154results about "Transmission control/equalising" patented technology

This disclosure pertains to devices, methods, and systems implemented for discontinuous network access. The implementation includes monitoring for a presence indication signal in a second cell. The implementation includes determining to transmit a wake-up signal for the first cell based on detecting the presence indication signal in the second cell and based on a measurement performed on a synchronization signal block (SSB) of the second cell being less than a threshold. The implementation includes transmitting the wake-up signal. The implementation includes monitoring for transmission of an SSB of the first cell after transmitting the wake-up signal. The implementation includes receiving information indicating that the first cell has transitioned to an active state after transmitting the wake-up signal. The implementation also includes transmitting data via the first cell after receiving the information indicating that the first cell has transitioned to the active state.

The invention discloses an unmanned aerial vehicle anti-collision method and system based on LoRa communication, and belongs to the technical field of risk avoidance of multiple unmanned aerial vehicles. The method comprises the following steps: constructing an ad hoc network communication architecture to realize flight state broadcast and synchronization; fusing the multi-source data by adopting a space-time alignment algorithm, and constructing a dynamic airspace situation map taking a local machine as a center; calculating a time window and space overlapping probability of the predicted intersection; a multi-priority dynamic negotiation protocol is considered, and autonomous decision making of the unmanned aerial vehicle cluster in a scene without a central node is supported; and dynamically adjusting the flight path, speed and height through a collaborative obstacle avoidance algorithm. Through a spread spectrum modulation technology and an adaptive power control mechanism, over-the-horizon communication coverage of more than 10km level is realized; through fusion of a kinematics prediction model and a risk quantification algorithm, millisecond identification and hierarchical response of collision threats are realized, a global optimal avoidance strategy is achieved, communication delay and calculation bottleneck brought by centralized decision are effectively avoided, and the real-time collaborative obstacle avoidance capability in a complex airspace is ensured.

The embodiment of the invention provides a method for realizing long-distance signal transmission under the condition of a porous medium in a goaf. The method comprises the following steps: selecting a proper signal frequency range based on the physical characteristics of the porous medium in the goaf; designing a corresponding signal modulation mode according to the selected signal frequency range; the stability of a signal propagation path is enhanced through a relay node deployed in the goaf; modulation parameters are dynamically adjusted based on the signal quality fed back by the relay node to optimize the transmission effect. Through the scheme of the embodiment of the invention, the problem of how to optimize and select the signal frequency so as to solve the problem of too fast signal attenuation in the porous medium can be solved, and meanwhile, the problem of how to regulate and control the dielectric property of the transmission path so as to solve the delay problem caused by signal refraction and reflection can be solved; and the problem of bit error rate increase in long-distance transmission can be solved by adjusting the signal coding mode.

Antenna beam sweeping according to the present disclosure involves different communication devices that are within an interference range of each other transmitting beam sweeping signals using different communication resources. This allows a receiver to distinguish between beam sweeping signals that are received from different transmitters, and may facilitate antenna beam alignment in multi-connection scenarios. Beam indices could be used to identify antenna beams for antenna beam management, in control signaling between base stations and User Equipment (UE), for example. Beam tracking and other aspects of antenna beam management are also disclosed.

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

The invention discloses a power grid equipment edge calculation and information transmission method and system based on an EKF-PPO algorithm. The method comprises the following steps: constructing a state evolution model of mobile eavesdropping equipment; constructing a radar measurement model; predicting a mobile eavesdropping device state and an MSE matrix based on the state evolution model; a channel between the unmanned aerial vehicle and the mobile eavesdropping device is calculated, and the trajectory and speed of the unmanned aerial vehicle, the bit number locally calculated by the edge device, the bit number uploaded to the unmanned aerial vehicle, the transmitted beam forming vector of the edge device and the frequency locally calculated by the edge device are designed by adopting a PPO algorithm; a Kalman gain is calculated using radar measurement noise, and a mobile eavesdropping device state and an MSE matrix are corrected based on the Kalman gain and real-time radar measurement data. The position of the mobile eavesdropping device is estimated in real time through the EKF algorithm, it is ensured that unloading data can be prevented from being exposed to the eavesdropping device, meanwhile, the flight path, the communication beam and the data unloading decision of the unmanned aerial vehicle are optimized through the PPO algorithm, and the safety and efficiency of signal transmission are guaranteed.

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.

A terminal (10) to be installed in a machine having rotor blades in a communication system in which the terminal (10) and a base station transmit and receive data via a relay station to and from each other, includes a rotor blade state monitoring unit (11) that monitors a rotor blade state by measuring the timing at which the rotor blades block a communication path in midair between the relay station and the terminal (10), and a transceiver (12) that transmits the rotor blade state to the base station and transmit the data using radio resources allocated by the base station.

The objective of the present invention is to provide a wireless communication system that can implement compensation for wireless signals without distinguishing faults in the wireless signals by type. A wireless communication system according to the present disclosure comprises a transmitting station that transmits wireless signals and a receiving station that receives the wireless signals. The receiving station has a compensation circuit that includes a learning model. The receiving station is configured to execute: a process of using the learning model to process input signals and generate output signals, the input signals including received signals at the receiving station that originate from known bit sequences transmitted from the transmitting station; a process of training the learning model such that the output signals approach supervisory data comprising the known bit sequences; and a process of performing processing on a newly inputted input signal on the basis of the trained learning model to output an improved output signal.

The application belongs to the technical field of electric communication, and particularly relates to digital communication, and especially relates to a multi-source data communication system and a communication method, which comprises a general control and a plurality of preprocessing devices; the preprocessing device is connected with a corresponding device, and the device is simultaneously connected with other preprocessing devices; the preprocessing device is configured to receive waveform data sent by the corresponding device, and send peak data in the waveform data to the general control; the general control is configured to mark a preprocessing device to be adjusted when the preprocessing device cannot identify peak data from the waveform data sent by the corresponding device, then the general control controls the remaining preprocessing devices to receive real-time waveform data sent by the device corresponding to the preprocessing device to be adjusted, and the general control adjusts the preprocessing device to be adjusted according to the real-time waveform data, thereby removing a high-precision conversion module and reducing cost.

An O-DU and O-RU in a cellular communication network negotiate frequency resolution to perform equalization and beamforming over the same subcarrier. In one example embodiment, the O-DU sends a message to the O-RU requesting subcarrier information used for performing a beamforming function in the O-RU. The O-DU receives the subcarrier information from the O- RU. The O-DU then uses the subcarrier information received from the O-RU to perform an equalization function.

A control device according to the present disclosure is provided with a control unit. The control unit virtually generates a communication environment for communication conducted between a first communication device and a second communication device via a third communication device. The control unit determines control information, for controlling the third communication device, on the basis of the virtual communication environment. The control unit transmits the control information to the third communication device.

According to an aspect of the present invention, a wireless communication system comprises: a terminal-side communication device that has an antenna; and a wireless communication device that uses analog signals, which transport information by using the waveforms of an amplitude or a phase of light, to communicate with the terminal-side communication device, thereby performing the reception of signals received by the antenna and the transmission of signals that are to be radiated by the antenna. The wireless communication system uses Time Division Duplex (TDD) to perform wireless communication with a terminal, which is a communication target, via the antenna. The wireless communication device comprises: an uplink delay adjustment unit that adjusts the delay caused by the propagation of an uplink signal that is a signal flowing from the terminal through the antenna toward the wireless communication device; and a downlink delay adjustment unit that adjusts the delay caused by the propagation of a downlink signal that is a signal flowing from the wireless communication device through the antenna toward the terminal.

In a general aspect, a communication system comprises a first station and a second station. Each station includes a transceiver and a control subsystem. The transceiver includes having one or more photonic crystal masers and one or more photonic crystal receivers. The control subsystem includes one or more lasers optically coupled to the one or more photonic crystal masers and the one or more photonic crystal receivers. The control subsystem also includes modulation electronics in communication with the one or more lasers and configured to control one or more properties of a first input optical signal received by each photonic crystal maser. The control subsystem additionally includes demodulation electronics in communication with the one or more lasers and configured to control one or more properties of a second input optical signal received by each photonic crystal receiver.

According to one embodiment, a method performed by a device of a distributed unit (DU) comprises an operation of generating a control plane (C-plane) message including section information and section extension information for indicating a resource region. The method comprises an operation of transmitting the C-plane message to a radio unit (RU). The C-plane message indicates an allocated resource region for each port among a plurality of ports for a group configuration, within the resource region.

The present disclosure provides an interference suppression method and apparatus and a storage medium. The interference suppression method comprises: performing uplink transmission in a downlink time slot by using first uplink transmit power, the first uplink transmit power being maximum uplink transmit power supported and used by a terminal under a first power level corresponding to the type of the terminal; or increasing the transmit power level of the terminal from the first power level to a second power level; and performing uplink transmission in the downlink time slot on the basis of the second power level. According to the present disclosure, the power of uplink transmission of the terminal is increased, such that when a full-duplex terminal performs uplink transmission in a downlink time slot, downlink self-interference from a serving base station and cross time slot interference from an adjacent base station of the serving base station are reduced, the reliability of uplink transmission is improved, and the feasibility of enhancing full-duplex communication is improved.

The present disclosure relates to devices, methods, and systems implemented for discontinuous network access. The implementation includes monitoring a presence indication signal in a second cell. The implementation includes determining to transmit a wake-up signal for a first cell based on detecting the presence indication signal in the second cell and based on a measurement performed on a Synchronization Signal Block (SSB) of the second cell being less than a threshold. The implementation includes transmitting the wake-up signal. The implementation includes monitoring transmission of an SSB of the first cell after transmitting the wake-up signal. The implementation includes receiving information indicating that the first cell has transitioned to an active state after transmitting the wake-up signal. The implementation also includes transmitting data via the first cell after receiving information indicating that the first cell has transitioned to an active state.

The present disclosure proposes a method for getting a binary sequence representing the sampling of an underlying binary code sequence. The proposed approach builds the target sequence by concatenating sets of samples taken from another reference sequence representing the sampling of the same underlying code but at different sampling rate and / or initial phase than the target sequence. The main idea is that both the target and the reference sequences share sets of samples that are common, sample by sample, in both sequences, so that such sets of samples can be reused to build the target sequence, and, at each transition between sets, one or several reference samples must be either duplicated or discarded. The present disclosure explains how to compute the indexes of those common sets and shows how the samples at the transitions need to be managed. The main advantage of this approach is to allow computational savings.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. In one embodiment, a method includes determining an optimal number of resource block separation between pairs of measurements based on system settings of a distributed communication system, wherein the system settings specify one or more of a maximum tolerable calibration error or a required calibration accuracy, accessing transmission signals comprising at least a first transmission signal and a second transmission signal, accessing measurements using reference signals at multiple sub-frequency bands over a particular frequency band, wherein the measurements comprise at least a first pair of measurements and a second pair of measurements, wherein the first and second pairs of measurements are separated by the optimal number of resource block separation, determining a timing mismatch between the first and second transmission signals based on the optimal number of resource block separation, and generating an integrated transmission signal based on the first and second transmission signals and the timing mismatch.

A signal processing device for controlling exposure to wireless communication, the signal processing device (150; 250; 650; 650', 850) comprising: a processing circuit (251; 851) which is arranged to determine at least one distance between an external object based on at least one reflection coefficient, and to control a transmission by a first antenna module (111, 112; 300; 500; 700) based on the at least one determined distance, wherein the at least one reflection coefficient includes a reflection coefficient of a second antenna module (121, 122; 621; 621'), wherein the first antenna module (111, 112; 300; 500; 700) is configured for wireless communication in a first frequency band, the second antenna module (121, 122; 621; 621') is configured for wireless communication in a second frequency band, and the second frequency band is a lower frequency band than the first frequency band.

To provide a RoF transceiver capable of effectively saving power of a wireless system while keeping the function of a wireless communication system.SOLUTION: A RoF transceiver 100 is a RoF transceiver 100 for relay transmission of a reception signal on wireless communication between a base station and a terminal through an optical fiber transmission line 200. The RoF transceiver 100 includes a reception signal level detection part 121 for detecting reception power of the reception signal. The RoF transceiver 100 also includes a first comparator 122a for comparing the reception power and a determination level stored in a storage part 180 in advance. Furthermore, the RoF transceiver 100 includes a switch control part 123 for controlling a light emission part 130a for emitting a light signal to the optical fiber transmission line 200 based on the result compared by the first comparator 122a. The switch control part 123 controls a protection switch to changeover to the side of a termination resistor 133 if the reception power exceeds an upper limit of the determination level.SELECTED DRAWING: Figure 3

The invention relates, among other things, to a network device (10, 11, 12) for an intercom network (13) for enabling audio communication, in particular duplex audio communication, with other participants (14a, 14b, 14c, 14d, 14e, 14f) of the intercom network, comprising a housing (33) and a communication module (20a, 20b) arranged therein or thereon, with which a radio connection for transmitting audio signals to another participant can be established, wherein the radio connection is subject to the DECT protocol. A particular feature is that the network device (10, 11, 12) has a device (21) for preventing or reducing multipath interference.

The embodiment of the application discloses a traffic distribution method and device for an aggregated link, an optical line terminal (OLT) and a medium. The traffic distribution method for the aggregated link comprises the following steps: predicting a predicted average rate of a port in a current monitoring period and a rate average value of a plurality of ports based on port traffic of the port in a monitoring period, wherein the rate average value is an average value of the predicted average rate; and adjusting port traffic of a to-be-adjusted port in the current monitoring period to an adjusted port according to a load sharing element, wherein the load sharing element comprises preset message length intervals of different rates in the port traffic, the to-be-adjusted port is a port with a predicted traffic rate greater than the rate average value, and the adjusted port is a port with a predicted traffic rate less than the rate average value. The traffic of each physical port of the aggregated link can be dynamically distributed, the load difference of each physical port is reduced, and resource waste is reduced.

A method for rate adaptation in a communication device, the method comprising: during a time interval, transmitting over a wireless channel to a peer communication device both (i) communication packets carrying user data at a communication data rate and (ii) channel probe packets for probing channel conditions at a channel probe data rate derived from the communication data rate; Estimating a first statistical power of the communication packets over the time interval and a second statistical power of the channel probe packets; and Setting the communication data rate for a subsequent time interval based on at least one of the first statistical performance and / or the second statistical performance.

Calculating the phase difference of the OFDM symbols of the PUCCH from the OFDM symbols of the first and second DM-RSs, the OFDM symbols of the second and third DM-RSs, and the OFDM symbols of the first and third DM-RSs; correlating the OFDM symbols across all DM-RSs; determining the Doppler shift reported to layer 2; compensating the channel estimation results and data symbols with the Doppler shift; performing a first-level phase correction for the PUSCH by correcting the phase on the output samples of the IDFT from the Doppler shift received from layer 2; measuring the phase deviation on the output of the first-level phase correction; accumulating the measured phase deviation and the received Doppler shift; reporting the accumulated phase correction to layer 2; and performing a second-level phase correction. A technique for receiving PUSCH and PUCCH transmitted by a high-speed transmitter is provided.

The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). The present disclosure relates to the field of a wireless communication system. More particularly, the present disclosure relates to method, apparatus(or device) and system for restricting channel estimation in the time domain for downlink transmission in a wireless communication system. A main technical result consists in enabling more flexible MU-MIMO scheduling in the time domain, including capabilities for more flexible channel estimation restrictions in the time domain, which ultimately leads to improved communication performance between the BS and the UE. Base station - implemented method of communication with one or more user equipments, the method comprising: defining possible values of a parameter of time interval of channel estimation performed by one or more UEs using one or more demodulation reference signals (DMRSs) for receiving a physical downlink shared channel (PDSCH); transmitting, using downlink control information (DCI) signaling, to the one or more UEs an indication of a scheduled PDSCH transmission and an indication of a to-be-applied value of said parameter from among the possible values of the parameter; and performing the scheduled PDSCH transmission to the one or more UEs.

A method (100) for determining operating parameters (vk*, u*) a pre-encoder phase and a combiner phase of a transmitter (500) or a receiver (600) configured for over-the-air computing, includes determining (130) a first combiner (u (0) ) based on an aggregated channel matrix (H) containing all channel vectors (h k )) of all transmitters (500). The procedure further includes the iterative refinement (101) of the combiner ( U (i i) ), until a termination criterion is met, resulting in an optimized combiner (u*). Based on the previously optimized combiner (u*), optimized precoder parameters are calculated. (vk * ) calculated for all transmitters (500) (190), while ensuring that the square (|v k | 2 ) the precoding scalar of each transmitter (500) does not exceed a predetermined power value (P).

Provided are backscatter communication method, apparatus and device, and a storage medium. The backscatter communication method applied to a first communication node includes: (S110) determining a target position situation used to carry first information, and (S120) performing backscatter communication according to the target position situation.

Methods and systems for orthogonal time frequency space (OTFS) communication using predefined basis signals are described. An example digital communication method includes receiving a signal over a communication channel, determining an estimate of the communication channel from one or more pilot symbols in the signal transmission. Herein the one or more pilot symbols are assigned along a delay-Doppler resource grid. The method further includes equalizing non-pilot symbols in the signal transmission by rotating the estimate of the communication channel according to grid locations of the one or more pilot symbols along the delay-Doppler resource grid at other grid locations, and recovering data bits from the equalized non-pilot symbols.