A system, method, and computer-readable medium for controlling wavelength switching in an open all-photonics network.

Abstract

This invention provides a system, method, and computer-readable medium for instantly switching optical paths as needed in an open all-photonics network architecture. [Solution] The system is applied to an open all-photonics network and features wavelength switching protection and recovery functions to ensure that the network can be quickly restored and reliable service can be provided in the event of a failure. In actual operation, a dynamic routing monitoring module collects switching status information and data in real time, and a dynamic placement module performs wavelength path switching of open all-photonics network transceivers, thereby achieving highly efficient quality assurance monitoring and management.

Description

Technical Field

[0001] The present invention relates to network transmission technology, and particularly to a system, method, and computer-readable medium for controlling wavelength switching in an open all-photonics network.

Background Art

[0002] With the increasing demand for high-speed and low-latency communication, especially in application scenarios such as big data, IoT, and high-definition video, conventional transmission networks are no longer able to meet the requirements of modern data transmission. To solve this problem, currently, an all-photonics network architecture of an open all-photonics network (also referred to as Open APN) has been introduced to support high-speed and low-latency communication.

[0003] The Innovative Optical & Wireless Network Global Forum (IOWN GF) has proposed a new concept to leverage Open All-Photonics Networks (Open APNs) to realize technologies such as ultra-low power consumption and ultra-high-speed signal processing that surpass 5G communication. Open All-Photonics Networks (Open APNs) directly handle signal transmission and exchange in the optical domain, offering great potential for the future development of communication technologies. To realize Open APNs, the architecture of conventional Optical Transport Networks (OTNs) is evolving into an open architecture. Specifically, an open architecture all-photonics transmission network, or Open All-Photonics Network (Open APN), breaks down conventional OTN equipment into three units according to their function: Open All-Photonics Network Interchange (APN Interchange, also known as APN-I), Open All-Photonics Network Gateway (APN Gateway, also known as APN-G), and Open All-Photonics Network Transceiver (APN Transceiver, also known as APN-T). The Open All-Photonics Network Gateway (APN-G) and Open All-Photonics Network Interchange (APN-I) are managed by an All-Photonics Network Controller (APN Controller, also known as APN-C).

[0004] The Open All-Photonics Network (Open APN) architecture partially deconstructs traditional optical transmission network architectures, enabling support for equipment from different manufacturers and mitigating vendor lock-in issues. However, because each brand of equipment typically has its own unique features, Wavelength Switched Optical Network (WSON) technology cannot be used in an Open APN environment. WSON technology utilizes Wavelength Division Multiplexing (WDM) to simultaneously transmit data of multiple wavelengths over an optical fiber. If one optical path fails, WSON can quickly switch to another available optical path, ensuring communication connectivity and reliability. In other words, because WSON technology cannot be used in an Open APN environment due to the inability to use equipment from different brands, it cannot immediately switch to another optical path in the event of an optical path failure, potentially impacting network performance and reliability. [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] Therefore, network transmission technologies, particularly those that allow for immediate switching of optical paths as needed in an Open All-Photonics Network (Open APN) architecture, are currently a highly desired goal for companies in this field. [Means for solving the problem]

[0006] To achieve the above objective, the present invention provides a system for controlling wavelength switching of an open all-photonics network, comprising: a dynamic routing monitoring module that collects real-time information on the state of the optical network and, when it detects a change in the routing state of the optical network due to a path failure, acquires path switching data in the routing state and generates switching state information; and a dynamic placement module connected to the dynamic routing monitoring module that, upon receiving the switching state information, performs wavelength switching of open all-photonics network transceivers in the optical network based on pre-stored circuit routing data, so that the open all-photonics network transceivers are switched to wavelengths corresponding to new or redundant paths.

[0007] In one embodiment, the dynamic routing monitoring module obtains real-time information on the optical network status from open all-photonics network interchanges and open all-photonics network gateways or optical transmission networks (OTNs) in the optical network via the northbound interface of the software-defined network (SDN) controller.

[0008] In one embodiment, the north-facing interface is a network management or all-photonics network controller for an optical transmission network.

[0009] In one embodiment, the dynamic placement module, when the open all-photonics network interchange, the open all-photonics network gateway, and the open all-photonics network transceiver are from different equipment manufacturers, implements wavelength switching optical network (WSON) technology via a southbound interface to enable the open all-photonics network transceiver to switch to the corresponding wavelength.

[0010] In one embodiment, if the dynamic placement module determines, by telemetry technology, that circuit utilization falls within an off-peak period after the original wavelength path fault has been resolved, it initiates a wavelength restoration process to notify the dynamic routing monitoring module to switch to the original wavelength path, and at the same time, the open all-photonics network transceiver is switched to the original wavelength.

[0011] In one embodiment, the dynamic placement module utilizes telemetry big data collection technology to cleanse and label large amounts of data, thereby achieving telemetry accuracy for the telemetry technology.

[0012] Furthermore, the present invention provides a method for controlling wavelength switching of an open all-photonics network, which is performed on a computer or server and includes the steps of: a dynamic routing monitoring module collecting real-time information on the state of the optical network; the dynamic routing monitoring module, when it detects a change in the routing state of the optical network due to a path failure, acquiring path switching data in the routing state and generating switching state information; and a dynamic placement module, upon receiving the switching state information, performing wavelength switching of open all-photonics network transceivers in the optical network based on pre-stored circuit routing data, so that the open all-photonics network transceivers can be switched to wavelengths corresponding to new or redundant paths.

[0013] In the method described above, the step of the dynamic routing monitoring module collecting real-time information on the optical network status includes the step of the dynamic routing monitoring module obtaining real-time information on the optical network status from open all-photonics network interchanges and open all-photonics network gateways or optical transmission networks (OTNs) in the optical network via the north-facing interface of the software-defined network (SDN) controller.

[0014] Furthermore, the north-facing interface is a network management or all-photonic network controller for an optical transmission network.

[0015] In the above method, the step of performing wavelength switching of open all-photonics network transceivers in the optical network includes, if the dynamic placement module is from different equipment manufacturers, the step of performing wavelength switching optical network (WSON) technology via a south-facing interface so that the open all-photonics network transceivers can be switched to the corresponding wavelengths.

[0016] In the above method, the method for controlling wavelength switching of the open all-photonics network further includes the step of initiating a wavelength restoration process when the dynamic placement module determines, by telemetry technology, that circuit utilization falls within an off-peak period after the original wavelength path fault has been resolved, thereby notifying the dynamic routing monitoring module to switch to the original wavelength path, and simultaneously enabling the open all-photonics network transceivers to switch to the original wavelength.

[0017] In the method described above, the dynamic deployment module utilizes telemetry big data collection technology to cleanse and label large amounts of data, thereby achieving the telemetry accuracy of the telemetry technology.

[0018] The present invention further provides a method for controlling wavelength switching in an open all-photonics network, which is performed on a computer or server and includes the steps of: a dynamic routing monitoring module monitoring the open all-photonics network and receiving warning or wavelength switching messages; the dynamic routing monitoring module using telemetry techniques to detect changes in the routing state of the open all-photonics network via a north-facing interface of a software-defined network (SDN) controller and obtaining switching state information relating to wavelength switching; and a dynamic placement module switching open all-photonics network transceivers in the open all-photonics network to the corresponding wavelength in real time based on the switching state information of the dynamic routing monitoring module.

[0019] In the method described above, the step of switching the open all-photonics network transceiver in the open all-photonics network to the corresponding wavelength in real time includes, if a failure occurs in the original wavelength path, the dynamic placement module switching the open all-photonics network transceiver to the wavelength of a new or redundant path in real time, or, if the failure in the original wavelength path is resolved, the dynamic placement module acquires circuit traffic via the south-facing interface, and if the circuit utilization is low and falls within an off-peak period, it initiates a wavelength restoration process and notifies the dynamic routing monitoring module to switch to the original wavelength path, while simultaneously switching the open all-photonics network transceiver to the original wavelength in real time.

[0020] The present invention further provides a computer-readable medium applicable to a computing device or computer, the computer-readable medium storing instructions for performing a method for controlling the wavelength switching of the open all-photonics network. [Effects of the Invention]

[0021] As described above, the system, method, and computer-readable medium for controlling wavelength switching in an open all-photonics network according to the present invention are applicable to open all-photonics networks, provide wavelength switching protection and restoration functions, realize 1+R protection measures in optical transmission networks, and ensure that the network can be quickly restored and reliable service can be provided in the event of a failure. In actual operation, the dynamic routing monitoring module of the present invention can provide highly efficient quality assurance monitoring and management by collecting information and data on the switching status in real time and updating the placement of open all-photonics network transceivers (i.e., wavelength routing switching) by the dynamic placement module.

[0022] The aforementioned 1+R protection mechanism is a combined protection and recovery mechanism that ensures the stability and reliability of network connectivity. In the 1+R architecture, "1" represents the primary routing and "R" represents the backup routing. The primary routing is the main transmission channel during normal operation, while the backup routing is a backup channel activated when the primary routing fails. The 1+R protection mechanism includes fault monitoring and rapid recovery; that is, the system continuously monitors the operating status of the primary route, and if a link failure is detected, it immediately and automatically switches to the backup route to prevent service interruption. This rapid recovery capability is one of the core advantages of the 1+R protection mechanism. Furthermore, the 1+R protection mechanism offers good resource efficiency, being more efficient in resource usage compared to conventional 1+1 protection mechanisms, and the backup routing is not normally used under normal circumstances, saving bandwidth resources. [Brief explanation of the drawing]

[0023] [Figure 1] It is a system architecture diagram of a system for controlling wavelength switching of an open all-optical photonics network according to the present invention. [Figure 2] It is an operation structure diagram of a specific embodiment of a system for controlling wavelength switching of an open all-optical photonics network according to the present invention. [Figure 3] It is a step diagram of a method for controlling wavelength switching of an open all-optical photonics network according to the present invention. [Figure 4] It is a step diagram of another embodiment of a method for controlling wavelength switching of an open all-optical photonics network according to the present invention. [Figure 5] It is an operation flowchart of dynamic wavelength switching during service failure of the present invention. [Figure 6] It is an operation flowchart of dynamic wavelength restoration during service restoration of the present invention.

Embodiments for Carrying Out the Invention

[0024] Hereinafter, the technical content of the present invention will be described by specific specific embodiments, and those skilled in the art can easily understand the advantages and effects of the present invention from the disclosed content of this specification. However, the present invention can also be implemented or applied by other different specific embodiments.

[0025] Figure 1 is a system architecture diagram of a system for controlling wavelength switching in an open all-photonics network according to the present invention. Wavelength switching optical network (WSON) technology or function utilizes wavelength division multiplexing (WDM) technology to simultaneously transmit data of multiple wavelengths over an optical fiber. If a failure occurs in one optical path, WSON technology or function can quickly switch to another available optical path, thereby ensuring communication connectivity and reliability. However, because equipment from each manufacturer usually has its own unique functions, WSON technology or function cannot be used in an open all-photonics network (Open APN) environment. In contrast, the present invention proposes a WSON architecture applicable to open all-photonics networks that can achieve dynamic wavelength switching in equipment from different manufacturers and ensure network reliability. As shown in the figure, the system 1 for controlling wavelength switching in an open all-photonics network according to the present invention includes a dynamic routing monitoring module 11 and a dynamic placement module 12.

[0026] The dynamic routing monitoring module 11 collects real-time information on the optical network state and, when it detects a change in the routing state of the optical network due to a path failure, acquires path switching data in that routing state and generates switching state information. In one embodiment, the dynamic routing monitoring module 11 monitors and manages the network by collecting and updating real-time information on the optical network state, including real-time routing state and switching records. By continuously monitoring the network state, the dynamic routing monitoring module 11 can detect changes in the routing state and update the network infrastructure in real time. The dynamic routing monitoring module 11 also needs to record the original wavelength information in the circuit routing data of system 1, which controls the wavelength switching of the open all-photonics network, and this original wavelength information may be used as a reference during wavelength switching.

[0027] The dynamic placement module 12 is connected to the dynamic routing monitoring module 11 and, upon receiving the switching status information, is used to perform wavelength switching of the open all-photonics network transceivers in the optical network based on pre-stored circuit routing data, so that the open all-photonics network transceivers can be switched to wavelengths corresponding to new or redundant paths. In one embodiment, the dynamic placement module 12 can update the placement of open all-photonics network transceivers (Open APN Transceivers, APN-T) in real time based on the switching status information received from the dynamic routing monitoring module 11.

[0028] Specifically, if the original wavelength path becomes impassable due to a failure, WSON technology or functionality switches to a new or redundant path instead of the original path. However, in an open all-photonics network, real-time information exchange between devices is usually not possible due to the use of equipment from different manufacturers. Therefore, all-photonics network transceivers (APN-T) in an open all-photonics network cannot switch to the corresponding wavelength in real time, resulting in a loss of optical path connectivity. For this reason, when the dynamic placement module 12 receives information regarding the optical path switching status from the dynamic routing monitoring module 11, it immediately notifies the all-photonics network transceiver (APN-T) to switch to the corresponding wavelength in real time, thereby maintaining optical path connectivity. Thus, the present invention also incorporates WSON technology or functionality in the architecture of an open all-photonics network.

[0029] In one embodiment, the dynamic deployment module 12 utilizes telemetry big data acquisition technology to cleanse and label large amounts of data, thereby achieving the accuracy of the telemetry technology. Specifically, by utilizing telemetry big data acquisition technology to cleanse and label large amounts of data, the dynamic deployment module 12 overcomes the problem of large-scale data acquisition and reduces the amount of data processing required, thereby supporting second-level telemetry accuracy. Furthermore, conventional methods perform detection at regular intervals (e.g., every minute), but such methods can result in switching delays. In contrast, the present invention employs telemetry big data acquisition technology, enabling data acquisition at the second level (i.e., instantaneous), thus reducing network instability due to delays.

[0030] Furthermore, after the path obstruction for the original wavelength is resolved, the dynamic placement module 12 switches the current transmission optical path back to the original path. In other words, if the dynamic placement module 12 determines that the circuit utilization is low and that it is in an off-peak period, it indicates that the switching operation will not have a significant impact, and therefore can initiate the wavelength restoration process. At this time, the dynamic placement module 12 notifies the dynamic routing monitoring module 11 to return to the original wavelength path and simultaneously performs dynamic placement on the open all-photonics network transceiver, thereby restoring the service wavelength of the open all-photonics network transceiver to its original wavelength. In short, it switches the current wavelength path back to the original wavelength path.

[0031] As described above, the present invention provides WSON technology or functionality under an open all-photonics network by performing dynamic routing monitoring and real-time dynamic placement of all-photonics network transceivers. Therefore, in actual operation, first, the dynamic routing monitoring module 11 is used to collect optical path information, and the wavelength path to be switched is derived using WSON technology or functionality. Next, the dynamic placement module 12 switches the relevant open all-photonics network transceivers (APN-T) to the wavelength of the same path, thereby ensuring network reliability.

[0032] Figure 2 is an operational structure diagram of a specific embodiment of the system for controlling wavelength switching of an open all-photonics network according to the present invention, which includes at least a system (1) for controlling wavelength switching of the open all-photonics network, a north-facing interface (20), a south-facing interface (30), an APN-T (40), and an OTN (41) / APN-I (42) / APN-G (43). As shown in the figure, the system 1 for controlling wavelength switching of the open all-photonics network is the same as that shown in Figure 1, so a detailed explanation is omitted here. In this embodiment, the operational structure of the system 1 for controlling wavelength switching of the open all-photonics network and the entire open all-photonics network will be further explained.

[0033] The dynamic routing monitoring module 11 acquires real-time information on the optical network status from an Open All-Photonics Network Interchange (APN-I) and Open All-Photonics Network Gateway (APN-G) or Optical Transport Network (OTN) in the optical network via the north-facing interface 20 of the software-defined network (SDN) controller. In one embodiment, the north-facing interface 20 may be the network management or all-photonics network controller (Open APN Controller, APN-C) of the optical transport network.

[0034] In one embodiment, the dynamic routing monitoring module 11 acquires real-time information on the optical network status by obtaining real-time information such as critical alerts, dynamic routing switching status and / or dynamic routing with second-level accuracy via open interfaces (e.g., T-API and TMF API) of the software-defined network (SDN) controller.

[0035] The dynamic placement module 12 enables the Open All Photonics Network Transceiver (APN-T) to switch to the corresponding wavelength by performing Wavelength Switching Optical Network (WSON) technology or function via the south-facing interface 30 when the Open All Photonics Network Interchange (APN-I), Open All Photonics Network Gateway (APN-G), and Open All Photonics Network Transceiver (APN-T) are from different equipment manufacturers. In one embodiment, when the Open All Photonics Network Interchange (APN-I) / Open All Photonics Network Gateway (APN-G) / Optical Transmission Network (OTN) and Open All Photonics Network Transceiver (APN-T) are from different equipment manufacturers, WSON communication is performed via an open interface (e.g., OpenConfig).

[0036] Specifically, the dynamic placement module 12 acquires real-time information of the open all-photonics network transceiver (APN-T) by acquiring real-time information such as critical optical power, optical signal-to-noise ratio (OSNR), calibration operations, central processing unit (CPU) usage, memory usage, and / or power consumption with second-level accuracy via an open interface (e.g., OpenConfig).

[0037] Furthermore, if the fault in the original wavelength path is resolved and telemetry technology determines that the circuit utilization falls within a statistically off-peak period, the wavelength restoration process can be initiated, and the dynamic placement module 12 can notify the dynamic routing monitoring module 11 to switch back to the original wavelength path.

[0038] As described above, the system 1 for controlling wavelength switching in an open all-photonics network according to the present invention can monitor APN-I / APN-G / OTN via a north-facing interface, e.g., APN-C (using REST / T-API) or OTN network management (using CORBA / TMF-API), and manage APN-T via a south-facing interface (e.g., an application employing NETCONF / YANG), thereby meeting the needs for a low-latency and stable network. The system is an architecture of WSON technology or functionality applicable to open all-photonics networks (Open APN), enabling dynamic wavelength switching between equipment from different manufacturers and ensuring network reliability. Such an architecture allows wavelength switching between different vendors, providing not only fast, reliable, and low-latency connectivity, but also a superior customer experience and significantly reducing operating costs.

[0039] Each module of the present invention may be software, hardware, or firmware. If hardware, it may be a processing unit, processor, computer, or server having data processing and computing capabilities. If software or firmware, it may include instructions that can be executed by the processing unit, processor, computer, or server, and may be installed on the same hardware device or distributed across multiple different hardware devices.

[0040] Figure 3 is a step diagram of a method for controlling wavelength switching in an open all-photonics network according to the present invention. As shown in the figure, the method for controlling wavelength switching in an open all-photonics network according to the present invention can be executed on a computer or server and aims to ensure network transmission quality by realizing real-time wavelength switching in an open all-photonics network.

[0041] In step S301, the dynamic routing monitoring module collects real-time information on the optical network status. This step describes how the dynamic routing monitoring module monitors and manages the network by collecting and updating real-time information on optical paths, such as real-time routing status and switching records.

[0042] In one embodiment, the step of the dynamic routing monitoring module collecting real-time information on the optical network status further includes the step of the dynamic routing monitoring module obtaining real-time information on the optical network status from open all-photonic network interchanges and open all-photonic network gateways or optical transmission networks (OTNs) in the optical network via the north-facing interface of a software-defined network (SDN) controller. In one embodiment, the dynamic routing monitoring module obtains real-time information such as critical alerts, dynamic routing switching status, dynamic routing and / or optical power with second-level accuracy via the open interface of the SDN controller (e.g., TAPI or TMF API), and the open interface of the SDN controller may be a network management or all-photonic network controller for optical transmission networks.

[0043] In step S302, if the dynamic routing monitoring module detects a change in the routing state of the optical network due to a route failure, it acquires route switching data in the routing state and generates switching state information. This step describes how, when the dynamic routing monitoring module detects a change in the routing state, it acquires data related to route switching from the routing state and generates switching state information. This switching state information is used for deployment in subsequent infrastructure (e.g., open all-photonics network transceivers).

[0044] In step S303, when the dynamic placement module receives the switching status information, it performs wavelength switching of the open all-photonics network transceivers in the optical network based on pre-stored circuit routing data, so that the open all-photonics network transceivers are switched to the wavelength corresponding to the new or redundant path. This step describes how the dynamic placement module receives the switching status information and obtains the wavelength of the new or redundant path from the circuit routing data, thereby positioning the open all-photonics network transceivers so that they are switched to the corresponding wavelength.

[0045] In one embodiment, the step of performing wavelength switching of open all-photonics network transceivers in an optical network further includes the step of a dynamic placement module performing wavelength switching optical network (WSON) technology or function via a south-facing interface, if the open all-photonics network interchange (APN-I), open all-photonics network gateway (APN-G), and open all-photonics network transceiver (APN-T) are from different equipment manufacturers, so that the open all-photonics network transceiver can be switched to the corresponding wavelength.

[0046] In one embodiment, based on the fact that the above equipment cannot communicate directly because it is from different manufacturers, the dynamic placement module receives switching status information generated from the dynamic routing monitoring module and then performs wavelength switching optical network (WSON) technology or function via a south-facing interface. The south-facing interface may be, for example, OpenConfig, and further updates the placement of Open All Photonics Network Transceivers (APN-T), i.e., the switching of different wavelength paths, in real time.

[0047] In another embodiment, the dynamic placement module determines circuit utilization using telemetry techniques after the original wavelength path fault has been resolved. If the circuit utilization is low and falls within an off-peak time period, it activates a wavelength restoration process to restore the optical path to its original path. At this time, the dynamic placement module notifies the dynamic routing monitoring module to switch to the original wavelength path, and simultaneously ensures that the open all-photonics network transceiver switches to the original wavelength path.

[0048] Furthermore, the dynamic deployment module utilizes telemetry big data collection technology to cleanse and label large amounts of data, enabling rapid data acquisition and improving the accuracy of telemetry technology by reducing the number of data points through cleansing and labeling.

[0049] Figure 4 is a step diagram of another embodiment of the method for controlling wavelength switching of an open all-photonics network according to the present invention, which defines the wavelength switching method from an equipment perspective.

[0050] In step S401, the dynamic routing monitoring module monitors the open all-photonics network and receives warnings or wavelength switching information. This step explains that by monitoring the network and receiving warnings and wavelength switching messages, the dynamic routing monitoring module identifies whether a service is failing or recovering. If it fails, it switches to a different wavelength path, and if it recovers, a wavelength recovery process is performed.

[0051] Furthermore, if the APN-I / APN-G / OTN equipment is from the same manufacturer, WSON technology or functionality can be used to search for new, redundant, or original wavelength paths. However, if the Open All Photonics Network Transceiver (APN-T) is from a different manufacturer, messages cannot be exchanged directly, and therefore the technology of the present invention is needed to assist in coordinating the arrangement.

[0052] In step S402, the dynamic routing monitoring module uses telemetry technology to detect changes in the routing state of the open all-photonics network via the north-facing interface of the software-defined network (SDN) controller and obtains switching state information regarding wavelength switching. This step describes how the dynamic routing monitoring module uses the equipment manufacturer's telemetry technology to detect changes in the routing state with second-level accuracy via the open interface of the SDN controller (e.g., TAPI or TMF API) and obtains real-time information such as wavelength switching. In other words, the dynamic routing monitoring module obtains routing changes in the open all-photonics network via the north-facing interface and generates switching state information. This switching state information serves as the basis for subsequent infrastructure deployment.

[0053] In step S403, the dynamic placement module switches the open all-photonics network transceivers in the open all-photonics network to the corresponding wavelength in real time based on the switching status information of the dynamic routing monitoring module. This step describes how the dynamic placement module switches the open all-photonics network transceivers (APN-T) to the corresponding wavelength based on the switching wavelength provided by the dynamic routing monitoring module, and may further include the following two situations:

[0054] In the first scenario, if a failure occurs in the original wavelength path, the dynamic placement module switches the open all-photonics network transceiver to the wavelength of a new or redundant path in real time.

[0055] In one embodiment, if a failure occurs in the original wavelength path, it is necessary to switch to a new or redundant wavelength path and use a dynamic placement module to switch the APN-T to the corresponding wavelength in real time.

[0056] In the second scenario, if the obstruction in the original wavelength path is resolved, the dynamic placement module acquires circuit traffic via the south-facing interface, and if the circuit utilization is low and falls within an off-peak period, it initiates a wavelength restoration process, notifying the dynamic routing monitoring module to switch to the original wavelength path, and the dynamic placement module switches the open all-photonics network transceiver to the original wavelength in real time.

[0057] In one embodiment, when a fault in the original wavelength path is resolved, it is necessary to switch to the original wavelength path. The dynamic placement module acquires circuit flow with second-level accuracy via an open interface (i.e., a south-facing interface), and when the utilization is very low and falls within an off-peak period, it initiates the wavelength switching process, notifying the dynamic routing monitoring module to switch to the original wavelength path, and the dynamic placement module uses this to switch the APN-T to the corresponding wavelength in real time.

[0058] Figure 5 is an operation flowchart of the dynamic wavelength switching during a service failure according to the present invention, and includes at least a system (1) for controlling the wavelength switching of the open all-photonics network, APN-T (40), OTN (41) / APN-I (42) / APN-G (43), OTN network management (22), and APN-C (23).

[0059] In flow 501, a failure occurs in the original optical path, affecting the service circuit.

[0060] In Flow 502, the Open All Photonics Network Interchange (APN-I) / Open All Photonics Network Gateway (APN-G) / Optical Transmission Network (OTN) uses WSON technology or functionality to switch services to the new path and switch the wavelength path from 192.5 THz (terahertz) to a new / redundant wavelength path of 191.3 THz.

[0061] In flow 503, OTN Network Management / APN-C(21) sends a notification to the dynamic routing monitoring module in the system that controls wavelength switching in the open all-photonics network, including details of optical path failures, service alerts, dynamic routing status, and switching.

[0062] In flow 504, the system controlling the wavelength switching of the open all-photonics network utilizes a dynamic placement module to change the faulty wavelength path at 192.5 THz to a new / redundant wavelength path at 191.3 THz.

[0063] As a result, dynamic wavelength switching is completed in real time, and the service is restored.

[0064] Figure 6 is an operation flowchart of the dynamic wavelength restoration during service restoration according to the present invention, and includes at least a system (1) for controlling wavelength switching of the open all-photonics network, APN-T (40), OTN (41) / APN-I (42) / APN-G (43), OTN network management (22), and APN-C (23).

[0065] In flow 601, when service on the failed optical path is restored, multiple clear warnings are reported to OTN Network Management / APN-C(21) indicating that the service has been restored and is switchable. Subsequently, OTN Network Management / APN-C(21) sends a notification to the dynamic routing monitoring module in the system that controls wavelength switching in the open all-photonics network, providing information about the restored optical path and the restored service.

[0066] In flow 602, considering the temporary service interruption when switching to the original wavelength path, it is necessary to select an appropriate switching time. The dynamic placement module uses telemetry big data collection technology via the south-facing interface to cleanse and label large amounts of data, overcoming the problem of large-scale acquisition and obtaining critical circuit traffic with second-level accuracy. Furthermore, once the failure in the original wavelength path is resolved and telemetry technology determines that the circuit utilization falls within a statistically off-peak period, the wavelength restoration process is initiated, notifying the dynamic routing monitoring module to switch to the original wavelength path, and APN-I / APN-G / OTN switches back to the original path (the original path before the failure occurred), i.e., the wavelength path changes from 191.3 THz to 192.5 THz.

[0067] In flow 603, the system controlling the wavelength switching of the open all-photonics network uses a dynamic placement module to change the redundant wavelength path corresponding to 191.3 THz to the original wavelength path corresponding to 192.5 THz.

[0068] With the above steps completed, dynamic wavelength restoration is finished and the service is restored.

[0069] Furthermore, the present invention further provides a computer-readable medium applicable to a computing device or computer having a processor (e.g., CPU, GPU, etc.) and / or memory, wherein instructions are stored on the computer-readable medium, and the above methods and each step or flow are executed when the computer-readable medium is executed by the processor and / or memory using the computing device or computer. In one embodiment, the computer-readable medium is a non-transitory computer-readable storage medium.

[0070] As can be seen from the above, the system, method and computer-readable medium for controlling wavelength switching in an open all-photonics network according to the present invention is applicable to open all-photonics networks and includes wavelength switching protection and recovery functions, ensuring that the network can be quickly restored and reliable service can be provided in the event of a failure. During operation, a dynamic routing monitoring module collects switching status information and data in real time, and a dynamic placement module updates the placement of open all-photonics network transceivers (i.e., wavelength path switching), providing highly efficient quality assurance monitoring and management. Thus, the present invention has the following advantages.

[0071] The primary advantage is its high flexibility. Different wavelengths can be dynamically allocated, enabling efficient use of network resources and greater freedom in network design.

[0072] The second advantage is resource optimization. By dynamically allocating wavelengths, the optimal placement of network resources is achieved, ensuring high-speed, low-latency connectivity and improving network performance and reliability.

[0073] The third advantage is scalability. It can be actually applied in real network environments and has compatibility with equipment and technologies from different vendors.

[0074] The above detailed description provides specific examples of feasible embodiments of the present invention, but these embodiments are not intended to limit the scope of the patent claims of the present invention. All equivalent embodiments or modifications that do not depart from the technical spirit of the present invention are included within the scope of the patent claims of the present invention. [Explanation of symbols]

[0075] 1: A system for controlling wavelength switching in an open all-photonics network. 11: Dynamic Routing Monitoring Module 12: Dynamic Deployment Module 20: North-facing interface 21: OTN Network Management / APN-C 22: OTN Network Management 23: APN-C 30: South-facing interface 40: APN-T 41:OTN 42: APN-I 43: APN-G 501~504: Flow 601~603: Flow S301~S303: Step S401~S403: Step

Claims

1. A dynamic routing monitoring module that collects real-time information on the state of an optical network, and when it detects a change in the routing state of the optical network due to a path failure, it acquires path switching data in that routing state and generates switching state information. A dynamic placement module connected to the dynamic routing monitoring module, which, upon receiving the switching status information, performs wavelength switching of open all-photonic network transceivers in the optical network based on pre-stored circuit routing data, so that the open all-photonic network transceivers can be switched to wavelengths corresponding to new or redundant paths; A system for controlling wavelength switching of an open all-photonics network, characterized by including [a specific feature].

2. A system for controlling wavelength switching of an open all-photonics network according to claim 1, characterized in that the dynamic routing monitoring module acquires real-time information on the optical network status from an open all-photonics network interchange and an open all-photonics network gateway or optical transmission network in the optical network via a north-facing interface of a software-defined network controller.

3. The system for controlling wavelength switching of an open all-photonics network according to claim 2, characterized in that the north-facing interface is a network management or all-photonics network controller for an optical transmission network.

4. A system for controlling wavelength switching of an open all-photonics network according to claim 2, characterized in that the dynamic placement module performs wavelength switching optical networking technology via a south-facing interface, so that the open all-photonics network transceiver can be switched to the corresponding wavelength when the open all-photonics network interchange, the open all-photonics network gateway and the open all-photonics network transceiver are from different equipment manufacturers.

5. A system for controlling wavelength switching of an open all-photonics network according to claim 1, characterized in that, when the dynamic placement module determines, by telemetry technology, that the circuit utilization falls within an off-peak period after the original wavelength path fault has been resolved, it activates a wavelength restoration process to notify the dynamic routing monitoring module to switch to the original wavelength path, and at the same time, the open all-photonics network transceiver is switched to the original wavelength.

6. A system for controlling wavelength switching of an open all-photonics network according to claim 5, characterized in that the dynamic placement module utilizes telemetry big data acquisition technology to cleanse and label large amounts of data to achieve telemetry accuracy of the telemetry technology.

7. The dynamic routing monitoring module collects real-time information on the optical network status, When the dynamic routing monitoring module detects a change in the routing state of the optical network due to a route failure, it acquires route switching data in the routing state and generates switching state information. When a dynamic placement module receives the switching status information, it performs wavelength switching of the open all-photonics network transceivers in the optical network based on pre-stored circuit routing data, so that the open all-photonics network transceivers can be switched to the wavelength corresponding to the new or redundant path. A method for controlling wavelength switching of an open all-photonics network, characterized by including the following:

8. The step of the dynamic routing monitoring module collecting real-time information on the optical network status is: The dynamic routing monitoring module obtains real-time information on the optical network status from open all-photonic network interchanges and open all-photonic network gateways or optical transmission networks in the optical network via the north-facing interface of the software-defined network controller. A method for controlling wavelength switching of an open all-photonics network according to claim 7, characterized by including the following:

9. A method for controlling wavelength switching of an open all-photonics network according to claim 8, characterized in that the north-facing interface is a network management or all-photonics network controller for an optical transmission network.

10. The step of performing wavelength switching of open all-photonics network transceivers in the optical network is: If the dynamic placement module is from different equipment manufacturers, the open all-photonics network interchange, the open all-photonics network gateway, and the all-photonics network, the step is to perform wavelength switching optical networking technology via a south-facing interface so that the open all-photonics network transceiver can be switched to the corresponding wavelength. A method for controlling wavelength switching of an open all-photonics network according to claim 8, characterized by including the following:

11. The dynamic placement module, after the original wavelength path fault has been resolved and telemetry technology determines that the circuit utilization falls within an off-peak period, initiates a wavelength restoration process to notify the dynamic routing monitoring module to switch to the original wavelength path, and simultaneously enables the open all-photonics network transceiver to switch to the original wavelength. A method for controlling wavelength switching of an open all-photonics network according to claim 7, further comprising the following:

12. A method for controlling wavelength switching of an open all-photonics network according to claim 11, characterized in that the dynamic placement module utilizes telemetry big data acquisition technology to cleanse and label large amounts of data to achieve telemetry accuracy of the telemetry technology.

13. The dynamic routing monitoring module monitors the open all-photonics network and receives warning or wavelength switching messages. The dynamic routing monitoring module uses telemetry technology to detect changes in the routing state of the open all-photonics network via the north-facing interface of the software-defined network controller and obtains switching state information related to wavelength switching. The dynamic placement module switches the open all-photonics network transceivers in the open all-photonics network to the corresponding wavelength in real time based on the switching status information of the dynamic routing monitoring module. A method for controlling wavelength switching of an open all-photonics network, characterized by including the following:

14. The step of switching the open all-photonics network transceiver in the open all-photonics network to the corresponding wavelength in real time is: If a failure occurs in the original wavelength path, the dynamic placement module switches the open all-photonics network transceiver to the wavelength of a new or redundant path in real time; or, if the failure in the original wavelength path is resolved, the dynamic placement module acquires circuit traffic via the south-facing interface, and if the circuit utilization is low and falls within an off-peak period, it initiates a wavelength restoration process, notifies the dynamic routing monitoring module to switch to the original wavelength path, and the dynamic placement module switches the open all-photonics network transceiver to the original wavelength in real time. A method for controlling wavelength switching of an open all-photonics network according to claim 13, characterized by including the following:

15. A computer-readable medium applicable to a computing device or computer, A computer-readable medium characterized by storing instructions for performing a method for controlling wavelength switching of an open all-photonics network according to any one of claims 7 to 14.

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