An optical transport network device and a method for determining service data

Abstract

The present invention provides an optical transport network device and a method for determining service data. The device includes a first service unit configured to receive first service data and protection data of the first service data, and perform mapping processing on the first service data and the protection data; a protection switching detector configured to detect the alarm status of the first service data and the protection data after the mapping processing, and send the alarm status information to a protection switching controller, where the protection switching controller is configured to make a protection switching decision according to the alarm status information to obtain a protection switching decision result; and a selection and reception unit configured to determine target service data from the first service data and the protection data according to the decision result. By means of the present invention, the problem of low service protection efficiency of OTN devices in the related art is solved, and the effect of improving service protection efficiency is achieved.

Description

Technical Field

[0001] The present invention relates to the field of communications, and in particular, to an optical transport network device and a method for determining service data. Background Art

[0002] In related technologies, the method for an optical transport network (OTN) device to implement protection for packet services and SDH services is mainly to equip packet service and SDH service protection line cards, and implement alarm detection and protection switching at the packet service layer and SDH service layer in the OTN device through these protection line cards. Its system device composition and working principle are as Figure 1 and Figure 2 shown, Figure 1 which is a schematic structural diagram of a packet and SDH service protection system in related technologies; Figure 2 which is a schematic diagram of the protection principle of a packet and SDH service protection system in related technologies. Among them, after the packet service and SDH service are accessed to the OTN device through the service access line card, they also need to be exchanged to the service scheduling protection line card through the ODUk service switching board for protection processing, and then sent to the OTN line-side single board through the backplane for optical transmission. The current such scheme mainly has several disadvantages: high equipment cost, complex structure, large delay in service switching processing, complex processing flow, and can only implement alarm detection and protection switching for corresponding services at the service layer, resulting in low service protection efficiency.

[0003] Regarding the problem of low service protection efficiency of OTN devices in related technologies, there is no solution yet. Summary of the Invention

[0004] Embodiments of the present invention provide an optical transport network device and a method for determining service data to at least solve the problem of low service protection efficiency of OTN devices in related technologies.

[0005] According to an embodiment of the present invention, an optical transport network device is provided, including:

[0006] A first service unit, configured to receive first service data and protection data of the first service data, and perform mapping processing on the first service data and the protection data;

[0007] A protection switching detector, configured to detect an alarm state of the first service data and the protection data after mapping processing, and send alarm state information to a protection switching controller, where the alarm state information is used to indicate the alarm state of the first service data and the protection data;

[0008] The protection switching controller is configured to make a protection switching decision based on the alarm status information to obtain a protection switching decision result;

[0009] The selection and reception unit is configured to determine target service data from the first service data and the protection data according to the decision result.

[0010] Optionally, the optical transport network device further includes: a second service unit, configured to, after receiving the first service data, send the first service data and the protection data of the first service data to the first service unit, where the protection data is obtained by the second service unit copying the first service data according to protection configuration information.

[0011] Optionally, the second service unit is further configured to send the received first service data to the first service unit through a working channel, and send the protection data to the first service unit through a protection channel.

[0012] Optionally, the optical transport network device further includes: a service access unit, configured to receive a first service, perform adaptation processing on the first service to obtain the first service data, and send the first service data to the second service unit.

[0013] Optionally, the optical transport network device further includes: a protection switching actuator, configured to receive the protection switching decision result sent by the protection switching controller, and send the protection switching decision result to the selection and reception unit.

[0014] Optionally, the selection and reception unit is the first service unit or the second service unit.

[0015] According to another embodiment of the present invention, a method for determining service data is provided, which is applied to an optical transport network device and includes:

[0016] Using a first service unit to perform mapping processing on the received first service data and the protection data of the first service data;

[0017] Using a protection switching detector to detect the alarm status of the first service data and the protection data after the mapping processing to obtain alarm status information, where the alarm status information is used to indicate the alarm status of the first service data and the protection data;

[0018] Using a protection switching controller to make a protection switching decision according to the alarm status information to obtain a protection switching decision result;

[0019] Using a selection and reception unit to determine target service data from the first service data and the protection data according to the decision result.

[0020] Optionally, before mapping the received first service data and the protection data of the first service data by using the first service unit, it further includes: receiving the first service data by using a second service unit, and after receiving the first service data, sending the first service data and the protection data of the first service data to the first service unit, where the protection data is obtained by the second service unit copying the first service data according to protection configuration information.

[0021] Optionally, sending the first service data and the protection data of the first service data to the first service unit includes: sending the received first service data to the first service unit by using the second service unit through a working channel, and sending the protection data to the first service unit by using the second service unit through a protection channel.

[0022] Optionally, before receiving the first service data by using the second service unit, the method further includes: receiving a first service by using a service access unit, adapting the first service to obtain the first service data, and sending the first service data to the first service unit.

[0023] Optionally, the method further includes: receiving the protection switching decision result sent by the protection switching controller by using a protection switching actuator, and sending the protection switching decision result to the selective receiving unit.

[0024] Optionally, determining target service data from the first service data and the protection data by using the selective receiving unit according to the decision result includes:

[0025] determining target service data from the first service data and the protection data by using the first unit according to the decision result; or,

[0026] determining target service data from the first service data and the protection data by using the second unit according to the decision result.

[0027] Through the present invention, since the first service unit performs mapping processing on the first service data and the protection data of the first service data; the detector detects the alarm status of the first service data and the protection data after the mapping processing, and sends the alarm status information to the protection switching controller, and the protection switching controller makes a protection switching decision according to the alarm status information to obtain a protection switching decision result; the selection and reception unit determines the target service data from the first service data and the protection data according to the decision result. Since the alarm detection is performed on the service data after the mapping processing, then the decision is made by the controller, and then the selection and reception unit performs protection switching on the first service data and the protection data according to the decision result, eliminating the design of the SDH service scheduling protection line card and the packet service scheduling protection line card in the related art. Therefore, the problem of low service protection efficiency in the OTN device in the related art can be solved, and the effect of improving the service protection efficiency can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0029] Figure 1 is a schematic structural diagram of a packet and SDH service protection system in the related art;

[0030] Figure 2 is a schematic diagram of the protection principle of a packet and SDH service protection system in the related art;

[0031] Figure 3 is a block diagram of an optical transport network device according to an embodiment of the present invention;

[0032] Figure 4 is a flowchart of a method for determining service data according to an embodiment of the present invention;

[0033] Figure 5 is a schematic diagram of the protection principle of a packet and SDH service according to an optional embodiment of the present invention;

[0034] Figure 6 is a schematic structural diagram of an OTN device system according to an optional embodiment of the present invention;

[0035] Figure 7 is a flowchart of a packet service protection method according to an optional embodiment of the present invention;

[0036] Figure 8 is a flowchart of a packet service protection method according to an optional embodiment of the present invention;

[0037] Figure 9It is a flowchart of the SDH service protection method according to an alternative embodiment of the present invention. Detailed implementation manners

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence.

[0040] Embodiment 1

[0041] It should be noted that, as used hereinafter, the term "module" or "unit" is a combination of software and / or hardware that can implement a predetermined function. The devices described in the following embodiments can be implemented in software, or in hardware, or a combination of software and hardware is also possible and contemplated.

[0042] In this embodiment, an optical transport network device is provided. Figure 3 It is a structural block diagram of the optical transport network device according to an embodiment of the present invention, as Figure 3 shown, including:

[0043] A first service unit 31, configured to receive first service data and protection data of the first service data, and perform mapping processing on the first service data and the protection data;

[0044] A protection switching detector 33, configured to detect the alarm status of the first service data and the protection data after the mapping processing, and send the alarm status information to a protection switching controller, where the alarm status information is used to indicate the alarm status of the first service data and the protection data;

[0045] A protection switching controller 35, configured to make a protection switching decision according to the alarm status information to obtain a protection switching decision result;

[0046] A selective reception unit 37, configured to determine target service data from the first service data and the protection data according to the decision result.

[0047] Through the above-mentioned unit, since the first service unit performs mapping processing on the first service data and the protection data of the first service data; the detector detects the alarm status of the first service data and the protection data after the mapping processing, and sends the alarm status information to the protection switching controller, and the protection switching controller makes a protection switching decision according to the alarm status information to obtain a protection switching decision result; the selection and reception unit determines the target service data from the first service data and the protection data according to the decision result. Since the alarm detection is performed on the service data after the mapping processing, and then the decision is made by the controller, and then the selection and reception unit performs protection switching on the first service data and the protection data according to the decision result, the design of the SDH service scheduling protection line card and the packet service scheduling protection line card in the related technology is eliminated. Therefore, the problem of low service protection efficiency in the OTN device in the related technology can be solved, and the effect of improving the service protection efficiency can be achieved.

[0048] It should be noted that the mapping processing of the first service data and the protection data may be to map the service data into another service, so that the alarm detection can be realized at the level of the other service and the protection switching can be realized at the service levels of the first service data and the protection data; or, the mapping processing of the first service data and the protection data may be to map different types of service data into the same type of service, so that the alarm detection can be realized at the level of the same type of service and the protection switching can be realized at the respective service levels of different categories of the first service data and the protection data; for example, mapping the packet service and / or the SDH service and their respective protection service data into the ODUk service can realize the alarm detection at the ODUk service level, and at the respective service levels, that is, at the packet service and SDH service levels respectively, the protection switching can be realized.

[0049] In an optional embodiment, the optical transport network device further includes: a second service unit, configured to send the first service data and the protection data of the first service data to the first service unit after receiving the first service data, where the protection data is obtained by the second service unit copying the first service data according to the protection configuration information.

[0050] In an optional embodiment, the second service unit is further configured to send the received first service data to the first service unit through the working channel, and send the protection data to the first service unit through the protection channel.

[0051] In an optional embodiment, the optical transport network device further includes: a service access unit, configured to receive the first service, perform adaptation processing on the first service to obtain the first service data, and send the first service data to the second service unit.

[0052] In an alternative embodiment, the optical transport network device further includes: a protection switching actuator, configured to receive the protection switching decision result sent by the protection switching controller and send the protection switching decision result to the selective receiving unit.

[0053] In an alternative embodiment, the selective receiving unit is the first service unit or the second service unit.

[0054] It should be noted that the above-mentioned various modules or units can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited thereto: the above-mentioned modules or units are all located in the same processor; or, the above-mentioned various modules or units are respectively located in different processors in any combination form.

[0055] An embodiment of the present invention further provides a method for determining service data, which can be applied to an optical transport network device. Figure 4 It is a flowchart of the method for determining service data according to the embodiment of the present invention, as Figure 4 shown, including:

[0056] Step S402: Use the first service unit to perform mapping processing on the received first service data and the protection data of the first service data.

[0057] Step S404: Use the protection switching detector to detect the alarm status of the first service data and the protection data after the mapping processing, and obtain alarm status information, where the alarm status information is used to indicate the alarm status of the first service data and the protection data.

[0058] Step S406: Use the protection switching controller to make a protection switching decision according to the alarm status information, and obtain a protection switching decision result.

[0059] Step S408: Use the selective receiving unit to determine the target service data from the first service data and the protection data according to the decision result.

[0060] Through the above steps, since the first service unit is used to perform mapping processing on the first service data and the protection data of the first service data; the detector is used to detect the alarm status of the first service data and the protection data after the mapping processing, and send the alarm status information to the protection switching controller, and the protection switching controller is used to make a protection switching decision according to the alarm status information to obtain a protection switching decision result; the selection and reception unit is used to determine the target service data from the first service data and the protection data according to the decision result. Since the alarm detection is performed on the service data after the mapping processing, then the decision is made by the controller, and then the selection and reception unit performs protection switching on the first service data and the protection data according to the decision result, eliminating the design of the SDH service scheduling protection line card and the packet service scheduling protection line card in the related technology. Therefore, the problem of low service protection efficiency in the OTN device in the related technology can be solved, and the effect of improving the service protection efficiency can be achieved.

[0061] In an optional embodiment, before using the first service unit to perform mapping processing on the received first service data and the protection data of the first service data, it further includes: using the second service unit to receive the first service data, and after receiving the first service data, sending the first service data and the protection data of the first service data to the first service unit, where the protection data is copied from the first service data by the second service unit according to the protection configuration information.

[0062] In an optional embodiment, sending the first service data and the protection data of the first service data to the first service unit includes: using the second service unit to send the received first service data to the first service unit through the working channel, and using the second service unit to send the protection data to the first service unit through the protection channel.

[0063] In an optional embodiment, before using the second service unit to receive the first service data, the method further includes: using the service access unit to receive the first service, adaptively process the first service to obtain the first service data, and send the first service data to the first service unit.

[0064] In an optional embodiment, the method further includes: using the protection switching actuator to receive the protection switching decision result sent by the protection switching controller, and sending the protection switching decision result to the selection and reception unit.

[0065] In an optional embodiment, using the selection and reception unit to determine the target service data from the first service data and the protection data according to the decision result includes:

[0066] Using the first unit to determine the target service data from the first service data and the protection data according to the decision result; or,

[0067] Use a second unit to determine target service data from first service data and protected data according to the decision result.

[0068] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation. Based on such an understanding, the technical solution of the present invention, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to enable a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in various embodiments of the present invention.

[0069] Optional implementation

[0070] An embodiment of the present invention relates to a method for implementing alarm detection at the ODUk service level and implementing protection switching at the packet service and SDH service levels in an OTN device that can simultaneously process three services: OTN, packet, and SDH. An embodiment of the present invention proposes a method for implementing alarm detection at the ODUk service level and then performing protection switching at the packet and SDH service levels on an OTN device with mixed transmission of three services.

[0071] The principle of the embodiment of the present invention is as Figure 5 shown. The packet service and SDH service accessed by the OTN system are accessed in the packet service and SDH service planes, and then scheduled to the three-mixed service line card through the OTN / packet / SDH service mixed switching plane. Alarm is detected at the ODUk service level carrying the packet and SDH services, and protection switching of the packet service and SDH service is performed on the mixed switching plane.

[0072] The basic functional units of the embodiment of the present invention include a packet service access unit, an SDH service access unit, a mixed service switching unit, a mixed service processing unit, an SDH service processing unit, and an APS protection switching component. Their composition relationship is as Figure 6 , Figure 7 , Figure 8 and Figure 9 .

[0073] The packet service access unit is a client-side adaptation processing unit that realizes the access of the packet service to the OTN device. In the embodiment of the present invention, it does not directly participate in the specific packet service protection processing process.

[0074] The SDH service access unit is a client - side adaptation processing unit that realizes the access of SDH services to OTN devices. After being processed by it, the SDH service is sent to the hybrid service switching unit for cross - scheduling, and then through the SDH service processing unit and the hybrid service processing unit to complete service encapsulation and decapsulation processing. Together with the protection switching (Automatic Protection Switching, APS) component, they cooperate to complete the protection switching action of SDH.

[0075] The hybrid service switching unit is a key entity that realizes the cross - scheduling of OTN services, packet services, and SDH services in the three - hybrid service transmission OTN device. Under the control of the protection component, it cooperates with the hybrid service processing unit to complete the protection of packet services and SDH.

[0076] The SDH service processing unit is an auxiliary processing unit that processes SDH services on the hybrid service line card. As a supplement to the hybrid service processing unit for SDH service processing, its participation is required for the protection switching processing of SDH services, and it does not participate in the processing process of packet services.

[0077] The APS protection switching component is a control unit that executes the protection switching of packet services and SDH services. It mainly includes three functional entities: an alarm detector, a protection controller, and a protection actuator, which are respectively located on the hybrid switching line card and the hybrid service line card.

[0078] The main feature of the embodiment of the present invention is that both SDH services and OTN services are directly scheduled through the hybrid cross - board. Alarm detection is executed at the ODUk service level on the hybrid service processing line card, and the protection switching processing of SDH services and packet services is executed on the hybrid service line card or the hybrid service switching card.

[0079] In an alternative embodiment, SDH services and packet services are respectively adapted through the SDH service and packet service access line cards, and then sent to the hybrid service switching line card through the backplane for service cross - scheduling; after being processed by the hybrid switching line card, the service is sent to the hybrid service line card through the backplane for service mapping, encapsulation, and alarm detection. If the hybrid service line card detects an ODUk - level alarm in the ODUk service encapsulating SDH services and packet services, it notifies the protection controller on the switching line card. The protection controller calculates the working and protection paths and notifies the hybrid service line card to execute the protection switching of SDH and packet services.

[0080] The method of the embodiment of the present invention can solve the problem that the current OTN devices for mixed transmission of three services cannot efficiently and quickly protect packet services and SDH services. At the same time, the implementation of this method can achieve the protection deployment of mixed services by software upgrade and adding new mixed service line cards without replacing the existing packet and SDH service access line cards.

[0081] In the embodiment of the present invention, alarm detection is performed at the ODUk layer, but service protection switching is performed at the packet service and SDH service layers, realizing cross-plane alarm detection and protection switching, which is not available in the existing packet and SDH service protection switching.

[0082] The following further explains the embodiments of the present invention in conjunction with the accompanying drawings and optional implementation examples.

[0083] Optional Embodiment 1

[0084] Figure 7 It is a flowchart of the packet service protection method according to an optional embodiment of the present invention. This embodiment mainly describes the protection processing flow of packet services. The specific processing flow is shown in the appendix Figure 7 :

[0085] Step 1, after being adaptively processed by the packet service access unit (equivalent to the service access unit in the above embodiment), the packet service is sent to the hybrid switching unit for scheduling and forwarding processing.

[0086] Step 2, the packet switching unit (equivalent to the second service unit in the above embodiment) copies a piece of data received from the packet service access unit into two copies according to the protection configuration information and sends them to the working and protection hybrid service processing unit through the working and protection channels.

[0087] Step 3, the working and protection hybrid service processing unit (equivalent to the first service unit in the above embodiment) maps the packet data into the ODUk service. The APS alarm collector (i.e., the APS detector in the figure, equivalent to the protection switching detector in the above embodiment) on the hybrid service processing line card will detect the alarm status of the ODUk service carrying the packet service in real time and send the alarm status to the APS controller on the hybrid cross-connect board (equivalent to the protection switching controller in the above embodiment) for protection switching decision-making. The decision result output by the APS controller is sent to the hybrid service switching unit through the APS actuator.

[0088] The above describes the dual-transmission process from the packet service access line card to the hybrid service processing line card. The following continues to describe the selective reception process from the working and protection hybrid service processing line card to the customer packet line card.

[0089] Step 4: The hybrid service processing line card for work and protection demaps the packet data from the ODUk and sends it to the hybrid cross-connect board.

[0090] Step 5: The switching processing unit on the hybrid cross-connect board (equivalent to the selective reception unit in the above embodiment) selects the packet service on the working path according to the decision result of the APS controller and sends it to the packet service access unit. For example, the packet data on the protection path is discarded, and the selective reception process of the work and protection packet services is completed.

[0091] The innovation of this embodiment lies in that the packet service directly goes down the backplane, undergoes scheduling by the hybrid service switching line card, and realizes the dual transmission and selective reception processing of the packet service on the hybrid service processing line card.

[0092] Alternative Embodiment 2

[0093] Figure 8 It is a flowchart of the packet service protection method according to an alternative embodiment of the present invention, which describes a method of transferring the APS protection switching selective reception execution action to the hybrid service processing unit for processing. This embodiment is Figure 7 a variant method of the embodiment shown in Figure 7 and its feature compared with the embodiment shown in Figure 8 is that it saves the packet data bandwidth of the backplane. As shown in

[0094] Step 1: After the packet service is adaptively processed by the packet service access unit (equivalent to the service access unit in the above embodiment), it will be sent to the hybrid switching unit for scheduling and forwarding processing.

[0095] Step 2: The packet switching unit (equivalent to the second service unit in the above embodiment) copies the original packet data received from the packet service access unit into two copies according to the protection configuration information and sends them to the hybrid service processing units for work and protection through the working and protection paths respectively.

[0096] Step 3: The hybrid service processing unit for work and protection (equivalent to the first service unit in the above embodiment) maps the received packet data into the ODUk service. The APS alarm collector located on the hybrid service processing line card (i.e., the APS detector in the figure, equivalent to the protection switching detector in the above embodiment) will detect the alarm status of the ODUk service carrying the packet service in real time and send the alarm status to the APS controller located on the hybrid cross-connect board for protection switching decision-making. The decision result output by the APS controller (equivalent to the protection switching controller in the above embodiment) is sent to the hybrid service switching unit through the APS executor.

[0097] The above describes the dual - transmission process from the packet service access line card to the hybrid service processing line card. The following continues to describe the selective - reception process of the working and protection hybrid service processing line card to the customer packet line card.

[0098] Step 4: The working and protection hybrid service processing line card (equivalent to the selective - reception unit in the above - mentioned embodiment) demaps the encapsulated packet data from the ODUk, and according to the decision result of the APS controller, selects the packet data of the working path from the working and protection paths and sends it to the packet service switching unit. The packet data of the protection path will be discarded, thus completing the selective - reception process of the packet service for the working and protection paths.

[0099] Step 5: The switching processing unit on the hybrid cross - board forwards the received packet data to the packet access unit.

[0100] The main difference between this method and the first optional implementation manner lies in the processing of the selectively - received data in Step 4. The first optional implementation manner will occupy more packet service backplane switching bandwidth, and the second optional implementation manner can solve half of the packet service switching bandwidth.

[0101] Optional implementation manner three

[0102] This implementation manner mainly describes the protection processing flow of the SDH service for the method of the present invention. Figure 9 It is a flowchart of the SDH service protection method according to an optional embodiment of the present invention, as Figure 9 shown:

[0103] Step 1: After being processed by the SDH service access unit (equivalent to the service access unit in the above - mentioned embodiment), the SDH service will be sent to the hybrid switching unit for scheduling and forwarding processing.

[0104] Step 2: The hybrid service switching unit sends the original SDH data received from the SDH service access unit to the downstream SDH service processing unit according to the protection switching configuration.

[0105] Step 3: The SDH service processing unit (equivalent to the second service unit in the above - mentioned embodiment) duplicates the SDH service received from the hybrid service switching board into two copies and sends them to the hybrid service processing unit from the working and protection paths respectively, thus completing the dual - transmission of the SDH service.

[0106] Step 4, the hybrid service processing unit (equivalent to the first service unit in the above embodiment) maps and encapsulates the received working and protected SDH services into ODUk signals and then can be transmitted in the OTN network. The APS alarm collector located on the hybrid service processing line card (i.e., the APS detector in the figure, equivalent to the protection switching detector in the above embodiment) will detect the alarm status of the ODUk service plane carrying the SDH service in real time and send it to the APS controller located on the hybrid cross-connect board (equivalent to the protection switching controller in the above embodiment) for protection switching decision-making. The decision result output by the APS controller is sent to the hybrid service switching unit through the APS actuator.

[0107] The above describes the dual-transmission process from the SDH service access line card to the hybrid service processing line card. The following will describe the selective reception process from the working and protected hybrid service processing line card to the SDH line card.

[0108] Step 5, the working and protected hybrid service processing line card (equivalent to the selective reception unit in the above embodiment) demaps the SDH data from the ODUk and selects the SDH data on the working path according to the decision result of the APS controller and sends it to the hybrid service switching unit, which forwards the SDH data to the SDH service processing unit through it; the SDH data on the protection path will be discarded by the SDH service processing unit, thus completing the selective reception process of the working protection signal.

[0109] Step 6, the SDH service processing unit sends the SDH service on the working path selected by the APS module decision to the hybrid service switching unit.

[0110] Step 7, the hybrid service switching unit sends the received SDH service to the SDH service access unit on the SDH service access board for processing.

[0111] Step 8, the SDH service processing unit sends the SDH service received from the hybrid service switching unit to the docking SDH packet device.

[0112] The embodiments of the present invention mainly describe a method for detecting the alarm status at the ODUk service level and implementing protection in the packet service plane and the SDH service plane on an OTN device for hybrid transmission of three services. The embodiments of the present invention can also perform protection of packet services and SDH services on the hybrid service switching card or the hybrid service processing line card according to the backplane bandwidth capability. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and deformations should all fall within the protection scope of the claims attached to the method of the present invention.

[0113] Obviously, those skilled in the art should understand that the various modules, units or steps of the present invention described above can be implemented by a general-purpose computing device. They can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Optionally, they can be implemented by program code executable by the computing device. Thus, they can be stored in a storage device and executed by the computing device. And in some cases, the steps shown or described can be executed in a different order from here, or they can be separately fabricated into individual integrated circuit modules, or multiple modules or steps among them can be fabricated into a single integrated circuit module for implementation. In this way, the present invention is not limited to any specific combination of hardware and software.

[0114] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An optical transport network device, characterized in that, including: a first service unit, configured to receive first service data and protection data of the first service data, and map the first service data and the protection data into another service; a protection switching detector, configured to detect an alarm status of the first service data and the protection data after mapping processing, and send alarm status information to a protection switching controller, where the alarm status information is used to indicate the alarm status of the first service data and the protection data; the protection switching controller, configured to make a protection switching decision according to the alarm status information to obtain a protection switching decision result; a selective receiving unit, configured to determine target service data from the first service data and the protection data according to the decision result.

2. The optical transmission network device according to claim 1, wherein The optical transport network device further includes: a second service unit, configured to, after receiving the first service data, send the first service data and the protection data of the first service data to the first service unit, where the protection data is copied from the first service data by the second service unit according to protection configuration information.

3. The optical transport network device according to claim 2, wherein The second service unit is further configured to send the received first service data to the first service unit through a working channel, and send the protection data to the first service unit through a protection channel.

4. The optical transport network device according to claim 2, wherein It further includes: a service access unit, configured to receive a first service, perform adaptation processing on the first service to obtain the first service data, and send the first service data to the second service unit.

5. The optical transport network device according to claim 1, wherein It further includes: a protection switching executor, configured to receive the protection switching decision result sent by the protection switching controller, and send the protection switching decision result to the selective receiving unit.

6. The optical transport network device according to any one of claims 1 to 5, characterized in that, The selective receiving unit is the first service unit or the second service unit.

7. A method for determining service data, characterized in that, Applied to an optical transport network device, it includes: using a first service unit to map received first service data and protection data of the first service data into another service; using a protection switching detector to detect an alarm status of the first service data and the protection data after mapping processing to obtain alarm status information, where the alarm status information is used to indicate the alarm status of the first service data and the protection data; using a protection switching controller to make a protection switching decision according to the alarm status information to obtain a protection switching decision result; using a selective receiving unit to determine target service data from the first service data and the protection data according to the decision result.

8. The method according to claim 7, wherein Before using the first service unit to perform mapping processing on received first service data and protection data of the first service data, it further includes: using a second service unit to receive the first service data, and after receiving the first service data, send the first service data and the protection data of the first service data to the first service unit, where the protection data is copied from the first service data by the second service unit according to protection configuration information.

9. The method according to claim 8, wherein Sending the first service data and the protection data of the first service data to the first service unit includes: sending the received first service data to the first service unit through a working channel by using the second service unit, and sending the protection data to the first service unit through a protection channel by using the second service unit.

10. The method according to claim 8, wherein Before receiving the first service data by using the second service unit, the method further includes: Receiving a first service by using a service access unit, adapting and processing the first service to obtain the first service data, and sending the first service data to the first service unit.

11. The method according to claim 7, wherein The method further includes: Receiving the protection switching decision result sent by the protection switching controller by using a protection switching actuator, and sending the protection switching decision result to the selective receiving unit.

12. The method according to any one of claims 7 to 11, characterized in that, Determining target service data from the first service data and the protection data by using a selective receiving unit according to the decision result includes: Determining target service data from the first service data and the protection data by using the first service unit according to the decision result; or, Determining target service data from the first service data and the protection data by using a second service unit according to the decision result.

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