414results about "Adaptation strategy characterisation" patented technology

The present invention relates to the technical field of cross-modal image signal reconstruction. Disclosed is a cross-modal joint source-channel coding and decoding method adaptable to changeable scenarios. The method comprises: first designing a Transformer encoder-based cross-modal channel coding and decoding optimization solution, so as to achieve the performance improvement and robustness of a channel encoder and a channel decoder; then designing a cross-modal source coding and decoding optimization solution for haptic-to-image generation based on a latent diffusion model, so that under an image signal loss scenario, haptic information is used to guide image generation; and finally, incorporating transfer learning technology, so as to reduce additional training costs caused by a system facing changeable cross-modal communication scenarios such as a changeable channel signal-to-noise ratio and different transmission tasks. Under cross-modal changeable communication scenarios, the joint source-channel coding and decoding method provided in the present invention can solve the problems of the inability of a receiving end to well complete image reconstruction, and additional model training costs caused by changeable channel environments and scenarios.

Methods, systems, and devices for wireless communications are described. A wireless device may perform a probabilistic shaping procedure using a shaping rate that is selected in accordance with a rule associated with a target spectral efficiency value, a modulation order, or both. Similarly, the wireless device may perform a channel coding procedure whose coding rate is selected in accordance with the rule. The rule may correspond to a relationship between the coding rate and the shaping rate. In some cases, the wireless device may select the shaping rate and the coding rate to be predefined values based on a target spectral efficiency value. In some examples, the wireless device may select the shaping rate and the coding rate based on a threshold coding rate, a quantity of punctured nodes used in the channel coding procedure, a quantity of layers corresponding to a multi-layer transmission, or any combination thereof.

The invention provides a dynamic coding and decoding negotiation method based on link state quality. The dynamic coding and decoding negotiation method comprises the following steps: grouping reference station RTCM data and determining the priority of the RTCM data according to the message ID of the RTCM data; based on the determined first strategy selection mode, the RTCM data is subjected to check code generation, character coding and encryption in sequence, and the strategy selection mode of the base station is synchronized to a strategy selection module of the moving station; after the moving station receives the data, decryption, character decoding and verification are sequentially carried out on the encrypted data based on the information synchronized by the strategy selection module; meanwhile, the moving station counts the packet loss rate and the verification failure rate of the RTCM data in real time; and adjusting the strategy selection mode of the next group of data according to the quality of the current link, the system load and the priority of the RTCM data until all grouped data are sent. According to the invention, a real-time closed loop is provided, and the link quality is evaluated more comprehensively.

The invention discloses a wireless communication method, device and equipment and a readable storage medium, and belongs to the field of communication, and the method comprises the steps that first equipment obtains target output related information, the target output related information is output related information meeting a first channel condition and / or a first quality requirement, and the target output related information is output related information meeting the first channel condition and / or the first quality requirement; the first channel condition is a channel condition for transmitting a first information source, and the first quality requirement is a quality requirement of second equipment on the first information source; the first device performs coding processing on the first information source according to the target output related information to obtain first coding information; and the first device sends the first coding information to the second device.

The invention discloses a chirp interval modulation backscatter communication method and a chirp interval modulation backscatter communication system based on variable-length scrambling codes, which mainly solve the problems of high power consumption of backscatter labels and high system deployment cost in the prior art. According to the scheme, a sending end sends an environment LoRa signal; the backscattering label modulates information to be sent to an environment LoRa signal in a time interval modulation mode, and modulates a variable-length scrambling code to an anchor symbol; a receiving end performs frequency shift compensation on the backscattering signal by adopting a frequency shift compensation method, demodulates the backscattering signal by combining a sliding window with a variable-length scrambling code, intercepts a backscattering signal sample through the sliding window, and performs de-spreading and fast Fourier transform (FFT) on the signal in the window; the position of an anchor symbol is determined by detecting the maximum value of an FFT peak value, information sent by the backscattering label is recovered from the position of the anchor symbol, and data demodulation is completed. On the premise of keeping demodulation reliability, the power consumption of the tag is effectively reduced, the deployment cost of a backscatter communication system is reduced, and the method can be used for ultra-low power consumption Internet of Things communication.

The invention discloses a cross-domain information distribution method and system for multi-link cooperative networking, and relates to the technical field of network communication, and the method applied to an information sending end comprises the following steps: obtaining a link quality prediction result of each data transmission link based on the computing power level of an information receiving end and the link quality prediction result of each data transmission link; and dynamically selecting a main transmission path and at least one backup path of cross-domain information from all data transmission links. And based on the link quality of the main transmission path, performing fragmentation processing and coding processing on the to-be-distributed data to obtain a plurality of to-be-distributed data packets. And transmitting the to-be-distributed data packet to an information receiving end through the main transmission path and the backup path, so that the information receiving end decodes and recombines the to-be-distributed data packet. According to the method, the stability, the real-time performance and the resource utilization efficiency of cross-domain information distribution for multi-link cooperative networking are effectively improved, and the transmission performance of cross-domain data transmission is remarkably improved.

The invention provides a 2M non-framing double-path protection intelligent switching method and system based on redundancy check, and relates to the technical field of communication, and the method comprises the steps: obtaining double-path 2M non-framing code streams, carrying out the alignment processing, generating a check result through employing cyclic redundancy check, carrying out the statistics of error code feature vectors in a sliding time window, and constructing a link quality track. According to the method, the quality degradation early warning signal is extracted, the stage switching strategy is constructed based on the early warning signal, the switching time sequence is determined in combination with the neural network evaluator, link switching is executed, self-adaptive optimization of the switching strategy is achieved, and the intelligence and reliability of link switching are 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.

The invention relates to a digital semantic communication method combining learnable constellation mapping and channel adaptation, and belongs to the technical field of communication. According to the method, a semantic coding modulator is constructed, and the transition probability from an information source to a discrete constellation symbol is systematically learned, so that the problem that digital modulation cannot be differentiated is solved; a semantic coding process is dynamically adjusted based on a channel state information feedback mechanism of double attention, and an efficient matching relationship between semantic features and subcarriers is ensured. A neural network is designed to combine a multipath channel which cannot be trained but can be differentiated with an OFDM signal processing module, and end-to-end cross-layer joint optimization of the system is realized.

Methods and apparatuses for radio communication. The method includes transmitting first information that characterizes at least one quality associated with a downlink channel received by a radio terminal and transmitting second information that characterizes a present or future environmental situation of a physical entity that is associated with the radio terminal.

The invention discloses a self-adaptive compression and lossless fast transmission method and system for high-frequency test data. The method comprises the following steps: extracting multi-dimensional dynamic feature vectors from high-frequency test data in real time and marking feature points; based on the features, the network bandwidth and the target compression ratio, dynamically selecting a compression algorithm combination and parameters through a pre-training decision model; performing data framing and typed preprocessing according to the algorithm combination; compression is executed through a multi-stage assembly line, and a correction link based on statistical characteristics is inserted between stages; constructing a three-dimensional transmission state matrix fusing priorities, links and quality scores, dynamically allocating links and adaptively adding forward error correction codes; and after error correction and decompression of a receiving end, realizing lossless verification through multi-dimensional comparison of feature point sequences of the reconstructed data and the original data. According to the method, the whole-course self-adaption of the compression strategy and the transmission scheduling is realized, and the lossless and reliable recovery of the data is ensured while the compression and transmission efficiency is improved.

Provided are a method for determining modulation and coding scheme (MCS) mapping information and a network device. The method is performed by a terminal device and the method includes: determining MCS information of a channel based on transmission parameter information and an MCS mapping relationship, wherein the MCS mapping relationship includes at least one of a first mapping relationship and a second mapping relationship. The first mapping relationship includes MCS information corresponding to a scenario where the transmission parameter information indicates that a number of transmission layers of the channel is 1. The second mapping relationship includes MCS information corresponding to a scenario where the transmission parameter information indicates that a number of transmission layers of the channel is greater than or equal to 2. The first mapping relationship is different from the second mapping relationship.

Vehicle (100), comprising: a sending control unit (110-T) configured to send a message; a receiving control unit (110-R) configured to receive the message; one or more switches (120) configured to forward the message from the sending control unit (110-T) to the receiving control unit (110-R), wherein the sending control unit (110-T) and each of the one or more switches (120) include an output port for transmitting the message; and a processor configured to perform limited timing analysis to determine a total wait time w k during the transmission of the message from the sending control unit (110-T) to the receiving control unit (110-R) as a sum of all output port wait times w i,jto determine at all outgoing ports to which the message encounters, taking measures to avoid or mitigate the total waiting time w k during transmission a time limit for the message is exceeded, and the limited timing analysis includes performing an iterative process and determining a lower bound (LB), an upper bound (UB), and a median value.

Determining a first number of resources that are available for a first code block group, CBG, based on an index for a modulation and coding scheme, MCS. A second number of resources that are available

An example method performed by a network node may include obtaining measurement information of interference cell(s) of at least one UE and / or traffic information of the interference cell(s); adjusting a target block error rate (BLER) for a target UE in the at least one UE according to the measurement information of the interference cell(s) and / or the traffic information of the interference cell(s); and transmitting data to the target UE based on the adjusted target BLER.

The invention discloses a method for adjusting a downlink outer ring AMC in a 5G wireless system and a base station. The method comprises the following steps: acquiring a feature vector in a current decision period; inputting the feature vector in the current decision-making period into an intelligent decision-making model, and determining a target offset of a downlink outer ring AMC in the current decision-making period from a preset MCS offset value range; wherein the feature vector in the current decision period comprises a value of a physical layer parameter and a value of a throughput parameter, and the value of the physical layer parameter is determined according to CQI fed back by the UE in at least two recent TTI periods at present; and determining the value of the throughput parameter according to the size of the TB successfully transmitted by the UE in the preset throughput window at present, thereby realizing more intelligent, stable and accurate adjustment of the downlink outer ring MCS offset.

The invention belongs to the field of wireless communication, and particularly relates to a wireless signal multi-dimensional array coding method and system based on dynamic rank optimization. The method comprises the following steps: detecting state information of a wireless channel, predicting state change of the channel by using a pre-trained deep learning model, and generating a dynamic optimization multiplier; adjusting a preset static optimization multiplier by using the dynamic optimization multiplier, constructing a target function for jointly optimizing the energy efficiency and the spectrum efficiency, and determining an optimal transmission rank by solving the target function; comparing the optimal transmission rank with the current transmission rank to determine a rank-up or rank-down operation; and reconstructing a transmission signal of the wireless channel according to a result of the rank increasing or decreasing operation. According to the method, the optimization target is dynamically adjusted by predicting the channel change, and the asymmetric ascending and descending rank algorithm is adopted, so that the adaptive transmission rank optimization in a complex time-varying channel environment is realized, and the communication performance is remarkably improved.

A method of operating a modem chip may include measuring quality of a plurality of resource elements allocated to receive a codeword, allocating a maximum number of decoding iterations per code block based on a measurement result of the quality and a resource element-to-code block (RE-CB) mapping pattern corresponding to a target slot, and decoding a plurality of first code blocks of the target slot based on the allocated maximum number of decoding iterations per code block.

The invention relates to a data acquisition method, a data acquisition system and related equipment. The method comprises the following steps: in response to starting of a data acquisition task, adaptively selecting a target acquisition channel from a plurality of acquisition channels through an acquisition scheduling engine, and issuing the data acquisition task to a corresponding target terminal, so that the target terminal acquires target data through the target acquisition channel; performing credibility verification on target data returned by the target terminal through the security verification engine; and storing the target data passing the credibility verification through a data storage module. The method at least partially solves the problems of high data acquisition task failure rate, insufficient data acquisition integrity and narrow scheme application scene due to the adoption of a data acquisition system with a preset single fixed acquisition channel in a data acquisition method in related technologies.

Devices, methods and computer programs for client device operation mode indication are disclosed. A client device obtains a first indication indicating at least a time duration and at least a first period for repeating the time duration. A downlink control information, DCI, received within the indicated time duration includes a second indication indicating a second operation mode of the client device, and the second indication is not included when the DCI is received outside of the indicated time duration. In response to receiving, at the client device, the DCI from a network node device within the indicated time duration, the client device determines the second operation mode of the client device based on the received second indication, and applies the determined second operation mode of the client device.

The present application provides a method and apparatus for cross-network converged transmission based on network coding and relates to the field of communication technologies. The method initially includes selecting an encoding method based on an application type and encoding original packets to obtain a plurality of to-be-transmitted packets. A network status is obtained and a scheduling scheme is determined based on the network status. Weights of links for transmitting the plurality of to-be-transmitted packets are adjusted based on the scheduling scheme. In the present application, the encoding method is selected based on the application type such that cross-network converged transmission can be completed based on network coding. This reduces latency while improving data transmission bandwidth.

The embodiment of the invention provides a data transmission method and system and a wireless local area network communication system, and the method comprises the steps: obtaining a plurality of MPDUs to be aggregated, and writing the MPDUs into a data chain table; the data chain table comprises a plurality of transmission group nodes, adjacent transmission group nodes are connected through a node connection domain, each transmission group node comprises a plurality of transmission descriptors, the plurality of transmission descriptors are connected through a descriptor connection domain to form a one-way chain table, the one-way chain table is used for bearing the MPDU, and the descriptor connection domain of the tail transmission descriptor of the one-way chain table is empty; in response to the enabling trigger instruction, acquiring a processable current transmission group node from the data chain table, and storing an analysis result of the current transmission group node to a cache module in a metadata group form; and reading the MPDUs corresponding to all the transmission descriptors in the current transmission group node from the cache module, and carrying out aggregation transmission. By adopting the technical scheme, separation of responsibilities and cooperative work between software and hardware can be realized, and the data transmission rate is improved.

A first multiple-output (MIMO) communication method has the steps of: generating a signaling for one or more devices, and transmitting the signaling to the one or more devices; for each of the one or more devices, the signaling is for indicating a plurality of streams allocated to the device and a plurality of modulation and coding system (MCS) indices each corresponding to one of the streams. Accordingly, a second MIMO communication method has the steps of receiving a signaling from a device to obtain a plurality of streams and a plurality of MCS indices corresponding to the streams, and transmitting signals to the device using the streams with parameters of each stream defined by the corresponding MCS index. In some embodiments, the signaling is carried in a trigger frame for uplink MIMO communication, or in a physical layer protocol data unit for downlink MIMO communication.

Embodiments of this application provide a communication method and a communication apparatus. The method includes: obtaining p groups to be transmitted on a first resource, where the p groups belong to N downlink channel state information (channel state information, CSI) reports, p is an integer greater than 1, and N is an integer greater than 1; and sending a part or all of the p groups on the first resource based on priorities of the p groups, where the priorities of the p groups are based on priorities of the N CSI reports, the priority of the CSI report is based on a type of the CSI report, and a type of at least one of the N CSI reports is an artificial intelligence (artificial intelligence, AI)-related type. Solutions in embodiments of this application can implement effective transmission of a CSI report, so that a network device can obtain desirable related information in a CSI report.

A communications device is configured to transmit uplink data via a wireless access interface using configured grant (CG) resources of a physical uplink shared channel (PUSCH). The uplink data is encoded and transmitted according to either a first or a second modulation coding scheme (MCS). The first MCS or the second MCS is selected according to whether the uplink data is transmitted in the CG-PUSCH according to either a retransmission-less scheme, in which retransmission of the uplink data in response to a feedback indication is not used, or transmitted according to a retransmission scheme (e.g. HARQ), in which the uplink data can be retransmitted following receipt of an indication that the uplink data was not correctly received or an indication is received that the uplink data was received correctly (e.g. HARQ-NACK / HARQ-ACK). In some examples, the first MCS or the second MCS selected to encode and to transmit the uplink data can be identified from the transmitted uplink data based on whether the uplink data is transmitted as retransmission-less or according to whether the uplink data is transmitted with the retransmission scheme. For example, the uplink data may be transmitted in the CG-PUSCH with uplink control information (UCI) which indicates whether the uplink data is being transmitted as retransmission-less or according to the retransmission scheme and the first MCS or the second MCS selected by the communication device can be determined from this indication in the UCI implicitly or the UCI may include information which efficiently provides this indication explicitly.

The invention discloses an end-to-end sensing integrated cooperative codebook design method and system based on mutual information estimation, and aims to solve the problems that statistical characteristics of communication and sensing signals are inconsistent, and performance indexes are difficult to optimize uniformly. According to the method, communication mutual information and perception mutual information are adopted as unified optimization indexes, and a mutual information estimator based on comparative learning is constructed to respectively obtain differentiable lower bound estimation of two types of mutual information. By setting a sensing tradeoff coefficient, the weighted sum of communication and sensing mutual information is maximized in end-to-end training, and meanwhile, power constraint and phase dispersion punishment are introduced to meet actual emission requirements. And after training, enumeration is carried out to generate a joint sensing codebook, the joint sensing codebook is issued and deployed, rapid signal transmitting and receiving processing can be realized through index table lookup in an online stage, and flexible switching and performance balancing in different service modes are supported.

The application discloses a video data transmission method and device, equipment and a storage medium, and relates to the technical field of data transmission. A plurality of parameters, such as actual round-trip delay and packet loss detection duration, can directly reflect real-time network status. The compensation duration required for retransmitting a target video data packet if the target video data packet is lost under the current network status is accurately determined. Then, by comparing the size between the local cache duration fed back by a video receiving end and the packet loss compensation duration, it is determined whether the transmission strategy of retransmitting the target data packet for packet loss compensation will affect the video playing effect of the video receiving end. Then, a suitable target transmission strategy is selected from a transmission strategy set, the network service quality of a video transmission service is improved, and the video experience of a user is ensured.

A user device may receive from a network node information associated with uplink transmission of a data symbol, wherein the information includes at least one of: a set of phase shift values, or a set of scaling parameters. The user device may modify the data symbol, wherein the modifying includes modifying a subcarrier associated with the data symbol by at least one of: shifting a phase of the subcarrier by a phase shift value of the set of phase shift values or scaling an amplitude of the subcarrier by a scaling parameter of the set of scaling parameters. The user device may transmit to the network node, a modified orthogonal frequency division multiplexing symbol based on the modified data symbol.

Methods and apparatuses are provided for performing rate matching. A group common-physical downlink shared channel (GC-PDSCH) is received at a user equipment (UE) for communications in a common frequency resource (CFR). An information element that carries configurations for GC-PDSCH transmission in the CFR, is received at the UE. At least one parameter for determining a transport block size (TBS) for the GC-PDSCH transmission in the CFR is determined from at least one field of the information element. The TBS for the GC-PDSCH transmission in the CFR is determined based on the at least one parameter.