83 results about "Optical Transport Network" patented technology

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.

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.

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 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.

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.

This application provides a wavelength router, an optical transmission network, and a data center, aiming to reduce the size of the wavelength router. In the wavelength router provided by this application, the grating structure is integrated on the second outer wall of the first optical prism, improving the integration density of the wavelength router. Simultaneously, the first outer wall forms a cylindrical reflector. A light beam input from the fiber array passes through the cylindrical reflector and the grating structure to a deflection unit. After being deflected by the deflection unit, it passes through the grating structure and the cylindrical reflector again before being output to the fiber array. This folds the optical path of the light beam between the fiber array, the deflection unit, and the grating structure, reducing the size of the wavelength router.

The invention provides a convergence ring construction method and device, electronic equipment and a storage medium, and relates to the technical field of metro optical transport network planning. The method comprises the following steps: acquiring a path length matrix corresponding to all core machine rooms and all convergence machine rooms in the metro optical transport network; constructing a full-connection network topological structure corresponding to all the core machine rooms according to the path length matrix; performing clustering processing on all the convergence machine rooms according to the path length matrix and predetermined administrative region information to generate a plurality of corresponding target clusters; and constructing a corresponding target convergence ring according to the path length matrix and all the target clusters, and uploading the target convergence ring to a corresponding core machine room based on the full-connection network topology structure and the path length matrix. According to the method, the difference between a planning result and actual deployment is reduced, and meanwhile, the convergence ring construction effect is also improved.

In an experimental environment including a test system that adds an ASE noise to signal light between a transmitting transponder and a receiving transponder connected in a back-to-back manner, OSNR of the signal light and BER of the signal light received by the receiving transponder are measured while changing a ratio of the signal light to the ASE noise, SNRASE_test of the signal light to which the ASE noise is added is obtained, and total SNRTOT including the test system and the transponders is obtained. SNRTRX indicating an amount of the noise in the transponders is obtained. In a commercial environment in which the test system is provided at upstream of the receiving transponder between the transmitting transponder and the receiving transponder connected via an optical transmission network, the same measurement as in the experimental environment is performed, and GSNR of the optical transmission network is obtained.

The application provides a feature extraction method for abnormal data of a power optical transmission network and related equipment. The method sets monitoring indexes according to the data involved in the actual operation of the network element equipment of the power optical transmission network, so as to monitor the network element equipment according to the monitoring indexes. Then, the features of the abnormal data of each monitoring index are extracted from a large amount of monitoring data of the network element equipment, which is different from general network security features and accurately identifies the exclusive threats of the power optical transmission network. Meanwhile, in the process of extracting the features of the abnormal data, the time factor is introduced to capture the time evolution law and complex correlation of the abnormal data of each monitoring index, reduce redundant features, support dynamic monitoring of the network attack process, and thus provide accurate basis for real-time monitoring of the power optical transmission network and prevent the power optical transmission network from malfunctioning or being maliciously attacked.

The invention relates to the distribution of quantum-secure keys in an optical transport network (OTN) comprising at least three network nodes (N1 ... Nn) and an NxN Arrayed Waveguide Grating AWG, in which optical signals are transmitted end-to-end via transparent optical routing (TOR). Keys are generated and exchanged in pairs by the network nodes (N1 ... Nn) as shared quantum-secure keys according to a quantum key distribution method. This is achieved by establishing quantum channels between the nodes via the NxN AWG, which are tunable with respect to the optical wavelength of the quantum states transmitted via them. At least one network node (N1 ... Nn), acting as a Bob, receives quantum state photons (quantum state mediating photons) of different wavelengths, which are then transmitted by several network nodes (N1 ... Nn), acting as Alices, each generating quantum state photons with one of these wavelengths.Nn) are emitted and / or wherein quantum state photons of varying wavelength are generated by at least one network node (N1 ... Nn) acting as Alice and are transmitted to at least two network nodes (N1 ... Nn) acting as Bob, which differ in their receiving wavelength.

The invention discloses a capacity expansion system applied to a virtual cascade optical transport network private line. According to the system, an intelligent optical transmission platform device is provided with a local side self-adaptive wavelength optical module which is adaptive to a preset number of optical wavelengths; the intelligent optical transmission platform equipment is connected with an input interface of the local side multiplexer / demultiplexer, and an output interface of the local side multiplexer / demultiplexer is connected with the main optical cable cross connecting box through a single-core optical fiber; the main optical cable cross-connecting cabinet and the building optical cable cross-connecting cabinet are connected through a single-core optical fiber. The building optical cable cross-connecting box is connected with an input interface of a far-end wave combiner / splitter configured by a service general point through a single-core optical fiber, an output interface of the far-end wave combiner / splitter configured by the service general point is connected with a far-end self-adaptive wavelength optical module, and the far-end self-adaptive wavelength optical module is configured on client side equipment. According to the method, the problems that the special line capacity expansion construction period is long, the emergency demand of an enterprise for the special line bandwidth cannot be quickly responded, and network fluctuation and even service interruption are easily caused in the capacity expansion operation process are solved.

A system and a method for detecting a failure of an optical transport link (OTL) of an optical transport network (OTN) are provided, and a method for detecting a failure of an optical transport link (OTL) of an optical transport network (OTN) is provided. The method includes: receiving at least one multiplexed signal from the OTL, the at least one multiplexed signal having been generated by a multiplexing device from a first signal including a first set of optical channels and a second signal including a second set of signals; determining alternating current power and direct current power; determining a power ratio of the alternating current power to the direct current power; and determining a power ratio indicating a total number of optical channels in the first and second groups received at an output of the OTL at an optical power above a predetermined threshold.

The application discloses a cross-domain quantum key distribution method of an optical transport network, an OTN device and a system. The method comprises the following steps: sending cross-domain session key application information to a corresponding first quantum cryptography service platform; receiving session key information returned by the first quantum cryptography service platform, wherein the session key information comprises a working key KeyValue and a cross-platform key request field, the cross-platform key request field comprises a working key identifier KeyID, a key identifier key_tag and a cross-platform session key application value Keyblock; and delivering the cross-platform key request field to a peer OTN device through an overhead byte of an ODUk, so that the peer OTN device requests a corresponding second quantum cryptography service platform to acquire the working key KeyValue based on the cross-platform key request field. The application realizes cross-domain distribution of quantum keys of an OTN transmission network.

The purpose of the present invention is to manage new information necessary for path design when performing path design of an optical transmission network capable of handling multiple bands even in an environment in which a mixture of a plurality of types of optical fibers are present, and thereby increasing the scale and economic potential of the network.　To this end, disclosed herein is a transmission network management device for managing information necessary for path design when performing path design of a transmission network capable of handling multiple bands, the transmission network management device including: a physical topology information management unit that manages physical topology information used for estimating transmission quality in the path design; and a logical topology information management unit that is used for route design and wavelength design in the path design and manages logical topology information, including cost values indicating that it is easy or difficult to be selected from among a plurality of types of optical fibers of different wavelength bands, during the route design.

This embodiment discloses an optical transport network control method, apparatus, electronic device, and computer storage medium. The method includes: adding at least one OVPN permission table to the database of the DC, each OVPN permission table including an identifier of the OVPN, an account corresponding to the identifier of the OVPN, and an IP address corresponding to the identifier of the OVPN; upon receiving a first account login request from the DC, performing resource control on the OVPN according to the first account login request and the correspondence between the identifier and the account in the permission table; upon receiving a resource control request sent by the SC through the northbound interface, performing resource control on the OVPN according to the resource control request and the correspondence between the identifier and the IP address in the permission table.

The disclosure provides a clock transmission device, method and optical transport network equipment, and relates to the technical field of optical networks. The clock transmission device of the disclosure comprises: an ingress rate statistical module configured to statistically obtain the ingress rate of a data stream from a service source based on a local clock, and update the ingress rate at a predetermined first frequency; a cache module configured to cache data of the data stream and determine the amount of occupied cache space; a clock determination module configured to multiply the local crystal oscillator as a reference clock to obtain a multiplied clock; and an egress rate control module configured to read the data cached by the cache module, and output the cached data after bit-by-bit copying based on the multiplied clock, wherein the number of copying times is dynamically adjusted according to the ingress rate and the amount of occupied cache space.

The application provides a method, device and system for transmitting clock information, which can be applied to an optical transport network. The method comprises: generating first clock information, the first clock information being phase difference information or clock fault information, the first clock information being used for recovering a clock of a first data frame; mapping the first data frame carrying a plurality of first clock information to a second data frame; and transmitting the second data frame. The method for transmitting clock information provided by the application can reduce the bit error rate of the system and improve the transmission quality of the system.

The application provides a clock recovery method, device and system. The method can be applied to an optical transport network. The method comprises the following steps: receiving a first optical transport network (OTN) frame data stream, obtaining a service layer clock and phase difference information carried by a second OTN frame from the first OTN frame data stream, and then adjusting a reference clock of the second OTN frame according to the service layer clock and the phase difference information, wherein the reference clock of the second OTN frame is used for recovering a clock of the second OTN frame. The clock recovery method provided by the application can improve the accuracy of clock recovery of the OTN frame, thereby achieving the purpose of improving system performance.

The invention discloses an optical transport network planning method and system based on an improved Prim algorithm, and relates to the technical field of optical transport network planning, and the method comprises the steps: taking a plurality of cities of a to-be-constructed optical transport network as nodes, taking a communication transmission link between two cities as an edge, and obtaining the influence factor information of all nodes and the weight of all edges; calculating a link value of a network edge between the two nodes according to the influence factor information of all the nodes and the weights of all the edges; on the basis of the link values of all the edges, combining the link cost, adopting an improved Prim algorithm, searching the edge with the maximum link value-cost ratio through continuous loop iteration, and outputting a maximum spanning tree; and obtaining a planned optical transport network according to the edge set corresponding to the maximum spanning tree. According to the method, network value maximization and cost minimization planning of the optical transport network under the multi-constraint condition can be realized, and the problems that a traditional optical transport network planning optimization target is single, dynamic link value quantification is lacked, and dynamic service requirements are difficult to meet are solved.

This application provides an optical transport network service provisioning method, an electronic device, and a system. Applied to a server, the method includes: obtaining a target service type, a target port rate, and a target port signal type of an optical transport network service; and determining a target port of target customer-premises equipment (CPE) based on an association relationship among a service type, a port rate, a port signal type, and CPE, where the target port of the target CPE supports the target service type, the target port rate, and the target port signal type, and the target port of the target CPE is configured to establish an optical path of the optical transport network service. In the method, a device port corresponding to the optical transport network service does not need to be manually configured, so that service provisioning duration can be effectively shortened.