472 results about "Modulation coding" 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 task load scheduling optimization method and system for distributed network nodes, and the method comprises the steps: determining a task transmission path between the distributed network nodes according to historical task congestion data and a real-time link load prediction result; adjusting a modulation coding strategy in a task transmission process according to the channel quality parameter on the task transmission path to obtain an adjusted modulation coding strategy; according to an energy consumption demand corresponding to the adjusted modulation coding strategy, combining load distribution of each communication link and each node on the task transmission path to generate a voltage frequency adjustment instruction corresponding to the distributed network node; performing collaborative optimization on the task transmission path, the channel quality parameter and the voltage frequency regulation instruction to generate a task load scheduling strategy; according to the invention, through collaborative optimization of dynamic path selection, adaptive modulation coding adjustment and precise energy consumption regulation, the transmission reliability, energy efficiency balance and system stability of the distributed network in a high dynamic environment are improved.

The invention overcomes the constraints imposed by conventional wireless communication standards by introducing a physical-layer optimized architecture that decouples transmission control from any single protocol. Rather than being confined by the predefined behaviors of LTE, 5G NR, Wi-Fi, or NB-IoT, the system implements a unified control system that dynamically manages radio parameters—such as modulation, coding, and power—based on real-time link quality and network context. This cross-standard, multimode capability effectively supersedes traditional standard-driven implementations, enabling adaptive, low-latency, and spectrum-efficient communication in complex heterogeneous environments.The system dynamically controls radio access network (RAN) and physical layer parameters, including carrier aggregation, dynamic spectrum allocation, modulation and coding scheme (MCS) adaptation, beamforming configuration, channel coding, transmit power control, and frequency selection. The system architecture includes multi-mode base stations, relay nodes, and edge access points that support inter-RAT handover, fast radio link recovery, and seamless mobility across diverse wireless technologies.

Systems, methods, and instrumentalities are described herein regarding power control and link adaptation for cross-division duplex (XDD). A wireless transmit / receive unit (WTRU) may receive a grant associated with transmission of an uplink (UL) signal. The grant may indicate a first set of resource blocks (RBs). The WTRU may determine a frequency gap (FG) between the first set of RBs and a reference RB. The WTRU may adjust one or more transmit (Tx) parameters based on the determined FG. When the determined FG is less than a pre-defined threshold, the WTRU may reduce one or more of a transmit power or a modulation coding scheme (MCS) level associated with transmission of the UL signal scheduled by the grant. The WTRU may transmit the UL signal using the adjusted one or more Tx parameters.

The invention discloses an adaptive modulation anti-multipath unmanned aerial vehicle swarm communication method and system based on MIMO-OFDM, and relates to the technical field of wireless communication, and the method comprises the steps: receiving a down-conversion baseband; synchronization and compensation are carried out; removing a cyclic prefix and carrying out fast Fourier transform; estimating a channel and noise on the training and pilot frequency, and correcting a common phase; performing frequency domain equalization and soft decision, forward error correction and cyclic redundancy check according to the estimation to obtain a control parameter, decoding a payload according to the control parameter, and performing statistics to form a link quality indication; modulating coding, bandwidth and spatial mode, configuring mapping, power and weight, and packaging physical layer protocol data; carrier sensing conflict avoiding sending, confirmation and retry are adopted to generate media access statistics; and the routing selects the next-hop multi-hop forwarding according to the transmission quality, and performs end-to-end statistics and recharge. Through cooperation of hierarchical synchronization and phase correction with cyclic prefix and FFT, crosstalk is suppressed, channel noise scale optimization soft decision is robust, data decoupling is controlled, and end-to-end availability is improved through multi-hop self-healing recharge.

The invention relates to an intelligent power grid communication optimization method based on HPLC and HRF dual-mode communication, and the method is characterized in that the method comprises the following steps: S1, obtaining power grid communication data, and carrying out the preprocessing of the data; s2, according to the preprocessed intelligent power grid communication data, a feature extractor based on a deep neural network automatically extracts two-channel time-frequency domain features, feature importance of different modes is dynamically weighted through an attention mechanism, and a unified channel state matrix CSM after fusion is obtained; s3, constructing a routing strategy model based on reinforcement learning, and obtaining an optimal path decision according to the CSM matrix, the power grid network topology and the service priority label; s4, according to the path obtained by the optimal path decision, adaptive modulation coding is adopted to obtain an optimal modulation coding scheme and a dynamic adaptive channel condition; and S5, performing communication according to the optimal modulation coding scheme and the dynamic adaptive channel condition. According to the method, the communication state sensing capability in a complex scene is remarkably improved.

The invention discloses a data processing chip based on a heterogeneous computing architecture, and relates to the technical field. The data processing chip based on the heterogeneous computing architecture comprises a data processing unit for receiving and preprocessing data to be transmitted; the clustering compression engine is used for carrying out clustering compression processing on the preprocessed data to be transmitted; the modulation and coding control unit is used for carrying out modulation and coding processing on the data to be transmitted after clustering compression processing; the redundant coding unit is used for carrying out redundant coding processing on the modulated and coded data to be transmitted; and outputting the to-be-transmitted data subjected to redundant coding processing to a protocol stack and interface unit of external equipment according to a set communication protocol. Through collaborative design of a clustering compression engine in a chip and a modulation coding control unit, clustering compression aiming at data structure characteristics and modulation strategy matching in a dynamic channel state are realized; the problems of fixed compression and modulation modes and lack of cooperation in the prior art are solved.

The invention relates to a satellite link dynamic regulation and control device and method. The device comprises an upper-layer strategy scheduler, a middle-layer predictor and a lower-layer real-time controller. And the upper-layer strategy scheduler obtains a link state prediction result output by the middle-layer predictor and a current link state reported by the lower-layer real-time controller, selects an initial strategy, a dynamic regulation and control strategy or a conventional communication recovery strategy according to task requirements, and issues a link parameter configuration instruction. And a middle-layer predictor performs link state prediction by using a pre-trained random forest model based on an input feature set extracted in a historical sliding window. And the lower-layer real-time controller executes transmission power and modulation coding scheme adjustment according to the instruction, executes emergency regulation and control when the link margin is abnormal, and gradually adjusts to a conventional communication mode after the link is recovered. According to the invention, dynamic prediction and rapid adaptive regulation and control of the satellite link can be realized.

The invention relates to the technical field of low earth orbit satellites, and discloses a method and equipment for improving the signal-to-noise ratio of a low earth orbit satellite signal, and the method comprises the steps: carrying out the multi-dimensional signal collection and processing of a received signal of a low earth orbit satellite downlink, and obtaining a signal tensor model; executing structured decomposition based on the signal tensor model to obtain a channel factor matrix group; performing multi-stage sequential processing according to the channel factor matrix group to obtain low-orbit satellite channel state information; inputting the low-orbit satellite channel state information into an interference identification module for feature extraction and interference type analysis to obtain an interference type and probability distribution thereof; performing multi-dimensional adaptive filtering on the received signal to obtain a target signal; and performing modulation coding and beam forming parameter joint optimization on the target signal and the low-earth-orbit satellite channel state information to obtain a low-earth-orbit satellite communication link, thereby solving the problem of large fluctuation of the signal-to-noise ratio in a satellite rapid moving scene, and realizing balance of power efficiency and anti-interference performance at the same time.

The invention belongs to the technical field of communication, and particularly relates to an efficient dynamic network adaptation method based on a 5G RedCap module, and the method comprises the steps: 1, obtaining and defining a 5G RedCap module parameter, a modulation coding mode parameter, a transmission parameter and a queue parameter; 2, according to the 5G RedCap module parameters, the modulation and coding mode parameters, the transmission parameters and the queue parameters obtained and defined in the step 1, multi-target multi-constraint dynamic optimization is carried out on resource block allocation, transmitting power and modulation and coding mode indexes of each 5G RedCap module; and 3, constructing a Lagrange function, setting an optimality criterion by means of a KKT condition, solving the multi-target multi-constraint dynamic optimization problem in the step 2, and carrying out dynamic network adaptation according to a result obtained after solving. The method is used for realizing optimal balance among low power consumption, high throughput and low time delay.

A method for transmitting downlink control information (DCI) includes: transmitting DCI based on modulation coding strategy (MCS) corresponding to user equipment (UE); in which the DCI includes a first-type DCI or a second-type DCI, the first-type DCI includes a first MCS field and a first repeating number indication field; and the second-type DCI includes a second MCS field and a second repeating number indication field.

Embodiments of this application provide a communication method and apparatus, and a storage medium. A terminal device receives first information from a network device, where the first information includes configuration information of an mth hybrid automatic repeat request (HARQ) process; determines, based on a quantity that is of time units of a downlink time domain resource and that is determined from the configuration information and / or based on modulation and coding scheme (MCS) index in the configuration information, whether the mth HARQ process of M HARQ processes between the terminal device and the network device is enabled or disabled, where the mth HARQ process is configured as a dynamically adjustable HARQ process; and performs communication based on a result of the determining. Flexibility of scheduling a HARQ process is improved, and a scheduling delay is reduced.

The invention relates to the technical field of optical fiber sensing, in particular to an optical fiber temperature measurement method and system, and the method comprises the steps: injecting a multi-scale dynamic modulation coding laser signal into a to-be-measured optical fiber and a reference optical fiber respectively, collecting two paths of optical signals, and generating frequency domain data containing modulation coding characteristics through fast Fourier transform; constructing a virtual reference channel, fusing pre-stored historical data through digital matched filtering and self-organizing mapping, and realizing stable output of a reference signal; adaptive calibration is performed on data to be measured by using extended Kalman filtering in combination with fuzzy logic, and calibrated phase data accurately reflecting temperature change is output; and finally, outputting high-precision temperature distribution data based on the temperature inversion model and multi-dimensional correlation analysis. The temperature measurement precision and the system robustness are remarkably improved, and the method is suitable for the fields of industrial and environmental monitoring and the like.

The invention discloses a data reading method and system based on an RFID reader-writer, particularly relates to the technical field of radio frequency identification data acquisition, and is used for solving the problem that the communication reliability of an existing RFID system is reduced due to carrier frequency deviation and multipath interference in a high-speed mobile environment. A phase change characteristic and an error rate index are obtained through double-antenna receiving signal analysis, when the error rate exceeds a limit, spatial correlation and error rate distribution difference are jointly analyzed to determine a multipath interference level, and meanwhile, a relative motion state is detected and judged through a phase track curvature characteristic. And dynamically selecting an optimal modulation coding mode to read data again according to the calculated motion speed estimated value and the interference level, thereby realizing the optimal balance between the communication rate and the reliability in the mobile environment.

The invention belongs to the technical field of vehicle-mounted communication, and relates to a transmitting end and a receiving end of a vehicle-mounted communication system, the vehicle-mounted communication system and a method. A multi-antenna base station constructs a mapping relation between index bits and a reflection array element group and between the index bits and a transmission array element group by using a generalized spatial modulation technology, modulates the index bits and information bits to obtain target to-be-transmitted signals, and transmits the target to-be-transmitted signals and carrier signals; the omnidirectional intelligent metasurface transmits a target signal to be transmitted to the demodulator, and carries out modulation coding on a carrier signal based on a reflection phase offset control signal and a transmission phase offset control signal generated by the controller. A reflection signal matrix and a transmission signal matrix are generated and transmitted; a demodulator demodulates a target signal to be transmitted to obtain index bits and information bits; the controller divides a plurality of array element groups of the omnidirectional intelligent metasurface into a reflective array element group set and a transmission array element group set based on the index bits, and generates a reflective phase offset control signal and a transmission phase offset control signal based on the information bits.

A user equipment (UE) can include processing circuitry configured to decode downlink control information (DCI) from a base station, the DCI including a modulation coding scheme (MCS) index and physical uplink shared channel (PUSCH) allocation. A demodulation reference signal (DMRS) is encoded for transmission to the base station within a plurality of DMRS symbols based on the PUSCH allocation. A phase tracking reference signal (PT-RS) time domain density is determined based on the MCS index and a number count of the DM-RS symbols for the DM-RS transmission. The PTRS is encoded for transmission using a plurality of PT-RS symbols based on the determined time domain density. The plurality of symbols includes one or both of front-loaded DM-RS symbols and additional DM-RS symbols.

The embodiment of the invention discloses a WiFi data sending method and device, a storage medium and WiFi equipment, and relates to the field of wireless communication. The method provided by the invention comprises the following steps: when a data frame to be sent exists, the equipment firstly executes CCA to judge that a channel is idle, and obtains an initial MCS serial number; a test frame is sent based on the MCS, and if an ACK frame is received within a preset duration, channel reservation succeeds; if the MCS sequence number is not received, reducing the MCS sequence number according to a preset rule and rebooking until success or reducing the MCS sequence number to the minimum value; and finally, calculating the total time length of the data frame according to the successfully reserved MCS serial number, and completing the transmission of the data frame in the total time length by using a corresponding modulation coding scheme. By dynamically adapting the MCS serial number, the channel utilization rate and the transmission reliability are improved.

The invention relates to the technical field of fingerprint identification, in particular to a wireless communication system and communication method of a fingerprint machine. The method comprises the following steps: collecting a fingerprint original data matrix through a capacitive fingerprint sensor, and carrying out fingerprint data preprocessing to obtain a fingerprint optimization feature vector; performing AES-GCM encryption on the fingerprint optimization feature vector by using the server side and the equipment side to generate primary encrypted feature data; therefore, through multi-level fingerprint feature optimization and encryption processing, based on a channel quality self-adaptive modulation coding and layered compression transmission technology, and a full-flow decryption discrimination and performance evaluation mechanism, the security and reliability of the system are improved, and the security and reliability of the system are improved. The problems that in a traditional fingerprint recognition system, data security is insufficient, transmission efficiency is low, and authentication accuracy is difficult to guarantee are solved, the security, reliability and communication transmission efficiency of the fingerprint recognition system are improved, and efficient protection and stable verification of biological recognition data are achieved.

The invention discloses a data transmission method and system, electronic equipment and a storage medium, and belongs to the technical field of network communication. The data transmission method comprises the following steps: receiving a data transmission request, and determining the data volume of a target data packet corresponding to the data transmission request; if the data volume of the target data packet is greater than a preset data volume, determining a first modulation coding strategy according to a network congestion condition and the signal strength of opposite-end equipment, and transmitting the target data packet to the opposite-end equipment according to the first modulation coding strategy; if the data volume of the target data packet is smaller than or equal to the preset data volume, transmitting the target data packet to the opposite-end equipment according to the second modulation coding strategy; wherein the second modulation and coding strategy is a modulation and coding strategy enabling the data transmission rate to be lower than a preset rate. According to the invention, the data transmission rate can be accurately adjusted, and the network performance of the wireless router is improved.

An optical line terminal (OLT) in flexible passive optical network (PON) transmits a downstream signal with two or more modulation formats, wherein at least one of the modulation formats is a modified PAMx modulation format and wherein x is greater than 2. The modified PAMx modulation encodes data bits such that the probability of at least one predetermined transition between amplitude levels is modified. Furthermore, an optical network unit (ONU) in the flexible PON is assigned to one of the plurality of modulation formats based on one or more parameters, such as configuration of the ONU and line conditions.

The invention discloses an adaptive modulation coding method and system based on fuzzy logic, and belongs to the field of wireless communication, and the system comprises a dynamic window module which dynamically adjusts the window size of a fuzzy set according to the received signal strength indication and the change trend of the packet reception rate; the input fuzzification module takes the actual received signal strength indication and the packet reception rate as input and converts the actual received signal strength indication and the packet reception rate into fuzzy variables through fuzzification processing; the fuzzy reasoning module is used for defining different membership functions, mapping continuous received signal strength indications and packet reception rate measurement values into a fuzzy set, considering membership value combinations of all RSSI and PRR fuzzy categories, calculating a weighted total score and outputting a fuzzy decision value; and the defuzzification module is used for converting into an actual modulation coding selection scheme through a defuzzification process. By adopting the method and the system, the adaptability and the response speed of the system to complex and changeable channel conditions are improved, and the accuracy and the reliability of adaptive modulation coding selection are improved.

The invention discloses an optimization method and device of a satellite communication channel, terminal equipment and a storage medium, and belongs to the technical field of satellite communication, and the method comprises the steps: through a channel state prediction model, according to a first channel state parameter of the satellite communication channel at a current moment and second channel state parameters of a plurality of historical moments, carrying out the optimization of the satellite communication channel; and identifying the change trend of the satellite communication channel, and predicting the predicted channel state parameter of the satellite communication channel at the next moment. According to the first channel state parameter and the predicted channel state parameter, when it is judged that a fluctuation risk exists in a satellite communication channel, a target modulation coding scheme is generated; and finally, switching the modulation coding mechanism of the satellite communication system according to the target modulation coding scheme, thereby realizing real-time optimization of the satellite communication channel, and solving the problems that the modulation coding mechanism of the satellite communication system is lagged in adjustment and the satellite communication quality is difficult to guarantee.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network entity may encode first information using keying modulation. The first network entity may encode second information using frequency modulated continuous waveform (FMCW) modulation. The first network entity may transmit a communication that includes a first layer indicating the first information and a second layer indicating the second information. Numerous other aspects are described.

The invention discloses a communication resource optimization method and system based on multi-source emotion perception, and aims to solve the problem that emotion analysis and communication resource allocation are disjointed in the prior art. The method comprises three core modules: a music emotion analysis module, a multi-source emotion perception module and an emotion-channel mapping engine module. The method comprises the following steps: firstly, constructing a music emotion vector by extracting a Mel-frequency cepstral coefficient, a rhythm characteristic and a timbre characteristic of a music signal; secondly, fusing the user voice fundamental frequency contour and the micro-expression dynamic characteristics to generate a user emotion vector; and finally, constructing an emotion-channel mapping engine based on deep reinforcement learning (DRL), and realizing dynamic optimization of a modulation coding scheme by defining a joint state space and designing a third-order reward function. According to the method, the emotion satisfaction degree is creatively used as a core index of resource allocation, the problem of emotion perception deficiency in traditional communication optimization is solved, and the user experience and the network resource utilization rate are remarkably improved.

The embodiment of the invention provides an adaptive modulation and coding method and device, and a storage medium, and the method comprises the steps: obtaining the initial probability distribution of a signal to interference and noise ratio (SINR) of a wireless channel, carrying out the resource scheduling according to the initial probability distribution, and obtaining the HARQ feedback; and updating the initial probability distribution according to HARQ feedback to obtain real-time probability distribution so as to realize adaptive modulation coding. According to the method and the device, the problem of waste of channel measurement resources during adaptive modulation and coding in the prior art is solved, and the effect of saving the waste of the channel measurement resources is achieved.

A spatial adaptive multi-user service modulation and demodulation method suitable for various channel environments is characterized in that an uplink channel is configured with multiple paths of general carriers and multiple paths of helicopter special carriers in a frequency division mode, and the general carriers support uplink adaptive information transmission of terminals of various types and sizes in an MF-TDMA (Multimedia Frequency-Time Division Multiple Access) system; the on-satellite demodulator obtains a modulation coding mode of a burst data segment by identifying mode word information in a physical layer frame header, and demodulates a corresponding mode; the carrier special for the helicopter uses a continuous carrier mode, and multi-rate channel error correction coding and decoding under rotor wing shielding are supported in a channel interleaving mode. Downlink transmission is carried out in a fixed time slot and free time slot time division mode, and downlink information transmission for universal multi-type terminals and helicopter terminals can be supported at the same time. Compared with a common spatial modulation and demodulation method, the modulation and demodulation scheme provided by the invention can support adaptive transmission of general services of multiple types of terminals and helicopter service information on both an uplink and a downlink by using one satellite-borne modem.

The invention relates to a space-based infrared staring imaging system based on detector multiplexing sub-view field modulation coding, and relates to the technical field of modulation coding, detector multiplexing and space-based infrared staring imaging systems. The system comprises a front lens group, a sub-view-field modulation coding element, a rear lens group and a detector multiplexing assembly which are sequentially arranged along a light incidence direction. According to the space-based infrared staring imaging system based on detector multiplexing sub-view-field modulation coding, the function integrated design of detector multiplexing and sub-view-field modulation is achieved, and the problems that a traditional space-based infrared early warning system is large in weight, large in size, high in cost, high in requirement for the detector manufacturing process and the like are solved; and a lightweight architecture form is provided for realizing large-view-field real-time staring imaging by a single spatial load.

A sensing measurement method is performed by an access point device, and includes: determining a first message frame, wherein the first message frame includes a station information field, the station information field includes a first sub-field, and the first sub-field indicates an uplink modulation and coding scheme (UL MCS) used by a station device, in feeding back a second message frame, that receives the first message frame; and sending the first message frame.

The invention belongs to the technical field of emergency communication, and discloses an emergency communication method and system integrating a satellite network and a ground base station network. The method comprises the following steps: acquiring satellite data and ground data; performing spectrum allocation through federated learning; positioning blind area coordinates and surviving base station coordinates according to satellite data, and adjusting the beam direction and width in combination with an MIMO technology; selecting a surviving base station as a relay base station; acquiring a channel state, and dynamically adapting modulation coding through a dynamic switching strategy according to a spectrum allocation result and a beam gain value; constructing a comprehensive link weight model according to the ground data, the spectrum allocation result and the link delay of the dynamic switching strategy, and generating an optimal path by using an improved Dijkstra algorithm; power is supplied to the relay base station through a hybrid power supply strategy; according to the invention, the rapid self-healing capability of a communication network to node failure and link interruption and the service transmission reliability can be obviously improved.

A modulation and coding scheme indication method and a corresponding apparatus in a wireless local area network system that supports one or more of a next-generation Wi-Fi protocol of IEEE 802.11ax (for example, 802.11be, Wi-Fi 7, or EHT), a next-generation Wi-Fi protocol of IEEE 802.11be (for example, 802.11bn, Wi-Fi 8, or UHR), Wi-Fi AI, a millimeter wave (mm Wave), an ultra wideband (UWB), and sensing (sensing). A method includes: generating a physical layer protocol data unit PPDU, where the PPDU includes a first field and a second field, the first field indicates a first modulation and coding scheme MCS group, and the second field indicates a number of spatial streams corresponding to one or more MCSs in the first MCS group; and sending the PPDU. This can reduce bit overheads.