Subcarrier management method, data transmission method, communication node, and storage medium

Abstract

The present application discloses a subcarrier management method, a data transmission method, a communication node, and a storage medium. The method is applied to a management-end communication node, and comprises: maintaining and managing a subcarrier by means of subcarrier label information. In an application process where a client service signal is directly modulated onto the subcarrier at an optical layer for networking to simplify a network hierarchy, the subcarrier label information is added to each modulated subcarrier, so as to perceive, maintain, and intervene in a service signal transmission process at a subcarrier level by means of the subcarrier label information carried by the subcarrier. The present application solves the problem of lacking information perception management at the subcarrier level in an optical subcarrier application process, and improves the application effect of an optical-layer subcarrier networking architecture.

Description

Subcarrier management methods, data transmission methods, communication nodes and storage media Technical Field

[0001] This application relates to the field of communication technology, and in particular to a subcarrier management method, a data transmission method, a communication node, and a storage medium. Background Technology

[0002] With the maturity of optical carrier technology, a point-to-multipoint (P2MP) network communication architecture has emerged, possessing multiple service access capabilities. It can directly modulate customer service electrical signals onto subcarriers, thereby simplifying network layers, reducing network investment, and streamlining network maintenance. For example, in metropolitan area network aggregation and data center interconnection applications, it can improve spectrum resource utilization and save energy, while also providing elastic scalability; in broadband service scenarios, it can save fiber optic cables, reducing network construction and maintenance costs; and in government and enterprise networks, it can provide low-latency and bandwidth-guaranteed services.

[0003] Currently, the optical layer can manage the optical channel interface (OCh), optical multiplexing segment (OMS), and optical transmission segment (OTS) layers through the optical supervisory channel (OSC) or optical tags. The electrical layer also has a mature operation administration and maintenance (OAM) mechanism and overhead for maintenance management. However, the above management methods are all carrier-level maintenance management and cannot identify subcarrier-level information. This results in a lack of effective means for subcarrier-based maintenance management, affecting the application effect of the optical layer P2MP architecture. Summary of the Invention

[0004] This application provides a subcarrier management method, a data transmission method, a communication node, and a storage medium to solve the problem of lack of information perception at the subcarrier level in optical subcarrier applications, realize maintenance and management at the subcarrier level, and improve the application effect of the optical layer P2MP architecture.

[0005] To achieve the above objectives, embodiments of this application provide a subcarrier management method, applied to a management communication node, comprising:

[0006] Subcarriers are maintained and managed using subcarrier tag information.

[0007] To achieve the above objectives, embodiments of this application provide a data transmission method applied to a sending communication node, comprising:

[0008] The received customer signals are modulated onto digital subcarriers of different frequencies;

[0009] The signal is converted for each digital subcarrier, and the resulting optical signal is sent to the receiving communication node;

[0010] The optical signal includes analog subcarriers corresponding to each digital subcarrier, and subcarrier tag information corresponding to each analog subcarrier.

[0011] To achieve the above objectives, embodiments of this application provide a data transmission method applied to a receiving communication node, comprising:

[0012] The received optical signal is converted into multiple digital subcarriers and the subcarrier tag information corresponding to each digital subcarrier;

[0013] Demap each digital subcarrier into a customer signal;

[0014] The optical signal includes analog subcarriers corresponding to each digital subcarrier, as well as subcarrier tag information corresponding to each analog subcarrier.

[0015] To achieve the above objectives, embodiments of this application provide a communication node, including: a memory, a processor, a program stored in the memory and executable on the processor, and a data bus for implementing communication between the processor and the memory. When the program is executed by the processor, it implements the steps of the subcarrier management method or data transmission method as described in any of the embodiments of this application.

[0016] To achieve the above objectives, embodiments of this application provide a storage medium for computer-readable storage. The storage medium stores one or more programs, which can be executed by one or more processors to implement the steps of any of the subcarrier management method or data transmission method of the embodiments of this application.

[0017] To achieve the above objectives, embodiments of this application provide a computer program product, including a computer program, which, when executed by a processor, implements the steps of any of the subcarrier management method or data transmission method of embodiments of this application.

[0018] The subcarrier management method, data transmission method, communication node, and storage medium provided in this application maintain and manage subcarriers through subcarrier tag information. In the process of directly modulating customer service signals onto subcarriers in optical layer networking to simplify network layer applications, subcarrier tag information is added to each modulated subcarrier. This allows for perception and maintenance intervention of the service signal transmission process at the subcarrier level through the subcarrier tag information carried by the subcarriers. This solves the problem of lacking information perception and management at the subcarrier level in optical subcarrier applications and improves the application effect of optical layer subcarrier networking architecture. Attached Figure Description

[0019] Figure 1 is an example architecture diagram of an optical layer carrier network provided in an embodiment of this application;

[0020] Figure 2 is a flowchart illustrating a subcarrier management method provided in an embodiment of this application;

[0021] Figure 3 is a structural example diagram of a subcarrier management system provided in an embodiment of this application;

[0022] Figure 4 is a timing example diagram of structural maintenance and management of optical layer subcarrier networking through subcarrier identification information provided in an embodiment of this application;

[0023] Figure 5 is a timing example diagram of an embodiment of this application for managing the on-path service activation of optical layer subcarrier networking through subcarrier service mapping information;

[0024] Figure 6 is a timing example diagram of fault management of optical subcarrier networking through local fault indication information and remote control indication information provided in an embodiment of this application;

[0025] Figure 7 is a flowchart illustrating a data transmission method provided in an embodiment of this application;

[0026] Figure 8 is a timing example diagram of managing optical layer subcarrier networking when there is no customer signal input, provided by an embodiment of this application;

[0027] Figure 9 is a timing example diagram of managing optical layer subcarrier networking when the optical path connection is interrupted, according to an embodiment of this application.

[0028] Figure 10 is a timing example diagram of managing optical subcarrier networking when the management terminal monitoring is interrupted, according to an embodiment of this application.

[0029] Figure 11 is a flowchart illustrating a data transmission method provided in an embodiment of this application;

[0030] Figure 12 is a structural example diagram of a subcarrier management system provided in an embodiment of this application;

[0031] Figure 13 is a structural example diagram of a subcarrier management system provided in an embodiment of this application;

[0032] Figure 14 is a structural example diagram of a subcarrier management system provided in an embodiment of this application;

[0033] Figure 15 is a structural example diagram of a subcarrier management system provided in an embodiment of this application;

[0034] Figure 16 is a schematic diagram of a subcarrier management device provided in an embodiment of this application;

[0035] Figure 17 is a schematic diagram of a data transmission device provided in an embodiment of this application;

[0036] Figure 18 is a schematic diagram of a data transmission device provided in an embodiment of this application;

[0037] Figure 19 is a schematic diagram of the structure of a communication node provided in an embodiment of this application. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be arbitrarily combined with each other.

[0039] The steps illustrated in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases the steps shown or described may be performed in a different order than that presented here.

[0040] The subcarrier management method provided in this application can be applied to various bearer networks, such as Optical Transport Network (OTN) and Passive Optical Network (PON). To facilitate understanding of the technical solution, a detailed introduction to optical layer carrier networking and the Optical Orthogonal Frequency Division Multiplexing (O-OFDM) applied within it is provided first. The concept of frequency division multiplexing is to divide a high-bit-rate data stream into several low-bit-rate streams by generating several subcarriers and modulating each low-bit-rate stream onto a subcarrier. When the interval between adjacent subcarriers is greater than or equal to the subcarrier baud rate, O-OFDM is usually referred to as Sub-carrier Multiplexing (SCM). Typically, when the number of subcarriers is small, an effective method for generating OFDM signals is through analog radio frequency (RF) electronics; when the number of subcarriers is large, using digital signal processing (DSP) to generate OFDM signals is an effective method.

[0041] Figure 1 is an example architecture diagram of an optical layer carrier network provided in an embodiment of this application. As shown in Figure 1, in the P2MP direction, the digital customer service on the left is adapted into Media Layer Adapted Information (M-AI) and input to the transmitter. The transmitter is based on one or more M-AIs. i The information from the source is used to modulate each subcarrier, resulting in an optical tributary signal(s) (OTSi) at the Ss reference point. The OTSi is input to an optical splitter, which distributes the OTSi to each receiver. At each Rs reference point, the OTSi is input to the receiver to recover the M-AI from the subcarrier. In the multipoint-to-point (MP2P) direction, the OTSi from each Ss converges in an optical coupler, and the receiver processes one OTSi containing multiple optical tributary subcarrier signals (OTScSi).

[0042] For Client Z, its M-AI nA dedicated subcarrier is used to support this service, and this subcarrier is not used by other customer services. A customer service can use multiple subcarriers, such as M-AI2 and M-AI3, to support customer service B.

[0043] In a scenario where multiple customer services share a subcarrier, during the transmitter's media adaptation process, information from customer services A and C is multiplexed into M-AI1, which is then modulated onto a subcarrier. The optical splitter distributes the signal to the (independent) receivers for customer services A and C, each tuned to the same subcarrier modulated by the transmitter on M-AI1. The media adaptation function on the right only demultiplexes the required customer service information (A or C) from M-AI1. In the MP2P direction, for the case where customer services A and C share the same subcarrier, a subcarrier-sharing mechanism is needed to prevent information loss during signal merging in the coupler from customer services A and C.

[0044] The OAM mechanism for the optical layer, implemented at the physical layer, primarily relies on modulation techniques. Specifically, this involves superimposing additional low-frequency information onto the wavelength using intensity modulation. This low-frequency information includes optical layer OAM channel identification information and other optical layer OAM information, which can be extracted directly at any detection point on the optical path at low cost. Using frequency division multiplexing (FDM) technology, different modulation low frequencies are loaded onto different wavelengths, enabling monitoring of multiple channels. However, in the aforementioned optical layer carrier networking process, primarily carrier-level processing is performed in the optical path. The optical layer OAM mechanism is only suitable for sensing and monitoring carrier information in optical system carrier scenarios and cannot sense and monitor individual OTScSis within the OTSi at the subcarrier level.

[0045] Based on the above description of the implementation environment of optical layer networking, the execution subject of the subcarrier management method in this application embodiment is generally an electronic device with certain computing capabilities. In some possible implementations, the subcarrier management method can be implemented by the processor calling computer-readable instructions stored in the memory.

[0046] In one exemplary embodiment, Figure 2 is a flowchart illustrating a subcarrier management method provided in this application. This method is applicable to situations involving subcarrier-level information perception and maintenance management of optical layer subcarrier networks. The method can be executed by a subcarrier management device, which can be implemented by software and / or hardware and integrated on a communication node. This method can be applied to a management-end communication node, which should be an independent communication node different from the communication nodes present in the optical layer subcarrier network architecture shown in Figure 1. This management-end communication node can be a node in various types of bearer networks; this application embodiment does not impose any limitations on this.

[0047] As shown in Figure 2, the subcarrier management method provided in this embodiment of the application specifically includes the following steps:

[0048] S101. Maintain and manage subcarriers using subcarrier tag information.

[0049] In this embodiment, subcarrier tag information can be specifically understood as optical tag information that is tuned to one or more subcarriers in an optical communication system to indicate specific information such as the subcarrier's identity and working status.

[0050] Specifically, with the maturity of optical subcarrier technology, the application of optical subcarrier networking has gradually emerged in optical communication systems. In optical subcarrier networking, customer services can be modulated onto subcarriers at the transmitting end and transmitted to the corresponding receiving end via these subcarriers. In this embodiment, specific subcarrier tag information is modulated or demodulated on each subcarrier in the optical subcarrier network. That is, the subcarrier tag information is regenerated at the transmitting end and terminated at the receiving end. As subcarriers are transmitted from the transmitting end to the receiving end in the optical subcarrier network, multiple nodes in the management communication node acquire the subcarrier tag information corresponding to each subcarrier during the transmission process. Based on the acquired subcarrier tag information, the management node can perceive the transmission and operating status of the subcarriers in the optical subcarrier network, and then perform status management and maintenance on each subcarrier, such as fault determination, reconfiguration, and anomaly control adjustments, according to the perceived situation.

[0051] The subcarrier management method provided in this application maintains and manages subcarriers through subcarrier tag information. In optical layer networking, in the application process of directly modulating customer service signals onto subcarriers to simplify the network layer, subcarrier tag information is added to each modulated subcarrier. This allows for the perception and maintenance intervention of the service signal transmission process at the subcarrier level through the subcarrier tag information carried by the subcarrier. This solves the problem of lacking information perception and management at the subcarrier level in optical subcarrier applications and improves the application effect of optical layer subcarrier networking architecture.

[0052] In one embodiment, the subcarrier tag information includes: subcarrier identification information.

[0053] In this embodiment, the subcarrier identification information can be specifically understood as identification information used to indicate the identity of the subcarrier throughout the network.

[0054] In one embodiment, the subcarrier identification information includes at least one of the following:

[0055] The network element number where the subcarrier is located;

[0056] The rack number where the subcarrier is located;

[0057] The subframe number where the subcarrier is located;

[0058] The slot number where the subcarrier is located;

[0059] The port number where the subcarrier is located;

[0060] Subcarrier center frequency or wavelength;

[0061] Subcarrier spectral width.

[0062] In one embodiment, the subcarrier tag information further includes at least one of the following:

[0063] Subcarrier service mapping information;

[0064] Local fault indication information;

[0065] Remote control instruction information.

[0066] In this embodiment, the subcarrier service mapping information can be specifically understood as the information required for each subcarrier to realize on-the-path service activation in the optical layer subcarrier network, that is, the information required for complete modulation and demodulation processing from customer signal to optical signal.

[0067] In this embodiment, the local fault indication information can be specifically understood as information generated when each communication node in the optical subcarrier network detects the existence of a fault, used to indicate the fault type and report it to the remote communication node and the management communication node in the optical subcarrier network.

[0068] In this embodiment, the remote control indication information can be specifically understood as information used to instruct communication nodes in the optical subcarrier network to handle abnormal situations when an anomaly occurs in the optical subcarrier network.

[0069] In one embodiment, the subcarrier service mapping information includes at least one of the following:

[0070] Subcarrier modulation method;

[0071] Customer business mapping information;

[0072] Forward Error Correction (FEC) type;

[0073] Digital Signal Processing (DSP) algorithms.

[0074] In one embodiment, the local fault indication information includes at least one of the following:

[0075] No customer signal input indication information;

[0076] Optical path connection interruption indication information;

[0077] Monitoring interruption indication information.

[0078] In this embodiment, the no-customer signal input indication information can be specifically understood as information indicating that there is no customer signal input at this end; the optical path connection interruption indication information can be specifically understood as information indicating that the optical path connection detected by this end is interrupted, indicating that the remote signal is faulty and needs to be investigated step by step; the monitoring interruption indication information can be specifically understood as information indicating that the communication between this end and the management end communication node is interrupted.

[0079] In one embodiment, the remote control instruction information includes at least one of the following:

[0080] Remote information query instructions;

[0081] Remote fault maintenance instruction information.

[0082] In this embodiment, the remote information query indication information can be specifically understood as information used to instruct communication nodes in an optical layer subcarrier network to obtain specified remote information. In one example, the remote information query indication information can be used to instruct the query of remote subcarrier identification information, subcarrier service mapping information, and local fault indication information, etc., and this application embodiment does not limit this.

[0083] In this embodiment, the remote fault maintenance indication information can be specifically understood as control information used to instruct communication nodes in the optical subcarrier network to perform fault maintenance and repair on the remote end. In one example, the remote fault maintenance indication information can be used to instruct the remote end to perform processes such as loopback, restart, power failure, and factory reset, or it can be used to determine the fault status of the remote end, such as whether the remote end has recovered.

[0084] In one embodiment, maintaining and managing subcarriers using subcarrier tag information includes at least one of the following:

[0085] The optical layer subcarrier network structure is maintained and managed using subcarrier identification information;

[0086] Management of in-line service activation for optical layer subcarrier networking is carried out through subcarrier service mapping information;

[0087] Fault management of optical subcarrier networking is achieved through local fault indication information and remote control indication information.

[0088] In this embodiment, the optical layer subcarrier network structure is maintained and managed using subcarrier identification information, including at least one of the following:

[0089] Wavelength allocation is performed on each subcarrier in the optical layer subcarrier network using subcarrier identification information;

[0090] Topology discovery of optical layer subcarrier networks is performed using subcarrier identification information and reference point identification information corresponding to the subcarrier identification information.

[0091] Subcarrier path tracing is performed using subcarrier identification information and reference point identification information corresponding to the subcarrier identification information.

[0092] By using subcarrier identification information and pre-configured reference point expected identification information corresponding to the subcarrier identification information, optical fiber misconnection identification is performed on optical layer subcarrier networking.

[0093] In this embodiment, a reference point can be specifically understood as a node in an optical subcarrier network that can interact with the management communication node, enabling the management communication node to configure or obtain subcarrier identification information. Reference point identification information can be specifically understood as identification information used to indicate the identity of a reference point throughout the network. Expected reference point identification information can be specifically understood as subcarrier identification information pre-set according to actual conditions, which is the subcarrier identification information that is expected to be detected at the reference point; that is, information pre-set according to actual conditions to indicate that a subcarrier should pass through the reference point.

[0094] In one embodiment, the reference point identification information includes at least one of the following:

[0095] The reference point's network element number;

[0096] The subframe number where the reference point is located;

[0097] The slot number where the reference point is located;

[0098] The port number where the reference point is located.

[0099] Specifically, after obtaining the subcarrier tag information containing subcarrier identification information, the management communication node can allocate wavelengths across the entire network for optical layer subcarrier networking based on the wavelength information contained in the subcarrier identification information, so as to avoid wavelength conflicts during optical path aggregation.

[0100] Specifically, after obtaining the subcarrier tag information containing subcarrier identification information, the management communication node can determine the nodes that the subcarrier corresponding to the subcarrier identification information passes through in the optical layer subcarrier network based on the information used to identify the subcarrier's identity contained in the subcarrier identification information and the reference point identification information corresponding to the reference point in the optical layer subcarrier network where the subcarrier identification information can be collected. For nodes that have not yet been recorded by the management communication node, topology discovery of the optical layer subcarrier network can be achieved. If all the nodes passed through have been recorded by the management communication node, the transmission path of the subcarrier in the optical layer subcarrier network can be determined based on all the nodes passed through, thus achieving path tracing of the subcarrier.

[0101] Specifically, the management communication node can be pre-configured with the expected reference point identifiers for each reference point in the optical layer subcarrier network that can pass through subcarriers. The management communication node can also pre-configure corresponding expected reference point identifiers for different reference points in the optical layer subcarrier network. If the management communication node itself has expected reference point identifiers, it can match the acquired subcarrier identifiers with the expected identifiers of each reference point. If a match fails, it can be considered that there is a fiber misconnection in the optical layer subcarrier network. If different reference points in the optical layer subcarrier network are configured with their own expected reference point identifiers, each reference point can compare its own expected reference point identifier with the subcarrier identifiers of the subcarriers it passes through. If a mismatch occurs, the mismatch result is generated and fed back to the management communication node. Both methods can be used to identify fiber misconnections in the optical layer subcarrier network.

[0102] In one example, Figure 3 is a structural example diagram of a subcarrier management system provided in an embodiment of this application. As shown in Figure 3, MCS (Management and Control System) represents the management end communication node. Each Transmitter / Receiver represents a communication node in the optical layer subcarrier network. When acting as a Transmitter, it is a transmitting end communication node; when acting as a Receiver, it is a receiving end communication node. Splitter / Coupler represents the optical splitter or optical coupler in the optical layer subcarrier network. In the P2MP transmission scenario, it is an optical splitter; in the MP2P transmission scenario, it is an optical coupler. MAP represents the mapping and demapping between the client signal and the subcarrier. O / E represents the completion of the optical / electrical signal conversion, i.e., the modulation and demodulation of optical and electrical signals. The semicircle and the number within it represent the corresponding numbered subcarrier. The "~" on the semicircle indicates that subcarrier tag information has been added. A, B, C, and D represent the four reference points in the optical layer subcarrier network, respectively. Where A and B are the input or output ports of the Transmitter / Receiver; C and D are the input or output ports of the Splitter / Coupler.

[0103] In one example, based on the subcarrier management system structure shown in Figure 3, the following processing method can be adopted in the process of maintaining and managing the optical layer subcarrier network structure through subcarrier identification information:

[0104] 1) In the A->B direction, the Transmitter corresponding to reference point A loads subcarrier identification information on each subcarrier 1, 2 & 3, and 4. This information may include: the network element ID, subrack number, slot number, port number, center frequency, and spectral width of subcarrier 1 for Network Element (NE) 1; and the network element ID, subrack number, slot number, port number, center frequency, and spectral width of subcarriers 2 & 3 for NE1. Reference points C, D, and B (Receivers) can detect and report the subcarrier identification information for each subcarrier 1, 2 & 3, and 4, and carry their own reference point identification information, such as the network element ID, subrack number, slot number, and port number for NE2 / NE3 / NE4 / NE5. Based on this, the MCS can complete path tracing and topology generation in the A->B direction according to the reported subcarrier identification information and the reference point identification information corresponding to each reference point. Specifically, reference point B can detect and report only the subcarrier identification information of the corresponding service, such as: the network element ID, subrack number, slot number, port number of NE1, center frequency and spectral width of subcarrier 1.

[0105] 2) In the B->A direction, the transmitter corresponding to reference point B loads subcarrier identification information on each subcarrier 1, 2 & 3, and 4. This information may include: the network element ID of NE2, subrack number, slot number, port number, and the center frequency and spectral width of subcarrier 1. Reference points C, D, and A (Receivers) detect and report the subcarrier identification information for each subcarrier 1, 2 & 3, and 4, and carry their own reference point identification information, such as: the network element ID of NE1 / NE5, subrack number, slot number, and port number. In this way, the MCS can complete path tracing and topology generation in the B->A direction based on the reported subcarrier identification information and the reference point identification information corresponding to each reference point.

[0106] 3) MCS can configure reference point expected identification information containing the expected received subcarrier identifier at reference points A, C, D and B, or configure reference point expected identification information at reference points A, C, D and B respectively, so as to verify whether the optical fiber is misconnected when the subcarrier passes through each reference point, and to detect the root and leaf mismatch.

[0107] In one example, Figure 4 is a timing example diagram of maintaining and managing the structure of an optical layer subcarrier network using subcarrier identification information, provided by an embodiment of this application. The timing example diagram shown in Figure 4 is based on the structure of the subcarrier management system shown in Figure 3, and specifically includes the following steps:

[0108] 1) The MCS allocates subcarriers to each transceiver from NE1 to NE4 and enables each subcarrier to load subcarrier identification information.

[0109] 2) When going from A to B, transmitter 1 of NE1 loads the corresponding subcarrier identification information on subcarriers 1, 2 & 3, and 4;

[0110] During the B->A transition, the transmitters of NE2-NE4 load their respective subcarrier identification information on subcarriers 1, 2 & 3, and 4.

[0111] 3) When going from A to B, NE5 detects and reports the subcarrier identification information of subcarriers 1, 2 & 3, 4 in the root-to-leaf direction at C and D, and carries the reference point identification information of this reference point.

[0112] When going from B to A, NE5 detects and reports the subcarrier identification information of subcarriers 1, 2 & 3, 4 in the leaf-to-root direction at points C and D, and carries the reference point identification information of this reference point.

[0113] 4) When going from A to B, the receivers at NE2-NE4 detect and report the subcarrier identification information of subcarriers 1, 2 & 3, and 4, and carry the reference point identification information of this reference point;

[0114] When going from B to A, the receiver at NE1 detects and reports the subcarrier identification information of subcarriers 1, 2 & 3, and 4, and carries the reference point identification information of this reference point.

[0115] 5) When going from A to B, the MCS draws the topology of A to C and D to B based on the reported subcarrier identification information and reference point identification information;

[0116] During the B->A transition, the MCS draws the topologies for C->A and B->D based on the reported subcarrier identification information and reference point identification information.

[0117] 6) The MCS configures the expected subcarrier identification information of the expected subcarrier identification information on itself or at each reference point from NE1 to NE5, and compares it with the reported subcarrier identification information to determine whether the optical fiber is misconnected.

[0118] In one embodiment, the management of in-line service activation for optical layer subcarrier networking is performed through subcarrier service mapping information, including:

[0119] Obtain the service mapping capability information set of each reference point in the optical layer subcarrier network;

[0120] Based on the intersection of the information sets of each service mapping capability, subcarrier service mapping information is configured for each subcarrier of the transmitting communication node in the optical layer subcarrier network.

[0121] In this embodiment, the service mapping capability information set can be specifically understood as a collection of service mapping capability information that the reference point can support, as well as the network element number, subrack number, slot number, and port number that can be supported. This application embodiment does not impose any limitations on this. For example, the service mapping capability information may be a subcarrier modulation method; customer service mapping information; forward error correction type; digital signal processing algorithm, etc. This application embodiment does not impose any limitations on this.

[0122] Specifically, during the construction of the optical subcarrier network, the management communication node can first obtain the service mapping capability information set of each reference point in the optical subcarrier network that supports service mapping capabilities. Then, the management communication node performs pairwise matching of different reference points' service mapping capability information sets. When there is an intersection between the two sets, it can be considered that service activation can be achieved between the two reference points. After all intersections of service mapping capability information sets have been matched, the services that can be activated on each subcarrier of the transmitting communication node in the optical subcarrier network can be determined. Based on the occupancy of different subcarrier services, corresponding subcarrier service mapping information can be configured for each subcarrier to ensure successful service activation based on the subcarrier service mapping information, thus achieving simplified service activation process with in-line service activation.

[0123] In one example, based on the subcarrier management system structure shown in Figure 3, the following approach can be used to manage the on-path service activation of optical layer subcarrier networks through subcarrier service mapping information:

[0124] First, the MCS system collects service mapping capability information for reference points A and B, such as the network element IDs, subrack numbers, slot numbers, port numbers, and supported service mapping capability information sets for NE1 and NE4. The MCS determines whether the supported service mapping capability information sets of reference points A and B have overlap. If not, it issues an alarm indicating a mismatch in the service mapping capabilities of the network element IDs, subrack numbers, slot numbers, and port numbers for NE1 and NE4. If there is overlap, when the MCS needs to initiate on-the-fly service activation for reference point A or B, it needs to load subcarrier service mapping information for reference point A or B according to the overlap to complete the on-the-fly service activation. In the case of reference point B, the leaf node follows the root node; when leaf nodes are deployed at ordinary users, user-side configuration can be reduced. In the case of reference point A, the root node follows the leaf node; when leaf nodes (user-side) have configuration requirements, such as strong configuration requirements during planning or maintenance, the root node can automatically adapt to the leaf node at the subcarrier level.

[0125] Furthermore, from B to A, each transmitter at reference point B loads subcarrier service mapping information on subcarriers 1, 2 & 3, and 4. This information includes the NE2 network element ID, subrack number, slot number, port number, and relevant service mapping information for subcarrier 1. The receiver at reference point A detects the subcarrier service mapping information for subcarriers 1, 2 & 3, and 4, and configures the receiver accordingly to correctly decode the client signal. The process from A to B is the same, completing subcarrier service following.

[0126] In one example, Figure 5 is a timing example diagram of an embodiment of this application for managing the in-line service activation of optical layer subcarrier networking through subcarrier service mapping information. The timing example diagram shown in Figure 5 is based on the structure of the subcarrier management system shown in Figure 3. Taking the need for in-line service activation between the transceivers corresponding to NE1 and NE4 as an example, the specific steps include the following:

[0127] 1) MCS collects the service mapping capability information set of transceiver 1 of NE1 and NE4, and determines whether they have an intersection. If not, it will issue an alarm indicating that the corresponding transceiver service mapping capability does not match; if they do, it will execute the subsequent steps.

[0128] 2) When going from A to B, the MCS enables service following on subcarrier 4 of transceiver 1 of NE1;

[0129] When B->A, the MCS specifies that service follow is enabled on subcarrier 4 of transceiver 1 of NE4.

[0130] 3) When going from A to B, transmitter 1 of NE1 loads subcarrier service mapping information on subcarrier 4;

[0131] During the B->A transition, transmitter 1 of NE4 loads subcarrier service mapping information on subcarrier 4.

[0132] 4) When going from A to B, receiver 1 of NE4 parses the subcarrier service mapping information on subcarrier 4 and completes the service mapping configuration of subcarrier 4 accordingly.

[0133] During the B->A transition, receiver 1 of NE1 parses the subcarrier service mapping information on subcarrier 4 and configures the service mapping of subcarrier 4 accordingly.

[0134] In one embodiment, fault management of optical layer subcarrier networking is performed using local fault indication information and remote control indication information, including:

[0135] Upon receiving a local fault indication, remote control indication information is generated based on the local fault indication information.

[0136] Configure the remote control indication information to the reference point corresponding to the local fault indication information;

[0137] The system receives feedback from the reference point corresponding to the local fault indication information in response to the remote control indication information, and performs fault management on the optical layer subcarrier network based on the feedback.

[0138] Specifically, upon receiving a local fault indication, the control communication node can identify the fault type and the location of the faulty reference point in the optical subcarrier network. To resolve the fault, it can generate remote control indication information based on the received local fault indication. Since the faulty reference point itself does not report its own fault indication, but rather reports it through the corresponding remote reference point, the control communication node can consider the reference point reporting its fault indication as normal and directly use it for adjusting and controlling the optical subcarrier network. Therefore, after the remote control indication information is generated, the control end communication node will configure the remote control indication information to the reference point corresponding to the local fault indication information. The reference point will then remotely control other reference points in the optical subcarrier network based on the remote control indication information. The reference point can also obtain feedback from other reference points in the optical subcarrier network regarding the remote control indication information. Furthermore, the reference point can report the received feedback to the control end communication node, enabling the control end communication node to complete fault management of the optical subcarrier network based on the received feedback.

[0139] In one example, based on the structure of the subcarrier management system shown in Figure 3, and taking the local fault indication information as the monitoring interruption indication information indicating the monitoring interruption between NE4 and the management terminal communication node as an example, Figure 6 is a timing example diagram of fault management of optical layer subcarrier networking through local fault indication information and remote control indication information provided by an embodiment of this application. As shown in Figure 6, the specific steps include the following:

[0140] 1) When the MCS receives the local fault indication information reported by NE1, if the received local fault indication information is an indication that the monitoring of NE4 is interrupted, it can generate a remote information query indication information for remote information query as a remote control indication information, and send the remote control indication information to NE1.

[0141] 2) Transmitter 1 of NE1 loads remote control indication information on subcarrier 4 to query NE4. This remote control indication information can be an indication of the status information of the monitoring device.

[0142] 3) The receiver 1 of NE4 parses the remote control indication information on subcarrier 4, and according to the indication of the remote control indication information, the transmitter 1 loads the query result into the subcarrier tag information on subcarrier 4, and feeds back the subcarrier tag information to NE1 through subcarrier 4.

[0143] 4) The receiver 1 of NE1 parses the subcarrier tag information on subcarrier 4 to obtain the query result and reports the query result to MCS.

[0144] 5) Based on the queried monitoring and diagnostic information, the MCS sends remote fault maintenance instruction information to subcarrier 4 of NE1 as remote control instruction information for remote fault maintenance.

[0145] 6) Transmitter 1 of NE1 loads remote control indication information on subcarrier 4 to maintain NE4. This remote control indication information can be an indication for resetting the monitoring device.

[0146] 7) The receiver 1 of NE4 parses the remote control indication information on subcarrier 4, and according to the indication of the remote control indication information, the transmitter 1 loads the operation result into the subcarrier tag information on subcarrier 4, and feeds back the subcarrier tag information to NE1 through subcarrier 4.

[0147] 8) The receiver 1 of NE1 parses the subcarrier tag information on subcarrier 4 to obtain the operation result, and reports the operation result to MCS.

[0148] 9) Based on the operation results, MCS checks whether the monitoring of NE4 has been restored.

[0149] In one embodiment, before maintaining and managing the subcarriers using subcarrier tag information, the method further includes:

[0150] Subcarrier tag information is obtained from the reference point of optical layer subcarrier networking;

[0151] or

[0152] Configure subcarrier tag information at the reference point of the optical layer subcarrier network.

[0153] Specifically, before maintaining and managing subcarriers in an optical layer subcarrier network using subcarrier tag information, each subcarrier in the network must first be configured with subcarrier tag information, and this subcarrier tag information must be obtainable by the control end communication node during signal transmission. Therefore, before maintaining and managing subcarriers using subcarrier tag information, the management end communication node can first obtain the subcarrier tag information of the subcarriers passing through each reference point in the optical layer subcarrier network, or the management end communication node can first configure the subcarrier tag information at the reference points of the optical layer subcarrier network.

[0154] In one embodiment, the optical subcarrier network includes at least one of the following:

[0155] Point-to-multipoint optical subcarrier networking;

[0156] Multi-point-to-point optical subcarrier networking.

[0157] In one example, taking the structure of the subcarrier management system shown in Figure 3 as an example, the direction from A to B, that is, from the root node to multiple leaf nodes, can be understood as a point-to-multipoint optical subcarrier network topology; the direction from B to A, that is, from multiple leaf nodes to the root node, can be understood as a multipoint-to-point optical subcarrier network topology.

[0158] In one embodiment, the reference point for optical subcarrier networking includes at least one of the following:

[0159] The insertion point of the sending communication node;

[0160] Output point of the sending communication node;

[0161] The input point of the receiving communication node;

[0162] Input point of the optical splitter;

[0163] The output point of the optical splitter;

[0164] The input point of the optical coupler;

[0165] The output point of the optocoupler.

[0166] In this embodiment, the insertion point of the transmitting end communication node can be specifically understood as a node in the transmitting end communication node used to receive the subcarrier tag information given by the management end communication node and insert the subcarrier tag information into the corresponding subcarrier.

[0167] In one example, taking the subcarrier management system structure shown in Figure 3 as an example, the output point of the transmitting end communication node is point A in the A->B direction and point B in the B->A direction; the input point of the receiving end communication node is point B in the A->B direction and point A in the B->A direction; the input point of the optical splitter is point C in the A->B direction; the output point of the optical splitter is point D in the A->B direction; the input point of the optical coupler is point D in the B->A direction; and the output point of the optical coupler is point C in the B->A direction.

[0168] In one embodiment, obtaining subcarrier tag information from a reference point in the optical subcarrier networking includes:

[0169] When an optical signal is received at the reference point of the optical subcarrier network, the subcarrier tag information obtained by demodulating the optical signal is acquired by the reference point of the optical subcarrier network.

[0170] Specifically, when a reference point in an optical layer subcarrier network receives an optical signal transmitted in an optical path, the reference point can demodulate the optical signal to obtain the subcarriers contained therein and the subcarrier tag information corresponding to the subcarriers. This allows the management communication node to obtain the subcarrier tag information reported by the reference point.

[0171] In one embodiment, demodulating the optical signal includes:

[0172] The optical signal is converted into an analog electrical signal by photoelectric conversion.

[0173] The analog electrical signal is demultiplexed to determine the analog subcarrier;

[0174] Analog-to-digital conversion is performed on the analog subcarriers to determine the digital subcarriers;

[0175] Demodulate the digital subcarriers to determine the subcarrier tag information.

[0176] In one embodiment, demodulating the optical signal includes:

[0177] The optical signal is converted into an analog electrical signal by photoelectric conversion.

[0178] Perform analog-to-digital conversion on analog electrical signals to determine digital electrical signals;

[0179] Demultiplex the digital electrical signal to determine the digital subcarrier;

[0180] Demodulate the digital subcarriers to determine the subcarrier tag information.

[0181] It is understood that both of the above demodulation methods for optical signals can be used at the reference point. That is, demodulating an optical signal into subcarriers and subcarrier tag information requires photoelectric conversion, demultiplexing, and analog-to-digital conversion to obtain digital subcarrier information. However, the order of demultiplexing and analog-to-digital conversion can be reversed in actual operation. The difference lies only in whether demultiplexing occurs in the digital domain or the analog domain. Both of the above processing methods can be implemented, and the embodiments of this application do not impose any restrictions on this.

[0182] In one exemplary embodiment, Figure 7 is a schematic flowchart of a data transmission method provided by an embodiment of this application. This method is applicable to the transmission of information at the subcarrier layer in an optical subcarrier network and the feedback of transmission status. The method can be executed by a data transmission device, which can be implemented by software and / or hardware and integrated on a communication node. This method can be applied to a transmitting communication node, which can be, but is not limited to, the communication node acting as a transmitter in the subcarrier management system shown in Figure 3. This transmitting communication node can be a node in various types of bearer networks; this embodiment of the application does not impose any limitations on this.

[0183] As shown in Figure 7, the data transmission method provided in this embodiment of the application specifically includes the following steps:

[0184] S201, Modulate the received customer signal onto digital subcarriers of different frequencies.

[0185] Specifically, after receiving the client signal, the transmitting communication node can modulate the client signal onto subcarriers of different frequencies according to a pre-determined mapping relationship to obtain digital subcarriers corresponding to each frequency.

[0186] It is understood that a single customer signal can be modulated onto multiple subcarriers, or multiple customer signals can be modulated onto the same subcarrier; this application does not impose any restrictions on this.

[0187] S202. Perform signal conversion on each digital subcarrier and send the resulting optical signal to the receiving communication node.

[0188] The optical signal includes analog subcarriers corresponding to each digital subcarrier, and subcarrier tag information corresponding to each analog subcarrier.

[0189] In this embodiment, the analog subcarrier can be specifically understood as the subcarrier located in the analog domain obtained by converting the digital subcarrier into an analog one.

[0190] Specifically, each digital subcarrier undergoes signal conversion processing, including at least digital-to-analog conversion, subcarrier tag information addition, and electro-optical conversion. The resulting optical signal, containing the analog subcarriers corresponding to each digital subcarrier and the subcarrier tag information corresponding to each analog subcarrier, is then sent to the receiving communication node corresponding to the transmitting communication node.

[0191] It is understandable that during the process of sending the generated optical signal to the receiving communication node, the optical signal can be demodulated by each reference point located in the optical layer subcarrier network, and the demodulated subcarrier tag information can be reported to the management communication node to realize the subcarrier management in the above embodiment.

[0192] In one embodiment, when the transmitting communication node is located in a point-to-multipoint optical subcarrier network, signal conversion is performed on each digital subcarrier, including:

[0193] Each digital subcarrier is subjected to subcarrier tag information addition, frequency division multiplexing, and digital-to-analog conversion to obtain an analog subcarrier containing subcarrier tag information;

[0194] Electro-optical conversion is performed on each analog subcarrier containing subcarrier tag information to determine the optical signal.

[0195] Specifically, in a point-to-multipoint optical subcarrier network, the transmitting communication node can be considered the root node. This means that each digital subcarrier needs to undergo frequency division multiplexing (FDM) before being combined into a single wave and converted into a corresponding optical signal for transmission in the optical path. Therefore, in a point-to-multipoint optical subcarrier network, the modulated digital subcarriers undergo various processing steps, including adding subcarrier tag information, FDM, and digital-to-analog conversion, to obtain analog subcarriers containing their respective tag information. These analog subcarriers can then be electro-optically converted to obtain an optical signal that can be transmitted in the optical path.

[0196] In this embodiment, there is no restriction on the timing of adding subcarrier tag information, frequency division multiplexing, and digital-to-analog conversion. That is, the addition of subcarrier tag information and frequency division multiplexing can be performed in the digital domain or in the analog domain. This embodiment does not impose any restrictions on this.

[0197] In one embodiment, subcarrier tag information is added, frequency division multiplexing is performed, and digital-to-analog conversion is performed on each digital subcarrier, including at least one of the following:

[0198] Subcarrier tag information is added and frequency division multiplexing is performed on each digital subcarrier, and the processed digital subcarrier containing subcarrier tag information is converted from digital to analog.

[0199] Subcarrier tag information is added to each digital subcarrier, and after digital-to-analog conversion of the digital subcarriers containing subcarrier tag information, frequency division multiplexing is performed on the resulting analog subcarriers containing subcarrier tag information;

[0200] Each digital subcarrier is converted from digital to analog, and the resulting analog subcarriers are then labeled with subcarrier tags and frequency-division multiplexed.

[0201] Specifically, different processing sequences can be used when adding subcarrier tag information, performing frequency division multiplexing, and digital-to-analog conversion on each digital subcarrier. For example, subcarrier tag information can be added and frequency division multiplexing can be performed on each digital subcarrier first in the digital domain, and then digital-to-analog conversion can be performed on the processed digital subcarriers containing subcarrier tag information to obtain analog subcarriers containing subcarrier tag information. Alternatively, subcarrier tag information can be added to each digital subcarrier first in the digital domain, and then digital-to-analog conversion can be performed directly on the digital subcarriers containing subcarrier tag information, finally performing frequency division multiplexing in the analog domain to obtain analog subcarriers containing subcarrier tag information. Another option is to directly perform digital-to-analog conversion on the digital subcarriers, and then complete the subcarrier tag information addition and frequency division multiplexing on the obtained analog subcarriers in the analog domain. It is understandable that in this case, digital-to-analog conversion of the digital subcarrier tag information is required before adding the subcarrier tag information to ensure that the subcarrier tag information can be added correctly.

[0202] In one embodiment, frequency division multiplexing of the obtained analog subcarriers and electro-optical conversion of each analog subcarrier containing subcarrier tag information are performed simultaneously.

[0203] In one embodiment, when the transmitting communication node is located in a multi-point-to-point optical subcarrier network, signal conversion is performed on each digital subcarrier, including:

[0204] Add subcarrier tag information and perform digital-to-analog conversion on each digital subcarrier to obtain an analog subcarrier containing subcarrier information;

[0205] Electro-optical conversion is performed on each analog subcarrier containing subcarrier tag information to determine the optical signal.

[0206] Specifically, when the transmitting communication node is located in a multi-point-to-point optical subcarrier network, the transmitting communication node can be considered a leaf node in the optical subcarrier network. That is, each digital subcarrier can be directly converted into an optical signal and coupled into a single signal via an optical coupler in the optical subcarrier network for transmission, without needing frequency division multiplexing (FDM) processing. Therefore, when the transmitting communication node is located in a multi-point-to-point optical subcarrier network, the modulated digital subcarriers undergo processing including adding subcarrier tag information and digital-to-analog conversion to obtain analog subcarriers containing their respective subcarrier tag information. These analog subcarriers, containing subcarrier tag information, can then be electro-optically converted to obtain an optical signal that can be transmitted in the optical path.

[0207] In this embodiment, there is no restriction on the timing of adding subcarrier tag information and digital-to-analog conversion. That is, the addition of subcarrier tag information can be performed in the digital domain or in the analog domain. This embodiment does not impose any restrictions on this.

[0208] In one embodiment, adding subcarrier tag information and performing digital-to-analog conversion on each digital subcarrier includes at least one of the following:

[0209] Subcarrier tag information is added to each digital subcarrier, and digital subcarriers containing subcarrier tag information are converted from digital to analog.

[0210] Each digital subcarrier is converted from digital to analog, and subcarrier tag information is added to the resulting analog subcarriers.

[0211] In one embodiment, the subcarrier tag information includes:

[0212] Subcarrier identification information.

[0213] In one embodiment, the subcarrier identification information includes at least one of the following:

[0214] The network element number where the subcarrier is located;

[0215] The rack number where the subcarrier is located;

[0216] The subframe number where the subcarrier is located;

[0217] The slot number where the subcarrier is located;

[0218] The port number where the subcarrier is located;

[0219] Subcarrier center frequency or wavelength;

[0220] Subcarrier spectral width.

[0221] In one embodiment, the subcarrier tag information further includes at least one of the following:

[0222] Subcarrier service mapping information;

[0223] Local fault indication information;

[0224] Remote control instruction information.

[0225] In one embodiment, the subcarrier service mapping information includes at least one of the following:

[0226] Subcarrier modulation method;

[0227] Customer business mapping information;

[0228] Forward error correction type;

[0229] Digital signal processing algorithms.

[0230] In one embodiment, the local fault indication information includes at least one of the following:

[0231] No customer signal input indication information;

[0232] Optical path connection interruption indication information;

[0233] Monitoring interruption indication information.

[0234] In one embodiment, the remote control instruction information includes at least one of the following:

[0235] Remote information query instructions;

[0236] Remote fault maintenance instruction information.

[0237] In one embodiment, subcarrier tag information is added to each digital subcarrier, including at least one of the following:

[0238] Receive the subcarrier identification information configured for each subcarrier by the management communication node, and add the subcarrier identification information to the corresponding subcarrier;

[0239] Based on the characteristics of each digital subcarrier, the corresponding subcarrier identification information is determined, and each subcarrier identification information is added to the corresponding subcarrier.

[0240] Receive the subcarrier service mapping information configured for each subcarrier by the management communication node, and add the subcarrier service mapping information to the corresponding subcarrier;

[0241] When no customer signal input is detected, a corresponding local fault indication message is generated and added to the corresponding subcarrier.

[0242] If an optical path connection interruption is detected, a corresponding local fault indication message is generated and added to the corresponding subcarrier.

[0243] If a monitoring interruption is detected at the management end, a corresponding local fault indication information is generated and added to the corresponding subcarrier.

[0244] Receive remote control indication information configured by the management communication node and add the remote control indication information to the corresponding subcarrier;

[0245] Upon receiving remote control indication information from a remote communication node, a remote control indication result information corresponding to the remote control indication information is generated and added to the corresponding subcarrier.

[0246] Specifically, when the transmitting communication node receives the subcarrier identification information configured for each subcarrier by the management communication node, it can add the subcarrier identification information as subcarrier tag information to the corresponding subcarrier at any of the aforementioned times when subcarrier tag information is added.

[0247] Specifically, the transmitting communication node can determine the subcarrier identification information corresponding to each digital subcarrier based on the characteristics of each digital subcarrier it contains. Then, at any of the above-mentioned times when adding subcarrier tag information, the subcarrier identification information can be added as subcarrier tag information to the corresponding subcarrier.

[0248] Specifically, when the transmitting communication node receives the subcarrier service mapping information configured for each subcarrier by the management communication node, it can add the subcarrier service mapping information as subcarrier tag information to the corresponding subcarrier at any of the aforementioned times when subcarrier tag information is added.

[0249] Specifically, when the transmitting communication node detects that there is no customer signal input, it will generate local fault indication information containing no customer signal input information. Then, at any of the above-mentioned times when subcarrier tag information is added, the local fault indication information can be added as subcarrier tag information to the corresponding subcarrier.

[0250] In one example, Figure 8 is a timing example diagram of managing an optical layer subcarrier network when there is no customer signal input, according to an embodiment of this application. The timing example diagram shown in Figure 8 is based on the structure of the subcarrier management system shown in Figure 3, and specifically includes the following steps:

[0251] 1) No signal input to Client Z of NE1.

[0252] 2) Transmitter 1 of NE1 loads local fault indication information containing no customer signal input indication information on subcarrier 4.

[0253] 3) NE5 detects and reports no customer signal input indication information for subcarrier 4 in the root-to-leaf direction at points C and D.

[0254] 4) The receiver 1 of NE4 can detect and report the no customer signal input indication information of subcarrier 4, and replace it with a specific maintenance code stream.

[0255] Specifically, when the transmitting communication node detects an optical path connection interruption on any of the subcarriers, it will generate local fault indication information containing optical path connection interruption indication information. Then, at any of the aforementioned times when subcarrier tag information is added, the local fault indication information can be added as subcarrier tag information to the corresponding subcarrier.

[0256] In one example, Figure 9 is a timing example diagram of managing optical layer subcarrier networking when the optical path connection is interrupted, according to an embodiment of this application. The timing example diagram shown in Figure 9 is based on the structure of the subcarrier management system shown in Figure 3, and specifically includes the following steps:

[0257] 1) The optical path connection between the receiver / transmitter of NE5 and NE3 is interrupted.

[0258] 2) Receiver 1 of NE1 can detect and report optical path connection interruption indication information for subcarriers 2 and 3;

[0259] The receiver 1 of NE3 can detect and report optical path connection interruption indication information for subcarriers 2 and 3;

[0260] At points C and D, NE5 can detect and report optical path connection interruption indication information for subcarriers 2 and 3 in the leaf-to-root direction.

[0261] Specifically, when the transmitting communication node detects a monitoring interruption between itself and the management communication node, it will generate local fault indication information containing monitoring interruption indication information. Then, at any of the above-mentioned times when subcarrier tag information is added, the local fault indication information can be added as subcarrier tag information to the corresponding subcarrier.

[0262] In one example, Figure 10 is a timing example diagram of managing the optical layer subcarrier network when the management terminal monitoring is interrupted, according to an embodiment of this application. The timing example diagram shown in Figure 10 is based on the structure of the subcarrier management system shown in Figure 3, and specifically includes the following steps:

[0263] 1) NE4 detects a communication interruption with MCS and loads a local fault indication message containing monitoring interruption indication information onto subcarrier 4 of transmitter 1.

[0264] 2) NE5 can detect and report monitoring interruption indication information from NE4 at points C and D.

[0265] 3) The receiver 1 of NE1 can detect the monitoring interruption indication information reported in NE4.

[0266] Specifically, after the transmitting communication node reports its own fault indication information to the management communication node, it can receive remote control indication information configured by the management communication node. Then, at any of the above-mentioned times when subcarrier tag information is added, the remote control indication information can be added as subcarrier tag information to the corresponding subcarrier.

[0267] Specifically, after the transmitting communication node sends remote control indication information to the corresponding receiving communication node, the receiving communication node that receives the remote control indication information will generate remote control indication result information in response to the remote control indication information, and needs to feed back the remote control indication result information to the corresponding remote communication node. In order to realize the feedback operation, the receiving communication node will turn into a transmitting communication node, and can add the remote control indication result information as subcarrier tag information to the corresponding subcarrier at any of the aforementioned times when subcarrier tag information is added.

[0268] In one embodiment, transmitting the obtained optical signal to the receiving communication node includes:

[0269] When the transmitting communication node is located in a point-to-multipoint optical subcarrier network, the obtained optical signal is sent to the receiving communication node through an optical distributor;

[0270] When the transmitting communication node is located in a multi-point-to-point optical subcarrier network, the obtained optical signal is sent to the receiving communication node through an optical coupler.

[0271] In one exemplary embodiment, Figure 11 is a schematic flowchart of a data transmission method provided by an embodiment of this application. This method is applicable to the transmission of information at the subcarrier layer in an optical subcarrier network and the feedback of transmission status. The method can be executed by a data transmission device, which can be implemented by software and / or hardware and integrated on a communication node. This method can be applied to a receiving communication node, which can be, but is not limited to, the communication node acting as a receiver in the subcarrier management system shown in Figure 3. This receiving communication node can be any type of bearer network, and this embodiment of the application does not impose any limitations on this.

[0272] As shown in Figure 11, the data transmission method provided in this embodiment of the application specifically includes the following steps:

[0273] S301. The received optical signal is converted to obtain multiple digital subcarriers and subcarrier tag information corresponding to each digital subcarrier.

[0274] The optical signal includes analog subcarriers corresponding to each digital subcarrier, as well as subcarrier tag information corresponding to each analog subcarrier.

[0275] Specifically, since the optical signal received by the receiving communication node simultaneously contains multiple subcarriers and their corresponding information, frequency domain demultiplexing is required when performing signal conversion to ultimately obtain the required digital subcarriers and subcarrier tag information. Therefore, when the receiving communication node receives the optical signal, it will perform multiple processes on the optical signal, including photoelectric conversion, analog-to-digital conversion, and frequency domain demultiplexing, ultimately obtaining multiple digital subcarriers and the subcarrier tag information corresponding to each digital subcarrier.

[0276] S302, Demap each digital subcarrier into a customer signal.

[0277] In one embodiment, the received optical signal is converted to obtain multiple digital subcarriers and tag information corresponding to each digital subcarrier, including at least one of the following:

[0278] The received optical signal is converted into photoelectric signal and then demultiplexed in the frequency domain. The resulting analog subcarrier is converted into digital signal to obtain multiple digital subcarriers. Each digital subcarrier is demodulated to obtain the corresponding subcarrier tag information.

[0279] The received optical signal is sequentially converted from photoelectric to digital and then from analog to digital. The resulting digital signal is then demultiplexed in the frequency domain to obtain multiple digital subcarriers. Each digital subcarrier is then demodulated to obtain the corresponding subcarrier tag information.

[0280] In one embodiment, the subcarrier tag information includes:

[0281] Subcarrier identification information.

[0282] In one embodiment, the subcarrier identification information includes at least one of the following:

[0283] The network element number where the subcarrier is located;

[0284] The rack number where the subcarrier is located;

[0285] The subframe number where the subcarrier is located;

[0286] The slot number where the subcarrier is located;

[0287] The port number where the subcarrier is located;

[0288] Subcarrier center frequency or wavelength;

[0289] Subcarrier spectral width.

[0290] In one embodiment, the subcarrier tag information further includes at least one of the following:

[0291] Subcarrier service mapping information;

[0292] Local fault indication information;

[0293] Remote control instruction information.

[0294] In one embodiment, the subcarrier service mapping information includes at least one of the following:

[0295] Subcarrier modulation method;

[0296] Customer business mapping information;

[0297] Forward error correction type;

[0298] Digital signal processing algorithms.

[0299] In one embodiment, the local fault indication information includes at least one of the following:

[0300] No customer signal input indication information;

[0301] Optical path connection interruption indication information;

[0302] Monitoring interruption indication information.

[0303] In one embodiment, the remote control instruction information includes at least one of the following:

[0304] Remote information query instructions;

[0305] Remote fault maintenance instruction information.

[0306] The data transmission method of this application is illustrated below through some exemplary schemes.

[0307] Option 1: Taking point-to-multipoint optical subcarrier networking as an example, Figure 12 is a structural example diagram of a subcarrier management system provided in an embodiment of this application.

[0308] As shown in Figure 12, the root node in the optical subcarrier network is the transmitting communication node. In this network, the client signal is mapped to symbols via a MAP (Mapping Map), where each symbol represents a digital subcarrier modulated to a different frequency. During modulation, corresponding subcarrier tag information (OAM) is added to each digital subcarrier. Multiple digital subcarriers undergo digital multiplexing to achieve frequency division multiplexing in the digital domain. Digital multiplexing can use the IFFT (Inverse Fast Fourier Transform) method. The digital signal is converted to a digital-to-analog signal via a digital-to-analog converter (DAC), and then an optical signal is generated by an optical modulator. The transmitted optical signal is sent to each receiving communication node via an optical splitter.

[0309] As shown in Figure 12, the leaf nodes in the optical subcarrier network are the receiving communication nodes. In these nodes, the optical signal is converted into a digital-to-analog signal by an optical demodulator, then converted into a digital signal by an analog-to-digital converter (ADC). Frequency domain demultiplexing is then performed to obtain multiple digital subcarriers, which are then demapped back to the client signal using a MAP (Modular Mapping) method. Digital demultiplexing can be achieved using the FFT (Fast Fourier Transform) method.

[0310] In this system, node A can be understood as the insertion point of the transmitting communication node; node C can be understood as the input point of the optical splitter; node D can be understood as the output point of the optical splitter; and nodes E and F can be jointly understood as the input points of the receiving communication node. In actual operation, either E or F can be chosen as a reference point, and either C or D can be chosen as a reference point or both can be used as needed.

[0311] Option 2: Taking multi-point-to-point optical subcarrier networking as an example, Figure 13 is a structural example diagram of a subcarrier management system provided in an embodiment of this application.

[0312] As shown in Figure 13, the leaf nodes in the optical subcarrier network are the transmitting communication nodes. In these nodes, client signals are mapped to symbols via a MAP (Mapping Map), where the symbols represent the client signals modulated onto digital subcarriers of different frequencies. The digital signals are converted to analog-to-digital signals by a DAC (Digital Converter), and then used to generate optical signals via an optical modulator. The various optical signals carrying the subcarriers are converged by an optical coupler and sent to the receiving communication node.

[0313] As shown in Figure 13, the root node in the optical subcarrier network is the receiving communication node. In this network, the optical signal is converted into a digital-to-analog signal by an optical demodulator, then converted into a digital signal by an ADC, and finally demultiplexed in the frequency domain using digital demultiplexing to obtain multiple digital subcarriers. These are then demapped back to the client signal using a MAP (Modular Mapping) method. Digital demultiplexing can be performed using the FFT (Fast Fourier Transform) method.

[0314] In this system, node A can be understood as the insertion point of the transmitting communication node; node C can be understood as the input point of the optical coupler; node D can be understood as the output point of the optical coupler; and nodes E and F can be jointly understood as the input points of the receiving communication node. In actual operation, either E or F can be chosen as a reference point, and either C or D can be chosen as a reference point or both can be used as needed.

[0315] For the two schemes mentioned above, reference point A in the figure is used for subcarrier tag information modulation in the digital domain, reference point F is used for subcarrier tag information demodulation in the digital domain, and reference points C / D / E are used for subcarrier tag information demodulation in the analog domain. Reference points A / C / D / E / F can all interact with the management terminal communication node to exchange tag information.

[0316] Scheme 3: Taking point-to-multipoint optical subcarrier networking as an example, Figure 14 is a structural example diagram of a subcarrier management system provided in an embodiment of this application.

[0317] As shown in Figure 14, the root node in the optical subcarrier network is the transmitting communication node. In this network, the client signal is mapped to symbols via a MAP (Mapping Map), where each symbol represents a digital subcarrier modulated to a different frequency. Multiple digital subcarriers are converted into digital-to-analog signals via a DAC (Digital-to-Analog Converter). Simultaneously, analog domain frequency division multiplexing is performed, and an optical signal is generated by an optical modulator. Analog multiplexing can be performed in either the electrical analog domain or the optical analog domain. The transmitted optical signal is then sent to each receiving communication node via an optical splitter.

[0318] As shown in Figure 14, the leaf nodes in the optical subcarrier network are the receiving communication nodes. In these nodes, the optical signal is simultaneously generated into a digital-analog signal by an optical demodulator, then frequency domain demultiplexed by Analog demultiplexing, and finally converted into a digital signal by an ADC, resulting in multiple digital subcarriers. This is then demapped into the client signal by a MAP. Analog demultiplexing can be performed in either the electrical analog domain or the optical analog domain.

[0319] In this system, nodes A and B can be understood as the insertion points of the transmitting communication nodes; node C can be understood as the input point of the optical splitter; node D can be understood as the output point of the optical splitter; and nodes E and F can be jointly understood as the input points of the receiving communication nodes. In actual operation, either A or B can be chosen as a reference point, either E or F can be chosen as a reference point, and either C or D can be chosen as a reference point or both can be chosen as needed.

[0320] Option 4: Taking multi-point-to-point optical subcarrier networking as an example, Figure 15 is a structural example diagram of a subcarrier management system provided in an embodiment of this application.

[0321] As shown in Figure 15, the leaf nodes in the optical subcarrier network are the transmitting communication nodes. In these nodes, client signals are mapped to symbols via a MAP (Mapping Map), where the symbols represent the client signals modulated onto digital subcarriers of different frequencies. The digital signals are converted to analog-to-digital signals by a DAC (Digital Converter), and then used to generate optical signals via an optical modulator. The various optical signals carrying the subcarriers are converged by a coupler and sent to the receiving communication node.

[0322] As shown in Figure 15, the root node in the optical subcarrier network is the receiving communication node. In this network, the optical signal is simultaneously generated into a digital-analog signal by an optical demodulator, then frequency domain demultiplexed by Analog demultiplexing, and finally converted into a digital signal by an ADC, resulting in multiple digital subcarriers. These are then demapped into client signals by a MapPlate (MAP). Analog demultiplexing can be performed in either the electrical analog domain or the optical analog domain.

[0323] In this system, nodes A and B can be understood as the insertion points of the transmitting communication nodes; node C can be understood as the input point of the optical splitter; node D can be understood as the output point of the optical splitter; and nodes E and F can be jointly understood as the input points of the receiving communication nodes. In actual operation, either A or B can be chosen as a reference point, either E or F can be chosen as a reference point, and either C or D can be chosen as a reference point or both can be chosen as needed.

[0324] For the two schemes mentioned above, reference point A in the diagram represents subcarrier tag information modulation in the digital domain, reference point B represents subcarrier tag information modulation in the analog domain, reference point F represents subcarrier tag information demodulation in the digital domain, and reference points C / D / E represent subcarrier tag information demodulation in the analog domain. At reference points A / B / C / D / E / F, tag information can be exchanged with the management communication node.

[0325] In one exemplary embodiment, FIG16 is a schematic diagram of a subcarrier management device provided in an embodiment of this application. This subcarrier management device is applied to a management communication node. As shown in FIG16, the device includes:

[0326] The subcarrier management module 410 is used to maintain and manage subcarriers using subcarrier tag information.

[0327] In one embodiment, the subcarrier tag information includes: subcarrier identification information.

[0328] In one embodiment, the subcarrier identification information includes at least one of the following:

[0329] The network element number where the subcarrier is located;

[0330] The rack number where the subcarrier is located;

[0331] The subframe number where the subcarrier is located;

[0332] The slot number where the subcarrier is located;

[0333] The port number where the subcarrier is located;

[0334] Subcarrier center frequency or wavelength;

[0335] Subcarrier spectral width.

[0336] In one embodiment, the subcarrier tag information further includes at least one of the following:

[0337] Subcarrier service mapping information;

[0338] Local fault indication information;

[0339] Remote control instruction information.

[0340] In one embodiment, the subcarrier service mapping information includes at least one of the following:

[0341] Subcarrier modulation method;

[0342] Customer business mapping information;

[0343] Forward error correction type;

[0344] Digital signal processing algorithms.

[0345] In one embodiment, the local fault indication information includes at least one of the following:

[0346] No customer signal input indication information;

[0347] Optical path connection interruption indication information;

[0348] Monitoring interruption indication information.

[0349] In one embodiment, the remote control instruction information includes at least one of the following:

[0350] Remote information query instructions;

[0351] Remote fault maintenance instruction information.

[0352] In one embodiment, maintaining and managing subcarriers using subcarrier tag information includes at least one of the following:

[0353] The optical layer subcarrier network structure is maintained and managed using subcarrier identification information;

[0354] Management of in-line service activation for optical layer subcarrier networking is carried out through subcarrier service mapping information;

[0355] Fault management of optical subcarrier networking is achieved through local fault indication information and remote control indication information.

[0356] In one embodiment, the optical layer subcarrier network structure is maintained and managed using subcarrier identification information, including at least one of the following:

[0357] Wavelength allocation is performed on each subcarrier in the optical layer subcarrier network using subcarrier identification information;

[0358] Topology discovery of optical layer subcarrier networks is performed using subcarrier identification information and reference point identification information corresponding to the subcarrier identification information.

[0359] Subcarrier path tracing is performed using subcarrier identification information and reference point identification information corresponding to the subcarrier identification information.

[0360] By using subcarrier identification information and pre-configured reference point expected identification information corresponding to the subcarrier identification information, optical fiber misconnection identification is performed on optical layer subcarrier networking.

[0361] In one embodiment, the reference point identification information includes at least one of the following:

[0362] The reference point's network element number;

[0363] The subframe number where the reference point is located;

[0364] The slot number where the reference point is located;

[0365] The port number where the reference point is located.

[0366] In one embodiment, the management of in-line service activation for optical layer subcarrier networking is performed through subcarrier service mapping information, including:

[0367] Obtain the service mapping capability information set of each reference point in the optical layer subcarrier network;

[0368] Based on the intersection of the information sets of each service mapping capability, subcarrier service mapping information is configured for each subcarrier of the transmitting communication node in the optical layer subcarrier network.

[0369] In one embodiment, fault management of optical layer subcarrier networking is performed using local fault indication information and remote control indication information, including:

[0370] Upon receiving a local fault indication, remote control indication information is generated based on the local fault indication information.

[0371] Configure the remote control indication information to the reference point corresponding to the local fault indication information;

[0372] The system receives feedback from the reference point corresponding to the local fault indication information in response to the remote control indication information, and performs fault management on the optical layer subcarrier network based on the feedback.

[0373] In one embodiment, the subcarrier management device further includes: a tag acquisition and configuration module, used to acquire subcarrier tag information from a reference point of the optical layer subcarrier network before maintaining and managing the subcarriers through subcarrier tag information; or to configure subcarrier tag information to the reference point of the optical layer subcarrier network.

[0374] In one embodiment, the optical subcarrier network includes at least one of the following:

[0375] Point-to-multipoint optical subcarrier networking;

[0376] Multi-point-to-point optical subcarrier networking.

[0377] In one embodiment, the reference point for optical subcarrier networking includes at least one of the following:

[0378] The insertion point of the sending communication node;

[0379] Output point of the sending communication node;

[0380] The input point of the receiving communication node;

[0381] Input point of the optical splitter;

[0382] The output point of the optical splitter;

[0383] The input point of the optical coupler;

[0384] The output point of the optocoupler.

[0385] In one embodiment, obtaining subcarrier tag information from a reference point in the optical subcarrier networking includes:

[0386] When an optical signal is received at the reference point of the optical subcarrier network, the subcarrier tag information obtained by demodulating the optical signal is acquired by the reference point of the optical subcarrier network.

[0387] In one embodiment, demodulating the optical signal includes:

[0388] The optical signal is converted into an analog electrical signal by photoelectric conversion.

[0389] The analog electrical signal is demultiplexed to determine the analog subcarrier;

[0390] Analog-to-digital conversion is performed on the analog subcarriers to determine the digital subcarriers;

[0391] Demodulate the digital subcarriers to determine the subcarrier tag information.

[0392] In one embodiment, demodulating the optical signal includes:

[0393] The optical signal is converted into an analog electrical signal by photoelectric conversion.

[0394] Perform analog-to-digital conversion on analog electrical signals to determine digital electrical signals;

[0395] Demultiplex the digital electrical signal to determine the digital subcarrier;

[0396] Demodulate the digital subcarriers to determine the subcarrier tag information.

[0397] In one exemplary embodiment, FIG17 is a schematic diagram of a data transmission device provided in an embodiment of this application. This data transmission device is applied to a sending communication node. As shown in FIG17, the device includes:

[0398] Carrier modulation module 510 is used to modulate the received customer signal onto digital subcarriers of different frequencies;

[0399] The signal conversion module 520 is used to convert the signals of each digital subcarrier and send the resulting optical signal to the receiving communication node.

[0400] The optical signal includes analog subcarriers corresponding to each digital subcarrier, and subcarrier tag information corresponding to each analog subcarrier.

[0401] In one embodiment, when the transmitting communication node is located in a point-to-multipoint optical subcarrier network, signal conversion is performed on each digital subcarrier, including:

[0402] Each digital subcarrier is subjected to subcarrier tag information addition, frequency division multiplexing, and digital-to-analog conversion to obtain an analog subcarrier containing subcarrier tag information;

[0403] Electro-optical conversion is performed on each analog subcarrier containing subcarrier tag information to determine the optical signal.

[0404] In one embodiment, subcarrier tag information is added, frequency division multiplexing is performed, and digital-to-analog conversion is performed on each digital subcarrier, including at least one of the following:

[0405] Subcarrier tag information is added and frequency division multiplexing is performed on each digital subcarrier, and the processed digital subcarrier containing subcarrier tag information is converted from digital to analog.

[0406] Subcarrier tag information is added to each digital subcarrier, and after digital-to-analog conversion of the digital subcarriers containing subcarrier tag information, frequency division multiplexing is performed on the resulting analog subcarriers containing subcarrier tag information;

[0407] Each digital subcarrier is converted from digital to analog, and the resulting analog subcarriers are then labeled with subcarrier tags and frequency-division multiplexed.

[0408] In one embodiment, frequency division multiplexing of the obtained analog subcarriers and electro-optical conversion of each analog subcarrier containing subcarrier tag information are performed simultaneously.

[0409] In one embodiment, when the transmitting communication node is located in a multi-point-to-point optical subcarrier network, signal conversion is performed on each digital subcarrier, including:

[0410] Add subcarrier tag information and perform digital-to-analog conversion on each digital subcarrier to obtain an analog subcarrier containing subcarrier information;

[0411] Electro-optical conversion is performed on each analog subcarrier containing subcarrier tag information to determine the optical signal.

[0412] In one embodiment, adding subcarrier tag information and performing digital-to-analog conversion on each digital subcarrier includes at least one of the following:

[0413] Subcarrier tag information is added to each digital subcarrier, and digital subcarriers containing subcarrier tag information are converted from digital to analog.

[0414] Each digital subcarrier is converted from digital to analog, and subcarrier tag information is added to the resulting analog subcarriers.

[0415] In one embodiment, the subcarrier tag information includes:

[0416] Subcarrier identification information.

[0417] In one embodiment, the subcarrier tag information further includes at least one of the following:

[0418] Subcarrier service mapping information;

[0419] Local fault indication information;

[0420] Remote control instruction information.

[0421] In one embodiment, subcarrier tag information is added to each digital subcarrier, including at least one of the following:

[0422] Receive the subcarrier identification information configured for each subcarrier by the management communication node, and add the subcarrier identification information to the corresponding subcarrier;

[0423] Based on the characteristics of each digital subcarrier, the corresponding subcarrier identification information is determined, and each subcarrier identification information is added to the corresponding subcarrier.

[0424] Receive the subcarrier service mapping information configured for each subcarrier by the management communication node, and add the subcarrier service mapping information to the corresponding subcarrier;

[0425] When no customer signal input is detected, a corresponding local fault indication message is generated and added to the corresponding subcarrier.

[0426] If an optical path connection interruption is detected, a corresponding local fault indication message is generated and added to the corresponding subcarrier.

[0427] If a monitoring interruption is detected at the management end, a corresponding local fault indication information is generated and added to the corresponding subcarrier.

[0428] Receive remote control indication information configured by the management communication node and add the remote control indication information to the corresponding subcarrier;

[0429] Upon receiving remote control indication information from a remote communication node, a remote control indication result information corresponding to the remote control indication information is generated and added to the corresponding subcarrier.

[0430] In one embodiment, transmitting the obtained optical signal to the receiving communication node includes:

[0431] When the transmitting communication node is located in a point-to-multipoint optical subcarrier network, the obtained optical signal is sent to the receiving communication node through an optical distributor;

[0432] When the transmitting communication node is located in a multi-point-to-point optical subcarrier network, the obtained optical signal is sent to the receiving communication node through an optical coupler.

[0433] In one exemplary embodiment, FIG18 is a schematic diagram of a data transmission device provided in an embodiment of this application. This data transmission device is applied to a receiving communication node. As shown in FIG18, the device includes:

[0434] The signal conversion module 610 is used to convert the received optical signal to obtain multiple digital subcarriers and subcarrier tag information corresponding to each digital subcarrier;

[0435] The customer signal mapping module 620 is used to demap each of the digital subcarriers into a customer signal;

[0436] The optical signal includes analog subcarriers corresponding to each of the digital subcarriers, and subcarrier tag information corresponding to each of the analog subcarriers.

[0437] In one embodiment, the received optical signal is converted to obtain multiple digital subcarriers and tag information corresponding to each digital subcarrier, including at least one of the following:

[0438] The received optical signal is converted into photoelectric signal and then demultiplexed in the frequency domain. The resulting analog subcarrier is converted into digital signal to obtain multiple digital subcarriers. Each digital subcarrier is demodulated to obtain the corresponding subcarrier tag information.

[0439] The received optical signal is sequentially converted from photoelectric to digital and then from analog to digital. The resulting digital signal is then demultiplexed in the frequency domain to obtain multiple digital subcarriers. Each digital subcarrier is then demodulated to obtain the corresponding subcarrier tag information.

[0440] In one embodiment, the subcarrier tag information includes:

[0441] Subcarrier identification information.

[0442] In one embodiment, the subcarrier tag information further includes at least one of the following:

[0443] Subcarrier service mapping information;

[0444] Local fault indication information;

[0445] Remote control instruction information.

[0446] This application embodiment also provides a communication node. Figure 19 is a structural schematic diagram of a communication node provided in this application embodiment. As shown in Figure 19, the communication node provided in this application embodiment includes a memory 720, a processor 710, and a computer program stored in the memory and executable on the processor. When the processor 710 executes the program, it implements the above-mentioned subcarrier management method or data transmission method.

[0447] The communication node may also include a memory 720; the processor 710 in the communication node may be one or more, with one processor 710 as an example in Figure 19; the memory 720 is used to store one or more programs; the one or more programs are executed by the one or more processors 710, causing the one or more processors 710 to implement the subcarrier management method or data transmission method as described in the embodiments of this application.

[0448] The communication node also includes: a communication device 730, an input device 740, and an output device 750.

[0449] The processor 710, memory 720, communication device 730, input device 740 and output device 750 in the communication node can be connected by a bus or other means. Figure 19 shows an example of connection by bus.

[0450] Input device 740 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the communication node. Output device 750 may include display devices such as a display screen.

[0451] The communication device 730 may include a receiver and a transmitter. The communication device 730 is configured to perform information transmission and reception communication under the control of the processor 710.

[0452] The memory 720, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as program instructions / modules corresponding to the subcarrier management method or data transmission method described in the embodiments of this application (e.g., subcarrier management module 410 in a subcarrier management device; carrier modulation module 510 and signal conversion module 520 in a data transmission device; or signal conversion module 610 and client signal mapping module 620). The memory 720 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function, and the data storage area may store data created based on the use of the communication node. Furthermore, the memory 720 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 720 may further include memory remotely located relative to the processor 710, and these remote memories can be connected to the communication node via a network. Examples of such networks include, but are not limited to, the Internet, enterprise intranets, local area networks, mobile communication networks, and combinations thereof.

[0453] This application also provides a storage medium storing a computer program, which, when executed by a processor, implements any of the subcarrier management methods or data transmission methods described in this application.

[0454] Optionally, the subcarrier management method or data transmission method is applied to a first communication node and includes: acquiring a bit sequence to be encoded; determining a target base matrix from the base matrix set based on the encoding requirement information of the bit sequence to be encoded and the support information of each base matrix in the base matrix set; encoding the bit sequence to be encoded using the target base matrix to determine a target encoded bit sequence; wherein the base matrix set includes at least two base matrices.

[0455] Optionally, the subcarrier management method or data transmission method is applied to a second communication node, including: receiving a bit sequence to be decoded; determining a target base matrix from the base matrix set based on the decoding requirement information of the bit sequence to be decoded and the support information of each base matrix in the base matrix set; and decoding the bit sequence to be decoded using the target base matrix to determine a target decoded bit sequence; wherein the base matrix set includes at least two base matrices.

[0456] The computer storage medium in this application embodiment can be any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. For example, a computer-readable storage medium can be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. The computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0457] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit programs for use by or in connection with an instruction execution system, apparatus, or device.

[0458] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, radio frequency (RF), etc., or any suitable combination thereof.

[0459] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0460] Optionally, embodiments of the present invention also provide a computer program product, including a computer program that, when executed by a processor, implements the subcarrier management method or data transmission method provided in any embodiment of the present invention.

[0461] The above description is merely an exemplary embodiment of this application and is not intended to limit the scope of protection of this application.

[0462] Those skilled in the art will understand that the term user terminal encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicle-mounted mobile stations.

[0463] Generally, the various embodiments of this application can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while others can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although this application is not limited thereto.

[0464] Embodiments of this application can be implemented by executing computer program instructions through the data processor of a mobile device, for example, in a processor entity, or through hardware, or through a combination of software and hardware. The computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages.

[0465] Any block diagram of logical flow in the accompanying drawings of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored on memory. Memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical storage devices and systems (Digital Video Disc (DVD) or Compact Disk (CD), etc.). Computer-readable media may include non-transitory storage media. The data processor may be of any type suitable to the local technical environment, such as, but not limited to, general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and processors based on multi-core processor architectures.

[0466] A detailed description of exemplary embodiments of this application has been provided above through exemplary and non-limiting examples. However, various modifications and adjustments to the above embodiments will be apparent to those skilled in the art when considered in conjunction with the accompanying drawings and claims, without departing from the scope of this application. Therefore, the proper scope of this application will be determined by the claims.

Claims

1. A subcarrier management method, applied to a management-end communication node, comprising: Subcarriers are maintained and managed using subcarrier tag information.

2. The subcarrier management method according to claim 1, wherein, The subcarrier tag information includes: Subcarrier identification information.

3. The subcarrier management method according to claim 2, wherein, The subcarrier identification information includes at least one of the following: The network element number where the subcarrier is located; The rack number where the subcarrier is located; The subframe number where the subcarrier is located; The slot number where the subcarrier is located; The port number where the subcarrier is located; Subcarrier center frequency or wavelength; Subcarrier spectral width.

4. The subcarrier management method according to claim 2, wherein, The subcarrier tag information also includes at least one of the following: Subcarrier service mapping information; Local fault indication information; Remote control instruction information.

5. The subcarrier management method according to claim 4, wherein, The subcarrier service mapping information includes at least one of the following: Subcarrier modulation method; Customer business mapping information; Forward error correction type; Digital signal processing algorithms.

6. The subcarrier management method according to claim 4, wherein, The local fault indication information includes at least one of the following: No customer signal input indication information; Optical path connection interruption indication information; Monitoring interruption indication information.

7. The subcarrier management method according to claim 4, wherein, The remote control instruction information includes at least one of the following: Remote information query instructions; Remote fault maintenance instruction information.

8. The subcarrier management method according to claim 4, wherein, The maintenance and management of subcarriers through subcarrier label information includes at least one of the following: The optical layer subcarrier network structure is maintained and managed using the subcarrier identification information. The optical layer subcarrier networking is managed for in-line service activation using the subcarrier service mapping information. Fault management of optical subcarrier networking is performed using the local fault indication information and the remote control indication information.

9. The subcarrier management method according to claim 8, wherein, The structural maintenance and management of the optical layer subcarrier network using the subcarrier identification information includes at least one of the following: Wavelength allocation is performed on each subcarrier in the optical layer subcarrier network using the subcarrier identification information; The optical layer subcarrier network topology is discovered using the subcarrier identification information and the reference point identification information of the reference point corresponding to the subcarrier identification information. Subcarrier path tracing is performed using the subcarrier identification information and the reference point identification information of the reference point corresponding to the subcarrier identification information. The optical fiber misconnection is identified by using the subcarrier identification information and the pre-configured reference point expectation identification information corresponding to the reference point of the subcarrier identification information.

10. The subcarrier management method according to claim 9, wherein, The reference point identification information includes at least one of the following: The reference point's network element number; The subframe number where the reference point is located; The slot number where the reference point is located; The port number where the reference point is located.

11. The subcarrier management method according to claim 8, wherein, The management of in-line service activation for optical layer subcarrier networking through the subcarrier service mapping information includes: Obtain the service mapping capability information set of each reference point in the optical layer subcarrier network; Based on the intersection of the service mapping capability information sets, subcarrier service mapping information is configured for each subcarrier of the transmitting communication node in the optical layer subcarrier network.

12. The subcarrier management method according to claim 8, wherein, The fault management of optical layer subcarrier networking through the local fault indication information and the remote control indication information includes: Upon receiving the local fault indication information, remote control indication information is generated based on the local fault indication information; Configure the remote control indication information to a reference point corresponding to the local fault indication information; The system receives feedback from the reference point corresponding to the local fault indication information regarding the remote control indication information, and performs fault management on the optical subcarrier network based on the feedback.

13. The subcarrier management method according to any one of claims 1-12, further comprising, before maintaining and managing the subcarriers through subcarrier tag information: Subcarrier tag information is obtained from the reference point of optical layer subcarrier networking; or Configure subcarrier tag information at the reference point of the optical layer subcarrier network.

14. The subcarrier management method according to claim 13, wherein, The optical subcarrier networking includes at least one of the following: Point-to-multipoint optical subcarrier networking; Multi-point-to-point optical subcarrier networking.

15. The subcarrier management method according to claim 14, wherein, The reference point for the optical subcarrier networking includes at least one of the following: The insertion point of the sending communication node; Output point of the sending communication node; The input point of the receiving communication node; Input point of the optical splitter; The output point of the optical distributor; The input point of the optical coupler; The output point of the optocoupler.

16. The subcarrier management method according to claim 13, wherein, The acquisition of subcarrier tag information from the reference point of the optical layer subcarrier network includes: When an optical signal is received at the reference point of the optical subcarrier network, the reference point of the optical subcarrier network obtains the subcarrier tag information obtained by demodulating the optical signal.

17. The subcarrier management method according to claim 16, wherein, The demodulation of the optical signal includes: The optical signal is converted into an analog electrical signal by photoelectric conversion. The analog electrical signal is demultiplexed to determine the analog subcarrier; The analog subcarriers are converted from analog to digital to determine the digital subcarriers; The digital subcarrier is demodulated to determine the subcarrier tag information.

18. The subcarrier management method according to claim 16, wherein, The demodulation of the optical signal includes: The optical signal is converted into an analog electrical signal by photoelectric conversion. The analog electrical signal is converted from analog to digital to determine the digital electrical signal; The digital electrical signal is demultiplexed to determine the digital subcarrier; The digital subcarrier is demodulated to determine the subcarrier tag information.

19. A data transmission method, applied to a sending communication node, comprising: The received customer signals are modulated onto digital subcarriers of different frequencies; The digital subcarriers are converted into signals, and the resulting optical signals are sent to the receiving communication node. The optical signal includes analog subcarriers corresponding to each of the digital subcarriers, and subcarrier tag information corresponding to each of the analog subcarriers.

20. The data transmission method according to claim 19, wherein, In the case where the transmitting communication node is located in a point-to-multipoint optical subcarrier network, the signal conversion for each of the digital subcarriers includes: Each of the digital subcarriers is subjected to subcarrier tag information addition, frequency division multiplexing, and digital-to-analog conversion to obtain an analog subcarrier containing subcarrier tag information; The analog subcarriers containing subcarrier tag information are electro-optically converted to determine the optical signal.

21. The data transmission method according to claim 20, wherein, The process of adding subcarrier tag information, frequency division multiplexing, and digital-to-analog conversion to each of the digital subcarriers includes at least one of the following: Subcarrier tag information is added and frequency division multiplexing is performed on each of the digital subcarriers, and the processed digital subcarriers containing subcarrier tag information are then converted from digital to analog. Subcarrier tag information is added to each of the digital subcarriers, and after digital-to-analog conversion of the digital subcarriers containing subcarrier tag information, frequency division multiplexing is performed on the resulting analog subcarriers containing subcarrier tag information. The digital subcarriers are converted from digital to analog, and the resulting analog subcarriers are labeled with subcarrier tags and frequency-division multiplexed.

22. The data transmission method according to claim 21, wherein, The frequency division multiplexing of the obtained analog subcarriers and the electro-optical conversion of each of the analog subcarriers containing subcarrier tag information are performed simultaneously.

23. The data transmission method according to claim 19, wherein, In the case where the transmitting communication node is located in a multi-point-to-point optical subcarrier network, the signal conversion for each of the digital subcarriers includes: Add subcarrier tag information and perform digital-to-analog conversion on each of the digital subcarriers to obtain an analog subcarrier containing subcarrier information; The analog subcarriers containing subcarrier tag information are electro-optically converted to determine the optical signal.

24. The data transmission method according to claim 23, wherein, The process of adding subcarrier tag information and performing digital-to-analog conversion on each of the digital subcarriers includes at least one of the following: Subcarrier tag information is added to each of the digital subcarriers, and digital subcarriers containing subcarrier tag information are converted from digital to analog. The digital subcarriers are converted from digital to analog, and subcarrier tag information is added to the resulting analog subcarriers.

25. The data transmission method according to claim 20, wherein, The subcarrier tag information includes: Subcarrier identification information.

26. The data transmission method according to claim 25, wherein, The subcarrier tag information also includes at least one of the following: Subcarrier service mapping information; Local fault indication information; Remote control instruction information.

27. The data transmission method according to claim 26, wherein, The step of adding subcarrier tag information to each of the digital subcarriers includes at least one of the following: Receive the subcarrier identification information configured for each subcarrier by the management communication node, and add the subcarrier identification information to the corresponding subcarrier; Based on the characteristics of each digital subcarrier, the corresponding subcarrier identification information is determined, and the subcarrier identification information is added to the corresponding subcarrier. Receive the subcarrier service mapping information configured for each subcarrier by the management terminal communication node, and add the subcarrier service mapping information to the corresponding subcarrier; When no customer signal input is detected, a corresponding local fault indication information is generated and added to the corresponding subcarrier; If an optical path connection interruption is detected, a corresponding local fault indication information is generated and added to the corresponding subcarrier. If a monitoring interruption is detected at the management end, a corresponding local fault indication information is generated and added to the corresponding subcarrier. Receive remote control indication information configured by the management communication node, and add the remote control indication information to the corresponding subcarrier; Upon receiving remote control indication information from a remote communication node, remote control indication result information corresponding to the remote control indication information is generated, and the remote control indication result information is added to the corresponding subcarrier.

28. The data transmission method according to any one of claims 19-27, wherein, The step of sending the obtained optical signal to the receiving communication node includes: When the transmitting end communication node is located in a point-to-multipoint optical layer subcarrier network, the obtained optical signal is sent to the receiving end communication node through an optical distributor; When the transmitting end communication node is located in a multi-point-to-point optical layer subcarrier network, the obtained optical signal is transmitted to the receiving end communication node through an optical coupler.

29. A data transmission method, applied to a receiving communication node, comprising: The received optical signal is converted to obtain multiple digital subcarriers and subcarrier tag information corresponding to each digital subcarrier; Demap each of the digital subcarriers into a customer signal; The optical signal includes analog subcarriers corresponding to each of the digital subcarriers, and subcarrier tag information corresponding to each of the analog subcarriers.

30. The data transmission method according to claim 29, wherein, The step of converting the received optical signal to obtain multiple digital subcarriers and tag information corresponding to each digital subcarrier includes at least one of the following: The received optical signal is converted into photoelectric signal and then demultiplexed in the frequency domain. The resulting analog subcarrier is converted into digital signal to obtain multiple digital subcarriers. Each digital subcarrier is demodulated to obtain the corresponding subcarrier tag information. The received optical signal is sequentially converted from photoelectric to digital and then from analog to digital. The resulting digital signal is then demultiplexed in the frequency domain to obtain multiple digital subcarriers. Each digital subcarrier is then demodulated to obtain the corresponding subcarrier tag information.

31. The data transmission method according to claim 29, wherein, The subcarrier tag information includes: Subcarrier identification information.

32. The data transmission method according to claim 31, wherein, The subcarrier tag information also includes at least one of the following: Subcarrier service mapping information; Local fault indication information; Remote control instruction information.

33. A communication node, comprising: The program includes a memory, a processor, a program stored in the memory and executable on the processor, and a data bus for implementing communication between the processor and the memory. When executed by the processor, the program implements the steps of the subcarrier management method as described in any one of claims 1-18 or the data transmission method as described in any one of claims 19-32.

34. A storage medium for computer-readable storage, storing one or more programs, said one or more programs being executable by one or more processors to implement the steps of the subcarrier management method of any one of claims 1-18 or the data transmission method of any one of claims 19-32.

35. A computer program product comprising a computer program that, when executed by a processor, implements the steps of the subcarrier management method of any one of claims 1-18 or the data transmission method of any one of claims 19-32.

Images