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

Abstract

Provided in the embodiments of the present disclosure are an optical layer signal processing method and apparatus, a storage medium and an electronic apparatus. The method comprises: modulating a broad-spectrum light source to generate first signals, wherein the first signals are broad-spectrum light source signals carrying modulation information; according to a filling wave processing requirement, selecting a specific first signal, and inserting all / part of the spectrum of the specific first signal into an optical path system, so as to fill an idle spectrum on the optical path; and performing modulation information detection at a downstream optical signal detection point, so as to acquire modulation information inserted by means of an upstream first signal. The technical solution solves the problems that operation and maintenance information of optical layer signals can only be transmitted in a non-associated manner and thus the complexity is high in the process of transmission processing. The method can reduce the complexity in the process of optical layer signal transmission processing.

Description

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

[0001] This disclosure claims priority to a Chinese patent application filed on June 30, 2023, with application number 2023108031793, entitled “Method, device, storage medium and electronic device for processing optical layer signals,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] The embodiments of the present disclosure 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

[0003] 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.

[0004] In related technologies, electrical layer maintenance signal insertion is channel-attached insertion, a mature and widely used technique. However, optical layer maintenance signal insertion currently faces some challenges. For example, existing optical layer overhead solutions do not transmit overhead in-line, requiring transmission and processing via a dedicated OSC (Optical Supervisory Channel), responsible for transmitting network management, official business, and monitoring information for DWDM systems. This process is highly complex and ineffective.

[0005] In related technologies, the operation and maintenance information of optical layer signals can only be transmitted non-path-attached, which leads to high complexity in the transmission and processing process. No effective solution has yet been proposed.

[0006] Summary of the Invention

[0007] The embodiments of the present disclosure provide a method, apparatus, storage medium, and electronic device for processing optical layer signals, to at least solve the problem in related technologies that operation and maintenance information of optical layer signals can only be transmitted non-along the channel, thereby resulting in high complexity in the transmission processing process.

[0008] According to one embodiment of the present disclosure, a method for processing optical layer signals 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.

[0009] According to another embodiment of the present disclosure, a device for processing optical layer signals 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 the downstream optical signal detection point to obtain the modulation information inserted by the upstream first signal.

[0010] According to another aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored program, wherein the program executes the optical layer signal processing method described in the above claims when running.

[0011] According to another aspect of the embodiments of the present disclosure, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the above-mentioned method for processing optical layer signals through the computer program.

[0012] In the disclosed embodiment, 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; based on 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 above method solves the problem that the operation and maintenance information of the optical layer signal can only be transmitted non-in-line, which leads to high complexity in the transmission processing process. The above method simplifies the complexity of the optical layer signal transmission processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0014] FIG1 is a schematic diagram of a hardware environment of a terminal device of a method for processing optical layer signals according to an embodiment of the present disclosure;

[0015] FIG2 is a flow chart of a method for processing optical layer signals according to an embodiment of the present disclosure;

[0016] FIG3 is a flow chart of a method for processing optical layer signals according to the first embodiment of the present disclosure;

[0017] FIG4 is a schematic diagram of a first signal generating device according to an embodiment of the present disclosure;

[0018] FIG5 is a schematic diagram of a method for processing optical layer signals according to an embodiment of the present disclosure;

[0019] FIG6 is a flowchart of a method for processing an optical layer signal according to a second embodiment of the present disclosure;

[0020] FIG7 is a flowchart of a method for processing an optical layer signal according to a third embodiment of the present disclosure;

[0021] FIG8 is a schematic diagram of a method for processing optical layer signals according to an embodiment of the present disclosure;

[0022] FIG9 is a flowchart of a method for processing an optical layer signal according to a fourth embodiment of the present disclosure;

[0023] FIG10 is a schematic diagram of a method for processing optical layer signals according to another embodiment of the present disclosure;

[0024] FIG11 is a flowchart of a method for processing an optical layer signal according to the fifth embodiment of the present disclosure;

[0025] FIG12 is a flowchart of a method for processing an optical layer signal according to a sixth embodiment of the present disclosure;

[0026] FIG13 is a flowchart of a method for processing an optical layer signal according to a seventh embodiment of the present disclosure;

[0027] FIG14 is a schematic diagram of an apparatus for processing optical layer signals according to an embodiment of the present disclosure;

[0028] FIG15 is a schematic diagram of a method for processing optical layer signals according to yet another embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solutions of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present disclosure.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure 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 numbers used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes 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.

[0031] According to one aspect of an embodiment of the present disclosure, a method for processing optical layer signals is provided. The method for processing optical layer signals can be executed in a terminal device or a similar computing device. Take running on a terminal device as an example. Figure 1 is a hardware structure block diagram of a terminal device for a method for processing optical layer signals according to an embodiment of the present disclosure. As shown in Figure 1, the terminal device may include one or more (only one is shown in Figure 1) processors 102 (the processor 102 may include but is not limited to a microprocessor (Microprocessor Unit, abbreviated as MPU) or a programmable logic device (Programmable logic device, abbreviated as PLD)) and a memory 104 configured to store data. In an exemplary embodiment, the terminal device may also include a transmission device 106 and an input / output device 108 configured to have a communication function. It will be understood by those skilled in the art that the structure shown in Figure 1 is merely illustrative and does not limit the structure of the terminal device. For example, the terminal device may also include more or fewer components than those shown in Figure 1, or have a different configuration with the same functions as those shown in Figure 1 or more functions than those shown in Figure 1.

[0032] The memory 104 can be configured 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 disclosure. 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-mentioned 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 instances, the memory 104 may further include a memory remotely located relative to the processor 102, and these remote memories may be connected to the terminal device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0033] The transmission device 106 is configured to receive or transmit data via a network. Specific examples of the aforementioned network may include a network connection provided by a telecommunications provider. In one embodiment, the transmission device 106 includes a network interface controller (NIC), which can communicate with other network devices by connecting to other network devices. In one embodiment, the transmission device 106 can be a physical network port, such as an optical or electrical port, that can communicate with other network devices via an optical fiber or network cable connection.

[0034] In OTN management and control, maintenance signals such as AIS / LCK / OCI (electrical layer) and FDI / RDI (optical layer) serve as the underlying implementation basis for O&M and can be applied to multiple O&M scenarios. However, since optical layer maintenance signals cannot be directly transmitted along the path, their use has not been widespread. The disclosed embodiment utilizes the fill wave technology used in the C+L system to modulate the fill wave to achieve the definition of optical layer maintenance signals, which can better meet O&M requirements.

[0035] Currently, the insertion of electrical layer maintenance signals is done via channel-attached insertion, a mature and widely used technology. However, the insertion of optical layer maintenance signals currently faces some challenges. For example, existing optical layer overhead solutions are not transmitted via channel-attached insertion but require dedicated OSC channels for transmission and processing. This complexity and poor performance have hindered widespread adoption.

[0036] To solve the above technical problems, a method for processing optical layer signals is provided in this embodiment. The method 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 present disclosure is not limited to this. Figure 2 is a flow chart of the method for processing optical layer signals according to an embodiment of the present disclosure, which includes the following steps:

[0037] S220 , modulate the broadband light source to generate a first signal, wherein the first signal is a broadband light source signal carrying modulation information.

[0038] The broad-spectrum light source includes a noise light source. For example, the noise light source includes a white noise light source. A white noise light source is a light source whose spectrum is uniformly distributed across the entire visible light range. A white noise light source contains light waves of various frequencies, and the intensity of the light waves of each frequency is approximately equal.

[0039] In one embodiment of the present disclosure, the white noise light source may be modulated based on different modulation modes to generate a recognizable maintenance signal, ie, a first signal.

[0040] S240 , according to fill-wave processing requirements, select a specific first signal, and insert all / part of the spectrum of the specific first signal into the optical path system to fill the idle spectrum on the optical path.

[0041] In the embodiments of the present disclosure, when generating a first signal, a specific first signal is generated based on fill-wave processing requirements. For example, taking the first signal as a fill-wave signal, when generating a fill-wave signal, the fill-wave signal is modified so that it carries additional information to generate a specific fill-wave maintenance signal. It can be understood that the process of modulating a broadband light source to generate the first signal can be understood as the process of adding additional information to the fill-wave signal. Furthermore, maintenance signals carrying different information can be generated based on different insertion requirements.

[0042] It should be further explained that the implementation of step S240 can be understood as using different modulation signals depending on different fill wave processing requirements. However, the modulation signal generation method is consistent, and both modulate the broadband light source. When inserting fill waves at different locations, the modulation information can reflect these differences in location, resulting in slightly different modulation content formats. These different signals can be the specific first signal described in the above embodiments.

[0043] In an embodiment of the present disclosure, 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.

[0044] S260: Detect modulation information at a downstream optical signal detection point to obtain modulation information inserted into the upstream first signal.

[0045] In an embodiment of the present disclosure, it is possible to determine 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, the modulation information inserted into the upstream first signal is obtained based on the optical signal detection of single or multiple wavelength information.

[0046] According to the method for processing optical layer signals of the embodiment of the present disclosure, a first signal is generated by modulating a wide-spectrum light source, 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. This solves the problem that the operation and maintenance information of the optical layer signal can only be transmitted non-in-line, which leads to high complexity in the transmission processing process. The above method simplifies the complexity of the optical layer signal transmission processing process.

[0047] To make it easier for those skilled in the art to understand the present disclosure, the following embodiments are optional implementations of modulating a broadband light source to generate a first signal:

[0048] In an embodiment of the present disclosure, when a top modulation method is adopted, as shown in FIG3 , a broadband light source is modulated to generate a first signal, including:

[0049] S2202, obtaining a broadband light source.

[0050] S2204: Modulate the broadband light source according to a modulation method to obtain a first signal.

[0051] In an embodiment of the present disclosure, a first signal can be obtained based on a first signal generating device. For example, as shown in FIG4 , the first signal generating device includes a transmitting module and a modulating module. The transmitting module and the modulating module can be integrated as a first signal generating device, or can exist as two independent modules. The transmitting module can transmit the acquired broadband light source to the modulating module, so that the modulating module modulates the broadband light source to obtain a maintenance signal.

[0052] In the embodiments of the present disclosure, when the top modulation method is used to modulate the wide-spectrum light source, the wide-spectrum light source can be modulated based on an ordinary OA plus a fast VOA (Variable Optical Attenuator, fiber modulator) modulation unit; or the SOA (Semiconductor Optical Amplifier, semiconductor optical amplifier) ​​can be used as an additional modulation of the light source to modulate the wide-spectrum light source, wherein the SOA supports direct modulation of the wide-spectrum light source without the need for a separate external modulator. It should be noted that for a hybrid light source with protection, as shown in FIG5 , a synchronization signal needs to be provided to ensure that the top modulation signals generated by multiple first signal light sources are aligned, and can still be detected and identified normally after mixing. Among them, the multiple first signal light sources in FIG5 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.

[0053] A fast VOA modulation unit typically consists of an electro-optical modulator (EOM) and a control circuit. The EO modulator modulates the optical signal's intensity by introducing an electric field into the optical fiber to alter the phase of light. The control circuit rapidly adjusts the EO modulator's operating state based on the input control signal, enabling rapid modulation of the optical signal.

[0054] In the embodiments of the present disclosure, when a broadband light source is modulated using a top-modulation method, the top-modulation frequencies of different OCH top-modulation signals within a normal OCH top-modulation signal differ, and frequency differentiation allows the identification of the OCH top-modulation information. For convenience, the maintenance signal is uniformly generated based on the broadband light source, and its modulation is unaffected by the specific OCH division of the system. Therefore, the top-modulation of the maintenance signal does not distinguish between OCH channels, but rather uses a unified format for all wavelengths and a fixed frequency, distinguishing between the different frequencies of the top-modulation signals corresponding to different OCHs in the frequency division.

[0055] In a wavelength division multiplexing system, a small low-frequency modulation signal is superimposed on each wavelength at the transmitter as an identifier. Different wavelengths are identified by different frequencies. When this low-frequency modulation signal is superimposed on the optical wavelength, it modulates the top of the optical wavelength with a certain amplitude, hence the name "OCH top modulation signal."

[0056] In an embodiment of the present disclosure, when filtering is used to form a characteristic waveform, as shown in FIG6 , a broadband light source is modulated to generate a first signal, including:

[0057] S2206, obtaining a broadband light source.

[0058] In the embodiments of the present disclosure, the embodiments of S2206 may refer to the embodiments of S2202 described above, and the present disclosure will not elaborate on them.

[0059] S2208: Modulate the wide-spectrum light source according to the characteristic waveform formed by filtering to obtain a first signal.

[0060] In the embodiment of the present disclosure, when a 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 filler wave signal. Among them, the filter device can be determined to form a characteristic waveform. For example, as shown in Figure 15, a separate periodic filter device is used to form a waveform with different duty cycles and frequencies; for example, a WSS (Wavelength Selective Switch, an optical switching device in an optical communication network) is used to construct the characteristics of an abnormal business waveform on the signal of the wide-spectrum light source.

[0061] In the embodiments of the present disclosure, when a broadband light source is modulated by filtering to form a characteristic waveform, a conventional OA with an external filter can be used to form a characteristic waveform signal and distinguish it from signals with normal channel spectrum patterns. Examples of such distinctions include specific filtering shapes, specific frequencies, and specific duty cycles, such as periodic or aperiodic.

[0062] It should be noted that, compared to the top modulation method, the filtering-based signature waveform method lacks the complex optical layer OAM (Optical Add / Drop Multiplexer, a device in optical fiber transmission systems) frame structure definition and does not contain specific optical layer OAM information. It can only be distinguished and identified based on characteristic information such as specific filtering shape, specific frequency, and specific duty cycle. Signature waveform detection is generally slower than that of optical labels, and requires certain OPM (Optical Power Meter, a spectrum measurement device in optical communication networks) boards or optical modules.

[0063] Optical layer OAM is an in-band monitoring technology that monitors single-channel information by adding low-frequency (MHz) modulation (pilot tone) to high-speed (GHz and above) optical wavelengths. Frequency division technology allows for the monitoring of multiple channels by adding different modulated pilot tones to different wavelengths. This low-frequency information can be directly detected at any point along the optical path using low-cost detection. Low-frequency modulation allows the addition of channel information, indicating the channel's characteristics (such as center wavelength, service rate, source / destination address, etc.). This information is combined into a specific frame format, forming the optical layer OAM overhead. Optical signal topping technology is also known as optical labeling.

[0064] 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.

[0065] To make it easier for those skilled in the art to understand the present disclosure, the following embodiments are optional implementations of inserting all or part of the spectrum of a specific first signal into an optical path system to fill the idle spectrum on the optical path when a specific first signal is selected:

[0066] In one embodiment of the present disclosure, as shown in FIG7 , inserting all or part of the spectrum of a specific first signal into the optical path system to fill the idle spectrum on the optical path includes:

[0067] S2402, selecting a second signal, wherein the second signal is a specific first signal representing a scenario in which the service is not loaded;

[0068] S2404 : When performing cross-scheduling on 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.

[0069] In an embodiment of the present disclosure, as shown in FIG8 , when WSS is used to schedule wavelength signals, the client side inputs a normal service signal and a filler wave maintenance signal. Through cross-scheduling by the WSS, the unused spectrum outside the normal wavelength signal is filled with a second signal (equivalent to the filler wave maintenance signal in FIG8 ), resulting in a filled line signal (equivalent to the filled line mixed spectrum signal in FIG8 ). The filler wave maintenance signal can be a special type, for example, an OCI filler wave maintenance signal. This allows the line side to replace the local service with a filler wave when the local service is not loaded or the optical cross-connect is deleted, thus inserting the OCI filler wave maintenance signal.

[0070] In another embodiment of the present disclosure, as shown in FIG9 , inserting all or part of the spectrum of a specific first signal into an optical path system to fill the idle spectrum on the optical path includes:

[0071] S2406, in the case where the specific first signal is selected, selecting a third signal, wherein the third signal is the specific first signal representing the service failure scenario;

[0072] S2408: When a current line signal of the line fails, the current line signal is entirely replaced with a third signal.

[0073] In an embodiment of the present disclosure, as shown in FIG10 , when a fault occurs in the current line signal of a line (equivalent to the LOS alarm in FIG10 ), the entire line of the current line signal needs to be replaced with a fill wave maintenance signal (equivalent to the fill wave maintenance signal in FIG10 ), that is, the working channel of OP (Optical Protection, an optical path protection switching device in an optical communication network) is used to access the line signal, and the protection channel is accessed to the FDI (Forward Defect Indication, forward fault indication) fill wave maintenance signal. When no signal is detected in the working channel, the protection channel is switched to the protection channel. Therefore, in a line fault scenario, the fault signal is replaced with the FDI fill wave maintenance signal, which facilitates processing by subsequent sites that support optical layer maintenance signals.

[0074] 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 also divided 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.

[0075] Based on the technical solutions of the embodiments of the present disclosure, the occupied spectrum range in the C+L system is wider, and the problem of power transfer from short wavelengths to long wavelengths 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 common practice is to use filler channels to keep the system fully equipped at all times, and adopt the idea of ​​"mutual replacement of true waves / filler 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, filler 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-line services. For line fault scenarios, it is necessary to fill the entire band with filler waves after the fault occurs to avoid affecting subsequent wavelength scheduling. It can be directly replaced with filler waves, or it can trigger switching to filler wave signals.

[0076] The following embodiments are optional implementations of detecting modulation information at a downstream optical signal detection point to obtain the modulation information inserted into the upstream first signal:

[0077] In one embodiment of the present disclosure, as shown in FIG11 , modulation information detection is performed at a downstream optical signal detection point to obtain modulation information inserted into an upstream first signal, including:

[0078] 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.

[0079] In the embodiment of the present disclosure, for the intermediate line detection point, there may be multiple optical signals for the fill wave maintenance signal. 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 judged 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 in the 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. Simply put, 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.

[0080] S2604: Acquire modulation information inserted into the upstream first signal.

[0081] In an embodiment of the present disclosure, 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.

[0082] In another embodiment of the present disclosure, as shown in FIG12 , modulation information is detected at a downstream optical signal detection point to obtain modulation information inserted into an upstream first signal, including:

[0083] S2606: When the downstream optical signal detection point is an OCH termination position detection point, perform optical signal detection of single wavelength information.

[0084] In the embodiment of the present disclosure, based on the detection of the fill wave maintenance signal in the top modulation mode, the fill wave maintenance signal can be detected by using a detection device for the top modulation optical 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. Among them, the detection of the OTU board at the OCH termination position is relatively simple. Since there is only a single service wavelength, only the optical label of the single wavelength information needs to be detected. Therefore, the receiving optical module of the OTU board can directly perform detection and extract the optical label information, that is, the receiving optical module of the OTU board can directly perform detection to extract the modulation information inserted by the upstream first signal.

[0085] S2608: Acquire modulation information inserted into the upstream first signal.

[0086] In an embodiment of the present disclosure, 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, 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.

[0087] In the embodiments of the present disclosure, when detecting the optical layer OAM performance information of a specific wavelength, the priority of the filler wave is higher than the priority of the normal optical label. It is necessary to first determine whether it is a filler wave signal. If it is not a filler wave signal, the wavelength-specific optical layer OAM information is extracted based on the specific frequency corresponding to the specific wavelength.

[0088] In one embodiment of the present disclosure, as shown in Figure 13, the detection of filler wave maintenance signals is implemented by extracting optical label information and determining whether it is a maintenance signal based on the optical label information. If it is determined not to be a maintenance signal, normal optical label processing is performed; if it is determined to be a maintenance signal, a maintenance signal alarm is reported. Normal optical label processing can be understood as identifying and processing normal optical label signals in optical fiber communications, implementing existing optical label functions. Since the optical labels of maintenance signals all have special frequencies, they can be distinguished by frequency and specific label content, that is, whether they are maintenance signals can be determined based on the optical label information.

[0089] In an optional embodiment of the present disclosure, 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 monitoring the f_oci and f_fdi frequencies, 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 can be further located. At the OTU port where the OCH terminates, the specific OCI and FDI alarm signals can be reported directly; 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 frequency f_mnt of the modulation information, which is distinguished as OCI / FDI information in the OAM frame. After detecting the f_mnt frequency, the intermediate node reports an MNT maintenance signal alarm within the service. This information is combined with the site's optical service configuration (all configured wavelengths) and the current normal optical signal to obtain a set of abnormal optical signals and further locate the specific wavelength carrying the filler maintenance signal. At the OTU port where the OCH terminates, specific OCI and FDI alarm signals can be directly reported based on the parsed OAM frame content.

[0090] In another optional embodiment of the present disclosure, detection of filler wave maintenance signals is implemented based on site detection. For example, different sites can select different frequencies when inserting f_fdi. The frequency value corresponds to the site ID, so the frequency value can be used to distinguish which site has detected the fault and replaced the filler wave maintenance signal. In another example, when inserting f_fdi at different sites, fault location information can be entered in the optical layer OAM frame definition, but it can only be identified and reported at the OTU port where the OCH terminates.

[0091] In another optional embodiment of the present disclosure, filler maintenance signal detection is implemented based on a specific waveform. For example, using WSS filtering, a normal signal has a spectrum width of at least 50 GHz, while WSS resolution can achieve 6.25 GHz frequency slot control. Therefore, the filler 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, alarms can be confirmed on the channel. Using a customized DSP, identification and reporting can also be performed at the OTU port where the OCH terminates.

[0092] In existing technologies, in non-fill wave systems, when services are not being sent to the network or when downstream optical signals are not received after an interruption, it is necessary to distinguish between overhead and payload, which is a non-path-associated optical layer overhead implementation solution. With the technical solutions of the disclosed embodiments, for C+L systems, when fill waves must be configured, they can be converted into path-associated overhead at a low cost using optical labels, simplifying the processing of optical layer overhead and providing richer operation and maintenance capabilities.

[0093] 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 the necessary general hardware platform, and of course it 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 the present disclosure, 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 enabling a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of the present disclosure.

[0094] FIG14 is a block diagram of a structure of an optical layer signal processing device according to an embodiment of the present disclosure; as shown in FIG14 , the device includes:

[0095] 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;

[0096] The filling processing module 1440 selects a specific first signal according to the filling wave processing requirements, and inserts all or part of the spectrum of the first signal into the optical path system to fill the idle spectrum on the optical path;

[0097] 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.

[0098] The above-described device modulates a broadband light source to generate a first signal, wherein the first signal is a broadband light source signal carrying modulation information. Based on fill-wave processing requirements, a specific first signal is selected and all or 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 then detected at a downstream optical signal detection point to obtain the modulation information inserted by the upstream first signal. This method solves the problem that optical layer signal operation and maintenance information can only be transmitted non-in-line, which leads to high complexity in the transmission processing process. The above-described method simplifies the complexity of the optical layer signal transmission processing process.

[0099] In an exemplary embodiment, the modulated light source module 1420 is configured to obtain the broadband light source; and modulate the broadband light source according to a modulation method to obtain the first signal.

[0100] In an exemplary embodiment, the modulated light source module 1420 is configured to obtain the broadband light source; modulate the broadband light source according to a filtering method to form a characteristic waveform, to obtain the first signal.

[0101] In an exemplary embodiment, the fill processing module 1440 is configured 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 entire / partial spectrum of the second signal is inserted into the spare spectrum outside the normal wavelength signal in the line optical signal.

[0102] In an exemplary embodiment, the filling processing module 1440 is configured 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.

[0103] In an exemplary embodiment, the modulation detection module 1460 is configured 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; 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: the specific first signal, as well as signal type information, modulation signal frequency, and occupied spectrum information.

[0104] In an exemplary embodiment, the modulation detection module 1460 is configured to perform optical signal detection of a single wavelength information when the downstream optical signal detection point is an OCH termination position detection point; 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: 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.

[0105] Optionally, in this embodiment, the storage medium may be configured to store program codes for executing the following steps:

[0106] S1, modulating a broadband light source to generate a first signal, wherein the first signal is a broadband light source signal carrying modulation information;

[0107] S2, selecting a specific first signal according to fill wave processing requirements, and 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;

[0108] S3: Detect modulation information at a downstream optical signal detection point to obtain modulation information inserted into the upstream first signal.

[0109] An embodiment of the present disclosure further provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0110] 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.

[0111] Optionally, in this embodiment, the processor may be configured to execute the following steps through a computer program:

[0112] S1, modulating a broadband light source to generate a first signal, wherein the first signal is a broadband light source signal carrying modulation information;

[0113] S2, selecting a specific first signal according to fill wave processing requirements, and 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;

[0114] S3: Detect modulation information at a downstream optical signal detection point to obtain modulation information inserted into the upstream first signal.

[0115] An embodiment of the present disclosure further provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0116] 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.

[0117] Optionally, the optional examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment will not be described in detail here.

[0118] Obviously, those skilled in the art should understand that the modules or steps of the present disclosure described above can be implemented using a general-purpose computing device, they can be concentrated on a single computing device, or distributed across a network composed of multiple computing devices. Alternatively, they can be implemented using program code executable by the computing device, so that they can be stored in a storage device and executed by the computing device. In some cases, the steps shown or described can be performed in a different order than herein, or they can be fabricated into separate integrated circuit modules, or multiple modules or steps can be fabricated into a single integrated circuit module for implementation. Thus, the present disclosure is not limited to any particular combination of hardware and software.

[0119] The above is only a preferred embodiment of the present disclosure. 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 disclosure. These improvements and modifications should also be regarded as within the scope of protection of the present disclosure.

Claims

1. A method for processing an optical layer signal, comprising: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, modulated 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, comprising: 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, wherein a computer program is stored in the storage medium, wherein: The computer program is arranged to execute the method as claimed in any one of claims 1 to 7 when executed.

10. An electronic device comprising 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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