Optical layer signal processing method and device, storage medium and electronic device

Abstract

The embodiment of the invention provides an optical layer signal processing method and device, a storage medium and an electronic device. The method comprises the steps that a broadband light source is modulated to generate a first signal, and the first signal is a broadband light source signal carrying modulation information; selecting a specific first signal according to a filling wave processing requirement, inserting all / part of a frequency spectrum of the specific first signal into an optical path system, and filling an idle frequency spectrum on an optical path; and detecting modulation information at the downstream optical signal detection point to obtain the modulation information inserted by the upstream first signal. By the adoption of the technical scheme, the problems that the operation and maintenance information of the optical layer signal can only be transmitted in a non-channel mode, and consequently the complexity in the transmission processing process is high are solved, and the method simplifies the complexity in the optical layer signal transmission processing process.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of communication technology, and in particular, to a method, device, storage medium and electronic device for processing optical layer signals. Background Art

[0002] In OTN management and control (Optical Transport Network), maintenance signals serve as the underlying implementation basis for operation and maintenance and can be applied to multiple operation and maintenance scenarios.

[0003] In the related technologies, the insertion of electrical layer maintenance signals is channel-by-channel insertion, which is a mature technology and widely used. However, there are some problems with the insertion of optical layer maintenance signals. For example, in the existing optical layer overhead solution, the overhead is not transmitted along the channel and needs to be transmitted and processed through a dedicated OSC (Optical Supervisory Channel, responsible for transmitting network management, public affairs and monitoring information of the DWDM system). The transmission and processing process is highly complex and the effect is poor.

[0004] In the related technology, the operation and maintenance information of the optical layer signal can only be transmitted non-path-by-path, which leads to high complexity in the transmission and processing process. No effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present application provide a method, device, storage medium and electronic device for processing optical layer signals, so as to at least solve the problem in the related art that the operation and maintenance information of optical layer signals can only be transmitted non-path-by-path, thereby resulting in high complexity in the transmission processing process.

[0006] According to an embodiment of the present application, a method for processing an optical layer signal is provided, including: modulating a wide-spectrum light source to generate a first signal, wherein the first signal is a wide-spectrum light source signal carrying modulation information; selecting a specific first signal according to fill wave processing requirements, inserting all / part of the spectrum of the specific first signal into the optical path system to fill the idle spectrum on the optical path; and detecting the modulation information at a downstream optical signal detection point to obtain the modulation information inserted by the upstream first signal.

[0007] In an exemplary embodiment, modulating a broadband light source to generate a first signal includes: acquiring the broadband light source; and modulating the broadband light source according to a modulation method to obtain the first signal.

[0008] In an exemplary embodiment, modulating a broadband light source to generate a first signal includes: acquiring the broadband light source; and modulating the broadband light source according to a filtering method to form a characteristic waveform to obtain the first signal.

[0009] In an exemplary embodiment, all / part of the spectrum of the specific first signal is inserted into the optical path system to fill the idle spectrum on the optical path, including: selecting a second signal, wherein the second signal is a specific first signal representing a service unloaded scenario; when cross-scheduling wavelength signals, inserting all / part of the spectrum of the second signal into the spare spectrum outside the normal wavelength signal in the line optical signal.

[0010] In an exemplary embodiment, all / part of the spectrum of the specific first signal is inserted into the optical path system to fill the idle spectrum on the optical path, including: selecting a third signal, wherein the third signal is a specific first signal representing a service failure scenario; and in the event that a current line signal of the line fails, replacing the current line signal as a whole with the third signal.

[0011] In an exemplary embodiment, modulation information is detected at a downstream optical signal detection point to obtain modulation information inserted into an upstream first signal, including: when the downstream optical signal detection point is a non-OCH termination position detection point, optical signal detection containing single or multiple wavelength information is performed; the acquisition of the modulation information inserted into the upstream first signal includes: determining whether one or more of the following information exists in the optical signal: the specific first signal, as well as signal type information, modulation signal frequency, and occupied spectrum information.

[0012] In an exemplary embodiment, modulation information is detected at a downstream optical signal detection point to obtain modulation information inserted into an upstream first signal, including: when the downstream optical signal detection point is an OCH termination position detection point, optical signal detection of a single wavelength information is performed; the acquisition of the modulation information inserted into the upstream first signal includes: determining whether one or more of the following information exists in the optical signal: the specific first signal, signal type information, modulation signal frequency, occupied spectrum information, a second signal, and a third signal; wherein the second signal is a specific first signal representing a service unloaded scenario, and the third signal is a specific first signal representing a service failure scenario.

[0013] According to another embodiment of the embodiment of the present application, a processing device for an optical layer signal is also provided, including: a modulation light source module, which modulates a wide-spectrum light source to generate a first signal, wherein the first signal is a wide-spectrum light source signal carrying modulation information; a filling processing module, which selects a specific first signal according to the filling wave processing requirements, and inserts all / part of the spectrum of the first signal into the optical path system to fill the idle spectrum on the optical path; and a modulation detection module, which detects the modulation information at a downstream optical signal detection point to obtain the modulation information inserted by the upstream first signal.

[0014] According to another aspect of the embodiment of the present application, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored program, wherein the program executes the method for processing optical layer signals as described in the above claims when running.

[0015] According to another aspect of the embodiment of the present application, there is also provided an electronic device, including a memory and a processor, characterized in that a computer program is stored in the memory, and the processor is configured to execute the above-mentioned method for processing optical layer signals through the computer program.

[0016] In an embodiment of the present application, a wide-spectrum light source is modulated to generate a first signal, wherein the first signal is a wide-spectrum light source signal carrying modulation information; according to fill wave processing requirements, a specific first signal is selected, and all / part of the spectrum of the specific first signal is inserted into the optical path system to fill the idle spectrum on the optical path; the modulation information is detected at the downstream optical signal detection point to obtain the modulation information inserted by the upstream first signal. The above method solves the problem that the operation and maintenance information of the optical layer signal can only be transmitted non-path-by-path, which leads to high complexity in the transmission processing process. The above method achieves the goal of simplifying the complexity of the optical layer signal transmission processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0018] Figure 1 It is a schematic diagram of the hardware environment of a terminal device of a method for processing an optical layer signal according to an embodiment of the present invention;

[0019] Figure 2 is a flow chart of a method for processing an optical layer signal according to an embodiment of the present invention;

[0020] Figure 3 is a flow chart of a method for processing an optical layer signal according to a first embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of a first signal generating device according to an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of a method for processing an optical layer signal according to an embodiment of the present invention;

[0023] Figure 6 is a flow chart of a method for processing an optical layer signal according to a second embodiment of the present invention;

[0024] Figure 7 is a flow chart of a method for processing an optical layer signal according to a third embodiment of the present invention;

[0025] Figure 8 is a schematic diagram of a method for processing an optical layer signal according to an embodiment of the present invention;

[0026] Fig. 9 is a flow chart of a method for processing an optical layer signal according to a fourth embodiment of the present invention;

[0027] Fig.10 is a schematic diagram of a method for processing an optical layer signal according to another embodiment of the present invention;

[0028] Fig.11 is a flow chart of a method for processing an optical layer signal according to a fifth embodiment of the present invention;

[0029] Fig.12 is a flow chart of a method for processing an optical layer signal according to a sixth embodiment of the present invention;

[0030] Fig.13 is a flow chart of a method for processing an optical layer signal according to a seventh embodiment of the present invention;

[0031] Fig.14 is a schematic diagram of a device for processing optical layer signals according to an embodiment of the present invention;

[0032] Fig.15 It is a schematic diagram of a method for processing optical layer signals according to another embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] According to one aspect of an embodiment of the present application, a method for processing an optical layer signal is provided. The method for processing an optical layer signal can be executed in a terminal device or a similar computing device, for example, running on a terminal device. Figure 1 FIG. 1 is a hardware structure block diagram of a terminal device of an optical layer signal processing method according to an embodiment of the present invention. Figure 1 As shown, the terminal device may include one or more ( Figure 1 Only one is shown in the figure) processor 102 (processor 102 may include but is not limited to a microprocessor (Microprocessor Unit, referred to as MPU) or a programmable logic device (Programmable logic device, referred to as PLD)) and a memory 104 for storing data. In an exemplary embodiment, the terminal device may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is for illustration only and does not limit the structure of the above terminal device. Figure 1 More or fewer components as shown, or with Figure 1 Equivalent functions or comparisons shown Figure 1 A different configuration with more features is shown.

[0036] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the exposure dotting method of the scrolling element in the edge area of ​​the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the terminal device via a network. Examples of the above network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0037] The transmission device 106 is used to receive or send data via a network. The above-mentioned specific examples of the network may include a network connection provided by a communication provider. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can communicate with other network devices by connecting to other network devices. In one example, the transmission device 106 can be a physical network port optical port or electrical port, which can communicate with other network devices through an optical fiber or network cable connection.

[0038] In OTN management and control, maintenance signals such as AIS / LCK / OCI (electrical layer) FDI / RDI (optical layer) serve as the underlying implementation basis for operation and maintenance and can be applied to multiple operation and maintenance scenarios. However, since the optical layer maintenance signal cannot be directly transmitted along the path, it has not been widely used. The embodiment of the present invention utilizes the fill wave technology used in the C+L system to modulate the fill wave to achieve the definition of the optical layer maintenance signal, which can better meet the operation and maintenance requirements.

[0039] In the related technologies, the current electrical layer maintenance signal insertion is channel-by-channel insertion, which is a mature technology and widely used. However, there are some problems with the optical layer maintenance signal insertion. For example, the existing optical layer overhead solution is non-channel-by-channel transmission and needs to be transmitted and processed through a dedicated OSC channel. It is highly complex and has poor effects, and has not been promoted for large-scale practical application.

[0040] In order to solve the above technical problems, a method for processing optical layer signals is provided in this embodiment, which can be applied to the above terminal device or configured in a server. The terminal device can be a PC or a mobile terminal. This embodiment of the application does not limit this. Figure 2 1 is a flow chart of a method for processing an optical layer signal according to an embodiment of the present invention, the flow chart comprising the following steps:

[0041] S220, modulate the broadband light source to generate a first signal, wherein the first signal is a broadband light source signal carrying modulation information.

[0042] The wide spectrum light source includes a noise light source. For example, the noise light source includes a white noise light source, wherein the white noise light source refers to a light source whose spectrum of light is uniformly distributed in the entire visible light range. The white noise light source contains light waves of various frequencies, and the intensity of the light waves of various frequencies is roughly equal.

[0043] In one embodiment of the present application, the white noise light source may be modulated based on different modulation modes to generate a recognizable maintenance signal, ie, a first signal.

[0044] S240, according to the fill wave processing requirement, select a specific first signal, insert all / part of the spectrum of the specific first signal into the optical path system, and fill the idle spectrum on the optical path.

[0045] In an embodiment of the present application, when a first signal is generated, a specific first signal is generated based on a fill wave processing requirement. For example, taking the first signal as a fill wave signal, when a fill wave signal is generated, the fill wave signal is modified so that the fill wave signal carries additional information to generate a specific fill wave maintenance signal. It can be understood that the process of modulating a wide spectrum light source to generate a first signal can be understood as a process of adding additional information to the fill wave signal. And according to different insertion requirements, a maintenance signal carrying different information can be generated.

[0046] It should be further explained that the implementation of step S240 can be understood as using different modulation signals according to different filling wave processing requirements. However, the modulation signal generation method is consistent, and modulation is performed for a wide-spectrum light source. When the filling wave is inserted at different positions, the difference in the position can be reflected in the modulation information, so the modulation content format will be slightly different. These different signals can be the specific first signal described in the above embodiment.

[0047] In an embodiment of the present application, when a specific first signal is selected, based on different types of the specific first signal, different ways of inserting all / part of the spectrum of the specific first signal into the optical path system are implemented to fill the idle spectrum on the optical path.

[0048] S260: Detect modulation information at a downstream optical signal detection point to obtain modulation information inserted into the upstream first signal.

[0049] In an embodiment of the present application, it can be determined whether the downstream optical signal detection point is a non-OCH (Opital Channel, referred to as optical channel) termination position detection point. When it is determined that the downstream optical signal detection point is a non-OCH termination position detection point, optical signal detection based on single or multiple wavelength information can be used to obtain the modulation information inserted into the upstream first signal.

[0050] According to the method for processing optical layer signals of the embodiment of the present application, a wide-spectrum light source is modulated to generate a first signal, wherein the first signal is a wide-spectrum light source signal carrying modulation information. According to the fill wave processing requirements, a specific first signal is selected, and all / part of the spectrum of the specific first signal is inserted into the optical path system to fill the idle spectrum on the optical path. The modulation information is detected at the downstream optical signal detection point to obtain the modulation information inserted by the upstream first signal. The problem that the operation and maintenance information of the optical layer signal can only be transmitted non-path-by-path, which leads to high complexity in the transmission processing process, is solved. The above method simplifies the complexity of the optical layer signal transmission processing process.

[0051] In order to make it easier for those skilled in the art to understand the present application, the following embodiments are specific implementations of modulating a wide-spectrum light source to generate a first signal:

[0052] In the embodiment of the present application, when the top adjustment method is adopted, Figure 3 As shown, the broadband light source is modulated to generate a first signal, including:

[0053] S2202, obtaining a broadband light source.

[0054] S2204: modulate the wide-spectrum light source according to a modulation method to obtain a first signal.

[0055] In an embodiment of the present application, the first signal may be obtained based on the first signal generating device, for example, Figure 4 As shown, the first signal generating device includes a transmitting module and a modulating module, wherein the transmitting module and the modulating module can be a whole, that is, the first signal generating device, or can exist as two independent modules. The transmitting module can transmit the acquired wide-spectrum light source to the modulating module, so that the modulating module modulates the wide-spectrum light source to obtain a maintenance signal.

[0056] In the embodiments of the present application, when the broadband light source is modulated by the top modulation method, the broadband light source can be modulated based on the ordinary OA plus a fast VOA (Variable Optical Attenuator, fiber modulator) modulation unit; SOA (Semiconductor Optical Amplifier, semiconductor optical amplifier) ​​can also be used as an additional light source to modulate the broadband light source, wherein SOA supports direct modulation of the broadband light source without the need for a separate external modulator. It should be noted that for a hybrid light source with protection, such as Figure 5 As shown, a synchronization signal needs to be provided to ensure that the top modulation signals generated by the multiple first signal light sources are aligned, and can still be detected and identified normally after mixing. Figure 5 The multiple first signal light sources are consistent, and the modulation information is also consistent. The synchronization signal is used to achieve consistency of the multiple first signal light sources and the modulation information.

[0057] Among them, the fast VOA modulation unit is usually composed of an electro-optic modulator and a control circuit. The electro-optic modulator changes the phase of light by introducing an electric field in the optical fiber, thereby adjusting the intensity of the optical signal. The control circuit quickly adjusts the working state of the electro-optic modulator according to the input control signal, thereby achieving rapid adjustment of the optical signal.

[0058] In the embodiment of the present application, when the top modulation method is used to modulate the wide-spectrum light source, the top modulation frequencies of different OCH top modulation signals in the normal OCH top modulation signal are different, and the top modulation information of the OCH can be determined by frequency distinction. The maintenance signal is uniformly generated based on the wide-spectrum light source for convenience, and the modulation will not be affected by the specific OCH division of the system. Therefore, the top modulation of the maintenance signal does not distinguish between OCH channels, all wavelengths are in a unified format, and a specific frequency is fixed to distinguish the top modulation signals of different frequencies corresponding to different OCHs of the frequency division.

[0059] Among them, in the wavelength division multiplexing system, a small amplitude low-frequency modulation signal is superimposed on each wavelength at the transmitting end as an identifier, and different wavelengths are identified by different frequencies. When this low-frequency modulation signal is superimposed on the optical wavelength, there is a modulation amplitude at the top of the optical wavelength, so it is called an OCH top modulation signal.

[0060] In the embodiment of the present application, when filtering is used to form a characteristic waveform, as shown in FIG. Figure 6 As shown, the broadband light source is modulated to generate a first signal, including:

[0061] S2206, obtaining a broadband light source.

[0062] In the embodiments of the present application, the embodiments of S2206 may refer to the embodiments of S2202 described above, and the present application will not elaborate on them.

[0063] S2208, modulate the wide-spectrum light source according to the characteristic waveform formed by filtering to obtain a first signal.

[0064] In the embodiment of the present application, when the wide-spectrum light source is modulated by filtering to form a characteristic waveform, the overall signal of the current line is filtered to form a characteristic specific spectrum to generate a fill wave signal. Among them, the filter device can be determined to form a characteristic waveform. For example, Fig.15 As shown, a separate periodic filter device is used to form waveforms with different duty cycles and frequencies; another example is the use of WSS (Wavelength Selective Switch, an optical switch device in an optical communication network) to construct the characteristics of an abnormal business waveform on the signal of a wide-spectrum light source.

[0065] In the embodiment of the present application, when a wide-spectrum light source is modulated by filtering to form a characteristic waveform, a common OA with an additional filter can be used to form a characteristic waveform signal, and distinguish the characteristic waveform signal from a signal of a normal channel spectrum type. For example, the distinguishing method includes a specific filtering shape of a periodic or non-periodic type, a specific frequency, a specific duty cycle, etc.

[0066] It should be noted that compared with the top modulation method, the filtering method to form a characteristic waveform does not have a complex optical layer OAM (Optical Add / Drop Multiplexer, a device in the optical fiber transmission system) frame structure definition, does not contain specific optical layer OAM information, and can only be distinguished and identified through characteristic information such as specific filtering shape, specific frequency, and specific duty cycle. Generally, the characteristic waveform is slower to detect than the optical label, and has certain requirements for the OPM (Optical Power Meter, a spectrum measurement device in the optical communication network) board or optical module.

[0067] Among them, optical layer OAM is an in-band monitoring technology that monitors single-channel information by loading low-frequency (MHz) modulation (pilot tone) on high-speed (GHz or above) optical wavelengths. Using frequency division technology, different modulation pilot tones are loaded on different wavelengths to monitor multiple channels. The low-frequency information can be extracted at any detection point on the optical path in a low-cost direct detection manner. Through low-frequency modulation, channel information with corresponding content can be loaded to indicate the characteristics of the channel (such as central wavelength, service rate, source and destination address, etc.). This information is combined into a certain frame format, that is, the optical layer OAM overhead is formed. Optical signal top modulation technology is also called optical label technology.

[0068] Among them, the OPM board supports spectral scanning and obtains spectral information. For example, the high-precision OPM board can discover the characteristics of the waveform and realize the detection of characteristic waveform signals.

[0069] In order to make it easier for those skilled in the art to understand the present application, the following embodiments are specific implementation methods for inserting all / part of the spectrum of a specific first signal into the optical path system to fill the idle spectrum on the optical path when a specific first signal is selected:

[0070] In one embodiment of the present application, Figure 7 As shown, inserting all / part of the spectrum of the specific first signal into the optical path system to fill the idle spectrum on the optical path includes:

[0071] S2402, selecting a second signal, wherein the second signal is a specific first signal representing a scenario in which the service is not loaded;

[0072] S2404: When cross-scheduling the wavelength signal, insert all / part of the spectrum of the second signal into the spare spectrum outside the normal wavelength signal in the line optical signal.

[0073] In the embodiments of the present application, Figure 8 As shown in the figure, when WSS is used to schedule wavelength signals, the client side inputs normal service signals and fill-wave maintenance signals. Through the cross-scheduling of WSS, the spare spectrum outside the normal wavelength signal is filled with the second signal (equivalent to Figure 8 The filling wave maintenance signal in the filling wave maintenance signal) is obtained to obtain the line signal after filling (equivalent to Figure 8 The filled line mixed spectrum signal in the middle), wherein the filling wave maintenance signal can select a special type, for example, inserting the OCI filling wave maintenance signal. Thus, when the local service is not loaded on the road or the optical cross-connection is deleted, the line side is replaced with the filling wave to realize the insertion of the OCI filling wave maintenance signal.

[0074] In another embodiment of the present application, Fig. 9 As shown, inserting all / part of the spectrum of the specific first signal into the optical path system to fill the idle spectrum on the optical path includes:

[0075] S2406, in the case of selecting the specific first signal, selecting a third signal, wherein the third signal is the specific first signal representing the service failure scenario;

[0076] S2408: When a current line signal of the line fails, the current line signal is entirely replaced with a third signal.

[0077] In the embodiments of the present application, Fig.10 As shown, the current line signal of the line fails (equivalent to Fig.10 In the case of a LOS alarm in the Fig.10 The filling wave maintenance signal in the optical communication network) is used to access the line signal through the working channel of OP (Optical Protection, optical path protection switching equipment in optical communication networks), and the protection channel accesses the FDI (Forward Defect Indication, forward fault indication) filling wave maintenance signal. When the working channel is detected to have no signal, it switches to the protection channel. Therefore, in the line fault scenario, the fault signal is replaced with the FDI filling wave maintenance signal, which is convenient for the subsequent site that supports the optical layer maintenance signal to process.

[0078] The above-mentioned implementation method of inserting all / part of the spectrum of a specific first signal into the optical path system to fill the idle spectrum on the optical path is divided according to business scenarios and from the perspective of device processing. Different devices are processed differently, so that wavelength-level replacement is performed through WSS and overall line service replacement is performed through OP.

[0079] Based on the technical solution of the embodiment of the present invention, the occupied spectrum range in the C+L system is wider, and the problem of short-wavelength power transfer to long-wavelength caused by the SRS effect in the optical fiber cannot be ignored. Therefore, increasing or decreasing wavelengths will have an impact on existing services. In the current C+L system, the industry's usual practice is to use fill channels to keep the system fully equipped at all times, and adopt the idea of ​​"mutual replacement of true waves / fill waves" for power balancing and control, so as to solve the impact of increasing or decreasing wavelengths on the quality of existing services in actual service addition and deletion scenarios. For service addition and deletion scenarios, fill waves are usually added on the customer side, entering wavelength scheduling units such as WSS to fill in wavelengths that are not configured for on-road services. For line fault scenarios, it is necessary to fill the entire band with fill waves after the fault occurs to avoid affecting subsequent wavelength scheduling. It can be directly replaced with fill waves, or it can trigger switching to fill wave signals.

[0080] The following embodiment is a specific implementation method of detecting modulation information at a downstream optical signal detection point to obtain the modulation information inserted into the upstream first signal:

[0081] In one embodiment of the present application, Fig.11 As shown, modulation information is detected at the downstream optical signal detection point to obtain the modulation information inserted into the upstream first signal, including:

[0082] S2602: When the downstream optical signal detection point is not an OCH termination position detection point, perform optical signal detection containing single or multiple wavelength information.

[0083] In an embodiment of the present application, for the intermediate line detection point, there may be multiple optical signals for fill wave maintenance signals. Since the definition of the fill wave maintenance signal is unified, it is impossible to distinguish which wavelength the maintenance signal is. Overall, it can only be determined whether there is an optical label with the fill wave maintenance signal frequency in a single or multiple wavelengths, that is, whether there is an OCH optical channel layer signal of maintenance status in the single or multiple wavelength information, but it is impossible to determine which specific wavelength is replaced by the fill wave maintenance signal, so only one status can be reported uniformly. Moreover, although the frequencies of optical signals from different sources are set to the same, they will still interfere with each other, making it difficult to parse the optical label frame structure, and may only be simply distinguished by frequency. In short, the OTU receiving optical module can obtain relatively complete information, while the optical signal detection of the intermediate node can only simply determine whether there are maintenance signals on certain wavelengths in the existing optical service based on the frequency.

[0084] S2604: Acquire modulation information inserted into the upstream first signal.

[0085] In an embodiment of the present application, obtaining the modulation information inserted into the upstream first signal includes determining whether one or more of the following information exists in the optical signal: a specific first signal, as well as signal type information, modulation signal frequency, and occupied spectrum information.

[0086] In another embodiment of the present application, Fig.12 As shown, modulation information is detected at the downstream optical signal detection point to obtain the modulation information inserted into the upstream first signal, including:

[0087] S2606: When the downstream optical signal detection point is an OCH termination position detection point, optical signal detection of single wavelength information is performed.

[0088] In an embodiment of the present application, based on the detection of the fill wave maintenance signal in the top modulation manner, a detection device for the top modulation optical signal can be used to detect the fill wave maintenance signal, wherein the optical label can be detected on the line, and can also be detected at the detection point of the OCH termination position, that is, the OTU board at the OCH termination position is detected, wherein the detection of the OTU board at the OCH termination position is relatively simple, because there is only a single service wavelength, and only the optical label of the single wavelength information needs to be detected, so the receiving optical module of the OTU board can directly detect and extract the optical label information, that is, the receiving optical module of the OTU board can directly detect to extract the modulation information inserted by the upstream first signal.

[0089] S2608: Obtain modulation information inserted into the upstream first signal.

[0090] In an embodiment of the present application, the modulation information inserted into the upstream first signal is obtained, including determining whether one or more of the following information exists in the optical signal: a specific first signal, signal type information, modulation signal frequency, occupied spectrum information, a second signal and a third signal; wherein the second signal is a specific first signal representing a service unloaded scenario, and the third signal is a specific first signal representing a service failure scenario.

[0091] In an embodiment of the present application, when detecting the optical layer OAM performance information of a specific wavelength, the priority of the fill wave is higher than the priority of the normal optical label, and it is necessary to first determine whether it is a fill wave signal. If it is not a fill wave signal, the wavelength-specific optical layer OAM information is extracted according to the specific frequency corresponding to the specific wavelength.

[0092] In one embodiment of the present application, Fig.13 As shown, the detection of the fill wave maintenance signal includes: extracting the optical label information, and judging whether it is a maintenance signal according to the optical label information, and performing normal optical label processing when it is determined that it is not a maintenance signal, and reporting a maintenance signal alarm when it is determined that it is a maintenance signal. Among them, normal optical label processing can be understood as identifying and processing the normal optical label signal in the optical fiber communication to realize the existing optical label function. Among them, since the optical labels of the maintenance signal are all of special frequencies, they can be distinguished by frequency and specific label content, that is, judging whether it is a maintenance signal according to the optical label information.

[0093] In a specific embodiment of the present application, the detection of the fill wave maintenance signal is implemented based on the top adjustment method. For example, the normal wavelengths 1 to n correspond to the frequencies f_1 to f_n of the modulation information, and the fill wave maintenance signal corresponds to the frequencies f_oci and f_fdi of the modulation information. At the intermediate node, after the f_oci and f_fdi frequencies are monitored, the reported service contains the OCI / FDI maintenance signal. The abnormal optical signal set can be obtained in combination with the site optical service configuration (all configured wavelengths) and the current normal optical signal, and the specific wavelength carrying the fill wave maintenance signal is further located. At the OTU port where the OCH terminates, specific OCI and FDI alarm signals can be reported directly; for another example, the normal wavelengths 1 to n correspond to the frequencies f_1 to f_n of the modulation information, and the fill wave maintenance signal corresponds to the frequency f_mnt of the modulation information, which is distinguished as OCI / FDI information in the OAM frame. At the intermediate node, after monitoring the f_mnt frequency, the MNT maintenance signal alarm in the service is reported. The abnormal optical signal set can be obtained by combining the site optical service configuration (all configured wavelengths) and the current normal optical signal, and the specific wavelength carrying the fill wave maintenance signal can be further located. At the OTU port where the OCH is terminated, the specific OCI and FDI alarm signals can be directly reported based on the parsed OAM frame content.

[0094] In another specific embodiment of the present application, the detection of the fill wave maintenance signal is realized based on the site detection method. For example, different sites can select different frequencies when inserting f_fdi, and the frequency value corresponds to the site ID one by one. Then, the frequency value can be used to distinguish which site has discovered the fault and replaced the fill wave maintenance signal; for example, when different sites insert f_fdi, the fault location information can be filled in the optical layer OAM frame definition, but it can only be identified and reported at the OTU port where the OCH is terminated.

[0095] In another specific embodiment of the present application, the detection of the fill wave maintenance signal is implemented based on a specific waveform. For example, WSS is used for filtering, the normal signal has a spectrum width of at least 50G, and the WSS resolution can achieve 6.25G frequency gap control, so the fill wave maintenance signal can be modified to form a specific waveform. OCI and FDI alarms correspond to different specific waveforms. Using a high-precision OPM board for monitoring, the alarms existing in the channel can be confirmed. Using a customized DSP, it can also be identified and reported at the OTU port where the OCH is terminated.

[0096] In the prior art, in a non-fill wave system, when the service is not on the road or the downstream does not receive the optical signal after the interruption, it is necessary to distinguish between the overhead and the payload, which is a non-path-associated optical layer overhead implementation solution. Through the technical solution of the embodiment of the present invention, for the C+L system, when the fill wave must be configured, it can be converted into a path-associated overhead through an optical label at a low cost, which simplifies the difficulty of processing the optical layer overhead and provides richer operation and maintenance functions.

[0097] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of each embodiment of the present application.

[0098] Fig.14 is a structural block diagram of an optical layer signal processing device according to an embodiment of the present application; Fig.14 As shown, including:

[0099] The modulated light source module 1420 modulates the broadband light source to generate a first signal, where the first signal is a broadband light source signal carrying modulation information;

[0100] The filling processing module 1440 selects a specific first signal according to the filling wave processing requirement, and inserts all / part of the spectrum of the first signal into the optical path system to fill the idle spectrum on the optical path;

[0101] The modulation detection module 1460 detects modulation information at a downstream optical signal detection point to obtain the modulation information inserted into the upstream first signal.

[0102] Through the above device, the wide-spectrum light source is modulated to generate a first signal, wherein the first signal is a wide-spectrum light source signal carrying modulation information. According to the fill wave processing requirements, a specific first signal is selected, and all / part of the spectrum of the specific first signal is inserted into the optical path system to fill the idle spectrum on the optical path. The modulation information is detected at the downstream optical signal detection point to obtain the modulation information inserted by the upstream first signal. The problem that the operation and maintenance information of the optical layer signal can only be transmitted non-path-by-path, which leads to high complexity in the transmission processing process, is solved. The above method simplifies the complexity of the optical layer signal transmission processing process.

[0103] In an exemplary embodiment, the modulated light source module 1420 is used to obtain the broadband light source; and modulate the broadband light source according to a modulation method to obtain the first signal.

[0104] In an exemplary embodiment, the modulated light source module 1420 is used to obtain the broadband light source; and modulate the broadband light source according to a characteristic waveform formed by filtering to obtain the first signal.

[0105] In an exemplary embodiment, the filling processing module 1440 is used to select a second signal, wherein the second signal is a specific first signal representing a service unloaded scenario; when cross-scheduling the wavelength signal, the spare spectrum outside the normal wavelength signal in the line optical signal is inserted into all / part of the spectrum of the second signal.

[0106] In an exemplary embodiment, the filling processing module 1440 is used to select a third signal, wherein the third signal is a specific first signal representing a service failure scenario; when a current line signal of a line fails, the current line signal is entirely replaced with the third signal.

[0107] In an exemplary embodiment, the modulation detection module 1460 is used to perform optical signal detection containing single or multiple wavelength information when the downstream optical signal detection point is a non-OCH termination position detection point; the acquisition of the modulation information inserted into the upstream first signal includes: determining whether one or more of the following information exists in the optical signal: the specific first signal, as well as signal type information, modulation signal frequency, and occupied spectrum information.

[0108] In an exemplary embodiment, the modulation detection module 1460 is used to perform optical signal detection of single wavelength information when the downstream optical signal detection point is an OCH termination position detection point; the acquisition of the modulation information inserted into the upstream first signal includes: determining whether one or more of the following information exists in the optical signal: the specific first signal, signal type information, modulation signal frequency, occupied spectrum information, a second signal and a third signal; wherein the second signal is a specific first signal representing a service unloaded scenario, and the third signal is a specific first signal representing a service failure scenario.

[0109] Optionally, in this embodiment, the storage medium may be configured to store program codes for executing the following steps:

[0110] S1, modulating a wide-spectrum light source to generate a first signal, wherein the first signal is a wide-spectrum light source signal carrying modulation information;

[0111] S2, according to the fill wave processing requirement, select a specific first signal, insert all / part of the spectrum of the specific first signal into the optical path system, and fill the idle spectrum on the optical path;

[0112] S3, detecting modulation information at a downstream optical signal detection point to obtain modulation information inserted into the upstream first signal.

[0113] An embodiment of the present application further provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0114] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0115] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0116] S1, modulating a wide-spectrum light source to generate a first signal, wherein the first signal is a wide-spectrum light source signal carrying modulation information;

[0117] S2, according to the fill wave processing requirement, select a specific first signal, insert all / part of the spectrum of the specific first signal into the optical path system, and fill the idle spectrum on the optical path;

[0118] S3, detecting modulation information at a downstream optical signal detection point to obtain modulation information inserted into the upstream first signal.

[0119] An embodiment of the present application further provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0120] Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store program codes.

[0121] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be described in detail here.

[0122] Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order from that herein, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0123] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for processing optical layer signals, characterized in that: include: Modulating a wide-spectrum light source to generate a first signal, wherein the first signal is a wide-spectrum light source signal carrying modulation information; According to the fill wave processing requirements, a specific first signal is selected, and all / part of the spectrum of the specific first signal is inserted into the optical path system to fill the idle spectrum on the optical path; The modulation information is detected at the downstream optical signal detection point to obtain the modulation information inserted into the upstream first signal.

2. The method according to claim 1, characterized in that Modulating a broadband light source to generate a first signal includes: Acquire the broadband light source; The broadband light source is modulated according to a modulation method to obtain the first signal.

3. The method according to claim 1, characterized in that Modulating a broadband light source to generate a first signal includes: Acquire the broadband light source; The broadband light source is modulated according to a characteristic waveform formed by filtering to obtain the first signal.

4. The method according to claim 1, characterized in that Inserting all or part of the spectrum of the specific first signal into the optical path system to fill the idle spectrum on the optical path, including: Selecting a second signal, wherein the second signal is a specific first signal representing a scenario where the service is not loaded; When cross-scheduling the wavelength signals, the spare spectrum outside the normal wavelength signal in the line optical signal is inserted into the whole / part of the spectrum of the second signal.

5. The method according to claim 1, characterized in that Inserting all or part of the spectrum of the specific first signal into the optical path system to fill the idle spectrum on the optical path, including: Selecting a third signal, wherein the third signal is a specific first signal representing a service failure scenario; When a current line signal of a line fails, the current line signal is entirely replaced by the third signal.

6. The method according to claim 1, characterized in that Modulation information is detected at the downstream optical signal detection point to obtain the modulation information inserted into the upstream first signal, including: When the downstream optical signal detection point is a non-OCH termination position detection point, performing optical signal detection containing single or multiple wavelength information; The acquiring the modulation information inserted into the upstream first signal includes: Determine whether one or more of the following information exists in the optical signal: the specific first signal, as well as signal type information, modulation signal frequency, and occupied spectrum information.

7. The method according to claim 1, characterized in that Modulation information is detected at the downstream optical signal detection point to obtain the modulation information inserted into the upstream first signal, including: When the downstream optical signal detection point is an OCH termination position detection point, performing optical signal detection of single wavelength information; The acquiring the modulation information inserted into the upstream first signal includes: Determine whether one or more of the following information exists in the optical signal: the specific first signal, signal type information, modulation signal frequency, occupied spectrum information, a second signal, and a third signal; wherein the second signal is a specific first signal representing a service unloaded scenario, and the third signal is a specific first signal representing a service failure scenario.

8. A device for processing optical layer signals, characterized in that: include: A modulation light source module modulates the wide-spectrum light source to generate a first signal, wherein the first signal is a wide-spectrum light source signal carrying modulation information; A filling processing module selects a specific first signal according to the filling wave processing requirements, inserts all / part of the spectrum of the first signal into the optical path system, and fills the idle spectrum on the optical path; The modulation detection module detects modulation information at a downstream optical signal detection point to obtain the modulation information inserted into the upstream first signal.

9. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, wherein the computer program is configured to execute the method according to any one of claims 1 to 7 when executed.

10. An electronic device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the method according to any one of claims 1 to 7 through the computer program.

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