62results about How to "Improve transmission reliability" patented technology

The invention discloses an uplink and downlink combined wireless communication method and system based on channel semantic feature feedback. The method constructs an uplink and downlink closed-loop semantic communication architecture: a terminal side obtains a downlink channel matrix, generates a channel semantic feature vector through a channel semantic feature extraction network, inputs the channel semantic feature vector into a compression coding network to obtain a low-dimensional feedback code word, and sends the low-dimensional feedback code word to a base station side through an uplink limited feedback link; the base station side decodes and restores the low-dimensional feedback code word to obtain a reconstructed channel semantic feature vector, inputs the reconstructed channel semantic feature vector as prior information into a channel sensing sequence coding and modulation network, and generates a complex modulation signal under the condition of meeting the transmission power constraint; and the terminal side is combined with local channel information, and original data is recovered through a channel sensing demodulation network. Through joint optimization of the channel semantic feedback and the transceiver end-to-end transmission process, the channel state information feedback overhead is reduced under the constraint of limited feedback resources, and the transmission reliability and robustness in a complex channel environment are improved.

This application provides a cross-application service scheduling and execution method and system in a vehicle environment, relating to the field of intelligent vehicle system technology. It acquires known service-related data of the vehicle system, as well as environmental perception data and user voice information of the vehicle environment; parses the user voice information to obtain target demand information, intent association information, and voice feature information; forms scene adaptation parameters based on environmental perception data; generates multiple second instruction transmission signals based on target demand information; detects each target demand information based on service-related data, intent association information, voice feature information, and scene adaptation parameters, obtains detection results, and combines these with the second instruction transmission signals to schedule and execute multiple cross-application services in the vehicle environment, generating service scheduling and execution results. This achieves dynamic coordination and orderly scheduling of cross-application services, improving the response accuracy and execution security of the vehicle system in complex driving scenarios.

The invention discloses a segmented transmission method based on verification message delay feedback, which belongs to the technical field of data transmission, and comprises the following steps: setting message segmentation bytes, splitting a data packet to be transmitted into message segments, configuring verification sub-messages for the message segments, and encrypting the verification sub-messages; sending the encrypted verification sub-message, synchronously starting a timer, transmitting the verification sub-message in batches in combination with batch limitation, and performing link detection to judge whether the verification transmission is overtime or not; if the verification transmission is not overtime, obtaining effective transmission delay, otherwise, performing verification retransmission based on a backoff retransmission interval; calculating an optimal sending time interval by using a particle swarm algorithm, and setting an interval updating trigger mechanism; sending the encrypted message segments in sequence based on the optimal sending time interval, judging whether the message transmission is overtime or not in combination with the state of a timer, and performing overtime supplementary transmission; after the to-be-transmitted data packet is sent, decryption is carried out, meanwhile, the session key state is monitored, and life cycle management is carried out.

Disclosed are a downlink channel transmission method, apparatus and device, and a readable storage medium, belonging to the technical field of communications, the method comprising: a terminal determining, according to first information, at least one of whether to enable a target transmission function, the number of target resource sets, and the number of target resource sets; the number of candidate transmission positions or monitoring positions of the target resource set, the number of repeated transmission times of the target downlink channel, and the resource position of the target resource set; the terminal receives a target downlink channel in at least one target resource set; wherein the target downlink channel repeatedly transmits or bears the same content on one or more target resource sets.

This invention discloses a power distribution IoT communication and equipment management system based on dynamic optimization algorithms. It adopts a four-layer architecture: a perception layer, an edge layer, a platform layer, and an application layer. The end devices in the perception layer are used to collect power distribution data and execute control commands. The edge devices in the edge layer, and their managed sub-devices, are used for protocol conversion, data preprocessing, and executing dynamic optimization algorithms. The platform layer is used for message parsing, algorithm optimization, device management, and data storage. The application layer provides a visual user interface. Through dynamic optimization algorithms and a full lifecycle device management scheme, the system significantly improves the reliability of power distribution IoT data transmission, optimizes network resource utilization, enhances equipment operating efficiency, ensures the real-time performance of critical services, and features strong compatibility, security, and concurrent processing capabilities.

The invention discloses an intelligent construction site video monitoring system based on a P2P architecture, and relates to the video monitoring technology, and the system comprises a monitoring equipment end which comprises a plurality of monitoring equipment groups and is used for collecting video data; the distributed NVR cluster comprises a plurality of NVRs, and each NVR corresponds to one monitoring equipment group and is used for receiving and storing the video data sent by the monitoring equipment of the monitoring equipment group; the NVR is in communication connection with the video client; the lightweight index server establishes communication connection with the NVR and the video client at the same time and is used for dynamically distributing node loads through a load balancing algorithm; and a plurality of video clients, a P2P network is established among the plurality of video clients, and the plurality of video clients are used for obtaining video data from the NVR or the video clients except the video clients according to the dynamically distributed nodes in the lightweight index server and playing the video data. The invention further discloses a monitoring method. According to the invention, the bottleneck problem of a centralized architecture in the prior art is solved, the single-point fault risk is eliminated, and the system expansibility is improved.

The invention provides a power distribution network resource scheduling method and system based on computing power network integration, and belongs to the technical field of data processing and resource scheduling, and the method comprises the steps: obtaining a plurality of communication signals and a plurality of corresponding service requests, and packaging the communication signals and the service requests into a plurality of standardized data; corresponding response tasks are generated according to the service requests, and task resource requirements of the response tasks are determined; performing resource scheduling on each response task according to each task resource demand and a preset resource scheduling model, and determining resource configuration of each response task; according to each resource configuration, scheduling and allocating a plurality of virtual resources to each response task from a preset resource pool; and according to each response task and a plurality of corresponding virtual resource units, carrying out data processing on each piece of standardized data, so that by implementing the method and the device, the problems of relatively low utilization rate of power distribution network resources and inflexible scheduling in the prior art can be solved.

The invention relates to the cross technical field of wireless communication and intelligent agriculture, in particular to a NOMA-SIC uplink weighting and rate maximization method based on an unmanned aerial vehicle (RIS), and the method comprises the steps: constructing an uplink system composed of a fusion center, an unmanned aerial vehicle reconfigurable intelligent surface and a sensor node, and enabling the fusion center to employ a continuous interference elimination technology, and realizing multi-user concurrent transmission based on power domain multiplexing of non-orthogonal multiple access. According to the method, fractional programming, quadratic transformation and successive convex approximation technologies are jointly used, phase configuration of the RIS and sensor transmitting power are alternately optimized, beam forming vectors are received by a fusion center, and under the condition that the power, phase and service quality constraint conditions are met, the system weighting sum rate is maximized. The advantages of NOMA spectrum multiplexing and SIC interference elimination are brought into full play, the transmission reliability and the spectrum efficiency are remarkably improved, and the method is suitable for low-delay and high-reliability acquisition of intelligent agricultural large-scale sensor data and can be expanded to the scenes of industrial Internet of Things, emergency communication and the like.

This application relates to the field of vehicle software upgrade technology, specifically to a method, system, and product for controlling the flashing of vehicle ECUs. The method includes: S1, a flashing control MCU obtains a flashing request and sends a flashing initialization signal to the vehicle ECU; S2, the vehicle ECU executes the flashing initialization process and sends a feedback signal to the flashing control MCU, registering as an online vehicle ECU; S3, the flashing control MCU obtains the flashing program package, unpacks it to obtain flashing subroutine packages, and stores them separately for different data transmission buses corresponding to different online vehicle ECUs; S4, after unpacking, the flashing control MCU executes a data transmission task, transmitting the flashing subroutine packages in parallel to the online vehicle ECUs via different data transmission buses, and the online vehicle ECU reads the flashing subroutine packages and executes the flashing process; S5, after completing the flashing process, the online vehicle ECU restarts and executes the subsequent flashing process. This application enables convenient, efficient, and controllable flashing of vehicle ECUs.

The invention discloses a multi-modal physiological signal dynamic impedance adaptation and synchronous acquisition system, which belongs to the technical field of multi-modal data acquisition, and comprises a plurality of multi-modal data acquisition terminals, a relay gateway and an upper computer, the multi-modal data acquisition terminals are connected with the relay gateway, and the upper computer is connected with the relay gateway; each multi-modal data acquisition terminal comprises a multi-modal data acquisition end, a control module, a wireless communication module and a storage module, the multi-modal data acquisition end is used for acquiring multi-modal data, the control module receives data transmitted by the multi-modal data acquisition end and transmits the received data to the storage module and the relay gateway, and meanwhile, the wireless communication module transmits the received data to the relay gateway. The impedance is dynamically adapted to improve the input signal quality of the multi-modal data acquisition end; the storage module is used for storing data transmitted by the control module, and the wireless communication module is used for transmitting signals. By adopting the system, the portability of equipment and the wearing comfort of a user are improved, and the synchronization precision is high.

The utility model discloses an electric ship, including ship body structure, deck structure, ship bottom support structure, power system and advancing system. The utility model connects bridge through rigid connection piece body and two groups of lower piece, and the ship body torsional rigidity and transverse stability are improved obviously, form the low resistance navigation characteristic of catamaran's particularity, and the space utilization rate is optimized through the functional division of the layered arrangement upper deck and lower deck, and the grid skeleton of the ship bottom support structure is embedded, and the lower piece structure strength is strengthened, and the integrated ballast water tank function enhances the ship counterweight adjusting capacity, and the power system passes through the modularization battery pack, and the battery thermal runaway risk is reduced while ensuring the energy supply stability, and the advancing system adopts the combination scheme of sectional flange connection structure and watertight packaging subassembly, guarantees the transmission stability of drive shaft when the ship body deformation, avoids the water seepage into the transmission mechanism, satisfies the torsional deformation and the propulsion efficiency such as ship operation core demand.

The present application relates to the field of communication and disaster warning, and proposes a disaster event priority broadcast method and system based on minimum necessary information, which comprises the following steps: when an abnormal event is detected by a monitoring node, an event data packet is constructed, the data packet adopts a minimum necessary information structure and only contains node identification, time stamp, type, initial motion characteristic parameter and quality mark; priority score is calculated according to time urgency, spatial density and data quality, and the data packet is classified; an access mechanism based on channel competition is adopted, a competition window is configured according to priority difference, a smaller window is used for high priority data to shorten the backoff time, and the window is dynamically adjusted to maintain the priority difference when the network is congested; the network state is monitored in real time, and the sending strategy is adjusted according to the packet loss rate and the time delay. Through the simplified data structure and dynamic priority control, the present application effectively reduces the transmission delay, solves the concurrent conflict problem, and guarantees the real-time and reliability of the disaster warning information.

This invention discloses a multidimensional indexed modulation chaotic communication method and apparatus based on neural network-assisted detection, belonging to the field of wireless communication and chaotic spread spectrum communication technology. The method includes: firstly, segmenting the input bitstream to obtain modulation bits, domain index bits, codeword index bits, and reference index bits; then, selecting the corresponding transform domain codebook based on the domain index and the corresponding codeword basis vector based on the codeword index, while simultaneously generating an orthogonal chaotic sequence pool and selecting the corresponding reference chaotic sequence; next, performing MPSK modulation on the modulation bits, and combining the codeword basis vector and the reference chaotic sequence to generate a multidimensional indexed modulation chaotic signal, which is then transmitted through a wireless channel after multi-carrier modulation; the receiving end demodulates, filters, and samples the received signal, and inputs it into a multi-task convolutional neural network detector to achieve joint detection of modulation symbols, domain index, codeword index, and reference index, thereby recovering the transmitted bitstream.

The invention discloses a secret communication method based on energy-information integrated transmission, and relates to the field of power line communication. The method mainly comprises an anti-eavesdropping circuit design, a pseudo-random information coverage-based secret communication method, and realization of secret communication based on energy-information integrated transmission of the AC micro-grid. The method provided by the invention aims at the secret communication of the alternating-current micro-grid, and the design provides a new encryption strategy for the user communication of the alternating-current micro-grid due to the fact that the research on the energy-information integrated communication of the alternating-current micro-grid at present rarely relates to the privacy protection of the user information. According to the method, additional communication lines are not needed, information sending, transmission and receiving can be achieved through an existing controller and an alternating-current power line, cost is reduced, and secret communication of alternating-current micro-grid users is achieved through a pseudo-random information coverage method.

This invention discloses a method, system, equipment, and medium for the synchronous distribution and analysis of aerospace simulation training scenarios. The method includes: the director notifying both sides of the adversarial training to acquire scenario information; both sides processing the acquired scenario information to generate scenario model data and satellite model data respectively; both sides loading the scenario model data and satellite model data and conducting adversarial exercises; and the maneuver information of one side being sent to the other side after a delay by the director. This invention employs a unified distribution of basic simulation scenario information and satellite, ground station, orbit, and sensor data by the director; both sides acquiring data and constructing dynamic model mapping relationships through modular interfaces, and synchronously initializing using an orbit predictor; real-time acquisition of one's own satellite maneuver parameters and delayed maneuver information during the adversarial process; and improved information interaction efficiency and security through a lightweight data transmission mechanism.

The invention discloses a broadband dual-channel magnetic coupling wireless power and data transmission slip ring, which adopts a non-contact magnetic coupling mode and solves the problems of short service life, unstable transmission, frequent maintenance and the like caused by mechanical wear of a traditional contact slip ring. Through the bipolar structure of the data coupling antenna, the magnetic flux sum of an inner ring and an outer ring is zero, and complete decoupling of power and data airspace is realized; the bandwidth of a data channel is expanded by adopting multi-stage L-shaped impedance matching, and mutual inductance of power and data coupling parts is stable in the 360-degree rotation process. The slip ring improves the transmission reliability, the rotation adaptability and the data throughput capacity, and is suitable for rotary connection systems in the fields of petroleum drilling, aerospace equipment and the like.

This invention relates to the field of vehicle-to-everything (V2X) technology and discloses a method for allocating D2D (Device-to-Device) resources in V2X based on dual-threshold cooperative reservation. The method includes: a base station periodically acquiring link status information of cellular users and D2D user pairs within the V2X coverage area, and calculating the signal-to-interference-plus-noise ratio (SINR) of the D2D link; dividing the SINR into three intervals using preset handover and reservation thresholds to determine the corresponding operating modes of the D2D user pairs; constructing a weighted bipartite graph based on the operating modes and service priority weights of the D2D user pairs, and performing user-resource block matching and allocation using a weighted Hungarian algorithm, marking the resource blocks matched by users in the cooperative reservation mode as reserved; periodically monitoring the status of reserved resource blocks, and releasing the corresponding resource blocks to the available resource pool when preset release conditions are met. This invention can improve the spectrum resource utilization rate of V2X D2D communication systems under limited spectrum resource conditions.

This invention relates to a vehicle-mounted adaptive communication method and system. The method includes: after the vehicle starts, searching for an ad hoc network via the vehicle's in-vehicle communication terminal, sending an access request and accepting authentication, and accessing the ad hoc network after successful authentication; during voice communication via the ad hoc network, collecting environmental data of the vehicle in real time, and predicting the optimal communication channel and transmission power parameters based on the environmental data; using the optimal communication channel and applying the transmission power parameters for voice communication, and monitoring the channel quality of the optimal communication channel during voice communication; when the channel quality does not meet a preset quality threshold, re-determining a new optimal communication channel, switching to the new optimal communication channel, and updating the transmission power parameters to continue voice communication. Using this invention can improve the reliability of in-vehicle communication terminal communication and the clarity of voice calls.

The invention provides a data transmission method and electronic equipment. The method comprises the following steps: receiving a data request sent by a client through a first channel corresponding to a first channel type; judging whether a preset field exists in the data request or not, wherein the preset field is used for representing that the client supports data transmission through a channel of a second channel type; if yes, current operation parameters and communication configuration information of the server are obtained, a response message corresponding to the data request is determined according to the data request, the current operation parameters and the communication configuration information, and the response message comprises an identifier of a target channel type; and the response message is sent to the client through the first channel, so that the client and the server transmit data through the channel of the target channel type, the resource state of the server can be adapted to optimize the data transmission efficiency, and the transmission reliability of the system is improved.

The invention relates to the technical field of network communication optimization, and provides a communication method and device. The method comprises the steps that under the condition that it is monitored that data to be sent exist, a first serial receiving and sending module in first equipment is started, first notification information is sent to second equipment, the first notification information is used for indicating to start a second serial receiving and sending module in the second equipment, and under the condition that second notification information sent by the second equipment is not received, the second serial receiving and sending module in the second equipment is started. And storing the received data in a first cache unit in the first device according to the second notification information, the second notification information being used for indicating that the second serial transceiver module is started, and sending the received data and / or newly received data to the second device when the second notification information sent by the second device is received. According to the communication method provided by the invention, the received data is temporarily stored through the first cache unit, parallel processing of data buffering and link establishment is realized, and the problem of data loss caused by unready opposite equipment is effectively avoided.

A method for operating a first network device of a communications network, wherein the method comprises: determining or receiving (102), by means of an ingress interface, an ingress data stream comprising payload data to be transmitted towards a second network device; determining or receiving (104), by means of a correlation observer, at least one correlation value for a plurality of communication paths between the first network device and the second network device, wherein each of the plurality of communication paths comprises a different one of a plurality of physical channels; determining (106), by means of a multi-connectivity controller, a plurality of egress data streams in dependence on the at least one correlation value and in dependence on the ingress data stream; and transmitting (108), via a respective one of a plurality of egress queues, wherein each egress data stream is associated with a different one of the plurality of paths.

The present disclosure provides a communication data transmission method, device, electronic equipment, storage medium and system, relating to the technical field of communication, the communication data transmission method is applied to a gateway device, the gateway device is connected with a user plane function network element, the communication data transmission method comprises the following steps: receiving service data sent by the user plane function network element, wherein the service data is service data sent by a first user terminal, and the service data is sent to a first wireless network access device and then sent to a core network by the first wireless network access device in the case that the first network fixed access device accesses a fixed network and a fault of the fixed network is determined; and the service data is sent to a second user terminal connected with a second network fixed access device. The communication data transmission scheme provided in the present disclosure can improve the transmission reliability of service data.

A non-orthogonal semi-unlicensed adaptive transmission method for low-Earth orbit (LEO) satellite communication includes: simultaneously selecting scheduled licensed users and selected unlicensed users according to preset scheduling rules; comparing the channel gain of the licensed users with a preset transmission strategy decision threshold value, and selecting transmission strategy A or transmission strategy B; if transmission strategy A is executed: adjusting the transmission power of each user according to the power allocation method specified in transmission strategy A, and simultaneously uploading their respective signals to the LEO satellite using an uplink non-orthogonal access method; the LEO satellite decoding order is to decode the licensed user signal first, and then decode the unlicensed user signal; if transmission strategy B is executed: adjusting the transmission power of each user according to the power allocation method specified in transmission strategy B, and simultaneously uploading their respective signals to the LEO satellite using an uplink non-orthogonal access method; the LEO satellite decoding order is to decode the unlicensed user signal first, and then decode the licensed user signal.

The application provides a channel quality sensing-based adaptive modulation method and system for satellite-ground communication, and relates to the technical field of satellite-ground broadband communication.The method comprises the following steps: acquiring a set of link state parameters of a satellite-ground communication link in real time and performing normalization processing to generate a channel state feature vector; performing fusion evaluation on the channel state feature vector through a channel quality evaluation model to output a channel quality evaluation index; inputting the channel quality evaluation index into an adaptive modulation reconstruction model and judging a corresponding quality grade interval, and determining a modulation mode according to the quality grade interval; indexing modulation order parameters and channel coding rate parameters corresponding to the modulation mode in a modulation parameter configuration table, and generating a corresponding modulation switching instruction; and based on the modulation switching instruction, performing interleaving slice processing on to-be-downloaded remote sensing data to generate independent slice data and evenly distribute the independent slice data to baseband processing threads for parallel modulation and transmission, so that a dynamic balance among spectral efficiency, transmission rate and stability is achieved.

The invention discloses an elevator Internet of Things data high-concurrency hierarchical compression transmission method and system based on edge computing, and the method comprises the steps: an elevator Internet of Things edge computing node collects elevator operation full-amount Internet of Things data in real time, and the data is graded into key data and conventional data through a multi-dimensional data value quantitative evaluation method. The node carries out lossless packaging on key data, carries out high-power compression on conventional data, initializes adaptive transmission strategies for the two types of data and then transmits the two types of data to the cloud platform. The edge computing node senses the network transmission state in real time, dynamically adjusts the transmission strategy according to the network state, improves the conventional data compression ratio and reduces the transmission rate when the network is congested, and allocates higher bandwidth for key data. Meanwhile, a dynamic adaptive mathematical model is constructed based on network state parameters and transmission performance parameters, optimal parameters are solved, and self-adaptive adjustment and optimization of a transmission strategy are completed. And the real-time performance and effectiveness of elevator emergency disposal are guaranteed.

The invention relates to the technical field of communication anti-interference, and discloses a transformer substation visible light communication anti-electromagnetic interference modulation method and system, and the method comprises the steps: receiving an original data message from visible light communication in a transformer substation, and carrying out the error verification coding, and obtaining a baseband data stream; reconstructing the initial frequency domain symbol block based on the electromagnetic interference spectrum characteristics to obtain an anti-interference modulation signal; performing time-frequency two-dimensional pilot frequency embedding on the anti-interference modulation signal based on a multipath reflection path characteristic of a space structure in the transformer substation to obtain a pilot frequency auxiliary signal; mapping the pilot frequency auxiliary signal to a light emitting diode driving circuit to obtain a visible light signal; performing linear conversion on the photon flow density change of the visible light signal to obtain a receiving electric signal; performing joint channel purification on the received electric signal according to the pilot pattern of the received electric signal to obtain a restored data message; the visible light communication anti-interference transmission efficiency can be improved.

The application discloses a physical sidelink feedback channel transmission method and device, and belongs to the technical field of wireless communication. The physical sidelink feedback channel transmission method comprises the following steps: a terminal transmits or receives a PSFCH, wherein the terminal transmits and / or receives all or part of symbols in a DMRS pattern of a first DMRS on a first symbol, and the first symbol is used for automatic gain control of the PSFCH.

The application relates to the technical field of data interaction, and discloses a high-efficiency dual-protocol intelligent agent data interaction system, which comprises a dual-stack deployment and channel mapping module, a cross-protocol weight distribution module, a collaborative perception logical channel construction module, a cross-protocol flow control coupling and transparent migration module and a packaging and delivery module. Dual-protocol communication components containing MCP protocol stacks and A2A protocol stacks are deployed on each intelligent agent node, and a virtual channel mapping table is established. The channel distribution weight of data packets between MCP channels and A2A channels is determined. Dual-protocol logical channels are constructed, and data packets with cross-protocol channels and high business collaboration degrees are mapped to the same logical topology path. When the dual-protocol logical channels are congested, the cross-protocol flow control coupling channel distribution weight is distributed, and protocol transparent switching is performed on the data flow on the corresponding logical topology path. The migrated data packets after adaptive packaging are transmitted to target intelligent agent nodes. The application can improve the efficiency of intelligent agent data interaction.

The embodiment of the invention provides a communication method and device and a storage medium, and is applied to the technical field of Wi-Fi communication. In the method, a first station sequentially sends at least one first PPDU to a second station, the at least one first PPDU is a PPDU in a plurality of PPDUs, and data borne by the plurality of PPDUs are the same; the first station receives a first signal sent by the second station, the first signal indicates that at least one second PPDU is not needed, and the at least one second PPDU is a PPDU of which the sending moment is later than the receiving moment of the first signal in the plurality of PPDUs; and the first station cancels the transmission of the at least one second PPDU. When the second station can acquire the data from the at least one first PPDU, the first station can be instructed not to continue to send the at least one second PPDU, thereby not only improving the transmission reliability of the communication system, but also avoiding resource waste.

The invention provides a frequency alignment method, which relates to the technical field of wireless communication, is executed by a second communication device, and comprises the following steps: receiving N first signal frames from a first communication device; determining a frequency pre-correction value according to the N first signal frames, wherein the frequency pre-correction value is used for aligning the frequency with the first communication equipment; and sending a second signal frame which needs to be aligned with the first communication equipment in frequency based on the frequency pre-correction value. The first signal frame may include signal frames of different stages, including but not limited to null packet announcement frames, non-null packet announcement frames, Co-BF trigger frames, non-Co-BF trigger frames, Co-SR trigger frames, non-Co-SR trigger frames, etc. According to the invention, multiple estimation and comprehensive processing are carried out by using multiple signal frames, the problem that single estimation is easily influenced by interference is effectively overcome, and the precision and robustness of frequency alignment are remarkably improved, so that the performance of multi-access-point cooperative beam forming, multi-access-point cooperative spatial multiplexing and STA uplink transmission scenes is ensured.