.

[0033] As an example, the optical channel monitoring unit 201 can judge whether the signal wave exists according to the power or any parameter value that can monitor the wavelength, and the embodiment does not limit this.

[0034] In the embodiment, the switching module 300 can include two inputs and one output, and the two inputs can be connected to the filled wave input port 100 and the signal wave input port 200 through optical fibers, forming two input wave channels, namely the filled wave input wave channel and the signal wave input wave channel. In the case that the filled wave input wave channel is in communication with the output end of the switching module 300, the switching control device is used to output the filled wave; in the case that the signal wave input wave channel is in communication with the output end of the switching module 300, the switching control device is used to output the signal wave.

[0035] As an example, the switching module 300 can use an MCS (Multicast Switch, Multicast Switch) device, a WSS device, or other switch devices with similar functions, and the embodiment does not limit this.

[0036] In the embodiment, the control module 400 is in communication connection with the optical channel monitoring unit 201 and the switching module 300. The control module 400 can receive the monitoring result from the optical channel monitoring unit 201, and know whether the signal wave input port 200 has a signal wave according to the monitoring result, so as to send a switching control signal to the switching module 300, so that the switching module 300 selects one of the two input wave channels to be in communication with the output end.

[0037] As an example, the control module 400 can be realized by software or logic hardware such as FPGA or other logic hardware with similar functions, as long as it can ensure high execution efficiency, and the embodiment does not limit this.

[0038] The embodiment provides an integrated switching control device, which can quickly monitor signal waves and perform autonomous switching of the signal waves and filler waves based on the signal waves, simplifies network control under the premise of guaranteeing stability of an optical system. In some embodiments, two types of special access ports are specially configured for the signal waves and the filler waves in the switching control device, the signal wave access port has a monitoring capability, the switching module is integrated in the switching control device, and a control module is further configured to control wave channel switching logic of the switching module based on a monitoring result of the signal wave access port, so that signal wave monitoring and wave channel switching are realized on one device, adjustment of multiple devices is not involved, a switching control mode of the signal waves and the filler waves is simplified, and influence on service operation efficiency is reduced.

[0039] The switching control device provided by the embodiment can be applied in a wave channel expansion system, in particular, in deployment of a corresponding product of a C+L system, and can not change original networking or have small changes; the switching control device can also be applied in an online operation and maintenance stage of a wavelength division network, and has no special requirements on operation and maintenance personnel, and the operation and application simplicity of the operation and maintenance personnel is improved; by loading the switching control device, quick switching of the signal waves and the filler waves can be realized, meanwhile, system optical performance is stable after wave drop, control flow is simplified, control complexity is reduced, and there is no need to change existing equipment, response speed is fast, and network maintenance efficiency is greatly improved.

[0040] In some feasible embodiments, the control module 400 is configured to control the switching module 300 to switch the input wave channel to access the signal wave when the monitoring result indicates that the signal wave exists.

[0041] In some feasible embodiments, the control module 400 is configured to control the switching module 300 to switch the input wave channel to access the filler wave when the monitoring result indicates that the signal wave does not exist.

[0042] As an example, the control method of the control module 400 can at least include the following cases: in an initial case, no service signal wave is generated, the control module 400 controls the switching module 300 to switch the input wave channel to access the filler wave, and at this time, the switching control device outputs the filler wave; when the signal wave is loaded, the optical channel monitoring unit 201 monitors that the signal wave exists, and then the control module 400 controls the switching module 300 to switch the input wave channel from the filler wave to the signal wave; during signal transmission, when the optical channel monitoring unit 201 monitors that the signal wave does not exist, the control module 400 controls the switching module 300 to switch the input wave channel from the signal wave to the filler wave.

[0043] In some feasible embodiments, the signal wave input port 200 is configured to access a single wave, and the filler wave input port 100 is configured to access a filler wave corresponding to the single wave.

[0044] In the embodiment, the signal wave input port 200 can be a single wave single port, and at this time, the filling wave input port 100 is also a single wave single port corresponding to the signal wave input port 200.

[0045] In some feasible embodiments, the signal wave input port 200 is used for accessing the multiplexing of the plurality of service signal lights, and the filling wave input port 100 is used for accessing the plurality of filling waves corresponding to the multiplexing.

[0046] In the embodiment, the signal wave input port 200 can be a composite port capable of accessing the multiplexing input of the plurality of service signal lights, and at this time, the filling wave input port 100 can also be a composite port used for accessing the plurality of filling waves corresponding to the multiplexing.

[0047] As an example, the switching control device provided by the above embodiment can be switched in the manner of optical label monitoring combined with the MCS switch mode, as shown in FIG. 4.

[0048] In the embodiment, the conventional MCS is modified, the filling wave input port and the signal wave input port are distinguished at the input port thereof, and the optical layer OAM monitoring capability is integrated at the signal wave input port. The filling wave is input into the device according to the fixed spectral width single wave, which can be realized by using the wide spectrum laser noise through the fixed wavelength splitting plate or using the WSS splitting, and the embodiment does not limit this. For example, the C6T+L6T system can be split into 80 wave inputs according to the 150Ghz spectral width. In order to guarantee the attenuation adjustable or amplifier device required by the power and other performance factors, the port can be increased according to the requirement.

[0049] The signal wave can be the multiplexing input of the plurality of service signal lights or the single wave single port, which is not limited by the application. The signal wave input port has the optical label monitoring capability, and the control mode can be: (1) the signal wave is input into the output switch which is always opened; (2) when it is monitored that the optical label of a single wave optical channel on the signal wave input port reflects the signal loss, the switch of the corresponding filling wave input port is opened, so that the corresponding filling wave is allowed to output; (3) when it is monitored that the optical label of a single wave optical channel on the signal wave input port reflects the signal, the switch of the corresponding filling wave input port is closed, so that the corresponding filling wave is prohibited to output.

[0050] It should be noted that when the service signal adopts the flexible grid, the service signal wave is switched to the filling wave only when the drop spectral width of the service signal is greater than the spectral width of the filling wave, for example, when the service signal wave adopts 50Ghz, one filling wave is switched when three service signal waves are dropped in succession.

[0051] The above optical label monitoring single wave service signal and the multi-channel optical switch can reach the millisecond level, so that the lossless switching of the filling wave and the signal wave can be realized, and the control is very simple.

[0052] As an example, the switching control device provided by the above embodiment can be used for switching in a manner of combining a WSS switch and a tag monitoring, as shown in FIG. 5.

[0053] In the embodiment, the filled wave input port and the signal wave input port can access multiple wavelengths or multiple ports, the filled wave can be a wide spectrum signal generated by a noise laser, and the control manner can be: (1) initially, the WSS device selects all filled waves to output; (2) when it is monitored that a signal appears on a single wave optical channel tag of the signal wave input port, the WSS blocks the wavelength corresponding to the filled wave and selects the wavelength of the signal wave to output; (3) when it is monitored that a signal loss occurs on a single wave optical channel tag of the signal wave input port, the WSS blocks the wavelength corresponding to the signal wave and selects the wavelength of the filled wave to output.

[0054] The single wave service signal monitored by the tag can reach a millisecond level, the WSS switching is at a second level, which will affect the system to some extent, but the control is very simple. With the development of technology, when the WSS switching is improved to a millisecond level, the lossless switching of the filled wave and the signal wave can be achieved.

[0055] In addition, the embodiment of the present application further provides a network site. Referring to FIG. 6, FIG. 6 is a structural schematic diagram of a network site provided by the embodiment of the present application. The network site comprises an upstream optical amplifier 10, a switch device 20, a downstream optical amplifier 30 and the switching control device 40 provided by the above embodiment. The upstream optical amplifier 10, the switch device 20 and the downstream optical amplifier 30 are sequentially connected to form a signal path, and the switching control device 40 is arranged on the signal path.

[0056] In the embodiment, the upstream optical amplifier 10, the switch device 20 and the downstream optical amplifier 30 sequentially connected to form a signal path are the original basic configuration in a common network site. The switching control device 40 provided by the above embodiment can be flexibly arranged at positions A, B, C and D in the signal path without changing the original basic configuration.

[0057] As an example, the upstream optical amplifier 10 can be an OPA (Optical Pre-Amplifier, optical pre-amplifier), the downstream optical amplifier 30 can be an OBA (Optical Booster Amplifier, optical power amplifier), and the switch device 20 can be a WSS device. The selection of each part can also be determined according to the actual situation, and the embodiment does not limit this.

[0058] Those skilled in the art can understand that the structure shown in FIG. 6 does not constitute a limitation on the network site, and can include more or fewer components than shown, or combine certain components, or different component arrangements.

[0059] The network site proposed in the embodiment belongs to the same technical concept as the switching control device proposed in the above embodiment, and the technical details not described in detail in the embodiment can be referred to any of the above embodiments, and the embodiment has the same beneficial effects as the switching control device in each of the above embodiments.

[0060] In some possible embodiments, the switching control device 40 is arranged in at least one of the following manners: the switching control device 40, the upstream optical amplifier 10, the switching device 20, and the downstream optical amplifier 30 are connected in sequence; and the upstream optical amplifier 10, the switching device 20, the downstream optical amplifier 30, and the switching control device 40 are connected in sequence.

[0061] In the embodiment, the switching control device 40 for accessing the filler wave and the signal wave can be arranged at the input end A of the upstream optical amplifier 10, or arranged at the output end D of the downstream optical amplifier 30, or arranged at both of the above-mentioned positions A and D. In the above-mentioned cases, the original optical path configuration in the site can be completely unchanged, but in the case that the inlet filler wave is amplified by the upstream optical amplifier 10, the outlet filler wave also needs to be amplified by itself to ensure the flatness of the output power of the optical link.

[0062] As an example, referring to FIG. 7, in the case that the upstream optical amplifier 10 is an OPA, the switching device 20 includes two WSS devices, and the downstream optical amplifier 30 is an OBA, FIG. 7 corresponds to the application scenario of arranging the switching control device 40 for accessing the filler wave and the signal wave at both of the above-mentioned positions A and D.

[0063] In some possible embodiments, the switching control device 40 is arranged in at least one of the following manners: the upstream optical amplifier 10, the switching control device 40, the switching device 20, and the downstream optical amplifier 30 are connected in sequence; and the upstream optical amplifier 10, the switching device 20, the switching control device 40, and the downstream optical amplifier 30 are connected in sequence.

[0064] In the embodiment, the switching control device 40 for accessing the filler wave and the signal wave can be arranged at the output end B of the upstream optical amplifier 10, or arranged at the input end C of the downstream optical amplifier 30, or arranged at both of the above-mentioned positions B and C. In the above-mentioned cases, the optical fibers between the upstream optical amplifier 10 and the switching device 20, and between the switching device 20 and the downstream optical amplifier 30 need to be simply reconnected, which has no influence on the original site deployment, and the inlet filler wave is not amplified, and the outlet filler wave is uniformly amplified.

[0065] As an example, referring to FIG. 8, in the case where the upstream optical amplifier 10 is an OPA, the switching device 20 includes two WSS devices, and the downstream optical amplifier 30 is an OBA, FIG. 8 corresponds to the application scenario of the switching control device 40 provided at both the above two positions B and C to switch the access of the signal wave and the filler wave.

[0066] As can be seen from the above embodiment, the network site provided in the embodiment adds the switching control device, but does not change the original site, and even does not change the original optical path configuration, thereby ensuring the compatibility of the original system. Compared with the scheme in the related art that needs to greatly transform the original site and the optical path configuration, the embodiment has the advantage of easy improvement.

[0067] In addition, the embodiment of the present application further provides a switching control method. Referring to FIG. 9, FIG. 9 is a flowchart of a switching control method provided by the embodiment of the present application. The switching control method can be applied to the switching control device provided in the above embodiment. As shown in FIG. 9, the switching control method provided by the embodiment includes steps S10 and S20.

[0068] In step S10, the signal wave input port is monitored by the optical channel monitoring unit to obtain a monitoring result.

[0069] In the embodiment, the switching control device monitors whether there is a signal wave in the signal wave input port through the optical channel monitoring unit. The monitoring result can be that there is a signal wave or that there is no signal wave.

[0070] In step S20, the control module controls the switching module to switch the input channel according to the monitoring result.

[0071] In the embodiment, the switching control device receives the monitoring result from the optical channel monitoring unit through the control module, so as to know whether there is a signal wave in the signal wave input port. In the case where the monitoring result is that there is a signal wave in the signal wave input port, the switching control device controls the switching module to switch the input channel to the connected signal wave input port through the control module, so as to transmit the signal wave. In the case where the monitoring result is that there is no signal wave in the signal wave input port, the switching control device controls the switching module to switch the input channel to the connected filler wave input port through the control module, so as to transmit the filler wave.

[0072] The switching control method provided by the embodiment belongs to the same technical concept as the switching control device provided by the above embodiment. The technical details not described in the embodiment can be referred to any of the above embodiments, and the embodiment has the same beneficial effects as the above switching control device.

[0073] In addition, the embodiment of the present application further provides a computer readable storage medium, which can be a nonvolatile computer readable storage medium, and the computer readable storage medium stores a computer program. The computer program is executed by a processor to implement the switching control method provided by any of the above embodiments.

[0074] Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above can be embodied in software, firmware, hardware, or any suitable combination thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on computer readable media, which can include computer storage media (or non-transitory media), and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules, or other data. Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage, or other magnetic storage devices, or any other medium that can be used to store the desired information and that can be accessed by a computer. Further, it should be appreciated by those of ordinary skill in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and includes any information delivery media. In this description, numerous specific details have been set forth to provide a thorough understanding of the methods and mechanisms illustrated herein. However, it will be understood by those skilled in the art that the present application can be practiced without the specific details. In other instances, well-known methods, procedures, components, and circuits have not been described in detail so as not to obscure aspects of the present application.

[0075] The above is a specific description of some embodiments of the present application, but the embodiments of the present application are not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the embodiments of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the embodiments of the present application.

Claims

1. A switching control device, the switching control device comprising: The system includes a filler wave input port, a signal wave input port, a switching module, and a control module, wherein the signal wave input port is equipped with an optical channel monitoring unit. The input terminal of the filling wave input port is used to receive the filling wave, the input terminal of the signal wave input port is used to receive the signal wave, the switching module is connected to the output terminal of the filling wave input port and the output terminal of the signal wave input port respectively, and the control module is connected to the optical channel monitoring unit and the switching module respectively. The control module is used to acquire the monitoring results of the optical channel monitoring unit and control the switching module to switch the input channel according to the monitoring results.

2. The switching control device as described in claim 1, wherein, The control module is used to control the switching module to switch the input channel to receive the signal wave when the monitoring result indicates that the signal wave is present.

3. The switching control device as described in claim 1, wherein, The control module is used to control the switching module to switch the input channel to the filling wave when the monitoring result indicates that the signal wave does not exist.

4. The switching control device as described in claim 1, wherein, The signal wave input port is used to receive a single wave, and the filling wave input port is used to receive a filling wave corresponding to the single wave.

5. The switching control device as described in claim 1, wherein, The signal wave input port is used to receive multiple combined wave signals of multiple service signals, and the fill wave input port is used to receive multiple fill waves corresponding to the combined wave signal.

6. A network site, the network site comprising an upstream optical amplifier, a switching device, a downstream optical amplifier, and a switching control device as described in any one of claims 1 to 5, wherein the upstream optical amplifier, the switching device, and the downstream optical amplifier are sequentially connected to form a signal path, and the switching control device is disposed on the signal path.

7. The website as described in claim 6, wherein, The switching control device can be configured in at least one of the following ways: The switching control device, the upstream optical amplifier, the switching device, and the downstream optical amplifier are connected in sequence; The upstream optical amplifier, the switching device, the downstream optical amplifier, and the switching control device are connected in sequence.

8. The website as described in claim 6, wherein, The switching control device can be configured in at least one of the following ways: The upstream optical amplifier, the switching control device, the switching device, and the downstream optical amplifier are connected in sequence; The upstream optical amplifier, the switching device, the switching control device, and the downstream optical amplifier are connected in sequence.

9. A switching control method, wherein the switching control method is applied to a switching control device as described in any one of claims 1 to 5, comprising: The signal wave input port is monitored by the optical channel monitoring unit to obtain the monitoring results; The control module controls the switching module to switch the input channel based on the monitoring results.

10. A computer-readable storage medium having a computer program stored thereon, the computer program implementing the switching control method as described in claim 9 when executed by a processor.

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