System for controling wavelength switching of open all-photonic network, method and computer readable medium thereof

Abstract

This invention discloses a system and method for controlling wavelength switching in open all-optical networks. Applied to open all-optical networks, it features wavelength switching protection and recovery functions to ensure rapid network recovery and reliable service in the event of a fault. In actual operation, a dynamic routing monitoring module collects switching status information and data in real time, and a dynamic configuration module updates the configuration of the open all-optical network transceivers (i.e., wavelength path switching), thereby providing efficient quality assurance monitoring and management. This invention also provides a computer-readable medium for performing the method of this invention.

Description

Technical Field

[0001] This invention relates to network transmission technology, and more particularly to a system, method and computer-readable medium for controlling wavelength switching in an open all-optical network. Prior Technology

[0002] With the increasing demand for high-speed and low-latency communication, traditional transmission networks can no longer meet the requirements of modern data transmission, especially in applications such as big data, the Internet of Things, and high-definition video conferencing. To address this issue, the Open All-Photonics Network (Open APN) architecture has been introduced to support high-speed and low-latency communication.

[0003] The Innovative Optical & Wireless Network Global Forum (IOWN GF) proposed a new concept: leveraging Open All-Optical Networks (Open APNs) to achieve ultra-low power consumption and ultra-high-speed signal processing technologies that surpass 5G communications. Open APNs directly process signal transmission and switching in the optical domain, bringing immense potential for the future development of communication technologies. To realize Open APNs, the architecture of traditional Optical Transport Networks (OTNs) is gradually evolving into an open architecture. Specifically, the open architecture all-optical transmission network, namely the Open APN, divides traditional OTN equipment into three units according to function: Open APN Interchange (APN-I), Open APN Gateway (APN-G), and Open APN Transceiver (APN-T). The Open APN Gateway (APN-G) and Open APN Interchange (APN-I) are managed by the All-Optical Network Controller (APN-C).

[0004] The Open All-Optical Network (Open APN) architecture partially deconstructs the traditional optical transmission network architecture and supports equipment from different vendors, reducing vendor lock-in issues. However, because each vendor's equipment typically has unique functionalities, 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 across multiple wavelengths on an optical fiber. When one optical path fails, WSON can quickly switch to another available optical path to ensure communication connectivity and reliability. In other words, the inability to use WSON technology in an Open APN environment due to different equipment vendors may prevent timely switching to other optical paths in the event of an optical path failure, impacting network performance and reliability.

[0005] Therefore, finding a network transmission technology, especially one that can switch optical paths in real time when needed in an Open All-Optical Network (Open APN) architecture, has become a pressing goal for researchers in this field. Summary of the Invention

[0006] To achieve the aforementioned objectives, this invention proposes a system for controlling wavelength switching in an open all-optical network, comprising: a dynamic routing monitoring module, used to collect real-time information on the optical network status, so as to capture path switching data in the routing status to generate switching status information when a change in routing status is detected due to path obstacles in the optical network; and a dynamic configuration module, connected to the dynamic routing monitoring module, used to execute wavelength switching of the open all-optical network transceivers in the optical network according to pre-stored circuit routing data when the switching status information is received, so as to switch the open all-optical network transceivers to the wavelength corresponding to the new or redundant path.

[0007] In one embodiment, the dynamic routing monitoring module obtains real-time information about the status of the optical network from the open all-optical network switch and open all-optical network gateway or optical transport network (OTN) in the optical network through the northbound interface of the software-defined networking (SDN) controller.

[0008] In one embodiment, the northbound interface is an optical transport network management system or an all-optical network controller.

[0009] In one embodiment, when the open all-optical network switch and the open all-optical network gateway are from different equipment vendors and the open all-optical network transceiver are from different vendors, the dynamic configuration module performs wavelength-switched optical network (WSON) technology through the southbound interface to enable the open all-optical network transceiver to switch to the corresponding wavelength.

[0010] In one embodiment, after the path obstacle of the original wavelength is eliminated, the dynamic configuration module determines that the circuit utilization rate is in the off-peak period through telemetry technology, and initiates a wavelength recovery procedure to notify the dynamic routing monitoring module to switch back to the original wavelength path, and at the same time to make the open all-optical network transceiver switch to the original wavelength.

[0011] In one embodiment, the dynamic configuration module uses telemetry massive data acquisition technology to clean and label massive amounts of data in order to achieve the telemetry accuracy of the telemetry technology.

[0012] This invention further discloses a method for controlling wavelength switching in an open all-optical network, which is executed on a computer or server. The method for controlling wavelength switching in an open all-optical network includes the following steps: having a dynamic routing monitoring module collect real-time information on the optical network status; when the dynamic routing monitoring module detects a change in the routing status of the optical network due to path obstacles, capturing path switching data in the routing status to generate switching status information; and having a dynamic configuration module receive the switching status information and, based on pre-stored circuit routing data, perform wavelength switching of the open all-optical network transceivers in the optical network, so that the open all-optical network transceivers switch to the wavelength corresponding to the new or redundant path.

[0013] In the above method, the step of enabling the dynamic routing monitoring module to collect real-time information on the optical network status includes: enabling the dynamic routing monitoring module to obtain real-time information on the optical network status from the open all-optical network switch and open all-optical network gateway or optical transport network (OTN) in the optical network through the northbound interface of the software-defined networking (SDN) controller.

[0014] Furthermore, the northbound interface is an optical transport network management system or an all-optical network controller.

[0015] In the above method, the step of performing wavelength switching of the open all-optical network transceiver in the optical network includes: when the open all-optical network switch and the open all-optical network gateway are from different equipment manufacturers than the open all-optical network transceiver, the dynamic configuration module performs wavelength switching optical network (WSON) technology through the southbound interface to enable the open all-optical network transceiver to switch to the corresponding wavelength.

[0016] In the above method, the method for controlling the wavelength switching of the open all-optical network further includes: after the path obstacle of the original wavelength is eliminated, the dynamic configuration module determines through telemetry that the circuit utilization rate is in the off-peak period, initiates the wavelength recovery procedure to notify the dynamic routing monitoring module to switch back to the original wavelength path, and at the same time, the open all-optical network transceiver switches to the original wavelength.

[0017] In the above method, the dynamic configuration module uses telemetry massive data acquisition technology to clean and label massive amounts of data in order to achieve the telemetry accuracy of the telemetry technology.

[0018] This invention further discloses a method for controlling wavelength switching in an open all-optical network, which is executed on a computer or server. The method for controlling wavelength switching in an open all-optical network includes the following steps: having a dynamic routing monitoring module monitor the open all-optical network and receive alarm or wavelength switching messages; having the dynamic routing monitoring module use telemetry technology to detect changes in the routing status of the open all-optical network through the northbound interface of a software-defined networking (SDN) controller to obtain switching status information related to wavelength switching; and having a dynamic configuration module, based on the switching status information from the dynamic routing monitoring module, to switch the open all-optical network transceivers in the open all-optical network to the corresponding wavelength in real time.

[0019] In the above method, the step of instantly switching the open all-optical network transceiver in the open all-optical network to the corresponding wavelength includes: when an obstacle occurs on the path of the original wavelength, instantly switching the open all-optical network transceiver to the wavelength of a new or redundant path through the dynamic configuration module; or when the obstacle on the path of the original wavelength is cleared, having the dynamic configuration module capture circuit traffic through the southbound interface, and initiating a wavelength recovery procedure during periods of low circuit utilization and off-peak hours, so as to notify the dynamic routing monitoring module to switch back to the original wavelength path, and instantly switching the open all-optical network transceiver to the original wavelength through the dynamic configuration module.

[0020] The present invention further discloses a computer-readable medium, which is used in a computing device or computer, and stores instructions to execute the aforementioned method for controlling the wavelength switching of an open all-optical network.

[0021] In summary, the system, method, and computer-readable medium for controlling wavelength switching in open all-optical networks of this invention are applied to open all-optical networks and have wavelength switching protection and recovery functions. They can implement a 1+R protection scheme in optical transmission networks, ensuring that the network can quickly recover and provide reliable services when a fault occurs. In actual operation, the dynamic routing monitoring module of this invention can collect switching status information and data in real time, and update the configuration of the open all-optical network transceivers (i.e., wavelength path switching) through the dynamic configuration module, thereby providing efficient quality assurance monitoring and management.

[0022] The aforementioned 1+R protection scheme is a mechanism that combines protection and recovery to ensure the stability and reliability of network connections. In the 1+R architecture, "1" represents the primary route and "R" represents the recovery route. The primary route is the main transmission channel during normal operation, while the recovery route is the backup channel activated when the primary route fails. The 1+R protection scheme features fault monitoring and rapid recovery. That is, the system continuously monitors the operation of the primary path, and once a link failure is detected, the system will immediately and automatically switch to the recovery path to ensure uninterrupted service. This rapid recovery capability is one of the core advantages of the 1+R protection scheme. Furthermore, the 1+R protection scheme offers good resource efficiency. Compared to the traditional 1+1 protection scheme, the 1+R protection scheme is more efficient in resource utilization. The recovery route is usually not used under normal circumstances to save bandwidth resources. Simple Explanation of the Diagram

[0023] Figure 1 is a system architecture diagram of the system for controlling wavelength switching of open all-optical networks according to the present invention.

[0024] Figure 2 is an operational architecture diagram of a specific embodiment of the system for controlling wavelength switching of open all-optical networks according to the present invention.

[0025] Figure 3 is a step diagram of the method for controlling wavelength switching in an open all-optical network according to the present invention.

[0026] Figure 4 is a step diagram of another embodiment of the method for controlling wavelength switching of open all-optical networks according to the present invention.

[0027] Figure 5 is a flowchart illustrating the operation of dynamic wavelength switching during service failures according to the present invention.

[0028] Figure 6 is a flowchart of the operation of dynamic wavelength recovery during service restoration according to the present invention. Implementation

[0029] The technical content of this invention is described below through specific embodiments. Those skilled in the art can easily understand the advantages and effects of this invention from the content disclosed in this specification. However, this invention can also be implemented or applied through other different embodiments.

[0030] Figure 1 is a system architecture diagram of the system for controlling wavelength switching in an open all-optical network according to the present invention. Wavelength-switched optical network (WSON) technology or function utilizes wavelength division multiplexing (WDM) technology to transmit data of multiple wavelengths simultaneously on an optical fiber. When one optical path fails, WSON technology or function can quickly switch to other available optical paths, thereby ensuring communication connectivity and reliability. However, because equipment from different manufacturers usually has unique functions, WSON technology or function cannot be used in an open all-optical network (Open APN) environment. To address this, the present invention proposes a WSON architecture suitable for open all-optical networks, which can realize dynamic wavelength switching under equipment from different manufacturers to ensure network reliability. As shown in the figure, the system 1 for controlling wavelength switching in an open all-optical network according to the present invention includes a dynamic routing monitoring module 11 and a dynamic configuration module 12.

[0031] The dynamic routing monitoring module 11 is used to collect real-time information about the optical network status. When a change in the routing status of the optical network due to path obstacles is detected, it captures path switching data in the routing status to generate switching status information. In one embodiment, the dynamic routing monitoring module 11 collects and updates real-time information about the optical network status, including real-time routing status and switching records, thereby monitoring and managing the network. By continuously monitoring the network status, the dynamic routing monitoring module 11 can detect changes in routing status and update the network infrastructure in real time. In addition, the dynamic routing monitoring module 11 must also be able to record the original wavelength information in the circuit routing data of the system 1 for controlling wavelength switching of the open all-optical network. This original wavelength information can be used as a reference during wavelength switching.

[0032] The dynamic configuration module 12 is connected to the dynamic routing monitoring module 11. Upon receiving the handover status information, the dynamic configuration module 12 performs wavelength switching on the Open APN Transceiver (APN-T) in the optical network based on pre-stored circuit routing data, thereby switching the APN-T to the wavelength corresponding to the new or redundant path. In one embodiment, the dynamic configuration module 12 can update the configuration of the APN-T in real time based on the handover status information received from the dynamic routing monitoring module 11.

[0033] Specifically, when the path of the original wavelength is blocked and cannot pass, WSON technology or function will switch to a new or redundant path to replace the original path. However, since open all-optical networks usually cannot exchange messages in real time between devices due to different equipment vendors, the all-optical network transceiver (APN-T) in the open all-optical network cannot be switched to the corresponding wavelength in time, which will cause the optical path to be disconnected. Therefore, when the dynamic configuration module 12 receives the switching status information of the optical path from the dynamic routing monitoring module 11, it will immediately notify the all-optical network transceiver (APN-T) to switch to the corresponding wavelength in time, so that the optical path can remain connected. Thus, the present invention can still have WSON technology or function in the open all-optical network architecture.

[0034] In one embodiment, the dynamic configuration module 12 employs telemetry massive data acquisition technology to clean and label massive amounts of data, thereby achieving the telemetry accuracy of the telemetry technology. Specifically, the dynamic configuration module 12 uses telemetry massive data acquisition technology and cleans and labels massive amounts of data to overcome the problem of massive data acquisition. By reducing the amount of data processing, it can support telemetry accuracy at the second level. In addition, traditional methods may detect data once every certain period of time (e.g., 1 minute), but this method may lead to handover delays. The present invention uses telemetry massive data acquisition technology, which can obtain data at the second level (i.e., immediately), thus reducing network instability caused by delays.

[0035] In addition, after the path obstacle of the original wavelength is eliminated, the dynamic configuration module 12 will switch the optical path used for current transmission back to the original path. That is, when the dynamic configuration module 12 determines that the circuit utilization is low and it is in the off-peak period, it means that the switching action will not cause too much impact, so the wavelength recovery procedure can be started. At this time, the dynamic configuration module 12 notifies the dynamic routing monitoring module 11 to switch back to the original wavelength path, and at the same time performs dynamic configuration on the open all-optical network transceiver, so that the service wavelength of the open all-optical network transceiver is changed back to the original wavelength, that is, the current wavelength path is switched back to the original wavelength path.

[0036] In summary, this invention utilizes dynamic routing monitoring and real-time dynamic configuration of all-optical network transceivers to enable WSON technology or functionality in open all-optical networks. Therefore, in actual operation, the dynamic routing monitoring module 11 first collects optical path information and uses WSON technology or functionality to determine the wavelength path to be switched. Then, the dynamic configuration module 12 switches the relevant open all-optical network transceivers (APN-T) to the same path wavelength to ensure network reliability.

[0037] Figure 2 is an operational architecture diagram of a specific embodiment of the system for controlling wavelength switching in an open all-optical network according to the present invention, which includes at least: a system 1 for controlling wavelength switching in an open all-optical network, a northbound interface 20, a southbound interface 30, an APN-T 40, and OTN 41 / APN-I 42 / APN-G 43. As shown in the figure, the system 1 for controlling wavelength switching in an open all-optical network is the same as that described in Figure 1, so it will not be described again. In this embodiment, the operational architecture of the system 1 for controlling wavelength switching in an open all-optical network and the entire open all-optical network is further explained.

[0038] The dynamic routing monitoring module 11 obtains real-time information about the optical network status from the Open APN Interchange (APN-I), Open APN Gateway (APN-G), or Optical Transport Network (OTN) within the optical network via the northbound interface 20 of the Software Defined Networking (SDN) controller. In one embodiment, the northbound interface 20 may be an optical transport network management system or an Open APN Controller (APN-C).

[0039] In one embodiment, the dynamic routing monitoring module 11 captures key alarms, dynamic routing switching status, and / or dynamic routing information with second-level precision through the open interface (e.g., T-API and TMF API) of the software-defined networking (SDN) controller, thereby obtaining real-time information on the optical network status.

[0040] When the Open All-Optical Network Switch (APN-I), Open All-Optical Network Gateway (APN-G), and Open All-Optical Network Transceiver (APN-T) are from different equipment vendors, the Dynamic Configuration Module 12 can implement Wavelength Switched Optical Network (WSON) technology or functions through the Southbound Interface 30, enabling the Open All-Optical Network Transceiver (APN-T) to switch to the corresponding wavelength. In one embodiment, when the Open All-Optical Network Switch (APN-I), Open All-Optical Network Gateway (APN-G), Optical Transport Network (OTN), and Open All-Optical Network Transceiver (APN-T) are from different equipment vendors, WSON interoperability will be achieved through an open interface (e.g., OpenConfig).

[0041] Specifically, the dynamic configuration module 12 uses an open interface (such as OpenConfig) to capture real-time information such as key optical power, optical signal-to-noise ratio (OSNR), calibration operations, central processing unit (CPU) utilization, memory utilization and / or power consumption with second-level precision, thereby obtaining real-time information of the Open All-Optical Network Transceiver (APN-T).

[0042] In addition, if the obstruction of the original wavelength path has been removed, and the circuit utilization rate is determined to be in the off-peak period according to telemetry technology, the wavelength recovery procedure can be started, and the dynamic configuration module 12 can notify the dynamic routing monitoring module 11 to switch back to the original wavelength path first.

[0043] As can be seen from the above, the wavelength switching system 1 of the present invention for managing open all-optical networks can monitor APN-I / APN-G / OTN through a northbound interface, such as APN-C (using REST / T-API) or OTN network management (using CORBA / TMF-API), and manage APN-T through a southbound interface (such as using NETCONF / YANG applications), thereby meeting the requirements for low latency and stable networks. The system is based on WSON technology or functional architecture suitable for open all-optical networks (Open APN), and can realize dynamic wavelength switching under different vendor equipment to ensure network reliability. This architecture allows wavelength switching between different vendors, providing not only high-speed, reliable and low-latency connections, but also a superior customer experience and significantly reduced maintenance costs.

[0044] Each module of the present invention can be software, hardware or firmware; if it is hardware, it can be a processing unit, processor, computer or server with data processing and computing capabilities; if it is software or firmware, it can include instructions executable by the processing unit, processor, computer or server, and can be installed on the same hardware device or distributed on different multiple hardware devices.

[0045] Figure 3 is a flowchart illustrating the steps of the method for controlling wavelength switching in an open all-optical network according to the present invention. As shown in the figure, the method for controlling wavelength switching in an open all-optical network according to the present invention can be executed on a computer or server, and its purpose is to achieve real-time wavelength switching in an open all-optical network, thereby ensuring network transmission quality.

[0046] In step S301, the dynamic routing monitoring module collects real-time information about the optical network status. This step explains that the dynamic routing monitoring module collects and updates real-time information about the optical path, such as real-time routing status and switching records, in order to monitor and manage the network.

[0047] In one embodiment, the step of the dynamic routing monitoring module collecting real-time information on the optical network status further includes: enabling the dynamic routing monitoring module to obtain real-time information on the optical network status from open all-optical network switches and open all-optical network gateways or optical transport networks (OTNs) in the optical network through the northbound interface of the software-defined networking (SDN) controller. In one embodiment, the dynamic routing monitoring module captures real-time information such as key alarms, dynamic routing switching status, dynamic routing, and / or optical power with second-level precision through the open interface (e.g., TAPI and TMF API) of the SDN controller, and the open interface of the SDN controller can be an optical transport network management system or an all-optical network controller.

[0048] In step S302, when the dynamic routing monitoring module detects a change in the routing state of the optical network due to path obstacles, it captures the path switching data in the routing state to generate switching state information. This step explains that when the dynamic routing monitoring module detects a change in the routing state, it obtains relevant path switching data from the routing state to generate switching state information. This switching state information will be used for the configuration of subsequent infrastructure (such as open all-optical network transceivers).

[0049] In step S303, when the dynamic configuration module receives the handover status information, it performs wavelength switching of the open all-optical network transceiver in the optical network according to the pre-stored circuit routing data, so that the open all-optical network transceiver switches to the wavelength corresponding to the new or redundant path. This step explains that when the dynamic configuration module receives the handover status information, it obtains the wavelength of the new or redundant path from the circuit routing data, and thereby configures the open all-optical network transceiver to switch to the corresponding wavelength.

[0050] In one embodiment, the step of performing wavelength switching of an open all-optical network transceiver in an optical network further includes: when the open all-optical network switch (APN-I), open all-optical network gateway (APN-G), and open all-optical network transceiver (APN-T) are from different equipment vendors, the dynamic configuration module performs wavelength switching optical network (WSON) technology or function through the southbound interface to enable the open all-optical network transceiver to switch to the corresponding wavelength.

[0051] In one embodiment, since the devices mentioned above are from different manufacturers and cannot communicate directly, after the dynamic configuration module receives the switching status information generated by the dynamic routing monitoring module, it executes wavelength-switched optical network (WSON) technology or functions through the southbound interface. The southbound interface can be, for example, OpenConfig, and then updates the configuration of the Open All-Optical Network Transceiver (APN-T) in real time, that is, the switching of different wavelength paths.

[0052] In other embodiments, after the path obstacle of the original wavelength is eliminated, the dynamic configuration module can use telemetry to determine the circuit utilization rate. When the circuit utilization rate is low and it is in an off-peak period, the wavelength recovery procedure can be started so that the optical path can be restored to the original path. At this time, the dynamic configuration module will notify the dynamic routing monitoring module to switch back to the original wavelength path and simultaneously configure the open all-optical network transceiver to switch back to the original wavelength path.

[0053] In addition, the dynamic configuration module can use telemetry big data acquisition technology to clean and label massive amounts of data. In addition to quickly acquiring data, it can also reduce the amount of data through cleaning and labeling, thereby increasing the accuracy of telemetry technology.

[0054] Figure 4 is a step diagram of another embodiment of the method for controlling wavelength switching in an open all-optical network according to the present invention. In this embodiment, the wavelength switching method is defined from the perspective of the device.

[0055] In step S401, the dynamic routing monitoring module monitors the open all-optical network and receives alarm or wavelength switching messages. This step explains that the dynamic routing monitoring module monitors the network and receives alarm and wavelength switching messages to distinguish whether the service is faulty or recovering. If it is faulty, it will switch to a different wavelength path; if it is recovering, it will perform a wavelength recovery procedure.

[0056] Furthermore, when APN-I / APN-G / OTN are from the same manufacturer, WSON technology or functions can be used to find new or redundant wavelength paths or original wavelength paths. However, if the open all-optical transceiver (APN-T) is from a different manufacturer than the above, it cannot directly exchange messages. Therefore, the technology of this invention must be used to assist in adjusting the configuration.

[0057] In step S402, the dynamic routing monitoring module uses telemetry technology to detect changes in the routing status of the open all-optical network through the northbound interface of the Software Defined Networking (SDN) controller, thereby obtaining handover status information related to wavelength switching. This step explains that the dynamic routing monitoring module utilizes the equipment vendor's telemetry technology through the open interface of the SDN controller (such as TAPI and TMF API) to detect changes in routing status with second-level accuracy, capturing real-time information such as wavelength switching. In other words, the dynamic routing monitoring module obtains routing changes in the open all-optical network through the northbound interface, thereby generating handover status information. This handover status information will serve as the basis for subsequent infrastructure configuration.

[0058] In step S403, the dynamic configuration module is instructed to switch the Open All-Optical Network Transceiver (APN-T) in the Open All-Optical Network to the corresponding wavelength in real time based on the switching status information of the dynamic routing monitoring module. This step explains that the dynamic configuration module switches the Open All-Optical Network Transceiver (APN-T) to the corresponding wavelength through the switching wavelength provided by the dynamic routing monitoring module, which may further include the following two cases.

[0059] The first method involves immediately switching the open all-optical transceiver to a new or redundant wavelength path via the dynamic configuration module when an obstacle occurs in the original wavelength path.

[0060] In one embodiment, if the original wavelength path is blocked, it is necessary to switch to a new or redundant wavelength path and immediately use the dynamic configuration module to switch the APN-T to the corresponding wavelength.

[0061] The second method involves clearing path obstacles on the original wavelength, allowing the dynamic configuration module to capture circuit traffic through the southbound interface. When circuit utilization is low and it is off-peak time, the wavelength recovery procedure is initiated to notify the dynamic routing monitoring module to switch back to the original wavelength path and immediately switch the open all-optical transceiver to the original wavelength through the dynamic configuration module.

[0062] In one embodiment, if the original wavelength path obstacle has been cleared, it is necessary to switch to the original wavelength path. The dynamic configuration module captures the circuit traffic with second-level accuracy through the open interface (i.e., the south-facing interface). If the utilization rate is very low and it is during off-peak hours, the wavelength switching procedure is initiated, notifying the dynamic routing monitoring module to switch back to the original wavelength path first, and immediately using the dynamic configuration module to switch the APN-T to the corresponding wavelength.

[0063] Figure 5 is a flowchart of the operation of dynamic wavelength switching in the event of service failure according to the present invention, which includes at least: a system 1 for controlling wavelength switching of open all-optical network, APN-T 40, OTN 41 / APN-I 42 / APN-G 43, OTN network management 22, and APN-C 23.

[0064] In process 501, when the original optical path fails and affects the service circuit.

[0065] In process 502, the Open All-Optical Network Switch (APN-I) / Open All-Optical Network Gateway (APN-G) / Optical Transport Network (OTN) uses WSON technology or functions to switch services to a new path, allowing the wavelength path to switch from 192.5THz (terahertz) to a new / redundant wavelength path of 191.3THz.

[0066] In process 503, OTN management / APN-C 21 sends a notification to the dynamic routing monitoring module in the wavelength switching system of the open all-optical network, including optical path faults, service alarms, dynamic routing status and switching details.

[0067] In process 504, the system for controlling wavelength switching in the open all-optical network uses a dynamic configuration module to modify the faulty wavelength path of 192.5THz to a new / redundant wavelength path of 191.3THz.

[0068] Based on the above, the dynamic wavelength switching is completed in real time, and the service is restored.

[0069] Figure 6 is a flowchart of the operation of dynamic wavelength recovery during service restoration of the present invention, which includes at least: a system 1 for controlling wavelength switching of open all-optical networks, APN-T 40, OTN 41 / APN-I 42 / APN-G 43, OTN network management 22, and APN-C 23.

[0070] In process 601, when the faulty optical path resumes service, multiple cleared alarms will be reported to the OTN management / APN-C 21, indicating that the service has been restored and can be switched over. Subsequently, the OTN management / APN-C 21 sends a notification to the dynamic routing monitoring module in the system that manages wavelength switching of the open all-optical network, providing information about the restored optical path and the restored service.

[0071] In process 602, considering that the service will be temporarily interrupted during the switch to the original wavelength path, it is necessary to select an appropriate time to switch. The dynamic configuration module uses telemetry big data acquisition technology through the southbound interface to clean and label the massive amount of data, overcoming the problem of massive data acquisition, and extracting the traffic of key circuits with second-level accuracy. Furthermore, if the obstruction of the original wavelength path has been eliminated, and the circuit utilization is determined by telemetry to be in the off-peak period of the statistics, the wavelength recovery procedure can be initiated to notify the dynamic routing monitoring module to switch back to the original wavelength path. APN-I / APN-G / OTN will switch to the original path (i.e., the original path before the obstruction), that is, the wavelength path changes from 191.3THz to 192.5THz.

[0072] In process 603, the system for controlling wavelength switching in the open all-optical network uses a dynamic configuration module to modify the redundant wavelength path corresponding to 191.3THz to the original wavelength path corresponding to 192.5THz.

[0073] Based on the above, dynamic wavelength recovery is completed, and service is restored.

[0074] Furthermore, this invention discloses a computer-readable medium applied in a computing device or computer having a processor (e.g., CPU, GPU, etc.) and / or memory, storing instructions, and capable of being executed by the computing device or computer through the processor and / or memory to perform the aforementioned methods and steps when executing the computer-readable medium. In one embodiment, the computer-readable medium is a non-transitory computer-readable storage medium.

[0075] As can be seen from the above, the system, method, and computer-readable medium for controlling wavelength switching in open all-optical networks of the present invention can be applied to open all-optical networks, and have wavelength switching protection and recovery functions to ensure that the network can quickly recover and provide reliable service when a fault occurs. During operation, the switching status information and data are collected in real time through the dynamic routing monitoring module, and the configuration of the open all-optical network transceivers (i.e., wavelength path switching) is updated through the dynamic configuration module, thereby providing efficient quality assurance monitoring and management. In summary, the present invention has the following advantages.

[0076] First, it offers high flexibility. Different wavelengths can be dynamically allocated, enabling efficient utilization of network resources and greater flexibility in network design.

[0077] Second, resource optimization. By dynamically allocating wavelengths, network resources are optimally configured to ensure high-speed and low-latency connections, thereby improving network efficiency and reliability.

[0078] Third, scalability. It can be practically applied in real-world network environments and is compatible with equipment and technologies from different vendors.

[0079] The above detailed description is a specific description of one feasible embodiment of the present invention. However, this embodiment is not intended to limit the patent scope of the present invention. All equivalent implementations or modifications that do not depart from the spirit of the present invention should be included in the patent scope of the present invention.

[0080] 1: Controlling the wavelength switching system in open all-optical networks 11: Dynamic Routing Monitoring Module 12: Dynamic Configuration Module 20: Northbound 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: Process 601-603: Process S301-S303: Steps S401-S403: Steps

Claims

1. A system for controlling wavelength switching in an open all-optical network, comprising: The dynamic routing monitoring module is used to collect real-time information on the optical network status. When a change in the routing status of the optical network is detected due to path obstacles, it captures the path switching data in the routing status to generate switching status information. The dynamic configuration module is connected to the dynamic routing monitoring module. When the switching status information is received, it performs wavelength switching of the open all-optical network transceivers in the optical network according to the pre-stored circuit routing data, so that the open all-optical network transceivers switch to the wavelength corresponding to the new or redundant path.

2. The system for controlling wavelength switching in an open all-optical network as described in claim 1, wherein, The dynamic routing monitoring module obtains real-time information about the status of the optical network from the open all-optical network switch, open all-optical network gateway, or optical transport network in the optical network through the northbound interface of the software-defined network controller.

3. The system for controlling wavelength switching in an open all-optical network as described in claim 2, wherein, The northbound interface is either an optical transport network management system or an all-optical network controller.

4. The system for controlling wavelength switching in an open all-optical network as described in claim 2, wherein, When the open all-optical network switch, the open all-optical network gateway, and the open all-optical network transceiver are from different equipment vendors, the dynamic configuration module performs wavelength switching optical network technology through the southbound interface to enable the open all-optical network transceiver to switch to the corresponding wavelength.

5. The system for controlling wavelength switching in an open all-optical network as described in claim 1, wherein, After the path obstacle of the original wavelength is eliminated, the dynamic configuration module uses telemetry technology to determine that the circuit utilization rate is in the off-peak period. It then initiates a wavelength recovery procedure to notify the dynamic routing monitoring module to switch back to the original wavelength path and simultaneously cause the open all-optical network transceiver to switch to the original wavelength.

6. The system for controlling wavelength switching in an open all-optical network as described in claim 5, wherein, This dynamic configuration module utilizes telemetry massive data acquisition technology to clean and label massive amounts of data in order to achieve the telemetry accuracy of this telemetry technology.

7. A method for controlling wavelength switching in an open all-optical network, comprising the following steps: having a dynamic routing monitoring module collect real-time information on the optical network status; when the dynamic routing monitoring module detects a change in the routing status of the optical network due to path obstacles, capturing path switching data from the routing status to generate switching status information; and when a dynamic configuration module receives the switching status information, performing wavelength switching of the open all-optical network transceivers in the optical network based on pre-stored circuit routing data, so that the open all-optical network transceivers switch to the wavelength corresponding to the new or redundant path.

8. The method for controlling wavelength switching in an open all-optical network as described in claim 7, wherein, The step of enabling the dynamic routing monitoring module to collect real-time information on the optical network status includes: enabling the dynamic routing monitoring module to obtain real-time information on the optical network status from the open all-optical network switch and open all-optical network gateway or optical transport network in the optical network through the northbound interface of the software-defined network controller.

9. The method for controlling wavelength switching in an open all-optical network as described in claim 8, wherein, The northbound interface is either an optical transport network management system or an all-optical network controller.

10. The method for controlling wavelength switching in an open all-optical network as described in claim 8, wherein, The step of performing wavelength switching of the open all-optical network transceiver in the optical network includes: when the open all-optical network switch and the open all-optical network gateway are from different equipment manufacturers than the open all-optical network transceiver, the dynamic configuration module performs wavelength switching optical network technology through the southbound interface to enable the open all-optical network transceiver to switch to the corresponding wavelength.

11. The method for controlling wavelength switching in an open all-optical network as described in claim 7 further includes: After the path obstacle of the original wavelength is eliminated, the dynamic configuration module uses telemetry to determine that the circuit utilization rate is in the off-peak period. It then initiates a wavelength recovery procedure to notify the dynamic routing monitoring module to switch back to the original wavelength path and simultaneously switch the open all-optical network transceiver to the original wavelength.

12. The method for controlling wavelength switching in an open all-optical network as described in claim 11, wherein, This dynamic configuration module utilizes telemetry massive data acquisition technology to clean and label massive amounts of data in order to achieve the telemetry accuracy of this telemetry technology.

13. A method for controlling wavelength switching in an open all-optical network, comprising the following steps: having a dynamic routing monitoring module monitor the open all-optical network and receive alarm or wavelength switching messages; having the dynamic routing monitoring module use telemetry technology to detect changes in the routing status of the open all-optical network through the northbound interface of a software-defined network controller to obtain switching status information related to wavelength switching; and having a dynamic configuration module, based on the switching status information from the dynamic routing monitoring module, to instantly switch the open all-optical network transceivers in the open all-optical network to the corresponding wavelength.

14. The method for controlling wavelength switching in an open all-optical network as described in claim 13, wherein, The step of instantly switching the open all-optical network transceiver to the corresponding wavelength in the open all-optical network includes: when an obstacle occurs on the path of the original wavelength, instantly switching the open all-optical network transceiver to the wavelength of a new or redundant path through the dynamic configuration module; or when the obstacle on the path of the original wavelength is cleared, having the dynamic configuration module capture circuit traffic through the southbound interface, and initiating a wavelength recovery procedure during periods of low circuit utilization and off-peak hours, so as to notify the dynamic routing monitoring module to switch back to the original wavelength path, and instantly switching the open all-optical network transceiver to the original wavelength through the dynamic configuration module.

15. A computer-readable medium, applied in a computing device or computer, storing instructions for performing a method for controlling wavelength switching of an open all-optical network as described in any one of claims 7 to 14.

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