344 results about "Access technology" patented technology

The invention discloses an Internet of Things operation management scheduling system based on cloud edge collaboration, relates to the technical field of task scheduling optimization, and aims to solve the problem of adaptability of edge computing and cloud edge collaboration architecture, the Internet of Things perception access technology is adapted and fused with heterogeneous equipment through an architecture adaptation module, various IOT data are stably acquired, and the cloud edge collaboration is realized. The task execution position is dynamically adjusted in combination with the task distribution unit; real-time stream calculation and an ETL processing mechanism are combined to fit a comprehensive scheduling index Zdzh, the utilization rate of calculation resources is increased, and task scheduling is optimized; internet of Things equipment data, internet data and government affair data are analyzed based on the data lake and warehouse architecture, a data access strategy is optimized, and the data fusion efficiency is improved; and calculating and evaluating a sudden anomaly prediction coefficient Tycs, triggering an anomaly early warning mechanism or a sudden anomaly emergency mechanism, optimizing task migration, calculating node load balancing and data traceability analysis, so as to improve the stability and intelligent level of an Internet of Things operation management scheduling system.

The invention provides a multi-scene access control dynamic verification method and system based on a permission tree, and relates to the technical field of scene access, and the method comprises the steps: receiving a user resource access request, obtaining a user permission tree, obtaining a mapping rule according to a scene identifier, screening to generate a primary screening permission node set, carrying out the grouping processing through employing a consistent Hash algorithm, and obtaining a primary screening permission node set; and generating a scenarized permission tree through reachability analysis, merging and reconstruction, performing hierarchical verification on identity validity, scene legality and resource access permission on the request, and generating an access control strategy. The method can dynamically adapt to authority requirements of different scenes, and the accuracy and flexibility of resource access control are improved.

The invention provides an AmBC-NOMA communication resource joint optimization method for a high mobility V2X scene, and relates to the technical field of communication resource joint optimization. Aiming at channel dynamic change caused by high-speed motion of a vehicle and the influence of the channel dynamic change on short packet communication reliability and rate performance, the method combines reflection type communication and non-orthogonal multiple access technologies, and on the basis of fully considering channel time-varying characteristics, a reflection coefficient, a power distribution coefficient and block length resource distribution in a system are jointly optimized, so that the reliability and the rate performance of short packet communication are improved. Therefore, the communication rate performance and the resource utilization efficiency under the requirements of short time delay and low error rate are improved. Through the method, the short packet transmission rate of the system can be remarkably improved under the conditions of limited time delay and channel uncertainty, and the actual application requirements of the future Internet of Vehicles system for efficient, low-time-delay and high-reliability short packet communication are met.

Various aspects of the present disclosure relate to a UE that is connected to a visited network requests a network service from the visited network. The service request is rejected, and the UE and the visited network communicate rejection reports for the service rejection to the home network of the UE. Further, the home network considers received service rejection information from the UE and / or the visited network to provide configuration of preferred visited network and / or access technology combinations to the UE.

Provided in the present application are a power load regulation and control system and method based on a high-speed wireless transmission network. The power load regulation and control system comprises a regulation and control resource layer, an aggregation transmission layer and a load terminal layer, wherein the load terminal layer is connected to each terminal device, and is used for collecting information of each terminal device and fusing the information of the terminal devices, and also issuing a control instruction to each terminal device or transmitting fused information to the aggregation transmission layer; the aggregation transmission layer is used for transmitting the fused information to the regulation and control resource layer by using multi-service multi-hop access technology and secure transmission technology, and transmitting to the load terminal layer the control instruction issued by the regulation and control resource layer; and the regulation and control resource layer is used for generating the control instruction for each terminal device on the basis of the fused information, and transmitting the control instruction to the aggregation transmission layer. The present application can realize the unification of a stable connection and a high transmission rate, can also meet the high requirements for data collection and the transmission rate, and can also cope with complex and variable channel transmission scenarios.

The invention discloses a multi-target CRB minimization method based on near-field flux and inductance integration of rate splitting, and relates to the technical field of wireless communication and novel multiple access. The method comprises the following four steps: S1, establishing a near-field communication channel and a near-field sensing channel according to a spherical wave propagation model; s2, the base station encodes information required by a communication user into public and private information streams by using a rate splitting multiple access technology and sends the public and private information streams to the user side; s3, according to the array response vector of the near-field sensing channel, deriving CRBs for simultaneously estimating angles and distances of a plurality of sensing targets; and S4, establishing an optimization problem by satisfying the communication rate requirement and minimizing the CRB of multiple targets, and jointly optimizing the hybrid beam forming matrix and the common rate allocation variable by using a penalty dual decomposition and block coordinate descent method. The method can achieve the simultaneous estimation of the distances and angles of a plurality of sensing targets, and effectively reduces the estimation error.

The invention relates to an unmanned aerial vehicle cluster autonomous crossing method and system. The method comprises the following steps: expanding channel capacity, carrying out time delay analysis, and introducing a non-orthogonal multiple access technology to carry out interference management and resource allocation so as to complete network deployment; establishing a linear state space model of a multi-unmanned aerial vehicle system for the unmanned aerial vehicle cluster, setting a cooperative control strategy and an obstacle avoidance strategy, and performing model performance analysis; acquiring environment information through each sensor arranged on each unmanned aerial vehicle in the unmanned aerial vehicle cluster to obtain an environment state; an artificial potential field method is adopted to complete a dynamic obstacle avoidance algorithm according to environment state design, and the path of the unmanned aerial vehicle is adjusted in real time according to the dynamic obstacle avoidance algorithm; establishing an unmanned aerial vehicle kinematic model, designing an optimization algorithm of path planning based on the unmanned aerial vehicle kinematic model, and performing real-time dynamic path adjustment according to the optimization algorithm; setting a security and fault-tolerant mechanism; and autonomous crossing of the unmanned aerial vehicle cluster is realized. And the high-efficiency collaboration and stability of the unmanned aerial vehicle cluster are improved.

The embodiment of the invention provides an air-sea cross-domain communication method and device. The method comprises the following steps: fusing a multi-system communication protocol into a cross-domain communication network protocol through a water surface wireless communication multi-band access technology, and carrying out adaptive networking; the method comprises the following steps: performing dictionary table mapping on original information sent by underwater subsurface buoy sensor equipment to obtain a translated character sequence, constructing a Huffman tree according to the occurrence frequency of each character in the translated character sequence, and generating a Huffman code corresponding to each character according to the Huffman tree; the method comprises the following steps: monitoring channel noise and a channel error rate of an underwater acoustic channel in real time, determining a real-time channel state, determining a channel coding parameter adjustment strategy matched with the real-time channel state through an adaptive algorithm, and dynamically adjusting a coding mode and coding parameters of the channel according to the channel coding parameter adjustment strategy. Uploading the Huffman code to a superior command center through a preset dual channel according to the dynamically adjusted coding mode and coding parameters; according to the invention, the air-sea cross-domain communication efficiency can be effectively improved.

A ground station determines a location of a user equipment (UE) by triangulating signals from a single satellite at different times and positions as it orbits the earth. The ground station processing device determines a first pathlength between the UE and the satellite when the satellite is at a first position, and a second pathlength between the UE and the satellite when the satellite is at a second position. The ground station processing device triangulates an actual position of the UE based on the first pathlength and the second pathlength.

The embodiment of the invention provides a measurement and control link multiple access method and device based on a high-dimensional discrete space, electronic equipment and a storage medium. The method comprises the following steps: constructing the high-dimensional discrete space based on an initial orthogonal vector coordinate system; the high-dimensional discrete space comprises space resources of at least one of a time domain, a frequency domain and a code domain; in a high-dimensional discrete space, constructing a non-stipulated coordinate system matched with the control scene requirement by taking the initial stipulated coordinate system as a reference; constructing a dual mapping relation matrix according to a non-stipulated coordinate system of the initial stipulated coordinate system, and updating the dual mapping relation matrix based on the measured data; and accessing at least one satellite or spacecraft to the ground station based on the updated dual mapping relation matrix and the constellation measurement and control link, thereby realizing effective expansion of the measurement and control link multiple access technology, and improving the measurement and control link multiple access efficiency based on the available discrete space of the multi-dimensional joint variable.

The invention provides a novel hybrid carrier multiple access scheme. According to the scheme provided by the invention, the energy propagation concept of the hybrid carrier is combined with a frequency division multiple access model, and a specific operation method and a processing flow of the hybrid carrier processing and the multiple access processing of the power signal in the sending and receiving processes are provided; and the requirements of signal anti-interference capability, transmission efficiency and multi-user and multi-time-space under an ad hoc network of a power wireless private network are met, and the method is called as hybrid carrier non-orthogonal multiple access (HC-OFDMA). Due to the fact that the energy dispersion capacity is enhanced, a plurality of users can share the same spectrum resource at the same time through non-orthogonal distribution of a power domain, the spectrum utilization rate can be remarkably improved, power distribution can be dynamically adjusted, transmission is optimized according to channel conditions of the users, more users are supported to access at the same time, the system capacity is improved, and the system performance is improved. The method is especially suitable for high-density users and large-scale Internet of Things scenes.

The invention provides an encryption access control method and platform for industrial security data, and relates to the technical field of data encryption access, and the method comprises the steps: carrying out the attribute classification and code identification of an industrial system data set; performing security level division on the industrial system data set according to the data security quantitative index system; performing matching analysis on the multi-level industrial security data set based on the data encryption algorithm list; encrypting and storing the industrial system data set based on the industrial data identification code set by adopting a multi-stage data encryption algorithm to generate an industrial encrypted data warehouse; and establishing a fine-grained access mechanism and a decryption interaction mechanism according to the user role library, and performing access authority distribution and encryption access control on the industrial encrypted data warehouse based on the fine-grained access mechanism and the decryption interaction mechanism. According to the invention, the technical problem that the comprehensive requirements of high safety, high precision and high flexibility in a modern industrial system are difficult to meet in the prior art can be solved.

The invention belongs to the technical field of block chains and information security, and particularly relates to a cross-domain access method for enhancing security privacy protection based on a block chain. The architecture comprises a global coordination chain and a plurality of domain alliance chains; the global coordination chain deploys a strategy Merkel tree root, a cross-domain authentication log and an SGX security area verification record to form a global credible verification anchor point; the domain alliance chain adopts a distributed autonomous mode, equipment registration information is maintained in each independent domain, a policy tree and an anonymous certificate library are dynamically accessed, and data sovereignty isolation is realized. The invention aims to solve the problems of identity authentication centralization, easy leakage of privacy data, low cross-domain trust transmission efficiency and the like in the traditional cross-domain access technology.

The present disclosure describes mechanisms to manage session continuity for edge computing services for edge service consumers. The session management mechanisms include continuity or handing over edge service sessions between edge computing platforms in a same edge compute cluster and between edge computing platforms in different edge compute clusters. The session management mechanisms include edge computing platform switching / handover for user equipment capable of utilizing multiple access network connections and / or multiple access technologies. The described solutions can provide edge service session continuity between connected vehicles and road side units and / or edge compute nodes.

The invention provides a storage device, a storage method and a storage access method based on lake and warehouse integration. The storage device comprises a storage management unit, a unified metadata management unit and a federal query engine unit, the storage management unit is used for realizing hybrid storage and dynamic hierarchical storage; the unified metadata management unit is used for metadata atlas construction, concurrency control and GDPR compliance support; the federal query engine is used for intelligent routing decision, SQL dialect unification and intelligent push-down optimization; based on a lake and warehouse integrated storage device and an access technology thereof, unified management of structured and unstructured data is supported, the problem of data islands is avoided, and cross-engine data visibility is realized through unified metadata management; according to the lake and warehouse integrated storage device and the access method, technologies such as a dynamic hierarchical storage strategy, intelligent routing decision, intelligent push-down optimization and the like are fused, and the storage and access efficiency and the robustness of the system are greatly improved.

The invention discloses a fine-grained data security access control method and device and a storage medium, and the method comprises the steps: obtaining terminal information which comprises hardware fingerprint information and a digital certificate; performing terminal information verification processing according to the hardware fingerprint information and the digital certificate to generate a security token; performing user information verification processing according to the security token and the user access request to generate an access request result; according to the access request result, access channel authorization processing is carried out, and a target data access channel state is generated; performing data access record processing according to the target data access channel state to generate a target operation ticket; performing storage and audit processing according to the target operation order to generate an audit report; and performing data clearing processing according to the audit report to generate a visual report. According to the invention, data security access control is realized, and security and adaptability are improved. The method can be widely applied to the technical field of data security access.

The invention discloses an unmanned aerial vehicle relay route planning method based on photoelectric hybrid switching. The method comprises the following steps: establishing a free space optical channel model, and focusing a flicker effect caused by turbulence and attenuation caused by weather; when a radio frequency channel model is constructed, line-of-sight and non-line-of-sight large-scale fading are fused, and downlink multi-user interference is quantized; establishing a hybrid obstacle model based on a Ray-AABB algorithm, fusing ground static and air dynamic obstacles, and determining a sight distance connection feasible position set; a boundary reflection type random walk model is adopted to describe user movement, and a speed and direction two-parameter updating mechanism and a boundary elastic collision rule are defined; the user throughput is dynamically optimized in combination with fractional order power distribution and non-orthogonal multiple access technologies; a deep reinforcement learning framework is provided, and a three-dimensional track, photoelectric switching and resource allocation are jointly optimized by using a dual deep Q network. According to the invention, the challenge of a low-altitude spectrum rejection environment can be effectively handled, and the robustness and adaptive capacity of the system are ensured.

The invention relates to the technical field of green communication, and discloses a visible light communication system and method based on CDMA (Code Division Multiple Access), the system comprises a transmitting end module, a visible light channel module, a receiving end module and a dynamic optimization module, by combining a CDMA multiple access technology and OFDM (Orthogonal Frequency Division Multiplexing) modulation, multi-user efficient access and spectrum resource dynamic allocation are realized, and the visible light communication efficiency is improved. User data streams are distinguished based on orthogonal spreading codes, and multi-user interference is effectively suppressed; through an OFDM subcarrier mapping and self-adaptive power allocation algorithm, the subcarrier transmitting power is optimized, the spectrum utilization rate is improved, the problem of resource allocation rigidness in a traditional TDMA / FDMA technology is solved, the communication capacity and the data transmission efficiency in a multi-user scene are remarkably improved, and by measuring the signal-to-noise ratio and the path loss of a channel in real time, the transmission efficiency of the multi-user scene is improved. And the spreading code length and the OFDM modulation order are dynamically adjusted, and signal attenuation and distortion caused by complex illumination conditions and a multipath effect are reduced.

A communication method and apparatus, the communication method comprising: a mobile management device obtaining a first message, the first message comprising identification information of a terminal device, the first message indicating a device type of the terminal device, the terminal device accessing a network by using an Internet of Things access technology; the mobile management device discovers an authentication service device according to the first message, wherein the authentication service device supports authentication and / or authentication of a terminal device accessing a network by adopting an Internet of Things access technology; and the mobile management equipment sends a first authentication request message to the authentication service equipment, the first authentication request message comprising the identification information of the terminal equipment, and the first authentication request message being used for requesting to execute authentication and / or authentication on the terminal equipment. Through the scheme of the application, the core network can execute optimization and adaptation of network function selection for the access process of the Internet of Things terminal, and the core network equipment can select a proper network function to execute the security process according to the service request or the characteristics and capability of the Internet of Things terminal.

This terminal executes a terminal-initiated cell transition regardless of an instruction from a network, and receives, from the network, a message including display of wireless access technologies used by candidate cells of a transition destination satisfying an execution condition. The terminal preferentially executes the cell transition to the candidate cell that uses the specific wireless access technology on the basis of the display.

The invention discloses a data processing method and device, a terminal and network side equipment. The data processing method of the embodiment of the invention belongs to the technical field of communication, and comprises the steps that a first protocol layer of network side equipment performs first processing on a data packet, and the first processing comprises at least one of the following items: data distribution related processing; performing data aggregation related processing; wherein the first protocol layer is located on an air interface access technology protocol layer.

The embodiment of the invention provides a big data storage optimization method based on a zero-copy collaboration technology and related equipment, and belongs to the technical field of big data storage. The method comprises a zero-copy data transmission module used for directly writing a data stream into a front-end buffer area of an annular structure through a direct memory access technology, and adopting a zero-copy algorithm based on pointer offset to parallelly separate data of each channel in a multi-thread environment; the intelligent data reduction module is used for deleting duplicated data from the data and then compressing the duplicated data; and the hybrid storage management module is used for managing the hybrid partition storage architecture and dynamically adjusting the distribution of the data in the hybrid partition storage architecture according to the data access mode. The CPU copy frequency is reduced through the zero copy technology, the data transmission efficiency is remarkably improved by combining the data reduction and intelligent layering strategies, the occupied storage space is reduced, and meanwhile the data safety and compliance are guaranteed.

This terminal that shares a frequency with a first-generation wireless access technology and supports a second-generation wireless access technology that is subsequent to the first-generation wireless access technology comprises: a communication unit for receiving information regarding a first resource which is used to transmit control information or a reference signal by a base station supporting the first-generation wireless access technology; and a control unit for controlling communication through the second-generation wireless access technology on the basis of the information regarding the first resource.

Technologies for hardware-based memory access telemetry tracking are described. A receiver circuit includes analog and digital circuitry. A memory controller includes a processing pipeline with a first processing stage to update and record a first number of access counts targeting a logical grouping of memory locations and a second processing stage to continuously sort the first number of access counts and their associated address tags corresponding to the logical grouping of memory locations, keeping only the access counts with unique address tags.

The invention relates to the technical field of power system operation and maintenance, in particular to an intelligent line shaking insulation nuclear phase test system and a test method thereof.An insulation resistance test module adopts a self-adaptive algorithm, the influence of environment temperature and humidity on a test result can be eliminated, and the insulation resistance measurement precision is remarkably improved; a dynamic grounding technology: the induced voltage suppression module adjusts a grounding state and a compensation voltage in real time through the dynamic grounding technology and a voltage compensation algorithm to ensure that a test result is not interfered by the induced voltage; a test neutral period and a quick access technology are optimized: the system can quickly complete access and test in a neutral period from grounding disconnection of a to-be-tested line to equipment access test, and damage to equipment caused by secondary rise of induced voltage is avoided; and real-time monitoring and adjustment: in the test neutral period, the system monitors the line induction voltage in real time, and dynamically adjusts the grounding state and the compensation voltage according to the monitoring result to ensure the equipment safety.

The invention discloses a hybrid far and near field communication beam and power joint optimization method based on rate splitting, and relates to the technical field of wireless communication and novel multiple access. The designed hybrid near-far field communication beam and power joint optimization method comprises the following four steps: S1, establishing a far-field user and a near-field user channel model in a hybrid near-far field communication scene; s2, splitting data of near-field users into public information streams and private information streams by using a rate splitting multiple access technology; s3, pre-configuring beams of the public information flow and the private information flow of the near-field user by using a zero-forcing algorithm, so that the far-field user occupies the beams of the near-field user to carry out information transmission; and S4, establishing an optimization problem by taking maximization of the reachable sum rate as a target, and designing an iterative optimization algorithm to jointly process beam allocation of the near-field users and transmission power allocation variables of the near-field users and the far-field users and the near-field users. According to the invention, the throughput and connectivity of the communication network can be obviously improved.

The invention discloses a field live-line safety protection method and system for an autonomous robot, and belongs to the technical field of intelligent live-line detection. The method comprises the following steps: based on a preset adaptive access technology, in a simulation environment, training a virtual simulation model by using a constructed deep reinforcement learning algorithm to complete a specified action so as to train an action algorithm of the virtual simulation model, and transplanting the trained action algorithm to an autonomous robot; based on a preset comprehensive evaluation model, identifying the monitoring data, determining behaviors of the autonomous robot, and generating a sensing result; and generating an electronic map of risk score quantitative distribution based on a perception result, collecting fine-grained action information of the autonomous robot based on the electronic map, and performing active behavior risk early warning based on the fine-grained action information. According to the invention, the performance detection work of the combined transformer can be carried out under the electrified condition, and the power failure loss is reduced.

The invention relates to the technical field of communication, and discloses a 5G slice-based low-altitude unmanned system communication control method and an industrial gateway, and the method comprises the following steps: S1, creating a special communication slice for a low-altitude unmanned system in a 5G core network, and configuring high priority and predefined service quality parameters; s2, based on the created special communication slice, the data processing capability is sunk to an edge computing node, and the edge computing node is deployed at a geographic position close to the low-altitude unmanned system; and S3, after data processing configuration is completed at the edge computing node, independent communication channels are distributed to each unmanned aerial vehicle in the low-altitude unmanned system by using a multiple access technology and a multiple-input-multiple-output technology of the 5G network. According to the invention, by introducing 5G slices, edge computing nodes, dynamic communication path selection and spectrum resource allocation technologies, low time delay, high transmission rate and efficient resource utilization of the low-altitude unmanned system are realized.

The disclosure relates to a fifth generation (5G) communication system or a sixth generation (6G) communication system for supporting higher data rates beyond a fourth generation (4G) communication system, such as long term evolution (LTE). A method performed by a first device in a communication system is provided. The method includes performing random access procedure, wherein information associated with a first device type is transmitted to a base station during the random access procedure, and transmitting and / or receiving signals based on first resource among scheduled first type resources dedicated to a first device type, wherein the first device type is associated with fixed wireless access technology.

The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates and satisfying various service requirements. A method performed by a terminal in a communication system is provided. The method includes transmitting, to a network function related to mobility management, a first NAS message including capability information that indicates whether the terminal supports an access technology utilization control; receiving, from the network function, a second NAS message including information on the access technology utilization control, the information on the access technology utilization control indicating restricted access technology associated with a current PLMN; storing the information on the access technology utilization control; and applying the information on the access technology utilization control for a cell selection and a cell reselection in the current PLMN to restrict an access to the restricted access technology.