146 results about "Relay network" patented technology

The invention provides a disaster site satellite communication blind area image acquisition and transmission method of a low-altitude unmanned aerial vehicle relay. The method comprises the following steps: acquiring disaster area information and executing adaptive multi-modal image acquisition; establishing a low-altitude unmanned aerial vehicle relay network; performing feature extraction and semantic analysis on the marked image data set, generating non-uniform image fragments and calculating a transmission priority; and monitoring a communication environment state, and dynamically adjusting a transmission strategy through a dual-cycle feedback mechanism. According to the method, semantic integrity is ensured, transmission window perception is realized, parameter adjustment is stabilized through a double-loop feedback mechanism, and the problem of efficient transmission of the satellite communication blind area edge image in a disaster site is solved.

The invention belongs to the technical field of network security, and particularly relates to a network security protection system and method based on an electric power emergency communication environment, and the system comprises a quantum-classical hybrid encryption system which is used for generating a dynamic key in real time; the biological characteristic driven dynamic trust ring is used for equipment identity authentication; the unmanned aerial vehicle relay network protocol is used for data transmission; the secret key after-reading burn-down protocol is used for information secret key after-reading burn-down; a key output by the quantum-classical hybrid encryption system is used for authentication encryption of a biological characteristic driven dynamic trust ring, an unmanned aerial vehicle relay network protocol transmits data encrypted by the quantum key, and a key burn-down protocol is used for reading encrypted data to trigger a key burn-down mechanism. According to the method, the key security is improved, the network attack difficulty is increased, the communication delay in a disaster is reduced, man-in-the-middle capture and attack can be immunized, and the problem of contradiction between the encryption strength and the real-time performance is solved.

The invention discloses a secure communication method for eavesdropping a D2D relay NOMA network. The communication process has two time slots; in the first time slot, the information source equipment sends an NOMA signal, and the multi-antenna relay equipment selects one antenna to send an interference signal to resist eavesdropping attack; in the second time slot, the relay equipment adopts the digital network coding technology to mix the interference signal of the first time slot and the decoded information source message, then adopts the NOMA technology to construct a novel NOMA signal, and re-selects one antenna to send the NOMA signal, and meanwhile, the information source sends another interference signal to weaken the eavesdropper; the NOMA user equipment and the eavesdropper calculate a required signal-to-noise ratio and a required signal-to-interference-and-noise ratio, and calculate a system outage probability and an eavesdropping probability; according to the invention, the two NOMA users can realize physical layer security communication in the D2D network, and the security of the physical layer is far better than that of a security communication scheme based on non-cooperative interference and a traditional security communication scheme based on cooperative interference.

The invention relates to the technical field of agricultural intellectualization, and discloses a fruit tree growth monitoring system based on multi-sensor fusion, which comprises a multi-mode sensor array, an integrated soil humidity sensor, a three-dimensional ultrasonic ranging sensor, a hyperspectral imaging sensor and a microenvironment meteorological station, and realizes multi-parameter synchronous acquisition; a nonlinear data calibration model adopts a layered architecture, and cross interference between sensors is eliminated; a dynamic weight distribution algorithm is built in the edge computing node, multi-source heterogeneous data are fused in real time, a fruit tree growth situation map is generated, and a low-power-consumption processor is adopted to support lightweight AI model deployment; the self-adaptive power supply module adopts a photovoltaic-temperature difference composite power generation structure to realize cable-free deployment; the wireless ad hoc network communication unit constructs an inter-tree relay network based on a LoRa protocol, supports low-power-consumption remote data return, and integrates a relay node health degree evaluation mechanism. The real-time performance of fruit tree growth monitoring, the data reliability and the situation analysis accuracy are improved.

A system can execute a containerized application that comprises a microservice in a decentralized service mesh architecture, and a sidecar. The system can intercept, by the containerized application, a call from the microservice that is directed to a remote endpoint, and direct the call to the sidecar. The system can communicate, by the sidecar to an identity manager, service account credentials associated with the microservice, resulting in receiving an identity token associated with the microservice. The system can determine, by the sidecar, connectivity information of the remote endpoint based on a virtual address of the remote endpoint identified in the call. The system can communicate, by the sidecar to a token exchanger, the identity token and the connectivity information, resulting in receiving an access token and a network route to the remote endpoint. The system can relay, by the sidecar, network traffic between the microservice and the remote endpoint.

The invention provides a centralized quantum key relay network and a key distribution method, relates to the technical field of quantum communication, and comprises four steps of relay request initiation and demand analysis, path constraint and decision, cooperative key generation and verification, and monitoring and processing in a transmission process. Through the quantum digital signature, the quantum security MAC check code and the post quantum cryptography signature mechanism, the security of the system facing the quantum computing threat is greatly improved, and meanwhile, the dynamic path selection combining the aging level, the multi-factor dynamic scoring model and the elastic target time window is adopted; according to the method, the optimal path and the target time can be dynamically adjusted according to the timeliness requirement, the path condition and the network state of the request, the path selection is more flexible, different timeliness requirements are met, the integrity and legality of the secret key are ensured by adopting a three-level verification mode, and meanwhile, when the network has a fault, the safety of the network is ensured. A standby path can be automatically switched and a problem node can be isolated.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to receive a control message indicating a prioritization configuration for prioritizing wireless communications between one or more non-terrestrial relay nodes and one or more non-terrestrial network (NTN) nodes. The UE may be configured to communicate one or more messages based on the prioritization configuration and a quantity of non-terrestrial relay nodes corresponding to a location associated with the UE, a timing associated with the UE, or both.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a repeater network node may obtain a measurement gap configuration that indicates a measurement gap to be used by the repeater network node for performing a measurement. The repeater network node may receive a downlink signal from a transmitter network node. The repeater network node may transmit the downlink signal, to a user equipment (UE), based at least in part on the downlink signal being received during the measurement gap. Numerous other aspects are described.

The invention provides a centralized quantum key relay network and a key distribution method. A controller determines a target relay path and target time according to a relay request transmitted by a demand initiating node; and the controller extracts an XOR key with the same relay demand from the XOR keys matched with the target time in the M-2 key pools corresponding to the target relay path, performs bit-by-bit XOR to obtain a relay key, and sends the relay key to the demand initiating node and the demand destination node. The problems of different lengths, different generation times and different consumption conditions of the XOR keys received by the controller from different nodes are considered, an available key link is found in massive key storage, and the problem that in a certain time period, each two links on the link upload enough XOR keys is solved, so that the use efficiency of the XOR keys is improved. And a practical and feasible secret key using method is provided for a centralized relay network.

The invention relates to the field of unmanned aerial vehicles, in particular to a GIS-based unmanned aerial vehicle inspection network planning method and system, and the system comprises a GIS data processing module, a signal prediction module, a relay network generation module, a path planning module and a monitoring module. The GIS data processing module is used for loading and analyzing various data of an inspection area, the signal prediction module is used for predicting communication signal intensity distribution of unmanned aerial vehicles in the inspection area, the relay network generation module is used for obtaining a deployment scheme of relay unmanned aerial vehicles, and the path planning module is used for generating flight paths of the unmanned aerial vehicles. The monitoring module is used for monitoring the state of each unmanned aerial vehicle in real time. According to the scheme, by setting the signal strength prediction index, prediction of the signal strength of each part of the inspection area is facilitated, and setting of the network relay point location according to the signal strength index is facilitated, so that the stability of the signal sent by the unmanned aerial vehicle in the inspection process is ensured, and the reliability degree of unmanned aerial vehicle inspection is improved.

The invention belongs to the technical field of wireless communication networks, and particularly relates to a multi-device low-power-consumption rapid networking method based on a star flash technology. The method comprises the following steps: after a gateway sends out a network frame, a device to be networked calculates an optimal adding hierarchy through an innovative optimal adding hierarchy strategy according to the load of the device, the signal strength of the gateway and the remaining electric quantity of a battery; the gateway distributes an independent time window for each level in combination with a star flash technology asynchronous time slot distribution mechanism; the to-be-networked equipment completes network access in the time slot of the belonging hierarchy; the network access equipment forms a father-son relationship, and child nodes accurately calculate wake-up time to reduce air listening power consumption; all the devices adjust the relay duration in real time to reduce redundant relays; and when the network state suddenly changes, automatic reconstruction is performed to keep optimal. According to the invention, multi-device high-efficiency low-power-consumption networking can be realized.

The invention discloses a quantum key distribution system and method. According to the system, a phase coherence monitoring mechanism is innovatively introduced, and early attack detection is realized through a dynamic consensus sampling protocol; a zero-trust relay network is constructed by adopting a wavefront fragmentation principle, and trust dependence on relay nodes is eliminated; self-adaptive safety monitoring is realized based on a finite state automaton, and a system safety strategy is dynamically adjusted. According to the method, the problems of resource consumption type attack, relay trust dependence, static protocol limitation and the like faced by an existing QKD system are solved through a strict mathematical framework, and long-distance quantum key distribution with efficient resources, endogenous security and elasticity and physical layer security guarantee is realized. Experiments show that compared with a traditional scheme, the detection delay of the system is reduced by about 38%, the resource waste is reduced by about 40%, and the availability of the system reaches 99.995% or above.

The invention is suitable for the field of air transition transportation, and provides an air transition route dynamic optimization method and system, and the method comprises the steps: obtaining real-time hydrological monitoring data and historical tide model data, generating a dynamic golden navigation window, compressing an aqueduct shift interval in a window period, and adjusting the total amount; image recognition and reservation data are combined to generate a cross-shift vehicle ship-pooling combination, and an overwater vehicle-pooling network is constructed; and outputting a transportation scheme including temporary stop point optimization and connection path adjustment, triggering a sprint mode through a coupling mechanism of a tidal window and a ship-pooling demand, and constructing a vehicle path relay network during ebb tide to realize resource reuse. The system comprises a data processing module, a shift adjusting module, a ship-pooling combination generating module and the like. According to the scheme, the problems of low scheduling efficiency, resource waste and the like of a traditional fixed shift are solved, the dynamic adaptability and the resource utilization rate of steam transition transportation are improved, and the method is suitable for a steam transition route optimization scene influenced by tides.

The invention relates to an intelligent calculation center optical network optical path survivability-oriented air-ground cooperative unmanned aerial vehicle distributed optimization deployment method and system, and belongs to the technical field of optical communication network protection. The invention aims to solve the technical problems of long switching time delay, limited coverage and poor stability of a traditional single ground or air protection mechanism. According to the technical scheme, an air-ground cooperative protection architecture is constructed, and firstly, an integer linear programming model with the aim of minimizing the total cost of a system is established to carry out precise deployment optimization of unmanned aerial vehicle nodes; in order to improve the solving efficiency, a spectral clustering and K-means clustering-based heuristic algorithm is designed to realize rapid intelligent division of the unmanned aerial vehicle service domain; the deployed unmanned aerial vehicle cluster adopts a master-slave architecture and has a failover mechanism, and a temporary relay network can be quickly established when a ground optical path fails. According to the invention, the survivability and fault recovery efficiency of the optical network are effectively improved, and good balance between deployment cost and protection performance is realized.

The invention discloses a communication method and device, a readable storage medium and a computer program product, which are used for balancing network load and improving communication quality. In the application, a source network device sends first information to a first target network device. The first information is used for requesting switching of the terminal device from the source network device to the first target network device. The first information comprises indication information of the first resource. The first resource is used for the relay network device to transmit information associated with a handover process. Since the source network device configures resources for the relay network device, the resources are used for the relay network device to transmit information associated with the handover process. Therefore, the resources of the relay network device for transmitting the information associated with the terminal device can be dispersed and do not need to be excessively concentrated, so that the network load can be balanced, the peak value of the network load can be reduced, and the communication quality can be improved.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. There is disclosed a method of a first Remote UE in a sidelink relay network, the sidelink relay network comprising the first Remote UE, a Relay UE, and a second Remote UE, wherein the method comprises: determining a pair identifier (ID) identifying the first remote UE and a second remote UE at a sidelink relay adaptation protocol (SRAP) layer; and transmitting, to at least one of the second remote UE and a relay UE, the pair ID identifying the first remote UE and the second remote UE.

A method for wireless communication performed by a first relay node, includes receiving, from a donor network node, a relay network message indicating configuration information associated with a sidelink relay network. The method also includes transmitting, to one or both of the donor network node or one or more other relay nodes in the set of relay nodes, a queue report message indicating one or more channel characteristics and queue information. The method further includes receiving, from the donor network node, a resource allocation message indicating a group of resources, based at least in part on the queue report message, for communicating with the set of destination nodes. The method still further includes transmitting, to one or more destination nodes in the set of destination nodes via one or more respective sidelink channels, data via one or more resources of the group of resources.

The invention discloses a many-to-one relay selection method oriented to a distributed network, relates to the technical field of distributed network communication, studies the fairness optimization problem of a global transmission rate in a wireless network with limited relay nodes, considers the performance of source nodes of the whole network in a resource allocation process, and considers the overall performance of relays at the same time, thereby improving the resource allocation efficiency. Therefore, the average performance of the relay network is optimized, and the stable result of the whole network is realized. The method is characterized in that both a source node and a relay node have own decision-making capabilities, the source node selects a relay link for efficient transmission to meet own transmission rate requirements, and the relay node knows transmission rate information of the source node connected with the relay node and decides whether to accept a request of the source node or not according to a selection standard of the relay node. And the transmission rates of all source nodes are maximized by optimizing the relay selection strategy of the source nodes, so that the optimal relay distribution result of the whole network is realized.

The invention discloses a geographic information system and a data processing method, and the system comprises a geographic information fusion layer which carries out the plane geographic information collection, and carries out the three-dimensional space correlation based on an octree index; the electromagnetic environment modeling layer is used for simulating a signal propagation path by relying on an SBR / SPM ray tracing algorithm accelerated by CUDA, dynamically loading building material electromagnetic parameters by integrating a COST231 material library, correcting signal attenuation by accessing meteorological AP I and traffic flow data in real time, generating a dynamic signal intensity thermodynamic diagram and a probability confidence interval contour surface based on Monte Carlo simulation, and modeling the building material electromagnetic parameters according to the dynamic signal intensity thermodynamic diagram and the probability confidence interval contour surface. Carrying out coverage characterization; the relay network layer is used for constructing a virtual relay resource pool based on Kubernetes, training multi-agent relay control, predicting future traffic through an LSTM (Long Short Term Memory) model to trigger virtual relay activation, predictive load balancing and delay optimization; and the optimization engine layer performs concave polygon decomposition and 3D Boolean operation by using a CGAL library, constructs a building-relay hypergraph through a graph neural network, and outputs an optimal relay point set with stable time and space through the graph neural network.

A system comprises a wireless network comprising (1) first nodes that serve as a synthetic wide area base station for communicating data with a mobile handset and (2) second nodes that serve as a repeater network for propagating the data going to or from the synthetic wide area base station. The mobile handset includes multiple antennas that point in different directions. Different ones of the first nodes communicate the data to or from the mobile handset via wireless signals in accordance with the antennas' directionality. The wireless signals share the same frequency, encode the data, and are (1) respectively received by the different first nodes from different ones of the antennas or (2) respectively transmitted by the different first nodes for reception by different ones of the antennas. The nodes propagate the data via multiple paths through the wireless network as millimeter wave wireless signals that provide time-shifted representations of the data.

The embodiment of the invention discloses a block chain system testing method and device, equipment and a storage medium, and is applied to the block chain technology, and the method comprises the steps: obtaining a test case used for carrying out an asset transfer test on a block chain system, and a cross-chain bridge service source code of a cross-chain bridge relay network; detecting a position point where an original asset transfer logic in the cross-chain-bridge service source code is located, and injecting an abnormal asset transfer logic at the position point to obtain a cross-chain-bridge service test code; triggering a relay device in the cross-chain bridge relay network, and performing abnormal asset transfer between the first block chain network and the second block chain network according to the cross-chain bridge service test code and the test case to obtain an asset transfer result; and according to the asset transfer result, testing the interception performance of the block chain system for abnormal asset transfer. The test efficiency of the block chain system can be improved.

The present disclosure presents a method and system for determining a service network name (SNN) value for Proximity Service (ProSe) authentication. In a first embodiment, a remote user equipment (UE) and a home network determination of the remote UE use a fixed value SNN for ProSe authentication, such as' 5G: Prose '. Thus, a ProSe authentication vector may be generated regardless of which relay UE is discovered by a remote UE. In another embodiment, a remote UE may derive an SNN from cell information from a relay UE of a discovery procedure. In yet another embodiment, the relay UE sends the SNN of the relay network to the remote UE as part of the ProSe authentication procedure. This allows a security key to be generated for the PC5 communication based on the value of the SNN common at the network side and the UE side.

The invention belongs to the technical field of biosensing, and particularly relates to an implantable wireless passive chemical sensor system as well as a preparation method and application thereof. The sensor system comprises a miniature implantable sensor unit and a wearable relay coil network used for signal integration. Wherein the miniature implantable sensor unit adopts a three-module integrated framework, namely, the miniature implantable sensor unit comprises a chemical sensing module consisting of a miniature sensing electrode pair with potential response, a signal modulation module consisting of a variable capacitance diode pair which is connected back to back, and a wireless transmission module consisting of a spiral coil; the wearable relay network is a conductive coil network formed by embroidering a conductive wire or depositing and printing a conductive material on a flexible fabric substrate and patterning, and is used for realizing collaborative acquisition of chemical signals of multiple sensors; the system can synchronously monitor various biochemical indexes such as glucose, electrolyte, neurotransmitter and the like in body fluid and biological tissues in real time, and has important application value in the fields of wearable medical monitoring and implantable diagnosis.

An embodiment charging device includes a power factor correction circuit first to third switch legs connected to first to third inductors, respectively, a relay network for controlling connection between the first to third inductors and first to third input terminals according to a phase of a power grid connected to the first to third input terminals, a relay control circuit connected to the first to third input terminals for sensing one of the first to third input terminals to which a power source is connected and controlling the relay network based on a sensing result, and a relay filter circuit including first to third filter capacitors connected between a ground plane and first to third sensing lines connected to the relay control circuit for sensing voltages of the first to third input terminals and a fourth filter capacitor connected between the ground plane and a chassis.

The application discloses a kind of unmanned vehicle logistics directional relay network system and its coordination method, belong to intelligent logistics and unmanned vehicle application technical field, the system includes: multiple cellular airspace units, cellular airspace unit is constituted continuous grid in service area;Deployed in the center of each cellular airspace unit one micro hub, as the ground logistics node of corresponding unit;Wherein, each micro hub includes one terminal nest and at least two relay nests;Terminal nest is used to provide the storage and withdrawal interface of user goods;Each relay nest is arranged around terminal nest, and each relay nest is pre-allocated and fixedly responsible for the bidirectional goods transfer task between the unit where the micro hub is located and a particular adjacent unit;Terminal nest and each relay nest are connected by internal logistics transmission device 103.The application fundamentally simplifies scheduling and management complexity by deep coordination of cellular airspace grid, heterogeneous node division of labor, directional routing rules and high automation.

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 application provides a centralized quantum key relay network and key distribution method, relates to the technical field of quantum communication, and comprises four steps of relay request initiation and demand analysis, path constraint and decision, cooperative key generation and verification, and monitoring and processing in the transmission process.The application greatly improves the security of the system when facing quantum computing threats through quantum digital signature, quantum secure MAC check code and post-quantum cryptography signature mechanism, simultaneously adopts dynamic path selection combined with time limit level, a multi-factor dynamic scoring model and an elastic target time window, can dynamically adjust the optimal path and the target time according to the timeliness requirement of the request, the path condition and the network state, is more flexible in path selection, meets different timeliness requirements, and further adopts a three-level verification mode to ensure the integrity and legality of the key, and when a network fault occurs, can automatically switch to a standby path and isolate a problem node.

The invention belongs to the technical field of communication, and particularly relates to an interphone remote communication method and system, and the method comprises the steps: carrying out the framing processing of a collected original voice signal at a source end interphone, and generating a voice frame sequence with a fixed time length; performing forward error correction coding on each voice frame and adding a timestamp mark to form a coded voice packet with a time sequence identifier; injecting the coded voice packet into a multi-hop network formed by a plurality of relay nodes, and executing dynamic path selection and voice packet priority scheduling based on link state prediction at each relay node; according to the system, forward error correction coding voice frames with timestamps are introduced at a source end, dynamic path selection based on link state prediction and voice frame priority preemptive scheduling are implemented in a relay network, and a multi-path redundancy receiving and missing frame interpolation reconstruction mechanism based on linear predictive coding are adopted at a destination end. And transmission time delay and jitter accumulated in the multi-hop forwarding process are effectively eliminated.

The application discloses an indoor inspection signal enhancement system based on a multi-unmanned aerial vehicle dynamic relay network, comprising: an inspection path planning module, which is used for determining a planned inspection path of an unmanned aerial vehicle and calculating an equivalent communication path length; a relay demand prediction module, which is used for determining the number of relay unmanned aerial vehicles required by an inspection task; a multi-hop relay link construction module, which is used for generating relay deployment control instruction parameters according to the number of relay unmanned aerial vehicles and building structure data; a relay position adjustment module, which is used for periodically collecting link quality indicators and adjusting the hovering position of the relay unmanned aerial vehicle; a data forwarding path selection module, which is used for selecting a neighbor node for next-hop forwarding of the relay unmanned aerial vehicle; and a relay stable regulation and control module, which is used for route reconstruction, standby relay intervention and relay deployment correction. The application effectively improves the reliability, network stability and system robustness of indoor inspection communication, reduces the demand for manual intervention, and enhances the engineering practicability of the multi-unmanned aerial vehicle indoor inspection system.