950results about "Error prevention/detection by diversity reception" patented technology

The invention discloses an unmanned aerial vehicle cluster intelligent cooperative control method, and the method comprises the steps: optimizing a network topology through heterogeneous unmanned aerial vehicle cluster dynamic networking and a dynamic clustering algorithm, and guaranteeing the reliability of a communication link; a layered hybrid decision architecture is designed to improve the task allocation rationality and the dynamic adaptability of the unmanned aerial vehicle cluster; a distributed control strategy network is trained by using a multi-agent near-end strategy optimization MA-PPO algorithm, and unmanned aerial vehicle cluster behavior collaboration is ensured in combination with space-time consistency constraint; an asynchronous incremental consensus protocol AICP is provided, the data transmission amount is reduced, and topology reconstruction is accelerated; real-time three-dimensional environment reconstruction and dynamic threat prediction are realized based on a neural radiation field NeRF technology; a lightweight anti-interference communication middleware is developed, and the instruction transmission stability is enhanced by adopting a space-time coding diversity technology. The method solves the problems of high delay of centralized control of the unmanned aerial vehicle cluster, poor convergence of a distributed algorithm and the like, and is suitable for high-dynamic task scenes such as urban street battle and complex terrain search.

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.

The invention belongs to the technical field of wireless communication, and particularly relates to a channel state information acquisition method based on a conditional generative adversarial network. The method is based on CSI fusion and a conditional generative adversarial network (GAN), and serves a large-scale MIMO scene; according to the method, firstly, CSI based on an uplink reference signal (SRS) and CSI of a downlink feedback channel are fused, a generator generates predicted CSI of another frequency band after receiving the fused CSI, and a discriminator optimizes the performance of the generator by comparing the real CSI with the generated predicted CSI, so that the prediction accuracy is improved. Experimental results show that the acquisition precision of the channel state information in the FDD system can be effectively improved, and the fusion of the SRS and the downlink feedback and the conversion of the CSI between the frequency bands are realized. The method is suitable for wireless communication, a 5G / 6G MIMO system and other application scenes needing efficient CSI transmission.

Provided are a method and apparatus for determining the number of coded modulation symbols for uplink control information (UCI) when transmitting, in a wireless communication system, the UCI via a transport block processing over multiple slots (TBoMS) PUSCH to which TBoMS has been applied. The number of coded modulation symbols for the UCI is determined on the basis of the total number of bits being transmitted via the TBoMS PUSCH, and a value obtained by multiplying the number (Z) of slots configured for the TBoMS PUSCH by the sum of the number of resource elements that can be used for the transmission of the UCI in OFDM symbols for the TBoMS PUSCH in one slot through which the UCI is transmitted, from among the multiple slots.

The invention relates to an underwater optical communication LDPC (Low Density Parity Check) coding processing method. The method comprises the following steps: determining a current channel quality grade based on a real-time communication distance and channel state information; dynamically selecting LDPC (Low Density Parity Check) coding parameters and modulation orders in combination with equipment mobile data and channel quality levels, and generating an adaptive parameter combination; performing error correction coding on the data according to the selected parameters and generating an optical communication signal; transmitting to a receiving end through an optical channel; and dynamically updating the coding parameter and the modulation order based on the feedback information of the receiving end. According to the method, the problem that a traditional fixed coding scheme is insufficient in error correction capability or wastes resources in a dynamic distance scene is solved by predicting the equipment moving trend and the channel state in real time and adaptively adjusting the coding parameters and the modulation mode, the error rate is remarkably reduced, the communication efficiency is improved, and the method is suitable for a complex and changeable underwater optical communication environment.

Apparatus, methods, and computer program products for performing operations based on TA timer expiration are provided. An example method may include receiving, from a network entity, a first TAG configuration associated with a first TRP associated with the network entity. The example method may further include receiving, from the network entity, a second TAG configuration associated with a second TRP associated with the network entity, the first TAG configuration and the second TAG configuration being associated with a BWP or a CC, the first TAG configuration being associated with a first time alignment timer and the second TAG configuration being associated with a second time alignment timer. The example method may further include performing one or more timer expiration operations for a serving cell based on at least one of the first time alignment timer or the second time alignment timer.

The invention discloses a time domain channel estimation method and device based on a multi-antenna diversity technology, and the method comprises the steps: mapping a bit stream into a symbol stream to construct a transmitting signal matrix, carrying out the STBC coding, inserting a time domain pilot signal, obtaining a matrix after insertion, selecting a vector in the matrix after insertion, and carrying out the time domain channel estimation. The method comprises the steps of obtaining a frequency domain receiving signal by combining with relevant parameters of Gaussian white noise and a Rayleigh fading channel, then performing matrix transformation to obtain an STBC decoding matrix, introducing a weight matrix to update an established MIMO-OFDM system input and output model to obtain a time domain channel estimation value, and finally performing FFT transformation on the time domain channel estimation value to obtain a frequency domain channel matrix estimation value. And substituting the frequency domain channel matrix estimation value into the STBC decoding matrix and then carrying out ML signal detection to obtain a final estimation value. A channel estimation algorithm is introduced to improve the estimation of a dynamic channel, a space-time block coding technology is combined to improve the demodulation signal precision of a MIMO system, and the full-state channel of the MIMO system is estimated.

The disclosure provides a wireless communication system, comprising at least one DCS with a surface that comprises scattering elements having a controllable phase shift, at least one transmitter configured to transmit a coded radiofrequency signal to at least one receiver during a plurality of time slots, and a controller. The controller controls the at least one transmitter, based on a space time DCS code (STDC) to generate the coded radiofrequency signal during the plurality of time slots. The controller further controls, based on the STDC, the set of scattering elements of the at least one DCS during the plurality of time slots. The STDC depends on a total number of the at least one DCS and a maximum number of the plurality of time slots Tmax.

The invention discloses a multi-path cooperative communication method, belongs to the technical field of wireless communication, and is used for solving the problems of inaccurate path selection, unreasonable power distribution and inaccurate signal combination caused by dynamic change of a channel state in multi-path communication. The method comprises the following steps: acquiring channel state information of at least three communication paths in real time through a transmitting end, wherein the channel state information comprises signal strength, frequency offset and noise power spectral density; dynamically dividing and distributing the data stream to each path based on the path quality factor, and adjusting the transmitting power by combining the signal strength and the noise difference value; a receiving end carries out time domain alignment by adopting a sliding window cross-correlation algorithm, and carries out phase compensation based on a minimum mean square error criterion; path reallocation is triggered when the continuous bit error rate exceeds a threshold. According to the method, the multi-path resource utilization rate can be optimized, and the communication stability and the data transmission efficiency are improved.

The invention provides a code modulation method and device, electronic equipment, a storage medium and a program product. The method comprises the following steps: probability constellation shaping coding is carried out on a payload bit data stream to be sent to obtain a bit data stream after shaping coding, and the bit data stream after shaping coding comprises non-equal-probability amplitude bits corresponding to orthogonal amplitude modulation constellation points and a part of equal-probability symbol bits; the bit data stream after shaping coding is recombined and adapted to be in a frame format corresponding to error correction coding, forward error correction coding is carried out, an error correction code bit data stream is obtained, and the error correction code bit data stream comprises non-equal-probability amplitude bits corresponding to orthogonal amplitude modulation constellation points and equal-probability symbol bits; and recombining and adapting the error correction code bit data stream into a frame format corresponding to quadrature amplitude modulation, and mapping into a plurality of modulation constellation points according to a quadrature amplitude modulation constellation diagram. The signal-to-noise ratio is improved, and the communication performance and the transmission stability are improved.

A first wireless device receives, from one or more second wireless devices, a plurality of sidelink control information (SCIs). The plurality of SCIs indicate physical sidelink shared channel (PSSCH) receptions and physical sidelink feedback channel (PSFCH) transmissions. Each of the PSFCH transmissions is associated with a respective sidelink reference signal. The first wireless device determines: a sidelink reference signal associated with a first PSFCH transmission with a smallest priority value among priority values of the PSFCH transmissions; and one or more first PSFCH transmissions, comprising the first PSFCH transmission, associated with the sidelink reference signal from the PSFCH transmission. The first wireless device transmits, in a PSFCH occasion of a sidelink slot, at least one of the one or more first PSFCH transmissions.

The invention provides a diversity communication method and a diversity communication device, which are used for providing a diversity transmission scheme. The first device maps a plurality of modulation symbols corresponding to one transmission block to a plurality of antenna ports; in each mapping, a plurality of consecutive modulation symbols are mapped onto one antenna port. And then, the first equipment maps the modulation symbols on each antenna port to the frequency domain resources corresponding to the antenna ports, and the frequency domain resources corresponding to different antenna ports are not overlapped. Due to the fact that frequency domain resources corresponding to different antenna ports are not overlapped, that is, one transmission block is transmitted on different channels, the transmission block achieves the purpose of diversity transmission. Moreover, when the modulation symbols are mapped to the antenna port, a plurality of continuous modulation symbols are mapped each time, and the mapping mode can keep the phase difference among the plurality of continuous modulation symbols not damaged, so that the communication system can keep a relatively low peak-to-average power ratio (PAPR).

A channel state information determination method and device, in the method, a network device determines N rows of base vectors corresponding to N time units based on mobile state information and a channel map of a terminal device, each row of the N rows of base vectors comprises X base vectors, and the channel map is used for indicating channel characteristics based on a location area; the network equipment sends first indication information, wherein the first indication information is used for indicating N rows of base vectors; the network equipment respectively sends pilot signals in N time units; the network equipment receives second indication information, the second indication information is used for indicating weighting coefficients of Y base vectors in the X base vectors, and the weighting coefficients of the Y base vectors are determined based on the pilot signal; and the network equipment determines channel state information corresponding to M time units based on the weighting coefficients of the Y base vectors and the N rows of base vectors, and the M time units comprise N time units. The method can improve the accuracy of the channel state information.

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.

Disclosed in the present invention are a wireless communication method, an electronic device and a storage medium. The method includes: determining an adjacent communication entity around an STA on the basis of a received OBSS PPDU; and reporting information of the determined adjacent communication entity to an AP, wherein the reported information of the adjacent communication entity is used by the AP to select a transmission object. In the embodiments of the present invention, when a spatial reuse mechanism is implemented, an AP can select a transmission object according to address information of an OBSS PPDU(s) that is reported by an STA associated with the AP, thereby avoiding a communication failure or efficiency reduction caused by blind transmission.

The present is related to a wireless local area network (WLAN) system. A transmitting station (STA) may generate a physical protocol data unit (PPDU), and the transmitting STA may transmit the PPDU over a 320 MHz band, wherein the PPDU may include a long training field (LTF) signal which may be generated on the basis of an LTF sequence for the 320 MHz band.

Provided are an information transmission method and device, and a storage medium. The information transmission method applied to a first communication node includes: sending feedback indication information to a second communication node according to configuration information or pre-configuration information, and receiving feedback information sent by the second communication node according to the configuration information or pre-configuration information and the feedback indication information.

The invention discloses a beam management method and device, and relates to the technical field of communication. The method comprises: a network device sending M pilot frequency packets to a terminal device, each pilot frequency packet corresponding to a plurality of pilot frequency resources or a plurality of pilot frequency ports, M being a positive integer. A network device obtains a measurement value and an index value of at least one pilot packet of M pilot packets. Wherein the measurement value is used for representing the channel state information of the pilot frequency group, and the index value is used for representing the pilot frequency resource or the pilot frequency port associated with the measurement value. In the application, after a network device sends a plurality of pilot frequency groups to a terminal device, the terminal device calculates a measurement value of each pilot frequency group according to the plurality of pilot frequency groups, and reports the measurement value corresponding to at least one pilot frequency group to the network device. Therefore, the measurement and reporting of different analog beams can be realized, the perception of the terminal equipment on different analog beams is realized, and the communication performance of a multi-user system is improved.

A method for indicating layer mapping of a code word (CW), performed by a terminal, includes: determining and enabling a target layer mapping scheme, wherein the target layer mapping scheme comprises a Type-1 layer mapping scheme or a Type-2 layer mapping scheme; wherein a maximum value of difference between numbers of layers corresponding to two CWs after layer mapping based on the Type-1 layer mapping scheme is different from a maximum value of difference between numbers of layers corresponding to the two CWs after layer mapping based on the Type-2 layer mapping scheme.

This disclosure provides methods, components, devices and systems for enhancements to request to send (RTS) and clear to send (CTS) exchanges. A first wireless device may receive a beacon frame indicating for the first wireless device to monitor a first channel for a first frame that schedules communication via one or more channels. The first wireless device may receive, from a second wireless device, the first frame indicating a channel bandwidth and a puncturing pattern of multiple available puncturing patterns for the channel bandwidth. The puncturing pattern may be associated with a first subset of a set of multiple channels of the channel bandwidth. The first wireless device may transmit, to the second wireless device, a second frame indicating that a second subset of channels is available and may receive one or more data packets via the second subset of channels.

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.

This disclosure provides methods, components, devices and systems for modulation of extended long range wireless packets. Some aspects more specifically relate to communicating packets in an extended long range (ELR) communication mode. A wireless communication device may receive an indication to transmit a single-user wireless packet associated with the ELR communication mode, where the single-user wireless packet includes a preamble portion and a data portion. At least the data portion may be associated with a duplication scheme pertaining to the ELR communication mode. The wireless communication device may transmit, in accordance with the indication, the single-user wireless packet using a first quantity of duplications of at least the data portion in accordance with the duplication scheme, where the first quantity of duplications is associated with the ELR communication mode. Additionally, or alternatively, the wireless communication device may transmit the single-user wireless packet in accordance with a distributed resource unit (dRU).

In aspects, a base station establishes a wireless connection with a user equipment, UE. The base station determines to include at least a first adaptive phase-changing device, APD, and a second APD in a wireless communication path with the UE. In response to determining to include multiple APDs in the communication path, the base station determines a first surface configuration for a first surface of the first APD and a second surface configuration for a second surface of the second APD. The base station directs the first APD to apply the first surface configuration to the first surface and directs the second APD to apply the second surface configuration to the second surface. The base station and the UE communicate with the UE using wireless transmissions that travel along a wireless communication path that includes the first surface of the first APD and the second surface of the second APD.

Methods, systems, and devices for multiple transmission schemes in wireless communication are described. In one aspect, a wireless communication method is disclosed to include: transmitting, by a first communication device, at least one of i) a repetition mode of data transmissions to be sent to a second communication device, ii) a mapping between N indicated beams and all scheduled transmissions of the data, or iii) a RV (Redundant Version) relationship among the all scheduled transmissions of the data, wherein the transmitting is based on at least one of the N indicated beam(s), a DMRS (Demodulation Reference Signals) port indication, or K time domain occasions, N and K being non-negative integers.

Methods and apparatuses for are NTN IoT HARQ disabling for HARQ bundling and multiple TB scheduling disclosed. A UE comprises a processor; and a transceiver coupled to the processor, wherein the processor is configured to receive, via the transceiver, a control signal scheduling transport block(s), where each of the transport block(s) is associated with an HARQ process with HARQ feedback enabling or an HARQ process with HARQ feedback disabling according to an HARQ indication; and receive, via the transceiver, the transport block(s) based on the control signal.

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.

Methods, systems, and devices for wireless communications are described. The method may include a first network node receiving a configuration message for a report by the first network node of parameters for a temporal domain precoder. The configuration message may indicate a range of Doppler frequencies, a resolution associated with the range of Doppler frequencies, or a quantity of the parameters to be reported. The first network node may estimate a communications channel and select one or more bins within the range of Doppler frequencies based on the channel estimation. For each selected bin, the first network node may determine a corresponding discrete Fourier transform (DFT) vector and transmit a report indicating the corresponding DFT vector.

This disclosure provides methods, components, devices and systems for communications for fast link adaptation (FLA). In some examples, a transmitter may transmit an FLA information request via a physical layer (PHY) protocol data unit (PPDU). The PPDU may include an FLA information request indicating that the receiver is to report one or more parameter values (such as proposed updates to current parameter values) for a currently used quantity of spatial streams. In some examples, the PPDU may include (such as in a media access control (MAC) header) a bit which can be turned on to request a second FLA element indicating one or more parameters for a proposed (such as, updated) quantity of spatial streams.