48 results about "Wavelength allocation" patented technology

The invention provides a financial data analysis, identification and acquisition method and system. According to the method, firstly, a financial evolution graph is constructed based on cross-cycle financial revenue and expenditure data, multi-source heterogeneous financial data are integrated in real time through an optical interconnection storage device, time-space correlation characteristics are synchronously written in through a dynamic wavelength allocation protocol, and optical interconnection enhanced dynamic graph nodes are generated. A deviation early warning feature vector is generated by combining capital flow entropy change of an atlas node, after an atlas topology reconstruction rule is triggered, cross-department data consistency is verified through polarization state coding of an optical interconnection device, and policy effect lag parameters are extracted. And finally, correcting the weight of the atlas node based on a dynamic prediction mechanism, and outputting a cross-department financial traceability report. According to the technical scheme provided by the invention, through optical interconnection enhanced dynamic atlas and cross-department data fusion, the financial resource configuration abnormity monitoring capability is improved, and accurate traceability of a policy lag effect and a fund chain fracture risk is realized.

The invention provides a dynamic wavelength allocation method based on DCI wavelength division II type equipment. The method comprises the following steps: acquiring an occupation state and a transmission quality index of each wavelength channel of a current network; establishing a wavelength channel quality evaluation model, and scoring each wavelength channel according to the transmission quality index of each wavelength channel of the network; according to the bandwidth requirement, the priority and the QoS requirement of the service request, generating a traffic characteristic matrix containing the delay sensitivity and the bandwidth requirement through a traffic prediction algorithm; based on a network state and the traffic characteristic matrix, through resource availability calculation and path quality evaluation, forming an allocable wavelength resource pool and a quality score thereof; for the allocatable wavelength resource pool, generating an optimal wavelength allocation scheme by adopting an improved heuristic algorithm and comprehensively considering the resource utilization rate, the signal quality and the service priority; and according to the performance feedback of the optimal wavelength allocation result and the network state change, continuous optimization of wavelength allocation is realized through a self-adaptive adjustment mechanism. The method can effectively deal with the dynamic flow change in the DCI network, improve the resource utilization rate, ensure the signal quality and meet the QoS requirement of the service, thereby providing an efficient and reliable wavelength allocation solution for the data center interconnection network.

The invention provides an optical communication flow dynamic wavelength allocation optimization method and system, computer equipment and a storage medium, flow monitoring modules are arranged at nodes of an optical communication network, flow data of different service types at the nodes are acquired, a central control unit acquires existing wavelength resource information in the optical communication network, and the optimal wavelength allocation of the optical communication flow is realized. Evaluating whether the current wavelength resource allocation is reasonable; the central control unit sends the generated dynamic wavelength allocation mechanism to each node of the optical communication network, and each node adjusts the existing wavelength allocation through the received mechanism; and continuing to collect data of different services at each node, transmitting the collected data to the central control unit for evaluation, and if the preset target is not reached, executing the above steps again. The method has the advantages of balancing the resource distribution of the whole network, avoiding local congestion, improving the overall resource utilization rate, remarkably reducing the problems of packet loss rate and delay exceeding caused by signal crosstalk, reducing the probability of fragment generation in the future and avoiding single-point congestion.

The invention relates to the technical field of optical cable fault diagnosis, in particular to an intelligent diagnosis and maintenance system for an electric power communication optical cable. Comprising an optical cable monitoring module; a data processing module; the fault positioning module is used for positioning an optical cable fault position based on the data of the optical cable monitoring module and the physical structure and layout information of the optical cable, extracting fault features by comparing monitoring data changes before and after the fault, and identifying a fault type according to an optical cable performance evaluation model; and the maintenance strategy generation module is used for generating an optimal maintenance strategy according to the fault positioning result and the real-time state of the optical cable, and dynamically adjusting transmission power, wavelength allocation and a coding mode according to the performance change of the optical cable. According to the intelligent diagnosis and maintenance system for the electric power communication optical cable, the optical cable is monitored in real time, the transmission burden is reduced, the maintenance cost is reduced, the abnormal state and potential faults of the optical cable are intelligently diagnosed, and the stability of data transmission is ensured.

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.

A wavelength cross-connect device is formed by connecting a plurality of wavelength cross-connect devices in a ring-like form with WDM networks for each band of a plurality of bands on the input / output sides of the wavelength cross-connect devices, and includes a link wavelength allocation control unit. The link wavelength allocation control unit performs control to set different optical paths through which optical signals of the same wavelength are transmitted in the same zone between wavelength cross-connect devices, in the WDM networks of different bands in the same zone.

The invention discloses a master-slave ONU interconnection optical transceiver module for FTTR and a control method. The control method comprises the following steps: an optical parameter acquisition module acquires a link type and a transmission quality parameter; the optical power control module generates a dynamic adjustment strategy in combination with the cloud reference value and the actually measured parameters; the wavelength allocation module generates a wavelength resource strategy, and triggers protection switching and interference suppression when optical power fluctuation exceeds a threshold value; the optical transceiving execution module executes transmission, and a cruise protection mode is started when the optical monitoring module detects quality degradation; and when the interference is lower than a threshold value, relieving protection and recovering a strategy, and completing stable link establishment. The device comprises an optical parameter acquisition module, an optical power control module and the like which cooperatively realize parameter acquisition, strategy generation and execution control. The optical power and wavelength resources can be finely regulated and controlled according to different scenes, the interconnection stability of the master ONU and the slave ONU is improved, the anti-interference and self-healing efficiency in a complex environment is remarkably superior to that of a traditional scheme, and the method is suitable for FTTR networking scenes of families, enterprises and the like.

The invention discloses an automatic remote control method and system for a port machine, and relates to the technical field of automation, and the method comprises the steps: front-end processing equipment is connected with a lifting appliance positioning sensor and a motor driver, generates an equipment topological graph, is connected with a plurality of port machine PLC networks through a Profibus-DP coupler, and outputs a network state report; meanwhile, a dual-redundancy operation platform interface is configured and a state identification signal is output; based on the state identification signal, constructing an all-optical link and generating an optical fiber path topology, performing layered transmission on a lifting appliance control instruction and a path instruction, establishing a heartbeat detection mechanism and triggering a state confirmation signal; receiving a state confirmation signal and the wavelength allocation table, and acquiring laser radar point cloud data through a dedicated channel to execute lifting appliance obstacle avoidance correction; and based on the operation control authority and the new optimal path sequence, constructing a digital twin, and generating a scheduling report through an LSTM model. According to the method, the special channel and the shared channel are constructed, so that instruction blocking is eliminated.

The invention relates to an optical fiber wavelength division multiplexing transmission method and system with adjustable coherent light wavelength, and relates to the field of wavelength transmission, each coherent light communication device collects service characteristic parameters, identifies service types and reports wavelength application requirements, and a network controller plans and generates an allocation scheme in combination with the whole network wavelength resource state. The method solves the problems that wavelength allocation and management are lack of flexibility and intelligence, are difficult to quickly adapt to network changes, service requirement adjustment and fault recovery, and are difficult to realize data transmission. The invention solves the technical problems of low transmission efficiency and influence on network stability and reliability caused by the fact that the existing optical fiber wavelength division multiplexing system is low in transmission efficiency, effectively improves the flexibility and intelligence of wavelength distribution, can dynamically adapt to network change and service requirements, ensures efficient and stable data transmission, and improves the overall performance and reliability of the optical fiber wavelength division multiplexing system.

The present application relates to the technical field of passive optical network bandwidth allocation, in particular to a passive optical network bandwidth and wavelength allocation method and system with a dedicated activation wavelength, which introduces an additional dedicated activation wavelength on the basis of a traditional working wavelength, and allocates the bandwidth of the working wavelength and the activation wavelength to the optical network unit in coordination, effectively alleviating the bandwidth pressure of the working wavelength, optimizing the data transmission efficiency and bandwidth utilization, and further improving the overall performance of the network. At the same time, by generating and broadcasting a bandwidth allocation mapping, it ensures that each optical network unit can accurately obtain the bandwidth allocation result and efficiently send service request data on the allocated wavelength. This dual-wavelength cooperative working mechanism not only enhances the flexibility and scalability of the network, but also provides users with more stable and efficient data transmission services.

The invention relates to the technical field of wide area networks, and discloses a cross-domain distributed machine learning-oriented adaptive parameter synchronous scheduling method in an optical wide area network, which comprises the following steps of: firstly, calculating two-hop bandwidths of each node, then sorting according to the sizes of the two-hop bandwidths, respectively selecting the first m nodes as aggregation nodes, respectively establishing mathematical models, the method comprises the following steps of: firstly, respectively calculating corresponding GMSTs according to relaxation and deterministic rounding thoughts, then comparing the GMSTs under different m conditions, finally selecting m nodes with the minimum GMST as aggregation nodes, and obtaining corresponding path, rate and link wavelength allocation strategies. According to the method, reconfigurability of network topology of the wide area network and rapidness and simplicity of parameter aggregation operation are considered at the same time, the number and positions of aggregation nodes can be adaptively selected according to network information and training task information, and wavelength allocation of optical fibers in the network is decided at the same time.

The application discloses a kind of based on optical communication's multiple RGV things association method and system, the present application relates to the field of multiple equipment collaborative control and optical communication technology in industrial automation logistics system, including the following steps: S1: by the multiaxis adjustable light transceiver module of each RGV carrying real-time acquisition position, motion state and environmental barrier information, generate dynamic light relay priority weight.The multiple RGV things association method and system based on optical communication, through the deep integration of dynamic light relay network and adaptive wavelength allocation technology, significantly improve the communication stability and collaborative efficiency of multiple RGV in complex industrial scene;Based on the node selection mechanism of dynamic light relay priority weight, combined with the mixed integer programming model of elastic channel, realizes the uninterrupted transmission and efficient channel multiplexing of optical communication link in mobile shielding scene.

The embodiment of the invention provides a vehicle-mounted communication method, device and system and a storage medium, and relates to the technical field of communication. The method comprises the following steps: allocating a wavelength channel for each sensor through a dynamic wavelength allocation controller according to the type and communication load of the sensor; according to the wavelength channel allocated to each sensor, generating an optical signal of a corresponding wavelength through a temperature control distributed feedback laser, and modulating data of each sensor to the optical signal of the corresponding wavelength; the modulated optical signals with different wavelengths are input into an array waveguide grating multiplexer to be multiplexed into single-path optical signals, and demultiplexing is carried out through an array waveguide grating demultiplexer to generate data of each sensor; the communication load of each sensor is fed back to the dynamic wavelength allocation controller. According to the method, based on the types of the sensors and the communication loads, wavelength channels are dynamically allocated to different sensors, the time delay of multiplexing and demultiplexing is reduced, and therefore the real-time performance and reliability of vehicle-mounted communication are improved.

The invention discloses a multi-service broadcast light receiving scheduling method and system based on wavelength allocation, and relates to the technical field of optical network communication, and the method comprises the steps: carrying out the combined modeling of the type, time limit and data scale constraint of a service request, a wavelength resource occupation state and an interference risk for a broadcast type WDM multi-service concurrent receiving scene, and obtaining a multi-service broadcast light receiving scheduling model; the method comprises the following steps: dynamically grouping available wavelengths based on service category load prediction to realize a self-adaptive resource boundary according to service attributes; and constructing a comprehensive priority index containing the latest receiving time limit, the service category and the candidate wavelength interference risk, executing ordered cross priority scheduling, arranging a receiving time slot on a target wavelength to generate a wavelength scheduling table and a receiving scheduling table, and finally driving a receiver to tune and receive according to the time slot by using a scheduling instruction. Therefore, while the wavelength utilization rate is improved, the receiving conflict and the delay jitter are reduced, and the key service guarantee is enhanced.

The application discloses a kind of port machine automation remote control method and system, it is related to automation technical field, including front end processing equipment connection spreader positioning sensor and motor driver, generates equipment topology diagram, interconnects multiple port machine PLC networks by Profibus-DP coupler and exports network status report, while configuring double redundancy operation platform interface and exports state identification signal;Based on state identification signal, construct all-optical link and generate optical fiber path topology, hierarchical transmission of spreader control instruction and path instruction is established, heartbeat detection mechanism is established and state confirmation signal is triggered;Receive state confirmation signal and wavelength allocation table, obtain laser radar point cloud data by special channel to execute spreader obstacle avoidance correction;Based on operation control authority and new optimal path sequence, construct digital twin, generate scheduling report by LSTM model.The application eliminates instruction blockage by constructing special channel and shared channel.

The present application relates to the technical field of failure prediction, in particular to a kind of optical fiber network resource failure prediction method, comprising the following steps: obtaining optical network optical cross-connect request arrival rate and wavelength allocation signaling processing time, enter controller system state space matrix, generate block tri-diagonal transition rate array, the block tri-diagonal transition rate array is iteratively solved, and signaling state steady-state probability vector is generated.In the present application, the bar code length shortening rate under continuous time window continues to enter the paralysis risk quantitative set together with the buffer overrun probability evaluation value, both retain the topology contraction trend, and also retain the signaling backlog degree, the output network resource failure warning signal thus has time sequence, structure and service pressure, short-term disturbance and sustained instability can be distinguished when failure has not yet been apparent, and the early warning advance and risk positioning accuracy are improved.

The invention relates to the technical field of wireless networks, and particularly provides a wavelength management method, device and equipment, a medium and a product. The method comprises the following steps: determining at least one candidate wavelength group based on performance parameters of candidate wavelengths; based on the transmission distance of each far-end node, distributing a corresponding first wavelength group to each far-end node from the at least one candidate wavelength group; and carrying out wavelength allocation based on the flow load of each remote node and the corresponding first wavelength group to obtain a target wavelength corresponding to each remote node. Reasonable wavelengths can be allocated to the far-end nodes through wavelength grouping, and resource waste caused by performance difference between different wavelengths is avoided. Moreover, according to the flow load conditions of different remote nodes, the wavelength resources can be allocated more reasonably, and the problem of unreasonable wavelength allocation caused by a single influence factor is avoided. Therefore, the efficiency of wavelength management can be improved.

The invention relates to a cross-layer optical network routing optimization method assisted by a large language model. The method comprises the following steps: constructing a framework of a cross-layer optical network, and collecting network physical node composition, link resource parameters and service request characteristics; designing an auxiliary graph model, and converting a cross-layer network routing optimization problem into a minimum cost path calculation problem in a virtual topology; building an auxiliary graph model weight optimization framework endowed by the large language model, and preliminarily generating an edge weight of the auxiliary graph model by the large language model; calculating a minimum cost path based on the edge weight of the initial auxiliary graph, evaluating a network performance index corresponding to the path, inputting an evaluation result as feedback data into the large language model, and iteratively adjusting the edge weight until the performance index is converged to be optimal; and completing routing planning and wavelength allocation of all service requests in the auxiliary graph model according to the optimal edge weight. According to the method, a large language model and an auxiliary graph model framework are combined, so that the flexibility and the multi-target adaptation capability of routing optimization are improved, and global optimization is realized.

This invention relates to the field of fault prediction technology, specifically to a method for predicting optical fiber network resource faults. The method includes the following steps: obtaining the arrival rate of optical cross-connection requests and the wavelength allocation signaling processing time of the optical network; substituting these into the controller system state space matrix to generate a block tridiagonal transfer rate array; iteratively solving the block tridiagonal transfer rate array to generate a signaling state steady-state probability vector. In this invention, the barcode length shortening rate under continuous time windows continues to be included in the paralysis risk quantification set along with the buffer over-limit probability assessment value. This preserves both the topology contraction trend and the signaling backlog, thus the output network resource fault early warning signal possesses both temporality, structural characteristics, and service stress resistance. It can distinguish between short-term disturbances and sustained instability before the fault manifests, improving the early warning lead time and risk location accuracy.

The invention discloses a multi-RGV Internet of Things method and system based on optical communication, and relates to the technical field of multi-device cooperative control and optical communication in an industrial automation logistics system, and the method comprises the following steps: S1, collecting the position, motion state and environment obstacle information in real time through a multidirectional tunable optical transceiver module carried by each RGV, and generating a dynamic optical relay priority weight. According to the multi-RGV Internet-of-things method and system based on optical communication, through deep fusion of a dynamic optical relay network and an adaptive wavelength allocation technology, the communication stability and cooperation efficiency of multiple RGVs in a complex industrial scene are significantly improved; based on a node selection mechanism of a dynamic optical relay priority weight, in combination with a mixed integer programming model of an elastic channel, uninterrupted transmission and efficient channel multiplexing of an optical communication link in a mobile shielding scene are realized.

This patent discloses a resource allocation method based on link influence in a dual-protocol quantum optical network. This method is mainly aimed at the application scenario of a dual-protocol QKD optical network based on BB84 and SNS, and solves the resource competition problem between the two quantum key distribution services and data communication services. This method fully considers the characteristics of the two protocols, and proposes an SNS wavelength allocation method based on link influence and a fiber core allocation method for reserved quantum cores, which can effectively improve the QKD performance in the network. The method proposed by the present invention helps to promote the development of quantum key distribution optical networks in which multiple protocols coexist, laying the foundation for their widespread application.

The application provides a fiscal data analysis and identification acquisition method and system. Wherein, the method first constructs a fiscal evolution graph based on cross-period fiscal revenue and expenditure data, integrates multi-source heterogeneous fiscal data in real time through an optical interconnection storage device, uses a dynamic wavelength allocation protocol to synchronously write space-time correlation characteristics, and generates an optical interconnection enhanced dynamic graph node. In combination with the change of the fund flow entropy value of the graph node, a deviation early warning characteristic vector is generated, after triggering the graph topology reconstruction rule, the consistency of cross-department data is verified through the polarization state coding of the optical interconnection device, and the policy effect lag parameter is extracted. Finally, based on the dynamic prediction mechanism, the graph node weight is corrected, and the cross-department fiscal tracing report is output. The technical scheme provided by the application fuses the optical interconnection enhanced dynamic graph and cross-department data, improves the abnormal monitoring capability of fiscal resource allocation, and realizes the accurate tracing of policy lag effect and fund chain fracture risk.

The utility model relates to optical communication technical field, more specifically, the utility model relates to a kind of high-isolation narrow-band wave division assembly, comprising: optical glass, one end in its first direction is equipped with first filter sheet, and the other end has the reflecting surface corresponding with the first filter sheet;First filter unit and second filter unit are respectively arranged in the two ends of the optical glass second direction, the first filter unit is located on the reflected light optical path of the reflecting surface, and a plurality of light outlets are equally spaced along the first direction on the first filter unit and second filter unit.The utility model provides a kind of high-isolation narrow-band wave division assembly, realizes narrow-band wave division, high-isolation and low loss, to support more flexible wavelength allocation and network upgrade.

The invention provides a routing and wavelength allocation method based on an optical network and related equipment. The method comprises the following steps: acquiring a source node, a destination node, an earliest starting time, a latest starting time and a request duration; determining a shortest path set based on the source node and the destination node; determining a candidate path set in the shortest path set based on the earliest starting time, the latest starting time and the request duration; determining a renewable energy source proportion of each path in the candidate path set based on a pre-constructed renewable energy source proportion model; based on the renewable energy source proportion of each path in the candidate path set, a solution is determined, and the solution comprises a target path, a target wavelength and a target starting time period. The utilization rate of green energy is improved, and the service energy consumption is reduced.

The invention relates to the technical field of optical communication, and discloses an optical amplifier with a large gain bandwidth, the optical amplifier comprises a first wavelength beam splitting assembly, a gain chip set and a second wavelength beam splitting assembly, input light is divided into a first transmission light path and a second transmission light path through the first wavelength beam splitting assembly, and after being amplified by the gain chip set, the input light is transmitted to the second transmission light path through the second wavelength beam splitting assembly. The first transmission light path and the second transmission light path are recombined into one light beam to be output through a second wavelength beam splitting assembly; according to the light amplification method, a wavelength beam splitting assembly is adopted to distribute an incident light signal to a proper gain medium according to the wavelength, and light in a transmission light path is amplified through the gain medium. According to the optical amplifier, the light in a large wavelength range is distributed to the multiple gain media to be amplified respectively, the gain balance of the optical amplifier in the large wavelength range is improved, the amplified light is adjusted into one beam of output light through the wavelength beam splitting assembly again, and the light amplification effect is effectively improved.

The invention belongs to the field of quantum key distribution networks, and discloses a quantum channel wavelength allocation method adaptive to a tidal effect and a related device, and the method comprises the steps: predicting the classical traffic demand of a next time window through constructing a PON service traffic model, and calculating the number of needed wavelengths; judging whether the requirement is met or not according to the current wavelength distribution state: if not, preferentially recovering wavelength resources of a low-frequency quantum channel for classical signal transmission, and if yes, preferentially distributing idle high-frequency wavelength to the quantum signal, and meanwhile, completing key distribution by using the quantum channel to supplement a key pool; and finally, updating the network load state to realize loop optimization. By adopting the method, tidal flow fluctuation can be effectively adapted, resource competition in peak periods can be reduced, classic service congestion and service quality reduction can be avoided, the channel utilization rate in valley periods can be optimized, and efficient coordination of quantum secret communication and classic service transmission can be realized.

The invention discloses a multi-frequency radio frequency optical return method and system based on DWDM dynamic wavelength mapping, and relates to the technical field of optical carrier multiplexing, and the method comprises the steps: digitalizing a plurality of radio frequency signals of different frequency bands, carrying out orthogonal mapping processing based on a preset orthogonal vector group, converting the signals of each frequency band into vectorized sub-signals which are orthogonal to each other, and transmitting the vectorized sub-signals to a DWDM; forming a composite baseband signal; according to real-time link crosstalk intensity and optical power constraint, a suitable DWDM transmission wavelength is dynamically selected so as to optimize signal transmission performance and reduce crosstalk; pre-distortion compensation is carried out on the composite baseband signal through a nonlinear model of an optical fiber link, and nonlinear distortion in the optical fiber transmission process is counteracted; and performing optical domain modulation on the pre-compensation signal on a dynamically determined wavelength, and coupling the signal to a single optical fiber link through a DWDM optical multiplexer for transmission. Through dynamic wavelength distribution and nonlinear compensation, the multi-frequency signal transmission performance is improved, and the capacity and stability of an optical fiber system are optimized.

This application discloses a multi-frequency radio frequency optical backhaul method and system based on DWDM dynamic wavelength mapping, relating to the field of optical carrier multiplexing technology. The method includes: digitizing multiple radio frequency signals of different frequency bands and performing orthogonal mapping processing based on a preset orthogonal vector group to convert each frequency band signal into mutually orthogonal vectorized sub-signals, forming a composite baseband signal; dynamically selecting a suitable DWDM transmission wavelength according to real-time link crosstalk strength and optical power constraints to optimize signal transmission performance and reduce crosstalk; performing pre-distortion compensation on the composite baseband signal using a nonlinear model of the optical fiber link to offset nonlinear distortion during optical fiber transmission; optically modulating the pre-compensated signal at a dynamically determined wavelength and coupling the signal to a single optical fiber link for transmission using a DWDM optical multiplexer. Through dynamic wavelength allocation and nonlinear compensation, the multi-frequency signal transmission performance is improved, and the capacity and stability of the optical fiber system are optimized.

The invention provides a parallel broadcast communication method of a Mesh structure wavelength division multiplexing on-chip optical network, which comprises the following steps of: firstly, dividing an n * m mesh structure into four blocks, including two row blocks, nodes of which communicate in rows, and each row being a linear array with (or) nodes; there are two column blocks whose nodes communicate in columns, each column being a linear array with (or) nodes. Then, carrying out parallel communication on each row or column linear array in the block by adopting a bit algorithm; the bit algorithm comprises the following steps: firstly, carrying out lambda + 1 system coding on nodes in a linear array, wherein lambda is an available wavelength number; then multiple rounds of communication are carried out according to the coded bits in sequence, a target node set corresponding to the source node is determined according to values on the coded bits in each round of communication, and wavelengths are distributed according to the values on the coded bits; and finally, carrying out conflict-free parallel communication according to the formulated path and wavelength allocation rule.