160 results about "Optical Transport Network" patented technology

The invention relates to the technical field of optical communication, in particular to an algorithm service system and method for an optical transport network, and the system comprises an optical network sensing module which is used for collecting optical layer performance parameters, service flow data and node equipment operation states of the optical transport network; the deep algorithm decision center predicts service traffic based on a space-time diagram convolutional network, and optimizes routing wavelength allocation through reinforcement learning; the strategy adaptation module is used for dynamically generating an operation and maintenance strategy and an energy-saving scheduling instruction according to the prediction result and the optimization scheme; the risk assessment unit is used for assessing a link fault risk, a service interruption risk and a network congestion risk in real time, quantifying a risk weight through an analytic hierarchy process, and optimizing an operation and maintenance strategy in combination with historical fault data; and the intelligent resource reconstruction unit is used for performing optical channel reconstruction according to the optimized operation and maintenance strategy, dynamically allocating optical layer resources or switching redundant transmission paths. Therefore, the problems of poor strategy adaptability, low resource scheduling efficiency, insufficient fault-tolerant capability and the like in the prior art are solved.

The invention provides a method and a device for transmitting data, which can be applied to an OTN (Optical Transport Network) system, reduce the processing cost during service data mapping and achieve the purpose of improving the system performance. The method comprises the steps that firstly, i paths of first optical transport network (OTN) signals are mapped to second OTN signals, and the second OTN signals comprise n paths of third OTN signals; and then generating a fourth OTN signal from the second OTN signal based on the X-byte interleaving granularity, and sending the fourth OTN signal. Wherein the mapping granularity adopted for mapping the jth path of first OTN signal in the i paths of first OTN signals to the second OTN signal is nj * X bytes, the rate of the jth path of first OTN signal is nj times of the reference rate, i is an integer greater than or equal to 1, j is equal to 1, 2, 3... i, nj is an integer greater than or equal to 1, and n and X are integers greater than 1.

Optical add-drop multiplexers (OADMs) connect two or more network terminals in an optical network to perform wavelength division multiplexing. If a channel in an optical connection between an OADM and a terminal is interrupted for any reason such that the signal in the channel drops, transient effects such as spectral hole burning may occur which impacts neighboring channels. One approach to avoiding such transient effects in channel drop scenarios includes filling in the spectral hole so that neighboring channels are transmitted without any degradation. An OADM includes a broad spectral source, such as an amplified spontaneous emission (ASE) source, and an optical switch that replaces dropped channels with ASE. By providing an automatic mechanism for spectrum filling within the OADM itself in this way, high-capacity optical transmission networks are stable against transient effects even in the presence of channel drops or fiber cuts.

The invention provides a graph data communication intensity mapping method and system based on optical transport network topology. According to the method, an adjacent matrix is established by extracting graph data structure information, vertex centrality and a clustering coefficient are calculated, and a graph data communication feature matrix is generated; oTN network equipment information and optical link topology are collected, link parameters and wavelength resource states are measured, and an OTN physical network feature matrix is obtained; establishing a double-layer mapping relation matrix through a resource mapping algorithm; integrating the communication frequency, the time delay sensitivity, the bandwidth requirement, the wavelength resource and the topological matching degree, and calculating a communication strength weight matrix; generating a candidate layout scheme, performing multi-dimensional evaluation, and determining an optimized data layout scheme; and dynamically adjusting the mapping relation by adopting an incremental updating algorithm. According to the invention, the efficient collaboration of the graph computing task and the optical transport network resource is realized, and the performance and resource utilization efficiency of the distributed graph computing system are obviously improved.

The invention provides an SDH / PDH payload real-time bandwidth analysis method based on time synchronization, and relates to the technical field of transmission networks, and the method comprises the steps: obtaining the network state information of each network working node in an optical transmission network; preprocessing the original data frame set to obtain an average effective load corresponding to each data frame in the data frame set, and calculating an effective load dynamic estimation value based on the average effective load and a historical average effective load; obtaining a network transmission resource allocation strategy of an optical link between any two adjacent network working nodes and a network transmission resource parameter corresponding to the network transmission resource allocation strategy according to a preset constraint condition and the effective load dynamic estimation value; and obtaining a comprehensive evaluation index of the current data frame according to the network transmission resource parameter and the load bandwidth performance function, and adjusting a flow distribution path of the optical transmission network according to the comprehensive evaluation index. According to the invention, the dynamic self-adaptive adjustment of the network flow can be realized.

The invention discloses a service transmission method and device of an optical transmission network, electronic equipment and a storage medium, which can be applied to the technical field of communication. According to the invention, after the detection device is arranged at the network element port of the optical transmission network, the link data flow information detected by the detection device in real time is obtained, and then the routing path state of the optical transmission network is analyzed according to the link data flow information and the preset standard information. Performing routing path optimization according to a routing path state analysis result to obtain a candidate routing path; and after fault prediction positioning is carried out on the candidate routing paths to obtain a fault prediction positioning result, a target routing path is determined from the candidate routing paths in combination with the type of the service to be transmitted, so that service transmission is carried out through the target routing path. Therefore, the transmission process of the service data can be accurately completed without depending on national engineering data or field measurement data, the service transmission time delay can be effectively reduced, and the service transmission efficiency is improved.

The invention discloses an electric power communication optical transmission service path optimization method based on reinforcement learning, and relates to the technical field of electric power communication optical transmission service path optimization, and the method specifically comprises the following steps: obtaining link quality information generated by each target link during a periodic quality fluctuation period in real time, respectively generating a link fluctuation amplitude index and a link fluctuation rule index of each target link; constructing a link quality evaluation model for the generated link fluctuation amplitude index and the link fluctuation rule index of each target link, and generating a quality fluctuation coefficient of each target link; and performing evaluation and analysis based on the generated quality fluctuation coefficient of each target link, and evaluating the periodical fluctuation degree of the link quality of each target link during the periodical quality fluctuation period. According to the method, the problem that periodic fluctuation of link quality in an electric power communication optical transmission network is not adapted in time is solved, and stable transmission and efficient execution of key tasks are ensured through real-time monitoring and dynamic path optimization.

An Optical Time-Domain Reflectometer (OTDR) trace correction method, an electronic device, and a storage medium are disclosed. The method may include: establishing a parameter decoupling equation according to a fiber loss coefficient and a Stimulated Raman Scattering (SRS) transfer coefficient in response to ignoring an SRS transfer amount amplified or absorbed by an OTDR wavelength in an Optical Transport Network (OTN) service; disabling a service wavelength of an OTN of an optical fiber transmission system, and acquiring, according to the parameter decoupling equation, a first OTDR trace of an OTDR simulation wavelength in the optical fiber transmission system when the service wavelength of the OTN is in a disabled state; determining a fiber loss coefficient according to the first OTDR trace.

This invention proposes a time-synchronized real-time bandwidth analysis method for SDH / PDH payloads, relating to the field of transmission network technology. The method includes: acquiring network status information of each network working node in the optical transmission network; preprocessing the original data frame set to obtain the average payload corresponding to each data frame, and calculating a dynamic estimate of the payload based on the average payload and historical average payloads; obtaining the network transmission resource allocation strategy for the optical link between any two adjacent network working nodes and the corresponding network transmission resource parameters according to preset constraints and the dynamic payload estimate; obtaining a comprehensive evaluation index for the current data frame based on the network transmission resource parameters and the payload bandwidth performance function, and adjusting the traffic allocation path of the optical transmission network according to the comprehensive evaluation index. This invention helps to achieve dynamic adaptive adjustment of network traffic.

The invention discloses a multidimensional communication sensing system integrating an optical transmission network and BOTDR / DAS distributed sensing, and relates to the technical field of optical fiber communication and optical fiber sensing. The system comprises an OTN transmission subsystem, an optical fiber link and a BOTDR / DAS fusion sensing subsystem. Wherein the OTN transmission subsystem is used for realizing high-capacity data transmission through an optical fiber link; and the BOTDR / DAS fusion sensing subsystem is used for realizing strain, temperature and vibration distributed measurement of an optical fiber link through a Brillouin scattering and Rayleigh backscattering mechanism. According to the system, a double-self-heterodyne demodulation architecture and a reverse wavelength division multiplexing mechanism are adopted, cooperative demodulation and high-isolation transmission of BOTDR and DAS signals are achieved under the common-fiber condition, and high-speed communication and distributed temperature, strain and vibration synchronous monitoring within the 100 km range can be achieved. According to the method, a technical foundation can be laid for realizing physical layer intelligentization of the in-service power OTN.

This disclosure provides a message verification method and apparatus for optical transport network (OTN) devices, as well as a network management system; it relates to the field of communication technology. The method includes: in response to receiving a creation completion response message for a target service sent by an OTN device, obtaining a message to be verified associated with the target service; the creation completion response message includes service information; performing content verification on the message information for each object category in the message to be verified according to the object category and the corresponding object verification template in each category; if the content verification passes, performing concatenation verification on the message to be verified according to the service information to determine the message verification result. This disclosure can, to a certain extent, solve the problem of low accuracy and efficiency in verifying services created by OTN devices.

The invention belongs to the technical field of optical transport networks (OTN), and particularly relates to a resource identifier storage and reading method for network management system data acquisition of OTN and WDM communication equipment, which comprises the following steps of: when the network management system data acquisition and reading are performed on the OTN and WDM communication equipment, performing bidirectional transcoding conversion between a resource identifier in a five-section layered form and an rmUID (Radio Mode Unified Identifier) identifier; a database static mapping table is prevented from being introduced, disk IO is reduced, the processing process is carried out in a memory, and the conversion efficiency is effectively improved; meanwhile, the 36-system is fully used for encoding each encoding segment in the rmUID, and under the encoding limiting condition that the longest bit of the rmUID limits 16 bits, the data encoding space is increased by about 10000 times compared with a 35-system and separator scheme, so that the utilization rate of the encoding space is expanded and increased to the maximum extent; the problems that in the prior art, conversion efficiency is poor, and the utilization rate of coding space is poor are effectively solved, and the method has good technical application prospects.

The embodiment of the invention provides an optical transport network signal processing method, a storage medium and an electronic device, and the method comprises the steps: regularly adding alignment mark information into an optical transport network signal to obtain a first signal, regularly adding forward error correction information into the first signal to obtain a second signal, and distributing the second signal to a plurality of channels, a plurality of channel signals are obtained, and the channel signal on each channel is sent. According to the embodiment of the invention, flexible splitting of the optical transport network signal can be realized, and the problems of complex implementation and poor adaptability of hardware for multi-channel transmission of the optical transport network signal in related technologies are solved.

The embodiment of the invention provides an optical network bandwidth adjusting method which is applied to an intermediate node, the intermediate node is located in networking of a passive optical network PON and an optical transport network OTN, the intermediate node bears an optical service unit OSU, receives a bandwidth adjusting request sent by a source node, obtains available bandwidth information, and adjusts the bandwidth according to the bandwidth adjusting request and the available bandwidth information. And generating a bandwidth adjustment decision result, sending the bandwidth adjustment request to the host node, and performing bandwidth adjustment on the OSU or PON side according to the bandwidth adjustment decision result. According to the invention, the problems that the PON and the OSU cannot cooperatively carry out bandwidth adjustment, resource reservation required by a head end node cannot be realized, and lossless rate adjustment cannot be realized in CBR network connection in related technologies are solved, and automatic lossless bandwidth adjustment when the OSU carries out transmission through the PON network is realized.

The embodiment of the present disclosure provides a service processing method in an optical transport network, comprising: mapping customer service into a service container; and mapping the service container into an optical transport network frame, wherein a payload area of the optical transport network frame is composed of a payload block, the payload block comprises an overhead part, and the overhead part comprises an indication identifier, the indication identifier being used to indicate that data carried by the payload block is service container data or padding data. The embodiment of the present disclosure also provides an optical transport network service processing device, an electronic device and a computer readable medium.

The present disclosure provides an optical network fault location method, apparatus, and related equipment, relating to the field of optical transport network communication technology. The method comprises: obtaining at least one alarm data of the optical network; extracting triple information of each alarm data, wherein the triple information contains at least two entities and the relationship between the two entities; constructing a corresponding alarm knowledge graph based on the triple information of each alarm data; inputting the alarm knowledge graph of each alarm data into a pre-trained gated graph neural network model, and outputting the fault probability corresponding to each entity in the alarm knowledge graph; and determining the fault location in the optical network based on the fault probability corresponding to each entity in the alarm knowledge graph. The present disclosure can improve the accuracy and efficiency of optical network fault location.

This invention discloses a digital twin-driven multi-agent collaborative operation and maintenance method for optical transmission networks, belonging to the field of optical transmission network operation and maintenance control technology. The method collects optical network topology, device status, link performance, alarm information, and service bearer relationships; constructs a real-time mapped digital twin model and fault propagation graph; filters executable actions based on the service bearer constraint matrix; releases the action control token through a twin state difference gate; and has the action executed by the action agent and the verification agent perform multi-source verification and versioned write-back. This scheme can reduce the risk of mishandling and concurrent conflicts, and improve the reliability of fault location, automatic handling, and closed-loop verification.

The present application provides a first optical terminal multiplexer (OTM), an optical control method, an apparatus, and a system, capable of being applied to an optical transport network. The first OTM comprises a first wavelength selective switch (WSS) and a first coupler; the first WSS is configured to receive a first service optical signal of a first wavelength and a first dummy optical signal of a second wavelength, combine the first service optical signal and the first dummy optical signal, and transmit a combined signal to the first coupler; and the first coupler is configured to combine the first service optical signal and the first dummy optical signal and transmit the combined signal to an optical fiber. The first WSS in the first OTM provided by the present application, as an access component for the first service optical signal and the first dummy optical signal, supports bandwidth adjustment and attenuation control of ports, preventing conflict between the first dummy optical signal and the first service optical signal; in addition, by introducing the first coupler, parallel operation of multiple WSSs can be supported, meeting the requirements for large-scale add / drop operations in the OTM, and improving system transmission performance.

The application discloses a routing method and device of a multi-layer multi-domain optical transport network. The method comprises the following steps: receiving a service request initiated by a starting Ethernet NEP in a source control domain network; determining a plurality of intermediate NEPs between the source control domain network and a destination control domain network in the service request; constructing a topology matrix according to the plurality of intermediate NEPs, and determining a target transmission link with the lowest link cost and meeting a preset constraint condition according to the topology matrix; and routing the service request from the starting Ethernet NEP to a terminal Ethernet NEP in the destination control domain network according to the target transmission link. The application solves the technical problem of poor accuracy and low efficiency of a determined routing link when a fixed routing strategy or a random routing strategy is used to route cross-domain services.

The invention relates to the technical field of wireless communication, and provides a photoelectric hybrid satellite network, a communication method, a communication device, communication equipment and a storage medium, and the network comprises a first-class satellite node which is provided with a first router and first optical transport network equipment and is used for providing access of a first-class service, transmitting the first type of service based on the first router or the first optical transport network device; and the second-class satellite node is provided with a second router and is used for providing access of a second-class service and transmitting the second-class service based on the second router. According to the embodiment of the invention, the cost of end-to-end physical isolation communication in the photoelectric hybrid satellite network can be reduced.

The invention discloses an optical signal channel structure analysis system based on a new generation of mobile communication networking, which belongs to the field of optical communication data, and comprises the following steps: a data acquisition module receives an OTN (Optical Transport Network) signal and an SDH (Synchronous Digital Hierarchy) signal; the OTN channel analysis module carries out channel structure analysis on the accessed OTN signal and carries out OTN demultiplexing and de-encapsulation mapping processing to obtain OTN channel structure information; the SDH channel analysis module is used for carrying out channel structure analysis on the accessed SDH signal and normalizing the SDH signal into SDH channel structure information; the channel structure issuing configuration module carries out regular conversion on the OTN channel structure information and the SDH channel structure information obtained through analysis, and issues the information to the ZYNQ control chip; the channel structure reporting module reports and pushes the channel structure information of the whole port to the rear-end signal processing module; and the automatic polling module performs an automatic real-time polling mechanism on the accessed OTN signal and SDH signal. The system provided by the invention can effectively realize the characteristic of integrated input and output of channelized equipment.

This application discloses an optical fiber, an optical amplifier, and an optical transmission network for expanding the gain spectral width of optical fiber signal amplification and achieving long-distance broadband transmission. The optical fiber provided in this application includes: a first doped layer, a second doped layer, and a cladding. The second doped layer is located outside the first doped layer, and the cladding is located outside the second doped layer. The second and first doped layers are composed of different materials. The cladding is used to reflect pump light, as well as first-band and second-band signal light, through its inner wall. The first doped layer is used to amplify the first-band signal light using the energy of the pump light. The second doped layer is used to amplify the second-band signal light using the energy of the pump light.

The invention provides a data transmission method and device, which can be applied to an OTN (Optical Transport Network) system so as to achieve the purposes of reducing overhead and improving transmission performance. The method comprises the following steps: acquiring service data, mapping the service data into a data frame, and sending the data frame. Wherein the data frame comprises a plurality of overhead areas and a plurality of payload areas, the plurality of overhead areas are used for bearing overhead information, the plurality of payload areas are used for bearing service data, the plurality of overhead areas comprise a first overhead area and a plurality of second overhead areas, the first overhead area is located in the first n rows of the data frame, and the plurality of second overhead areas and the plurality of payload areas are distributed in an interleaved mode, n is an integer greater than or equal to 1.

Systems and methods for Flexible Optical Transport Network (FlexO) remote deskew procedure include, at a terminating receiver (30, 54), detecting relative skew between multiple interfaces (56, 62) in a group in a FlexO network (10, 50, 80), and signaling information based on the detected skew to one or more remote transceivers (26, 28, 52) located in a backwards direction relative to the receiver (30, 54). At a remote transceiver (26, 28, 52), the systems and methods include, based on detected skew between multiple interfaces at the terminating receiver (30, 54), receiving skew information therefrom, and causing alignment of the multiple interfaces based on the received skew information.

The invention provides an equipment detection method, electronic equipment and a program product, and relates to the technical field of optical communication equipment testing. The method comprises the steps that access type quantum optical transport network equipment is managed through a network management protocol, multi-level operation data of the access type quantum optical transport network equipment are collected, and the multi-level operation data comprise network element layer data, board card layer data, port layer data and connection layer data; based on the multi-level operation data, automatic detection is executed on the access type quantum optical transport network equipment, and the automatic detection comprises comprehensive verification of integrity of data of all levels, consistency of association relations between objects and adaptability of layer protocols; and performing intelligent analysis on the result of the automatic detection based on an artificial intelligence model to generate a detection result, the detection result including whether the equipment detection is passed or not, a specific reason that the equipment detection is not passed, and a processing suggestion for the specific reason. According to the embodiment of the invention, accurate and efficient equipment detection can be ensured.

The embodiment of the invention provides an optical transport network signal processing method, a storage medium and an electronic device, and the method comprises the steps: deleting the overhead of an optical transport network signal, and obtaining a first signal; adding forward error correction check to the first signal to obtain a second signal; and writing overhead at a specific position of the second signal to obtain a third signal, and sending the third signal. According to the method provided by the embodiment of the invention, the overhead rate of the optical transport network signal can be zero, so that the rate of the optical transport network signal is reduced.

A method and device for adjusting optical power flatness of a C+L optical transport network, the method comprising: based on services of C-band and L-band optical power flatness exceeding a preset flatness threshold, grouping and flattening single-wave optical power of service originating of each band to obtain a first single-wave attenuation value required by each single-wave optical power; calculating gain slope of an amplifier in a full-wave state of each type of fiber in each band respectively; issuing the first single-wave attenuation value, the gain slope and the expected combined power of the amplifier of each band to the corresponding service source device respectively, and ending the adjustment if the optical power flatness of each service of the C-band and the L-band is within the corresponding preset flatness threshold. The adjustment of the C+L optical transport network in combination with the first single-wave attenuation value, the expected combined power, the actual combined power and the gain slope can quickly and effectively improve the optical power flatness of the C+L optical transport network.

The application provides a data multiplexing method and device and a data demultiplexing method and device, relates to the technical field of optical transport networks, and is used for reducing the processing time delay of OSU and the end-to-end transmission time delay. The data multiplexing method comprises the following steps: acquiring at least one OSU and at least one low-order ODU; mapping the at least one OSU into a first ODTU and mapping the at least one low-order ODU into a second ODTU; and multiplexing the first ODTU and the second ODTU into a high-order ODU, so that the OSU and the low-order ODU with different granules and different rates are multiplexed into the high-order ODU through one-level multiplexing.

The invention discloses an optical transmission network equipment communication method and equipment, and relates to the technical field of optical transmission network equipment communication, and the method comprises the steps: obtaining a frame identifier of an equipment frame where a single board is located, and a slot identifier of a slot where the single board is located; according to the frame identifier and the slot identifier, a transparent inter-process communication service address of a single board is determined, and the single board comprises a main control board and a service line card board; and performing communication between the single board and other single boards in the cluster based on the transparent inter-process communication service address. According to the method, the addressing information required by communication and the fixed physical position information of the OTN equipment are bound and mapped, so that the tight coupling relationship among a communication protocol, a physical carrier and an upper-layer application is radically relieved, and the system maintenance complexity and the upgrading cost caused by the change of a communication infrastructure are remarkably reduced.

The invention provides a DCN simulation method, the DCN is used for monitoring an optical transport network, and the method comprises the steps: carrying out the simulation of a DCN interface part through behavior simulation, and obtaining an interface network model; the DCN interface part comprises the optical transport network and a target connection structure, and the target connection structure is a structure connected with the optical transport network in the DCN; simulating a DCN forwarding part through network function virtualization to obtain a forwarding network model; the DCN forwarding part comprises a link used for forwarding a data packet in the DCN. The invention further provides data communication network simulation equipment, a computer readable medium and a computer program product.