17 results about "Dynamic spectrum management" patented technology

The invention discloses a self-adaptive communication method and system for ubiquitous electric power Internet of Things intelligent metering equipment, relates to the technical field of Internet of Things communication, and solves the problems of inaccurate quantitative communication, insufficient communication efficiency and poor flexibility in existing intelligent metering equipment communication. According to the invention, the accuracy and reliability of data transmission are improved through a dynamic network self-organizing algorithm and a multi-hop communication mechanism, the communication efficiency is optimized through multi-path transmission and dynamic spectrum management, and the flexibility and adaptability of the network are enhanced through an adaptive modulation coding model and a real-time optimization link selection strategy. And secure transmission of the data is further guaranteed through a multi-layer security mechanism, and the communication performance and flexibility of the intelligent metering equipment are remarkably improved.

The invention provides a dynamic spectrum access method based on zero sample machine forgetting. According to the method, a deep Q network teacher model is constructed to carry out spectrum access training, a generative adversarial network is adopted to generate high-quality pseudo data, and a gating knowledge distillation mechanism is designed to realize selective forgetting. The core of the method is that machine forgetting can be realized without accessing original training data, and the defects of a traditional method in the aspect of privacy protection are effectively overcome. The method comprises the following steps: firstly, defining a state space containing a channel, a user demand and a geographic position, and designing a reward function considering basic reward, channel utilization efficiency, user satisfaction and interference influence; on the basis, model training is realized through a teacher-student network architecture and a knowledge distillation technology, and the effectiveness of the method is verified by adopting multiple evaluation indexes. The method maintains good spectrum access performance while protecting user privacy, is high in calculation efficiency, is easy to deploy, and is suitable for dynamic spectrum management in an Internet of Things environment.

The present invention discloses a financial payment security verification device and method based on RFID technology, the device comprising a main control unit, a tunable antenna array, a biometric feature collection unit, a hardware encryption storage unit and a blockchain processing unit; the main control unit respectively performs RFID communication control and biometric feature recognition through a dual processor architecture; the tunable antenna array adopts dynamic spectrum hopping technology to switch between multiple frequency bands; the biometric feature collection unit integrates fingerprint and palm print recognition functions; a dual random source is used to generate a frequency hopping sequence, frequency band switching is performed in combination with channel quality assessment, and transactions are verified through blockchain technology; the present invention significantly improves the security and reliability of the payment process through the collaboration of multiple biometric feature recognition, dynamic spectrum management and blockchain technology, and effectively prevents various payment frauds and attacks.

In a dynamic spectrum management apparatus, system, method, and computer program product first and second priority level secondary users dynamically use spectrum resources of a primary user. For second priority level secondary users, processing circuitry is configured to, based on blockchain, obtain a spectrum coordination request, acknowledged by a spectrum management apparatus, of another second priority level secondary user serving as a requester for the spectrum resources, wherein the blockchain at least comprises each second priority level secondary user, who is using or requests the use of the spectrum resources, serving as a node, and the spectrum coordination request indicates that the requester makes a request for the second priority level secondary user, who is using the spectrum resources, to perform coordination to provide an interference margin for the requester; and execute a first smart contract on the blockchain, so as to determine content of coordination to be performed.

A system and method for dynamic spectrum management are disclosed. An information processing system registers a communication device for operation in a shared frequency range. The system performs a frequency grant procedure for the communication device by accessing a database that records interference power values for a defined frequency management region. To protect a first, primary system, the system acquires the active operation area information of the first system and the coverage area information of the registered communication device. The system then determines whether to permit radio wave emission by the communication device based on a comparison between the operation area information and the coverage area information. Radio wave emission may be denied if the communication device's coverage area overlaps with the first system's active operation area, thereby preventing harmful interference.

An unmanned aircraft system (UAS) control apparatus is disclosed. In embodiments, the UAS control apparatus is embodied in a control station to manage command and control (C2) functions for UAS operations in a designated coverage volume including a geofenced interference region proximate to the control station, controlling each UAS via connections on a spectrum of C2 channels. The UAS control apparatus generates flight plans for UAS operations, providing separation and keeping UAS operations away from the control station to minimize RF interference with other UAS C2 connections. Should a UAS be required to operate proximate to the control station, the UAS control apparatus employs dynamic spectrum management with respect to other concurrently operating UAS to eliminate, reduce, or mitigate RF interference resulting from the encroaching UAS.

The invention discloses a financial payment security verification device and method based on an RFID technology. The device comprises a main control unit, a tunable antenna array, a biological characteristic acquisition unit, a hardware encryption storage unit and a block chain processing unit. The main control unit respectively executes RFID communication control and biological characteristic identification through a dual-processor architecture; the tunable antenna array is switched among a plurality of frequency bands by adopting a dynamic spectrum hopping technology; the biological characteristic acquisition unit integrates fingerprint and palmprint recognition functions; a frequency hopping sequence is generated by adopting double random sources, frequency band switching is carried out in combination with channel quality evaluation, and a transaction is verified through a block chain technology; through cooperation of multiple biological feature recognition, dynamic spectrum management and the block chain technology, the security and reliability of the payment process are significantly improved, and various payment fraud and attack behaviors are effectively prevented.

The invention provides a wireless communication system for dynamic spectrum management, and the system comprises an IQ modulator which modulates a baseband signal to a first optical carrier; the first tunable carrier generation device is used for generating a tunable first tunable optical carrier based on the first optical carrier; the photon wireless conversion device is used for converting a beam-combined signal of the first tunable optical carrier and the modulated baseband signal to obtain a transmitting signal; the wireless photon conversion device is used for converting the transmitting signal and a second optical carrier to obtain a second optical signal; the second tunable carrier generation device is used for generating a tunable second tunable optical carrier based on the second optical carrier; the IQ demodulator is used for performing coherent mixing and photoelectric detection on the beam-combined signal of the second optical signal and the second tunable optical carrier to obtain a baseband signal; and the first tunable carrier generation device and the second tunable carrier generation device are integrated with hot electrodes. According to the invention, the radio frequency signal can be flexibly adjusted in a wide-spectrum manner, thereby realizing dynamic spectrum management.

Embodiments of the present disclosure describe systems and methods for dynamic spectrum management and interference mitigation in mobile communications through a network of satellite base stations. Embodiments herein monitor communication traffic across a geographic area served by one or more satellite base stations. The monitoring of the traffic includes determining spectrum assignments for the terrestrial network within the geographic area. In response, the system dynamically adjusts a spectrum assignment to the one or more satellite base stations so the assigned spectrum reduces cross spectrum interference.

For digital subscriber lines, the entire system needs to deal with the crosstalk problem of adjacent cable pairs in the same cable bundle. The present disclosure provides a mechanism for dynamic spectrum management to reduce crosstalk between subscriber lines by reducing the unnecessary power spectral density on some subscriber lines to optimize the overall performance of many subscriber lines. The decision of this reduction (or power back-off) is generally based on the loop distance between the central office and the customer equipment. The shorter the loop distance, the lower the power. However, this does not take into account the quality of each subscriber line, i.e., its background noise and external interference. The transceivers can receive this information, such as background noise and external interference. The negotiation procedure includes this information to adjust the power reduction so that the reduction does not degrade the potential best performance of these subscriber lines.

The invention relates to a spectrum access method and device, electronic equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring a maximum return value corresponding to a current user to be accessed; on the basis of the maximum return value and / or the total number of the users currently accessing the multiple spectrums, determining whether the spectrums are allowed to be allocated to the current to-be-accessed users or not; and in response to determining that the spectrum is allowed to be allocated to the current to-be-accessed user, allocating the spectrum corresponding to the maximum return value in the plurality of spectrums to the current to-be-accessed user as a target spectrum. Thus, the return value corresponding to each frequency spectrum in the plurality of frequency spectrums is the return value obtained by assuming that the frequency spectrum is allocated to the current user to be accessed, that is, in the disclosure, each frequency spectrum can be dynamically tried by acquiring the return value corresponding to each frequency spectrum. Therefore, the optimal spectrum capable of balancing the performance in all aspects can be screened through continuous attempts and feedback, so that the efficiency and the fairness of dynamic spectrum management can be improved.

Embodiments of the present disclosure describe systems and methods for dynamic spectrum management and interference mitigation in mobile communications through a network of extraterrestrial base stations. Embodiments herein monitor communication traffic across various geographic areas and generate traffic heatmaps that allow for data analysis of and visualization of traffic intensity and distribution. The disclosed methods identify areas exceeding predefined congestion or interference thresholds within these heatmaps. In response, the system dynamically adjusts downlink signal parameters of the extraterrestrial base stations, such as muting or reducing signal strength in congested areas, to mitigate interference.

Various embodiments for dynamic spectrum management for radio-based portable networks are disclosed. In one embodiment, it is determined that a portable radio unit implementing a cell of a radio-based network has moved away from a reference position associated with a first spectrum allocation used by the portable radio unit. A second spectrum allocation for the portable radio unit is obtained based at least in part on the direction of movement of the portable radio unit. The portable radio unit is then configured to use the second spectrum allocation instead of the first spectrum allocation.

The invention discloses a near field ad hoc network communication and cooperative control method for an intelligent safety helmet and operation equipment based on an open source gap. The method comprises the following steps: realizing automatic discovery of equipment through a distributed soft bus; generating a device fingerprint based on hardware features in the trusted execution environment, completing bidirectional authentication and security key negotiation, and establishing a secure ad hoc network; dynamic spectrum management and self-adaptive power control are carried out through cooperative sensing, and an intelligent multi-path routing algorithm is operated to maintain an optimal data transmission path; the intelligent safety helmets serve as control nodes, the states of all the devices are synchronized in real time through distributed data management, cooperative control instructions are generated according to task blueprints and real-time working conditions, and cooperative operation and emergency linkage between the devices are achieved through path distribution. According to the invention, the problems of weak safety, poor anti-interference performance, coordination delay and the like of a traditional scheme in a complex mobile environment are solved, and high-safety, high-reliability and self-adaptive near-field coordination control is realized.

The invention relates to the technical field of interference positioning, in particular to a radio station interference source positioning method based on an antenna array, which comprises the following steps of: recording a space coordinate position sequence of a mobile platform corresponding to each sampling moment, and forming a space-time sampling signal synchronous with the space position sequence; according to the space coordinate position sequence and the space-time sampling signal, delay and phase compensation are carried out on signals of all subsequent sampling points, and a reconstruction signal equivalent to an ultra-large aperture virtual array is generated; performing spatial spectrum estimation on the reconstructed signal, and calculating a direction-of-arrival angle; and resolving and outputting the absolute geographic position coordinates of the target interference source through a single-station direction-finding cross positioning method. According to the method, the complexity of multi-platform synchronization is avoided, the method is a practical technical breakthrough aiming at the rapid positioning requirement of a short-time interference source, and the method is particularly suitable for emergency monitoring and dynamic spectrum management and control scenes.

The invention discloses a low-loss filtering transmission-type reconfigurable intelligent surface, and aims to solve the problems that an existing filtering reconfigurable intelligent surface is insufficient in frequency selectivity, high in insertion loss, narrow in beam coverage range and difficult in collaborative design of transmission and regulation. The structure adopts a six-layer metal laminated framework, a receiving layer adopts a symmetrical H-shaped patch and is embedded with a PIN diode to realize 1-bit phase modulation, a regulation and control layer and a transmitting layer cooperatively introduce double transmission zeros through an E-shaped open circuit branch knot, a symmetrical slot and a parasitic branch knot, and low-loss and high-selectivity filtering is realized by combining multi-physical field optimization. The working frequency band is 6.23-7.38 GHz, the 3dB relative bandwidth reaches 17%, the minimum transmission loss in a passband is-0.25 dB, the phase regulation error is smaller than + / -5 degrees, + / -70-degree wide-angle-domain dual-beam scanning is supported, and the out-of-band suppression depth breaks through-40 dB. The method integrates the functions of filtering, low loss, wide-angle beam forming and the like, is suitable for scenes of dynamic spectrum management, anti-interference transmission and the like in a 6G intelligent communication system, and has a wide application prospect.

Technologies for dynamic spectrum management in a cellular network are described. One method include receiving a plurality of requests from one or more user equipment (UE); determining a quality of service (QoS) metric associated with a first request of the plurality of requests; retrieving a plurality of spectrum parameters associated with spectrum of the cellular network; determining one or more spectrum bands for the first request according to the QoS metric and the plurality of spectrum parameters; and allocating the one or more spectrum bands responding to the first request to a corresponding UE of the one or more UE.