An optical backboard switching method, device, equipment and readable storage medium

Abstract

The application discloses an optical backboard switching method and device, equipment and a readable storage medium, and relates to the technical field of communication, so as to reduce the influence on services. The method comprises the following steps: acquiring a signal of a wavelength switch selector; determining whether the optical backboard needs to be switched according to the signal of the wavelength switch selector; when it is determined that the optical backboard needs to be switched according to the signal of the wavelength switch selector, generating a switching signal, and controlling Q optical switch arrays to switch the optical backboard by using the switching signal. The embodiment of the application can reduce the influence on services.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an optical backplane switching method, apparatus, device and readable storage medium. Background Technology

[0002] With the rapid growth of network traffic, traditional static configuration of optical switches cannot dynamically adjust optical paths, requiring manual intervention, resulting in high maintenance costs and hindering rapid service activation. Dynamically configurable OXC (optical cross-connect) technology has become the next-generation evolution direction, offering greater cross-connect capacity, more optical directions, easier operation and maintenance, and lower latency performance.

[0003] In recent years, second-generation all-optical cross-connect equipment based on optical backplane technology has been able to provide more dimensions and greater capacity. Through the all-optical backplane structure, the fiber connection between multiple WSS (Wavelength Selective Switch) boards is transformed into a direct interface between the board and the backplane. This not only significantly reduces the number of fiber connections, but also reduces operational errors and maintenance workload.

[0004] The architecture of the backplane is as follows Figure 1 As shown, an optical backplane is a technology for achieving high-density fiber optic interconnects on a backplane. Its key feature is that the fiber optic cabling (ribbon fiber) is encapsulated within a flexible substrate, enabling fiber optic interconnection between various modules on the backplane and between the backplane itself, thus achieving management of the high-density fiber optic interconnects. The optical backplane supports mesh interconnection between optical lines and optical branches, supports plug-and-play functionality for optical lines and optical branches, and supports flexible expansion of optical lines and optical branches without the need for fiber optic connections.

[0005] OXC-based transmission networks can achieve high-bandwidth scheduling at the optical layer and have implemented protection in the line direction. However, if the optical backplane, which plays a role in connecting equipment in OXC, fails and needs to be replaced, the service of the entire OXC equipment will be interrupted, which will cause significant losses. Summary of the Invention

[0006] This application provides a method, apparatus, device, and readable storage medium for optical backplane switching to reduce the impact on services.

[0007] In a first aspect, embodiments of this application provide an optical backplane switching device, comprising:

[0008] There are Q optical switch arrays, where each optical switch array includes N 1×M optical switches. The common port of the N 1×M optical switches forms a common optical interface with N fiber cores; the first port of the N 1×M optical switches forms a first optical interface with N fiber cores; the second port of the N 1×M optical switches forms a second optical interface with N fiber cores; and so on, the Mth port of the N 1×M optical switches forms the Mth optical interface with N fiber cores.

[0009] Wherein, for the i-th optical switch array, the common optical interface of the i-th optical switch array is connected to the i-th optical interface of the electrical backplane or to the first optical interface of the i-th wavelength switch selector. The first optical interface is connected to the i-th optical interface of the first optical backplane, the second optical interface is connected to the i-th optical interface of the second optical backplane, and so on, with the M-th optical interface connected to the i-th optical interface of the M-th optical backplane; i is an integer, 1≤i≤Q; M is an integer greater than or equal to 2, representing the number of switchable optical backplanes; N is an integer, and N is equal to the number of fiber cores in the optical interface of each optical backplane or each wavelength switch selector; Q is an integer greater than or equal to 1, representing the number of optical interfaces on the optical backplane or the number of wavelength switch selectors;

[0010] An optical switch controller is used to receive signals from a wavelength switch selector and generate a switching signal when it is determined from the signals of the wavelength switch selector that there is no line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself.

[0011] The switching device is used to control Q optical switch arrays to perform optical backplane switching according to the switching signal.

[0012] The device further includes:

[0013] At least two photodetectors, the at least two photodetectors comprising: a downlink photodetector and an uplink photodetector;

[0014] The first end of the downlink optical detector is used to detect the downlink optical detection signal, which is the optical signal on the common port of N 1×M optical switches from the optical interface of the electrical backplane or the optical interface of the wavelength switch selector to the optical interface of the optical backplane; the first end of the uplink optical detector is used to detect the uplink optical detection signal, which is the optical signal on the common port of N 1×M optical switches from the optical backplane to the optical interface of the electrical backplane or the optical interface of the wavelength switch selector.

[0015] The second end of the uplink optical detector and the second end of the downlink optical detector are respectively connected to the optical switch controller;

[0016] The optical switch controller is further configured to receive optical detection signals and generate a switching signal when it is determined, based on the optical detection signals and the signals of the wavelength switch selector, that the fault is not a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself; the optical detection signals include the uplink optical detection signals of the uplink optical detector and / or the downlink optical detection signals of the downlink optical detector.

[0017] The device further includes:

[0018] A 2×2 beam splitter is configured to correspond one-to-one with N 1×M optical switches. The first and second input ends of the beam splitter are respectively connected to the common port of the corresponding 1×M optical switch and the optical interface of the corresponding fiber core or wavelength switch selector on the backplane. The third end of the beam splitter is connected to the multi-beam input end of the downlink beam combiner, and the fourth end of the beam splitter is connected to the multi-beam input end of the uplink beam combiner.

[0019] The output terminal of the downlink beam combiner is connected to the first terminal of the downlink photodetector, and the output terminal of the uplink beam combiner is connected to the first terminal of the uplink photodetector.

[0020] Secondly, embodiments of this application also provide a backplane switching method, applied to the backplane switching device described above, comprising:

[0021] Acquire the signal from the wavelength switch selector;

[0022] Determine whether the optical backplane needs to be replaced based on the signal from the wavelength switch selector;

[0023] When it is determined from the signal of the wavelength switch selector that the optical backplane needs to be switched, a switching signal is generated, and the switching signal is used to control the Q optical switch arrays to switch the optical backplane.

[0024] Q is an integer greater than or equal to 1, representing the number of optical backplane interfaces or wavelength switch selectors.

[0025] The method further includes:

[0026] Acquire the optical detection signal of the optical switch array, wherein the optical detection signal includes the uplink optical detection signal of the uplink optical detector and / or the downlink optical detection signal of the downlink optical detector;

[0027] The step of determining whether the optical backplane needs to be switched based on the signal from the wavelength switch selector includes:

[0028] Determine whether the optical backplane needs to be replaced based on the optical detection signal and the signal from the wavelength switch selector;

[0029] When it is determined from the signal of the wavelength switch selector that the optical backplane needs to be switched, a switching signal is generated, including:

[0030] When it is determined that the optical backplane needs to be switched based on the optical detection signal and the signal from the wavelength switch selector, a switching signal is generated.

[0031] The step of determining whether the optical backplane needs to be switched based on the optical detection signal and the signal from the wavelength switch selector includes:

[0032] Determine whether the fault is a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself based on the signal from the wavelength switch selector.

[0033] In cases where the fault is not on the line side of the wavelength switch selector and / or the wavelength switch selector itself, determine whether the optical backplane needs to be replaced based on the optical detection signal and the signal from the wavelength switch selector.

[0034] Wherein, determining whether an optical backplane needs to be replaced based on the optical detection signal and the signal of the wavelength switch selector, in cases where the fault is not a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself, includes:

[0035] When an alarm signal is received from the first wavelength switch selector, but the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is abnormal, it is determined that there is no need to switch the optical backplane.

[0036] When an alarm signal is received from the first wavelength switch selector and the downlink optical probe signal of the first optical switch array connected to the first wavelength switch selector is normal, and an alarm signal is received from the second wavelength switch selector and the uplink optical probe signal of the second optical switch array connected to the second wavelength switch selector is normal, it is determined that no optical backplane replacement is required; the second direction is different from the direction of the first wavelength switch selector.

[0037] When an alarm signal is received from the first wavelength switch selector, the downlink optical probe signal of the first optical switch array connected to the first wavelength switch selector is normal, and an alarm signal is received from the second wavelength switch selector, the uplink optical probe signal of the second optical switch array connected to the second wavelength switch selector is abnormal, it is determined that the optical backplane needs to be replaced; the second direction is different from the direction of the first wavelength switch selector.

[0038] The abnormality of the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector includes: when the optical power of the downlink optical detection signal of the first optical switch array at a second moment is less than the optical power at a first moment, and the decrease in optical power is greater than a first preset threshold, it is determined that the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is abnormal; wherein, the second moment is later than the first moment.

[0039] The uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal, including: when the optical power of the uplink optical detection signal of the second optical switch array at the fourth time is less than the optical power at the third time, and the decrease in optical power is greater than a second preset threshold, it is determined that the uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal; wherein, the fourth time is later than the third time.

[0040] The step of controlling the Q optical switch arrays to perform optical backplane switching using the switching signal includes:

[0041] The connection between the optical switch array and the optical backplane is switched from the current optical backplane to another optical backplane, and the optical switch array is connected to the current optical backplane or the other optical backplane respectively.

[0042] Thirdly, embodiments of this application provide an optical backplane switching device, comprising:

[0043] The first acquisition module is used to acquire the signal from the wavelength switch selector;

[0044] The first determining module is used to determine whether the optical backplane needs to be switched based on the signal from the wavelength switch selector.

[0045] The first control module is used to generate a switching signal when it is determined from the signal of the wavelength switch selector that the optical backplane needs to be switched, and to use the switching signal to control the Q optical switch arrays to switch the optical backplane.

[0046] Q is an integer greater than or equal to 1, representing the number of optical backplane interfaces or wavelength switch selectors.

[0047] The device further includes:

[0048] The second acquisition module is used to acquire the optical detection signal of the optical switch array, the optical detection signal including the uplink optical detection signal of the uplink optical detector and / or the downlink optical detection signal of the downlink optical detector;

[0049] The first determining module is used to determine whether the optical backplane needs to be replaced based on the optical detection signal and the signal of the wavelength switch selector;

[0050] The first control module is used to generate a switching signal when it is determined, based on the optical detection signal and the signal of the wavelength switch selector, that the optical backplane needs to be switched.

[0051] The first determining module includes:

[0052] The first determining submodule is used to determine, based on the signal from the wavelength switch selector, whether it is a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself.

[0053] The second determining submodule is used to determine whether the optical backplane needs to be replaced based on the optical detection signal and the signal of the wavelength switch selector, in the case that the fault is not a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself.

[0054] The second determining submodule includes:

[0055] The first determining unit is used to determine that no optical backplane replacement is required when an alarm signal is received from the first wavelength switch selector, but the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is abnormal.

[0056] The second determining unit is configured to determine that no optical backplane replacement is required when it receives an alarm signal from the first wavelength switch selector, the downlink optical probe signal of the first optical switch array connected to the first wavelength switch selector is normal, and it receives an alarm signal from the second wavelength switch selector, the uplink optical probe signal of the second optical switch array connected to the second wavelength switch selector is normal; the second direction is different from the direction of the first wavelength switch selector.

[0057] The third determining unit is used to determine that the optical backplane needs to be replaced when it receives an alarm signal from the first wavelength switch selector, the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is normal, and it receives an alarm signal from the second wavelength switch selector, the uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal; the second direction is different from the direction of the first wavelength switch selector.

[0058] The abnormality of the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector includes: when the optical power of the downlink optical detection signal of the first optical switch array at a second moment is less than the optical power at a first moment, and the decrease in optical power is greater than a first preset threshold, it is determined that the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is abnormal; wherein, the second moment is later than the first moment.

[0059] The uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal, including: when the optical power of the uplink optical detection signal of the second optical switch array at the fourth time is less than the optical power at the third time, and the decrease in optical power is greater than a second preset threshold, it is determined that the uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal; wherein, the fourth time is later than the third time.

[0060] The first control module is used to switch the connection between the optical switch array and the optical backplane from the current optical backplane to another optical backplane, wherein the optical switch array is connected to the current optical backplane or another optical backplane respectively.

[0061] Fourthly, embodiments of this application provide an optical backplane switching device, including: a processor and a transceiver;

[0062] The processor is used for:

[0063] Acquire the signal from the wavelength switch selector;

[0064] Determine whether the optical backplane needs to be replaced based on the signal from the wavelength switch selector;

[0065] When it is determined from the signal of the wavelength switch selector that the optical backplane needs to be switched, a switching signal is generated, and the switching signal is used to control the Q optical switch arrays to perform optical backplane switching.

[0066] The processor is also used for:

[0067] Acquire the optical detection signal of the optical switch array, wherein the optical detection signal includes the uplink optical detection signal of the uplink optical detector and / or the downlink optical detection signal of the downlink optical detector;

[0068] Determine whether the optical backplane needs to be replaced based on the optical detection signal and the signal from the wavelength switch selector;

[0069] When it is determined that the optical backplane needs to be switched based on the optical detection signal and the signal from the wavelength switch selector, a switching signal is generated.

[0070] The processor is configured to determine, based on the signal from the wavelength switch selector, whether the fault is a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself; and if the fault is not a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself, to determine, based on the optical detection signal and the signal from the wavelength switch selector, whether the optical backplane needs to be replaced.

[0071] The processor is used for:

[0072] When an alarm signal is received from the first wavelength switch selector, but the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is abnormal, it is determined that there is no need to switch the optical backplane.

[0073] When an alarm signal is received from the first wavelength switch selector and the downlink optical probe signal of the first optical switch array connected to the first wavelength switch selector is normal, and an alarm signal is received from the second wavelength switch selector and the uplink optical probe signal of the second optical switch array connected to the second wavelength switch selector is normal, it is determined that no optical backplane replacement is required; the second direction is different from the direction of the first wavelength switch selector.

[0074] When an alarm signal is received from the first wavelength switch selector, the downlink optical probe signal of the first optical switch array connected to the first wavelength switch selector is normal, and an alarm signal is received from the second wavelength switch selector, the uplink optical probe signal of the second optical switch array connected to the second wavelength switch selector is abnormal, it is determined that the optical backplane needs to be replaced; the second direction is different from the direction of the first wavelength switch selector.

[0075] The abnormality of the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector includes: when the optical power of the downlink optical detection signal of the first optical switch array at a second moment is less than the optical power at a first moment, and the decrease in optical power is greater than a first preset threshold, it is determined that the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is abnormal; wherein, the second moment is later than the first moment.

[0076] The uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal, including: when the optical power of the uplink optical detection signal of the second optical switch array at the fourth time is less than the optical power at the third time, and the decrease in optical power is greater than a second preset threshold, it is determined that the uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal; wherein, the fourth time is later than the third time.

[0077] The processor is used for:

[0078] The connection between the optical switch array and the optical backplane is switched from the current optical backplane to another optical backplane, and the optical switch array is connected to the current optical backplane or the other optical backplane respectively.

[0079] Fifthly, embodiments of this application also provide a communication device, including: a transceiver, a memory, a processor, and a program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps in the optical backplane switching method described above.

[0080] Sixthly, embodiments of this application also provide a readable storage medium storing a program that, when executed by a processor, implements the steps in the optical backplane switching method described above.

[0081] In this embodiment, when it is determined that the optical backplane needs to be replaced based on the signal from the wavelength switch selector, the switching device controls the Q optical switch arrays to perform optical backplane switching according to the switching signal. Therefore, it can be seen that the solution in this embodiment can achieve optical backplane switching, reducing the impact on services. Attached Figure Description

[0082] Figure 1 This is a schematic diagram of an optical backplane in the prior art;

[0083] Figure 2 This is one of the schematic diagrams of the backplane switching device provided in the embodiments of this application;

[0084] Figure 3 This is the second schematic diagram of the backplane switching device provided in the embodiments of this application;

[0085] Figure 4 This is the third schematic diagram of the optical backplane switching device provided in the embodiments of this application;

[0086] Figure 5 This is the fourth schematic diagram of the optical backplane switching device provided in the embodiments of this application;

[0087] Figure 6(a) is a fourth schematic diagram of the backplane switching device provided in the embodiment of this application;

[0088] Figure 6(b) is the fifth schematic diagram of the backplane switching device provided in the embodiments of this application;

[0089] Figure 7 This is one of the flowcharts of the backplane switching method provided in the embodiments of this application;

[0090] Figure 8 This is the second flowchart of the backplane switching method provided in the embodiments of this application;

[0091] Figure 9 This is the third flowchart of the backplane switching method provided in the embodiments of this application;

[0092] Figure 10 This is one of the structural diagrams of the optical backplane switching device provided in the embodiments of this application;

[0093] Figure 11 This is the second structural diagram of the backplane switching device provided in the embodiments of this application. Detailed Implementation

[0094] In the embodiments of this application, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0095] In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0096] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0097] See Figure 2 , Figure 2 This is a schematic diagram of the optical backplane switching device provided in an embodiment of this application. Figure 2 As shown, the optical backplane switching device may include:

[0098] Q optical switch arrays 001, each optical switch array including N 1×M optical switches; the common port of the N 1×M optical switches forms a common optical interface with N fiber cores; the first port of the N 1×M optical switches forms a first optical interface with N fiber cores, the second port of the N 1×M optical switches forms a second optical interface with N fiber cores, and so on, the Mth port of the N 1×M optical switches forms the Mth optical interface with N fiber cores.

[0099] In this configuration, for the i-th optical switch array, the common optical interface of the i-th optical switch array is connected to the i-th optical interface of the electrical backplane or to the first optical interface of the i-th wavelength switch selector. The first optical interface is connected to the i-th optical interface of the first optical backplane, the second optical interface is connected to the i-th optical interface of the second optical backplane, and so on, with the M-th optical interface connected to the i-th optical interface of the M-th optical backplane. i is an integer, 1≤i≤Q. M is an integer greater than or equal to 2, representing the number of switchable optical backplanes. N is an integer, and N equals the number of fiber cores in the optical interface of each optical backplane or each wavelength switch selector. Q is an integer greater than or equal to 1, representing the number of optical interfaces on the optical backplane or the number of wavelength switch selectors.

[0100] For example, for the first optical switch array, its common optical interface is connected to the first optical interface of the electrical backplane or to the first optical interface of the first wavelength switch selector. Its first optical interface is connected to the first optical interface of the first optical backplane, its second optical interface is connected to the first optical interface of the second optical backplane, and so on, with the Mth optical interface connected to the first optical interface of the Mth optical backplane.

[0101] For the second optical switch array, its common optical interface is connected to the second optical interface of the electrical backplane or to the first optical interface of the second wavelength switch selector. Its first optical interface is connected to the second optical interface of the first optical backplane, its second optical interface is connected to the second optical interface of the second optical backplane, and so on, with the Mth optical interface connected to the second optical interface of the Mth optical backplane.

[0102] Similarly, for the Qth optical switch array, its common optical interface is connected to the Qth optical interface of the electrical backplane or to the first optical interface of the Qth wavelength switch selector. Its first optical interface is connected to the Qth optical interface of the first optical backplane, its second optical interface is connected to the Qth optical interface of the second optical backplane, and so on, with the Mth optical interface connected to the Qth optical interface of the Mth optical backplane.

[0103] The optical switch controller 002 is used to receive signals from the wavelength switch selector and generate a switching signal when it is determined from the signals of the wavelength switch selector that there is no line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself.

[0104] The switching device 003 is used to control the Q optical switch arrays to perform optical backplane switching according to the switching signal.

[0105] The wavelength switch selector can be installed inside the board.

[0106] In this embodiment, when it is determined that the optical backplane needs to be replaced based on the signal from the wavelength switch selector, the switching device controls the Q optical switch arrays to perform optical backplane switching according to the switching signal. Therefore, it can be seen that the solution in this embodiment can achieve optical backplane switching, reducing the impact on services.

[0107] like Figure 3 As shown, the optical backplane switching device may further include:

[0108] At least two photodetectors, the at least two photodetectors including: a downlink photodetector 004 and an uplink photodetector 005;

[0109] The first end of the downlink optical detector is used to detect the downlink optical detection signal, which is the optical signal from the optical interface of the electrical backplane or the optical interface of the wavelength switch selector to the optical interface of the optical backplane on the common port of N 1×M optical switches; the first end of the uplink optical detector is used to detect the uplink optical detection signal, which is the optical signal from the optical backplane to the optical interface of the electrical backplane or the optical interface of the wavelength switch selector on the common port of N 1×M optical switches; the second end of the uplink optical detector and the second end of the downlink optical detector are respectively connected to the optical switch controller.

[0110] The optical switch controller 002 is further configured to receive optical detection signals and generate switching signals when it is determined, based on the optical detection signals and the signals of the wavelength switch selector, that the fault is not a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself; the optical detection signals include the uplink optical detection signals of the uplink optical detector and / or the downlink optical detection signals of the downlink optical detector.

[0111] like Figure 4 As shown, the optical backplane switching device may include:

[0112] An optical switch array (one is shown as an example in the figure) includes N 1×M optical switches 1011 and at least two photodetectors. The at least two photodetectors include a downlink photodetector 1022a and an uplink photodetector 1022b. The first end of the downlink photodetector is used to detect a downlink probe optical signal, which is an optical signal on the common port of the N 1×M optical switches from the optical interface of the electrical backplane or the optical interface of the wavelength switch selector to the optical interface of the optical backplane. The first end of the uplink photodetector is used to detect an uplink optical probe signal, which is an optical signal on the common port of the N 1×M optical switches from the optical backplane to the optical interface of the electrical backplane or the optical interface of the wavelength switch selector. The second ends of the uplink and downlink photodetectors are respectively connected to an optical switch controller.

[0113] Specifically, in combination Figure 4 It includes at least one downlink optical detector 1022a and at least one uplink optical detector 1022b. Figure 4(Taking an example where there is only one downlink optical detector and one uplink optical detector). For each 1×M optical switch, the common port c is connected to the optical interface of the electrical backplane or the optical interface of the wavelength switch selector; the first port a is connected to the optical interface of the first optical backplane; and the Mth port m is connected to the optical interface of the Mth optical backplane. The first end 1022a1 of the downlink optical detector 1022a is used to detect the optical signal on the common port c of the N 1×M optical switches from the optical interface of the electrical backplane or the optical interface of the wavelength switch selector to the optical interface of the optical backplane. The first end 1022b1 of the uplink optical detector 1022b is used to detect the optical signal on the common port c of the N 1×M optical switches from the optical backplane to the optical interface of the electrical backplane or the optical interface of the wavelength switch selector. N is an integer, and the value of N is equal to the number of interface fiber cores of each optical interface of each optical backplane. M is an integer greater than or equal to 2, representing the number of switchable optical backplanes. The downlink optical detector forms a downlink optical detector... The uplink optical detector generates an uplink optical detection signal; the second terminal 1022b2 of the uplink optical detector and the second terminal 1022a2 of the downlink optical detector are respectively connected to the optical switch controller 103; the optical switch controller 103 is used to receive the optical detection signal of the optical detector and the signal of the wavelength switch selector, and generate a switching signal according to the optical detection signal and the signal of the wavelength switch selector; the optical detection signal includes the uplink optical detection signal of the uplink optical detector and / or the downlink optical detection signal of the downlink optical detector; the switching device 102 is used to control the Q optical switch arrays to perform optical backplane switching according to the switching signal.

[0114] The optical switch array has the capability to perform N 1×M optical switching and optical power detection, and can be a combination of N 1×M optical switches and photodetector arrays. Assuming the current optical switch array is connected to the first optoelectronic board, then when a fault is determined in the first optoelectronic board A1, each optical switch can be controlled to connect to the second optoelectronic board.

[0115] In this embodiment, when the optical switch controller determines that the optical backplane needs to be replaced based on the photodetector's photodetector signal and the wavelength switch selector signal, the switching device controls the Q optical switch arrays to perform optical backplane switching according to the switching signal from the optical switch controller. Therefore, it can be seen that the solution in this embodiment can achieve optical backplane switching, reducing the impact on services.

[0116] Optionally, to improve the accuracy of control, such as Figure 5 As shown, the device may further include:

[0117] A 2×2 beam splitter 104 is configured to correspond one-to-one with N 1×M optical switches. The first and second ends of the beam splitter are respectively connected to the common port of the corresponding 1×M optical switch and the optical interface of the electrical backplane or the optical interface of the wavelength switch selector. The third end of the beam splitter is connected to the multi-beam input end of the downlink beam combiner, and the fourth end of the beam splitter is connected to the multi-beam input end of the uplink beam combiner. The beam combining output end of the downlink beam combiner is connected to the first end of the downlink photodetector, and the beam combining output end of the uplink beam combiner is connected to the first end of the uplink photodetector.

[0118] like Figure 5 As shown, a 2×2 beam splitter 104 is configured one-to-one with N 1×M (taking M=2 as an example) optical switches. The first end 1042 and the second end 1041 of the beam splitter are respectively connected to the common port c of the corresponding 1×M optical switch, the optical interface of the backplane, or the optical interface of the wavelength switch selector. The third end 1043 of the beam splitter is connected to the first end 1051 (multi-beam input) of the downlink beam combiner 105; the fourth end 1044 of the beam splitter is connected to the first end 1061 (multi-beam input) of the uplink beam combiner 106. The beam combining output end 1052 of the downlink beam combiner is connected to the first end of the downlink photodetector, and the beam combining output end 1062 of the uplink beam combiner is connected to the first end of the uplink photodetector.

[0119] Optional, Figure 5 In addition, the beam splitter can also be connected as follows: the second end 1041 is connected to the common port c of the corresponding 1×M optical switch, the third end is connected to the first end 1061 (multi-beam input) of the uplink beam combiner 106; the first end 1042 is connected to the optical interface of the backplane or the optical interface of the wavelength switch selector, and the fourth end 1044 is connected to the first end 1051 (multi-beam input) of the downlink beam combiner 105.

[0120] Optional, Figure 5 In addition, the beam splitter can also be connected as follows: the fourth end 1044 and the third end 1043 of the beam splitter are respectively connected to the common port c of the corresponding 1×M optical switch, the optical interface of the electrical backplane, or the optical interface of the wavelength switch selector; the second end 1041 of the beam splitter is connected to the first end 1051 (multi-beam input end) of the downlink beam combiner 105; and the first end 1042 of the beam splitter is connected to the first end 1061 (multi-beam input end) of the uplink beam combiner 106.

[0121] Optional, Figure 5In addition, the beam splitter can also be connected as follows: the second end 1041 is connected to the first end 1061 (multi-beam input end) of the uplink beam combiner 106, the third end 1043 is connected to the common port c of the corresponding 1×M optical switch, the first end 1042 is connected to the first end 1051 (multi-beam input end) of the downlink beam combiner 105, and the fourth end 1044 is connected to the optical interface of the backplane or the optical interface of the wavelength switch selector.

[0122] Of course, in practical applications, the connection method of the optical splitter is not limited to the few situations described above, and can be adjusted accordingly according to actual needs.

[0123] exist Figure 5 In this configuration, 2×2 beam splitters are positioned on the main circuit of each 1×M optical switch, and Figure 5 The diagram illustrates a beam combiner setup. In practical applications, the number of beam combiners can be adjusted as needed. All N beam splitters have their two upper branch ports connected to the beam combiner, which is then connected to a photodetector. The photodetector monitors the optical power changes of the optical switch array, and the switching device simultaneously switches all N optical switches upon receiving a switching signal.

[0124] The electrical signal ports of the optical switch array are uniformly connected to the optical switch controller; the optical switch controller is connected to the alarm channels of the optical switch array and the wavelength switch selectors (or boards) in each direction.

[0125] Referring to Figure 6(a), Figure 6(a) is a schematic diagram of the optical backplane switching device provided in an embodiment of this application. Optical switches 44 and 45 of the optical switch array are connected to two optical backplanes 41 and 42, respectively, and to an electrical backplane 46; the connection between the optical switches in the optical switch array and the two optical backplanes is controlled by the optical switch controller 43 (i.e., the switching device). The electrical backplane 46 is provided with an optical interface 47 and an electrical interface 48.

[0126] Referring to Figure 6(b), which is another schematic diagram of the optical backplane switching device provided in the embodiment of this application, the optical switch array optical switches 44 and 45 are connected to the two optical backplanes 41 and 42 respectively, and to the wavelength switch selector 49; the connection between the optical switches in the optical switch array and the two optical backplanes is controlled by the optical switch controller 43 (i.e., the switching device).

[0127] See Figure 7 , Figure 7 This is a flowchart of the backplane switching method according to an embodiment of this application, as follows: Figure 7 As shown, it includes the following steps:

[0128] Step 501: Obtain the signal from the wavelength switch selector.

[0129] The embodiments of this application can be applied to, for example... Figure 2 or Figure 3 or Figure 4 or Figure 5 The optical backplane switching device is shown in Figure 6(a) or Figure 6(b). The optical switch controller acquires the optical detection signal of the optical switch array, such as optical power, through a photodetector. The signals of the wavelength switch selector may include the optical detection signal status of the wavelength switch selector, alarm signals, etc.

[0130] Step 502: Determine whether the optical backplane needs to be switched based on the signal from the wavelength switch selector.

[0131] Initially, the optical switches in the photodetector array are connected to the same optical backplane. Upon receiving an optical signal fault alarm from a wavelength switch selector in either direction, a judgment process is initiated. First, the signal from the wavelength switch selector is used to determine whether the fault is on the line side of the wavelength switch selector and / or the wavelength switch selector itself. If so, the process terminates. Otherwise, it is determined that the optical backplane needs to be replaced.

[0132] Step 503: When it is determined that the optical backplane needs to be switched based on the signal of the wavelength switch selector, a switching signal is generated, and the switching signal is used to control the Q optical switch arrays to switch the optical backplane.

[0133] Q is an integer greater than or equal to 1, representing the number of optical backplane interfaces or wavelength switch selectors.

[0134] In this embodiment, when it is determined that the optical backplane needs to be replaced based on the signal from the wavelength switch selector, the switching device controls the Q optical switch arrays to perform optical backplane switching according to the switching signal. Therefore, it can be seen that the solution in this embodiment can achieve optical backplane switching, reducing the impact on services.

[0135] See Figure 8 , Figure 8 This is a flowchart of the backplane switching method according to an embodiment of this application, as follows: Figure 8 As shown, it includes the following steps:

[0136] Step 601: Obtain the optical detection signal of the optical switch array, wherein the optical detection signal includes the uplink optical detection signal of the uplink optical detector and / or the downlink optical detection signal of the downlink optical detector.

[0137] The embodiments of this application can be applied to, for example... Figure 2 or Figure 3 or Figure 4 or Figure 5 Or the optical backplane switching device shown in Figure 6(a) or Figure 6(b). The optical switch controller acquires the optical detection signal of the optical switch array, such as optical power, through a photodetector.

[0138] Step 602: Obtain the signal from the wavelength switch selector.

[0139] The signals of the wavelength switch selector may include the signal status of the wavelength switch selector, alarm signals, etc.

[0140] There is no strict sequential relationship between steps 601 and 602.

[0141] Step 603: Determine whether the optical backplane needs to be replaced based on the optical detection signal and the signal of the wavelength switch selector.

[0142] Initially, the optical switches in the optical detection array are connected to the same optical backplane. Upon receiving a fault alarm from the optical detection signal of the wavelength switch selector in either direction, a judgment process is initiated. First, the signal from the wavelength switch selector is used to determine whether the fault is on the line side of the wavelength switch selector and / or a fault in the wavelength switch selector itself. If so, the process can end. Otherwise, the optical detection signal and the signal from the wavelength switch selector are used to determine whether the optical backplane needs to be replaced. In other words, the main control board or network management system is first checked for line-side faults and / or faults in the board itself. If a line-side fault and / or a fault in the board itself are found, the process can end; otherwise, subsequent judgments continue.

[0143] When an alarm signal is received from the first wavelength switch selector, but the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is abnormal, it can be considered that a fault has occurred between the interface of the first wavelength switch selector and the first optical switch array, or that the first wavelength switch selector has failed, and it is determined that there is no need to replace the optical backplane.

[0144] When an alarm signal is received from the first wavelength switch selector and the downlink optical probe signal of the first optical switch array connected to the first wavelength switch selector is normal, and an alarm signal is received from the second wavelength switch selector and the uplink optical probe signal of the second optical switch array connected to the second wavelength switch selector is normal, it can be considered that a fault has occurred between the second optical switch array and the interface of the second wavelength selector connected to the second optical switch array, or that the second wavelength switch selector has failed, and it is determined that no optical backplane replacement is required; the second optical switch array is an optical switch array connected to a wavelength switch selector in a second direction (i.e., the second wavelength switch selector), and the second direction is different from the direction of the first wavelength switch selector.

[0145] When an alarm signal is received from the first wavelength switch selector, the downlink optical probe signal of the first optical switch array connected to the first wavelength switch selector is normal, and an alarm signal is received from the second wavelength switch selector, the uplink optical probe signal of the second optical switch array connected to the second wavelength switch selector is abnormal, it is determined that the optical backplane needs to be replaced; the second direction is different from the direction of the first wavelength switch selector.

[0146] In the above process, when the optical power of the downlink optical probe signal of the first optical switch array at the second moment is less than the optical power at the first moment, and the decrease in optical power is greater than the first preset threshold, it is determined that the downlink optical probe signal of the first optical switch array connected to the first wavelength switch selector is abnormal; wherein, the second moment is later than the first moment. The first preset threshold can be set as needed. For example, the optical switch controller compares the optical power of the optical switch array detected at time T and time T+ΔT. If the optical power decreases, and the decrease is greater than or equal to the threshold A, it is determined that the downlink optical probe signal of the optical switch array is abnormal. Wherein, the value of A is 1 / N1 of the optical power received at time T, and N1 is the number of fiber cores in the optical interface of the wavelength switch selector connected to the optical interface of the electrical backplane, which is usually less than N. ΔT is much greater than the symbol period of the system optical probe signal, but less than the time taken for the system optical power drift (1 / (2×N1)).

[0147] When the optical power of the uplink optical probe signal of the second optical switch array at the fourth moment is less than the optical power at the third moment, and the decrease in optical power is greater than the second preset threshold, it is determined that the uplink optical probe signal of the second optical switch array connected to the second wavelength switch selector is abnormal; wherein, the fourth moment is later than the third moment. The second preset threshold can be set as needed.

[0148] Step 604: When it is determined that the optical backplane needs to be switched based on the optical detection signal and the signal of the wavelength switch selector, a switching signal is generated, and the switching signal is used to control the Q optical switch arrays to switch the optical backplane.

[0149] During this process, the connection between the optical switch array and the optical backplane is switched from the current optical backplane to another optical backplane, and the optical switch array is connected to the current optical backplane or the other optical backplane respectively.

[0150] In this embodiment, when it is determined that the optical backplane needs to be replaced based on the photodetector's photodetector signal and the wavelength switch selector signal, the switching device controls the Q optical switch arrays to perform optical backplane switching according to the switching signal. Therefore, it can be seen that the solution in this embodiment can achieve optical backplane switching, reducing the impact on services.

[0151] See Figure 9 , Figure 9This is a flowchart of the backplane switching method according to an embodiment of this application, as follows: Figure 9 As shown, it includes the following steps:

[0152] Step 701: Connect all optical switches to the first optical backplane.

[0153] Step 702: Receive fault and alarm signals from the optical backplane direction of the wavelength switch selector.

[0154] An optical switch controller may receive signals from multiple wavelength switch selectors. The wavelength switch selector then designates one of the wavelength switch selectors in one direction as the first wavelength switch selector, and the optical switch array connected to it is called the first optical switch array.

[0155] Step 703: The optical switch controller checks with the control system whether it is a line-side fault of the wavelength switch selector in either direction and / or a fault of the wavelength switch selector itself. If yes, the process ends; otherwise, proceed to step 704.

[0156] Step 704: Determine if there is an abnormality in the light reception of the first optical switch array. If yes, proceed to step 705; otherwise, proceed to step 706.

[0157] Step 705: Report a fault between the first wavelength switch selector and the first optical switch array.

[0158] Step 706: Locate the wavelength switch selector with an optical signal fault alarm as the second wavelength switch selector, and determine whether the second optical switch array has a light reception abnormality, wherein the second wavelength switch selector connected to the second optical switch array has a different orientation than the first wavelength switch selector. If yes, proceed to step 707; otherwise, proceed to step 708.

[0159] Step 707: Report a fault between the second wavelength switch selector and the second optical switch array.

[0160] Step 708: Determine if the optical backplane needs to be switched. Specifically, connect all optical switch arrays to the second optical backplane.

[0161] Step 709: Check if the fault of the first wavelength switch selector has been eliminated. If yes, proceed to step 710; otherwise, proceed to step 711.

[0162] Step 710: If there is no fault alarm, send a backplane fault alarm to the superior control system but it has been cleared. The faulty backplane needs to be replaced.

[0163] Step 711: If the fault persists, send a backplane fault alarm to the higher-level control system, and the alarm cannot be cleared.

[0164] In the above embodiments, automatic protection switching is achieved through optical detection signal detection and automatic judgment, without manual intervention and without affecting the normal operation of services.

[0165] This application also provides an optical backplane switching device. For example... Figure 10 As shown, the optical backplane switching device 800 includes:

[0166] The first acquisition module 801 is used to acquire the signal from the wavelength switch selector;

[0167] The first determining module 802 is used to determine whether the optical backplane needs to be switched based on the signal from the wavelength switch selector.

[0168] The first control module 803 is used to generate a switching signal when it is determined from the signal of the wavelength switch selector that the optical backplane needs to be switched, and to use the switching signal to control the Q optical switch arrays to switch the optical backplane.

[0169] Q is an integer greater than or equal to 1, representing the number of optical backplane interfaces or wavelength switch selectors.

[0170] The device further includes:

[0171] The second acquisition module is used to acquire the optical detection signal of the optical switch array, the optical detection signal including the uplink optical detection signal of the uplink optical detector and / or the downlink optical detection signal of the downlink optical detector;

[0172] The first determining module is used to determine whether the optical backplane needs to be replaced based on the optical detection signal and the signal of the wavelength switch selector;

[0173] The first control module is used to generate a switching signal when it is determined, based on the optical detection signal and the signal of the wavelength switch selector, that the optical backplane needs to be switched.

[0174] The first determining module includes:

[0175] The first determining submodule is used to determine, based on the signal from the wavelength switch selector, whether it is a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself.

[0176] The second determining submodule is used to determine whether the optical backplane needs to be replaced based on the optical detection signal and the signal of the wavelength switch selector, in the case that the fault is not a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself.

[0177] The second determining submodule includes:

[0178] The first determining unit is used to determine that no optical backplane replacement is required when an alarm signal is received from the first wavelength switch selector, but the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is abnormal.

[0179] The second determining unit is configured to determine that no optical backplane replacement is required when it receives an alarm signal from the first wavelength switch selector, the downlink optical probe signal of the first optical switch array connected to the first wavelength switch selector is normal, and it receives an alarm signal from the second wavelength switch selector, the uplink optical probe signal of the second optical switch array connected to the second wavelength switch selector is normal; the second direction is different from the direction of the first wavelength switch selector.

[0180] The third determining unit is used to determine that the optical backplane needs to be replaced when it receives an alarm signal from the first wavelength switch selector, the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is normal, and it receives an alarm signal from the second wavelength switch selector, the uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal; the second direction is different from the direction of the first wavelength switch selector.

[0181] The abnormality of the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector includes: when the optical power of the downlink optical detection signal of the first optical switch array at a second moment is less than the optical power at a first moment, and the decrease in optical power is greater than a first preset threshold, it is determined that the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is abnormal; wherein, the second moment is later than the first moment.

[0182] The uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal, including: when the optical power of the uplink optical detection signal of the second optical switch array at the fourth time is less than the optical power at the third time, and the decrease in optical power is greater than a second preset threshold, it is determined that the uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal; wherein, the fourth time is later than the third time.

[0183] The first control module is used to switch the connection between the optical switch array and the optical backplane from the current optical backplane to another optical backplane, wherein the optical switch array is connected to the current optical backplane or another optical backplane respectively.

[0184] The apparatus provided in this application embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, so it will not be described again here.

[0185] It should be noted that the division of units in the embodiments of this application is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0186] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0187] This application also provides an optical backplane switching device. For example... Figure 11 As shown, the optical backplane switching device includes: a processor 901 and a transceiver 902;

[0188] The processor 901 is used to acquire the signal of the wavelength switch selector; determine whether the optical backplane needs to be switched based on the signal of the wavelength switch selector; when it is determined that the optical backplane needs to be switched based on the signal of the wavelength switch selector, generate a switching signal, and use the switching signal to control the Q optical switch arrays to perform optical backplane switching.

[0189] Q is an integer greater than or equal to 1, representing the number of optical backplane interfaces or wavelength switch selectors.

[0190] The processor is also used for:

[0191] Acquire the optical detection signal of the optical switch array, wherein the optical detection signal includes the uplink optical detection signal of the uplink optical detector and / or the downlink optical detection signal of the downlink optical detector;

[0192] Determine whether the optical backplane needs to be replaced based on the optical detection signal and the signal from the wavelength switch selector;

[0193] When it is determined that the optical backplane needs to be switched based on the optical detection signal and the signal from the wavelength switch selector, a switching signal is generated.

[0194] The processor is configured to determine, based on the signal from the wavelength switch selector, whether the fault is a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself; and if the fault is not a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself, to determine, based on the optical detection signal and the signal from the wavelength switch selector, whether the optical backplane needs to be replaced.

[0195] The processor is used for:

[0196] When an alarm signal is received from the first wavelength switch selector, but the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is abnormal, it is determined that there is no need to switch the optical backplane.

[0197] When an alarm signal is received from the first wavelength switch selector and the downlink optical probe signal of the first optical switch array connected to the first wavelength switch selector is normal, and an alarm signal is received from the second wavelength switch selector and the uplink optical probe signal of the second optical switch array connected to the second wavelength switch selector is normal, it is determined that no optical backplane replacement is required; the second direction is different from the direction of the first wavelength switch selector.

[0198] When an alarm signal is received from the first wavelength switch selector, the downlink optical probe signal of the first optical switch array connected to the first wavelength switch selector is normal, and an alarm signal is received from the second wavelength switch selector, the uplink optical probe signal of the second optical switch array connected to the second wavelength switch selector is abnormal, it is determined that the optical backplane needs to be replaced; the second direction is different from the direction of the first wavelength switch selector.

[0199] The abnormality of the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector includes: when the optical power of the downlink optical detection signal of the first optical switch array at a second moment is less than the optical power at a first moment, and the decrease in optical power is greater than a first preset threshold, it is determined that the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is abnormal; wherein, the second moment is later than the first moment.

[0200] The uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal, including: when the optical power of the uplink optical detection signal of the second optical switch array at the fourth time is less than the optical power at the third time, and the decrease in optical power is greater than a second preset threshold, it is determined that the uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal; wherein, the fourth time is later than the third time.

[0201] The processor is used for:

[0202] The connection between the optical switch array and the optical backplane is switched from the current optical backplane to another optical backplane, and the optical switch array is connected to the current optical backplane or the other optical backplane respectively.

[0203] The apparatus provided in this application embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, so it will not be described again here.

[0204] This application also provides a readable storage medium storing a program. When executed by a processor, this program implements the various processes of the aforementioned optical backplane switching method embodiments and achieves the same technical effect. To avoid repetition, it will not be described again here. The readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs), etc.).

[0205] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0206] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0207] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A backplane switching device, characterized in that, include: There are Q optical switch arrays, where each optical switch array includes N 1×M optical switches. The common port of the N 1×M optical switches forms a common optical interface with N fiber cores; the first port of the N 1×M optical switches forms a first optical interface with N fiber cores; the second port of the N 1×M optical switches forms a second optical interface with N fiber cores; and so on, the Mth port of the N 1×M optical switches forms the Mth optical interface with N fiber cores. Wherein, for the i-th optical switch array, the common optical interface of the i-th optical switch array is connected to the i-th optical interface of the electrical backplane or to the first optical interface of the i-th wavelength switch selector. The first optical interface is connected to the i-th optical interface of the first optical backplane, the second optical interface is connected to the i-th optical interface of the second optical backplane, and so on, with the M-th optical interface connected to the i-th optical interface of the M-th optical backplane; i is an integer, 1≤i≤Q; M is an integer greater than or equal to 2, representing the number of switchable optical backplanes; N is an integer, and N is equal to the number of fiber cores in the optical interface of each optical backplane or each wavelength switch selector; Q is an integer greater than or equal to 1, representing the number of optical interfaces on the optical backplane or the number of wavelength switch selectors; An optical switch controller is used to receive signals from the wavelength switch selector and generate a switching signal when it is determined from the signals of the wavelength switch selector that there is no line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself. The switching device is used to control Q optical switch arrays to perform optical backplane switching according to the switching signal.

2. The apparatus according to claim 1, characterized in that, The device further includes: At least two photodetectors, the at least two photodetectors comprising: a downlink photodetector and an uplink photodetector; The first end of the downlink optical detector is used to detect the downlink optical detection signal, which is the optical signal on the common port of N 1×M optical switches from the optical interface of the electrical backplane or the optical interface of the wavelength switch selector to the optical interface of the optical backplane; the first end of the uplink optical detector is used to detect the uplink optical detection signal, which is the optical signal on the common port of N 1×M optical switches from the optical backplane to the optical interface of the electrical backplane or the optical interface of the wavelength switch selector. The second end of the uplink optical detector and the second end of the downlink optical detector are respectively connected to the optical switch controller; The optical switch controller is also configured to receive an optical detection signal and generate a switching signal when it is determined, based on the optical detection signal and the signal of the wavelength switch selector, that the fault is not a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself. The optical detection signal includes the uplink optical detection signal of the uplink optical detector and / or the downlink optical detection signal of the downlink optical detector.

3. The apparatus according to claim 2, characterized in that, The device further includes: A 2×2 beam splitter is configured to correspond one-to-one with N 1×M optical switches. The first and second ends of the beam splitter are respectively connected to the common port of the corresponding 1×M optical switch and the optical interface of the electrical backplane or the optical interface of the wavelength switch selector. The third end of the beam splitter is connected to the multi-beam input end of the downlink beam combiner, and the fourth end of the beam splitter is connected to the multi-beam input end of the uplink beam combiner. The output terminal of the downlink beam combiner is connected to the first terminal of the downlink photodetector, and the output terminal of the uplink beam combiner is connected to the first terminal of the uplink photodetector.

4. A method for switching optical backplanes, applied to the optical backplane switching apparatus of any one of claims 1 to 3, characterized in that, include: Acquire the signal from the wavelength switch selector; Determine whether the optical backplane needs to be replaced based on the signal from the wavelength switch selector; When it is determined from the signal of the wavelength switch selector that the optical backplane needs to be switched, a switching signal is generated, and the switching signal is used to control the Q optical switch arrays to switch the optical backplane. Q is an integer greater than or equal to 1, representing the number of optical backplane interfaces or wavelength switch selectors.

5. The method according to claim 4, characterized in that, The method further includes: Acquire the optical detection signal of the optical switch array, wherein the optical detection signal includes the uplink optical detection signal of the uplink optical detector and / or the downlink optical detection signal of the downlink optical detector; The step of determining whether the optical backplane needs to be switched based on the signal from the wavelength switch selector includes: Determine whether the optical backplane needs to be replaced based on the optical detection signal and the signal from the wavelength switch selector; When it is determined from the signal of the wavelength switch selector that the optical backplane needs to be switched, a switching signal is generated, including: When it is determined that the optical backplane needs to be switched based on the optical detection signal and the signal from the wavelength switch selector, a switching signal is generated.

6. The method according to claim 5, characterized in that, The step of determining whether the optical backplane needs to be switched based on the optical detection signal and the signal from the wavelength switch selector includes: Determine whether the fault is a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself based on the signal from the wavelength switch selector. In cases where the fault is not on the line side of the wavelength switch selector and / or the wavelength switch selector itself, determine whether the optical backplane needs to be replaced based on the optical detection signal and the signal from the wavelength switch selector.

7. The method according to claim 6, characterized in that, In cases where the fault is not a line-side fault of the wavelength switch selector and / or a fault of the wavelength switch selector itself, determining whether a replacement of the optical backplane is necessary based on the optical detection signal and the signal of the wavelength switch selector includes: When an alarm signal is received from the first wavelength switch selector, but the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is abnormal, it is determined that there is no need to switch the optical backplane. When an alarm signal is received from the first wavelength switch selector and the downlink optical probe signal of the first optical switch array connected to the first wavelength switch selector is normal, and an alarm signal is received from the second wavelength switch selector and the uplink optical probe signal of the second optical switch array connected to the second wavelength switch selector is normal, it is determined that no optical backplane replacement is required; the second direction is different from the direction of the first wavelength switch selector. When an alarm signal is received from the first wavelength switch selector, the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is normal, and an alarm signal is received from the second wavelength switch selector, the uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal, it is determined that the optical backplane needs to be replaced; the second direction is different from the direction of the first wavelength switch selector.

8. The method according to claim 7, characterized in that, The downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is abnormal, including: when the optical power of the downlink optical detection signal of the first optical switch array at a second time is less than the optical power at a first time, and the decrease in optical power is greater than a first preset threshold, it is determined that the downlink optical detection signal of the first optical switch array connected to the first wavelength switch selector is abnormal; wherein, the second time is later than the first time. The uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal, including: when the optical power of the uplink optical detection signal of the second optical switch array at the fourth time is less than the optical power at the third time, and the decrease in optical power is greater than a second preset threshold, it is determined that the uplink optical detection signal of the second optical switch array connected to the second wavelength switch selector is abnormal; wherein, the fourth time is later than the third time.

9. The method according to any one of claims 4 to 8, characterized in that, The method of controlling the Q optical switch arrays to perform optical backplane switching using the switching signal includes: The connection between the optical switch array and the optical backplane is switched from the current optical backplane to another optical backplane, and the optical switch array is connected to the current optical backplane or the other optical backplane respectively.

10. A backplane switching device, characterized in that, include: The first acquisition module is used to acquire the signal from the wavelength switch selector; The first determining module is used to determine whether the optical backplane needs to be switched based on the signal from the wavelength switch selector. The first control module is used to generate a switching signal when it is determined from the signal of the wavelength switch selector that the optical backplane needs to be switched, and to use the switching signal to control the Q optical switch arrays to switch the optical backplane. Q is an integer greater than or equal to 1, representing the number of optical backplane interfaces or the number of wavelength switch selectors; Each of the Q optical switch arrays includes N 1×M optical switches. The common port of the N 1×M optical switches forms a common optical interface with N fiber cores. The first port of the N 1×M optical switches forms a first optical interface with N fiber cores. The second port of the N 1×M optical switches forms a second optical interface with N fiber cores. And so on, the Mth port of the N 1×M optical switches forms the Mth optical interface with N fiber cores. Wherein, for the i-th optical switch array, the common optical interface of the i-th optical switch array is connected to the i-th optical interface of the electrical backplane or to the first optical interface of the i-th wavelength switch selector. The first optical interface is connected to the i-th optical interface of the first optical backplane, the second optical interface is connected to the i-th optical interface of the second optical backplane, and so on, with the M-th optical interface connected to the i-th optical interface of the M-th optical backplane; i is an integer, 1≤i≤Q; M is an integer greater than or equal to 2, which is the number of switchable optical backplanes; N is an integer, and N is equal to the number of fiber cores in the optical interface of each optical backplane or each wavelength switch selector.

11. A backplane switching device, characterized in that, include: Processor and transceiver; The processor is used to acquire signals from the wavelength switch selector; Determine whether the optical backplane needs to be replaced based on the signal from the wavelength switch selector; When it is determined from the signal of the wavelength switch selector that the optical backplane needs to be switched, a switching signal is generated, and the switching signal is used to control the Q optical switch arrays to switch the optical backplane. Each of the Q optical switch arrays includes N 1×M optical switches. The common port of the N 1×M optical switches forms a common optical interface with N fiber cores. The first port of the N 1×M optical switches forms a first optical interface with N fiber cores. The second port of the N 1×M optical switches forms a second optical interface with N fiber cores. And so on, the Mth port of the N 1×M optical switches forms the Mth optical interface with N fiber cores. Wherein, for the i-th optical switch array, the common optical interface of the i-th optical switch array is connected to the i-th optical interface of the electrical backplane or to the first optical interface of the i-th wavelength switch selector. The first optical interface is connected to the i-th optical interface of the first optical backplane, the second optical interface is connected to the i-th optical interface of the second optical backplane, and so on, with the M-th optical interface connected to the i-th optical interface of the M-th optical backplane; i is an integer, 1≤i≤Q; M is an integer greater than or equal to 2, which is the number of switchable optical backplanes; N is an integer, and N is equal to the number of fiber cores in the optical interface of each optical backplane or each wavelength switch selector.

12. A communication device, comprising: A transceiver, a memory, a processor, and a program stored in the memory and executable on the processor; characterized in that the processor is configured to read the program in the memory to implement the steps in the optical backplane switching method as described in any one of claims 4 to 9.

13. A readable storage medium for storing a program, characterized in that, When the program is executed by the processor, it implements the steps in the optical backplane switching method as described in any one of claims 4 to 9.

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