474results about "Error prevention/detection by diversity reception" patented technology

The invention provides a TOF (Time of Flight) estimation method of a matrix bundle based on partitioning and random SVD (Singular Value Decomposition). The method comprises the following steps: firstly, acquiring channel state information (CSI) by using a commercial WiFi device, and constructing a CSI matrix; and secondly, performing block overlapping processing on the CSI matrix, constructing an augmented matrix for each CSI data block, and performing SVD decomposition on the augmented matrix, thereby reducing the calculation complexity of SVD decomposition. And then, the time of flight (TOF) of each CSI data block is estimated by using a matrix pencil algorithm, and the minimum TOF is direct path estimation. According to the method designed by the invention, the robustness of the system and the estimation precision of the TOF are improved under the condition that the algorithm complexity is greatly reduced.

The invention provides an unmanned aerial vehicle cluster polarization-space-time coding anti-interference communication system based on dynamic topology reconstruction, and the system integrates five functional subsystems, namely an environment perception subsystem, a topology reconstruction subsystem, a polarization regulation and control subsystem, a space-time coding subsystem and a resource scheduling subsystem, and carries out the unified coordination through a decision control center based on a multi-objective optimization algorithm. And closed-loop adaptive control is formed. The system can accurately sense interference source information, channel state and cluster dynamic state in real time; according to a sensing result and a task demand, dynamically optimizing and adjusting a communication topological structure of the cluster, and actively avoiding a strong interference area; meanwhile, the polarization state of the signal is adaptively selected and controlled so as to match a channel and suppress interference; and a reconfigurable space-time coding scheme is adopted, and coding parameters are flexibly adjusted to adapt to changing channel and interference conditions. And the communication anti-interference capability, the data transmission reliability and the energy utilization efficiency of the unmanned aerial vehicle cluster in a complex electromagnetic environment are obviously enhanced.

A transmission method intended for an OMAMRC telecommunication system with M sources (s1, . . . , sM), possibly L relays and one destination, M≥2, L≥0. In such a solution, when a source could not be decoded by the destination, the latter organises a retransmission by taking into account the characteristics of a MIMO transmission channel established between, on the one hand, at least two nodes that decoded the source and, on the other hand, at least two antennas in reception of the destination in the form of a precoding coefficient. Thus, the method therefore makes it possible to improve the decoding performance of a source si, in a context where the destination is equipped with a plurality of antennas in reception.

The application discloses a kind of method for determining channel parameter, device, equipment and storage medium, the method includes: based on data sending end, the target transmission power of monitoring bandwidth is determined;The data sending end detects the state information of data receiving end, then the data sending end determines the bandwidth to be selected matched with the data receiving end, and obtains the target SNR of each the bandwidth to be selected;The data sending end obtains the reference MCS set of each the bandwidth to be selected based on the target SNR;The data sending end obtains the target throughput of each the bandwidth to be selected based on the reference MCS set;The data sending end determines the working throughput based on the target throughput of each the bandwidth to be selected, and determines working bandwidth and working rate based on the working throughput.The technical scheme of the application can determine the working bandwidth and corresponding working rate that obtain the maximum throughput.

A communication method and apparatus. A terminal device determines channel state information based on S indexes of S vectors. Each of the S vectors is included in a first vector quantization dictionary. The first vector quantization dictionary includes N1 vectors, where N1 and S are both positive integers. The terminal device sends the channel state information to a network device. Because a vector included in the vector quantization dictionary usually has a relatively large dimension, quantizing channel information by using the first vector quantization dictionary is equivalent to performing dimension expansion on the channel information or maintaining a relatively high dimension. High-precision feedback is implemented by using relatively low signaling overheads.

The invention relates to the technical field of indoor positioning, in particular to a millimeter wave CSI (Channel State Information) indoor positioning method and system based on a generative adversarial network, and millimeter waves are large in bandwidth, narrow in beam, high in time resolution and space angle resolution and capable of reducing the influence of a multipath effect. Position estimation is directly obtained from CSI data directly obtained in the millimeter wave communication process, complex signal processing and filtering steps of obtaining other parameters from CSI are avoided, and the system calculation complexity is greatly reduced. The information of the AP position is extracted from the high-dimensional observation vector by using the generative adversarial network, so that complex positioning algorithms such as Kalman filtering or graph optimization are avoided, and the calculation complexity is reduced; according to the method, AP position estimation is obtained through confrontation training of the generator and the discriminator, position coordinates of reference points do not need to serve as labels, input data are all label-free data, dependence on marked data is avoided, and prior knowledge such as the AP or the reference points is not needed.

Systems and methods related to prioritization of non-zero coefficients for Channel State Information (CSI) for Coherent Joint Transmission (CJT) are disclosed. Embodiments of a UE and corresponding embodiments of a method performed by a UE for CJT CSI feedback in which non-zero coefficients of a precoding matrix indicator (PMI) feedback are prioritized are disclosed. Embodiment of a network node and corresponding embodiment of a method performed by a network node for CJT CSI feedback in which non-zero coefficients of a PMI feedback are prioritized are also disclosed.

The invention discloses a channel state information prediction method and device based on a large language model, and the method comprises the steps: obtaining and preprocessing a historical channel state information (CSI) sequence, and obtaining a CSI time feature; through a cross attention mechanism, embedding the CSI time features (as queries) and pre-training words of LLM into a dictionary (as keys and values) to carry out cross-modal semantic alignment, mapping the CSI features into a semantic space of the LLM, and fusing the CSI features with original features to generate fused channel features; and finally, inputting the fused features into LLM for inference, and generating final predicted CSI through a projection layer. According to the method, a modal gap is effectively bridged, the powerful sequence modeling capability of a large language model can be fully utilized, the accuracy and generalization capability of channel prediction are remarkably improved, and an effective technical approach is provided for overcoming the channel aging problem in wireless communication.

The invention relates to the technical field of communication, in particular to a transmission layer ultra-low delay congestion control method assisted by physical layer information. The core of the method is as follows: a sending end continuously acquires physical layer channel quality information and predicts a future channel capacity change trend based on historical and current information sequences; and then, dynamically calculating and smoothly adjusting the size of a transmission layer congestion window through a predefined mapping relation according to a prediction result, actively reducing the window before predicting that the channel is deteriorated, and timely increasing the window when the channel is improved. In addition, the method also comprises a fault-tolerant mechanism, and automatically switches to a traditional congestion control mode when the prediction is misaligned by monitoring the deviation between the prediction and the reality. Through cross-layer information utilization and prospective control, the method aims to effectively reduce data transmission delay and jitter and improve the capability of a network to cope with channel dynamic changes and the overall stability.

According to the communication method provided by the invention, resources used by each antenna port group in each measurement are indicated or predefined by a protocol through resource configuration information, so that K resources used by each measurement in M channel state measurements for forming K antenna port groups can be determined according to the resource configuration information. Furthermore, K * M resources for performing M times of channel state measurement on the K antenna port groups can be determined, namely, the resources used by the K antenna port groups in each time of channel state measurement in Doppler measurement are determined, so that M times of channel state measurement is performed on the K antenna port groups. Besides, the terminal equipment can also determine the shortest time in K * Z'ref or the preset longest time Zmax from the end of the measurement of the K antenna port groups to the start of reporting the CSI report, thereby not only perfecting a resource configuration scheme for the AP CSI-RS Doppler measurement of a larger port, but also determining the time from the end of the measurement of the large port to the start of reporting the CSI report.

The invention discloses a single-channel received RIS direction of arrival estimation method, and relates to the technical field of wireless sensing, and the method comprises the steps: mapping a space-time coding matrix into a control signal, and loading the control signal to periodically arranged electromagnetic units of an RIS, thereby carrying out the space-time coding modulation of an incident signal, and forming a reflection signal comprising angle information; receiving the reflected signal by a single-channel receiving end and converting the reflected signal into baseband data, performing Fourier transform on the baseband data to obtain a frequency domain component, and constructing a plurality of virtual receiving channels; and constructing a covariance matrix based on the signal of the virtual receiving channel, performing eigenvalue decomposition on the covariance matrix, constructing a spatial spectrum function, and performing peak search on the spatial spectrum function to obtain the direction of arrival of the incident signal. The invention further discloses a single-channel receiving RIS direction of arrival estimation system, high-precision direction of arrival estimation under the single-channel receiving condition is achieved, and the system has the advantages of being simple in system structure, low in hardware cost, high in algorithm resolution and high in anti-noise capacity.

This application proposes an information transmission method, device, and storage medium. The information transmission method applied to a first communication node includes: determining priority values ​​for L CSI reports; wherein the L CSI reports include L1 first-type CSI reports and L2 second-type CSI reports; L, L1, and L2 are all integers, and L1 is greater than or equal to 0, L2 is greater than 0, and L = L1 + L2; and transmitting information from at least one CSI report among the L CSI reports according to the priority values.

Systems and methods for de-interleaving a data of a plurality of Resource Element Groups (REGs) and construct one or more control channel elements (CCEs) in accordance with a CCE to REG mapping include performing operations comprising: obtaining a CCE-to-REG mapping comprising a mapping parameter value for each of one or more mapping parameters; obtaining an interleaved data transmission specifying a Control Resource Set (CORESET); selecting a first CCE, of a set of CCEs, for assembly; for the first CCE: assigning a REG bundle of the interleaved data transmission to the first CCE based on an index value of the REG bundle and the mapping parameter value; extracting the REG bundle of the index value to a memory; and combining the extracted REG bundle with any existing extracted REG bundles to generate an assembled CCE in the memory.

Apparatuses, methods, and systems are disclosed for calculating an EVM of a transmitter. One apparatus includes a processor and a receiver that receives a multiple-layer MIMO signal from a transmitter via a propagation channel. The processor measures the received multiple-layer MIMO signal using an unbiased linear MMSE MIMO equalizer and calculates an EVM of the transmitter, where the EVM for each transmission layer is calculated as 100 times the square root of the mean square error of the layer estimate at the output of the unbiased linear MMSE MIMO equalizer.

This application discloses a method and apparatus for sending / receiving Null Data Packet Declaration (NDPA) frames. An Access Point (AP) sends an NDPA frame, in which first indication information in its probe session token indicates whether the NDPA frame is an EHT probe or an HE probe. The first bit of its first site information field includes second indication information, indicating whether the first site information field corresponds to an EHT site or an HE site. The Station Target (STA) identifies the EHT site corresponding to the first site information field based on the first and second indication information, and performs EHT probing to obtain the N... c The application provides an NDPA frame structure that enables the STA to accurately identify the NDPA frame as an EHT probe and perform EHT probes. This information is then fed back to the AP.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, via time-frequency resources using multiple spatial layers, a plurality of code block parts associated with a codeword, where code block parts corresponding to the same code blocks are each offset in different time-frequency resources, where one or more first code block parts are initializing code block parts associated with first decoding characteristics that are different than second decoding characteristics with which one or more second code block parts are associated. The UE may decode, based on the first decoding characteristics and the second decoding characteristics, the one or more first code block parts and the one or more second code block parts.

A transmission method for an OMAMRC telecommunication system with M sources (s1, i . . . , sM), optionally L relays and a destination, where M≥2, L≥0. In the method, when a source has not been able to be decoded by the destination, the destination determines an active set of nodes from among all the nodes of the system that have decoded the source, and then organizes a simultaneous retransmission, via the active set, of a message transmitted by the destination.

A device for avoiding interference. The device comprising: at least one transceiver; at least one memory; and at least one processor, in signal communication with the at least one transceiver, and the at least one memory, the at least one processor configured to: transmit, with the at least one transceiver, a ranging control message (RCM) to schedule a ranging session with a second device, where the ranging session includes a plurality of consecutive ranging blocks, each ranging block includes a plurality of ranging rounds, each ranging round includes a plurality of ranging slots, and the schedule includes a channel hopping pattern for the plurality of ranging slots; transmit a ranging initiation message (RIM) on a first ranging slot; and retransmit the RIM on a second ranging slot, different from the first ranging slot, baes on the channel hopping pattern.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure discloses a method and an apparatus for error correction coding in a communication system, more specifically, to error correction coding integrated with transmission diversity.

The invention relates to the technical field of spacecraft satellite-ground communication, and provides a low-earth-orbit satellite communication time delay optimization method and system aiming at the defects that a traditional low-earth-orbit satellite communication satellite system and a satellite communication frame have high time delay and poor real-time communication function. The core of the invention comprises three parts: firstly, an efficient receiving and transmitting end coding and decoding technology: a transmitting end adopts a subblock coding technology of a Turbo code; and a receiving end uses an MAX-Log-MAP algorithm to carry out rapid iterative decoding on the word block code of the Turbo code. And secondly, compressing the user data: carrying out lossless compression on the user data and a satellite communication frame header by using Huffman coding, reducing the transmission data volume, improving the data processing speed, and thus reducing the processing time delay. And finally, simplifying the frame header design: optimizing the frame header of the communication frame so as to reduce the total length of each frame. The method is particularly suitable for communication satellites (the orbit height is less than or equal to 1500km) in a low earth orbit.

A wireless transmit / receive unit (WTRU) may include a processor that is configured to receive configuration information indicating a plurality of sub-bands for cross-link interference (CLI) measurements and respective resources for performing CLI measurements for each of the plurality of sub-bands. The processor may receive a downlink control information (DCI) indicating resources associated with a first reference sub-band. The processor may perform a CLI measurement for the first reference sub-band using one or more resources for performing CLI measurements for the first sub-band. The processor may perform a CLI measurement for at least one other sub-band of the plurality of sub-bands using the respective resources for CLI measurements of the at least one other sub-band based on determining that the CLI measurement for the first sub-band is greater than a threshold. The processor may send an indication that the CLI measurement for the sub-band is greater than the threshold.

Methods, systems, and devices for wireless communications are described. For example, a method for wireless communications at a user equipment (UE), may include receiving a configuration indicating a feedback transmission scheme for reporting feedback associated with an error type. The UE may also detect an error in receiving a downlink transmission from a base station, where the detected error is of the error type. Then, the UE may select the feedback transmission scheme for transmitting a negative acknowledgement message for the downlink transmission based at least in part on the detected error being of the error type and the configuration. The UE may also transmit, to the base station, the negative acknowledgement message for the downlink transmission using the selected feedback transmission scheme.

A channel state information determining method and apparatus are provided, and relate to the wireless communication field. In the method, a network device sends at least two reference signals including a first reference signal and a second reference signal, and receives first information. The first information indicates that a part or all of information in CSI corresponding to the second reference signal is determined based on the first reference signal. A sending periodicity of the first reference signal is less than a sending periodicity of the second reference signal. According to the foregoing design, the network device can be enabled to efficiently obtain the CSI.

The invention provides a passive positioning method based on a wireless fidelity (Wi-Fi) beam forming feedback information (BFI). The passive positioning method comprises the following steps of: firstly, carrying out passive positioning on the basis of the Wi-Fi beam forming feedback information (BFI); the method comprises the following steps: firstly, pre-determining the position of a transceiver, and respectively extracting BFIs of a direct path and a target reflection path of the transceiver; compared with extraction of channel state information (CSI), the BFI is inherent information in a Wi-Fi communication protocol, special acquisition hardware does not need to be additionally deployed, the BFI can be directly extracted from the communication process, the hardware cost and the deployment threshold of a positioning system are greatly reduced, and large-scale popularization and application are easier to realize. And secondly, by constructing a BFI covariance matrix, high-dimensional matrix operation in a traditional MUSIC algorithm is converted into low-dimensional matrix processing, and the calculation complexity is remarkably reduced. And finally, constructing a spectral function to respectively obtain an angle of departure (AOD) of a direct path of the transceiver and a target reflection path and a flight time difference of the two paths, substituting the parameters into the elliptic constraint model for calculation, and finally solving to obtain an estimated position of the target. According to the method designed by the invention, the real-time performance and the deployment flexibility of the system are greatly improved under the condition that the calculation complexity is remarkably reduced and the support of specific hardware is not needed.

The invention relates to an apparatus, a method and a computer program. The document relates to an apparatus comprising: means for receiving, from a base station, a channel state information reference signal, CSI-RS (t0), on at least one of a primary component carrier and a secondary component carrier; and means for transmitting, to the base station, an uncompressed or compressed common portion between channel state information for the primary component carrier and channel state information for at least one of the secondary component carriers.

The invention relates to the technical field of industrial wireless communication, in particular to a wireless network weak broadband interference resistant communication method and system based on differentiated lead codes, and the method comprises the steps that access point equipment collects the channel state information of each sub-channel, and distributes different lead code sequence configurations for each sub-channel according to the channel state; sending the configuration to the terminal equipment through the management frame; after the terminal equipment analyzes the configuration, preamble detection is executed on each sub-channel in parallel, timing synchronization is performed by using a corresponding L-STF sequence, and channel estimation is performed by using an L-LTF sequence; and screening available sub-channels according to a detection result and completing data receiving demodulation. The system correspondingly comprises a channel state information acquisition module, a lead code sequence configuration distribution module, a management frame sending and analyzing module, a lead code detection module, a sub-channel screening module and a data receiving demodulation module. According to the method, detection performance coupling between sub-channels is broken through differential sequence design, and the communication robustness in a weak broadband interference environment is improved by utilizing a dynamic negotiation and parallel detection mechanism.

Embodiments of the present application provide a data transmission method and a related device. The method comprises: acquiring uplink control information to be transmitted, wherein the uplink control information to be transmitted comprises a first channel indication and at least one of a hybrid automatic repeat request acknowledgement, a channel state information report and a scheduling request; on the basis of a multiplexing rule corresponding to the uplink control information to be transmitted, determining at least one piece of uplink control information from among the uplink control information to be transmitted and an uplink physical control channel resource for carrying the at least one piece of uplink control information, wherein the multiplexing rule comprises a multiplexing rule between the first channel indication and at least one of the hybrid automatic repeat request acknowledgement, the channel state information report and the scheduling request; and transmitting the at least one piece of uplink control information on the basis of the uplink physical control channel resource. In the embodiments of the present application, the multiplexing rule is updated, and when there is newly added type of uplink control information, the uplink control information can be transmitted on the basis of the updated multiplexing rule.

The present disclosure provides systems, methods, apparatuses, computer programs encoded on a computer readable medium for a user equipment (UE) receiving a reference signal from a first base station, performing radio resource management (RRM) measurements based on the reference signal, and transmitting information regarding the RRM measurements to a second base station. In another aspect, a UE receives a reference signal from a first base station, performs a channel quality indicator (CQI) measurement based on the reference signal, stores information on the CQI measurement, and transmits the stored information to the first base station. In another aspect, a base station receives, from a UE, information associated with CQI measurements related to a second base station, and sends the information to the second base station.

The present disclosure provides a wireless communication method and a wireless communication device. Embodiments of the present disclosure use optimized BCC interleaver and LDPC tone mapper. In one embodiment, a wireless communication method provided by the present disclosure can include processing, by a processor of a device, a plurality of tones of a resource unit to generate a distributed tone resource unit or a distributed tone multi-resource unit; and transmitting, by the processor via a transmitter of the device, the distributed tone resource unit or the distributed tone multi-resource unit to another device, wherein the processing of the plurality of tones includes encoding a plurality of information bits by low density parity check coding or binary convolutional coding, and tone mapping or interleaving the encoded result using one or more optimized parameters using a low density parity check tone mapper or a binary convolutional coding interleaver.