620 results about "Synchronization signal" patented technology

Methods and apparatus of monitoring behaviour determination for overlapping ePDCCH and CSI-RS / SSB / PDSCH / PDCCH are disclosed. The method includes: receiving, by a receiver, a configuration for a transmission of enhanced Physical Downlink Control Channel (ePDCCH) with two Transmission Configuration Indication (TCI) states including two Quasi Co-Location Type D (QCL-TypeD) properties; and determining, by a processor, a monitoring behaviour based on a QCL-TypeD assumption and / or a predefined priority rule, wherein at least one symbol of the ePDCCH overlaps with a transmission of Channel State Information Reference Signal (CSI-RS). Synchronization Signal Block (SSB). Physical Downlink Shared Channel (PDSCH), and / or Physical Downlink Control Channel (PDCCH).

This invention discloses a ranging method and system based on a network data link, relating to the field of wireless communication ranging technology. The method includes the following steps: synchronizing the clocks of all nodes in the network and aligning the transmit and receive timings between nodes; each node in the network transmitting a synchronization signal within its allocated fixed transmission time slot according to a preset fixed frame structure; the receiving node calculating the theoretical time at which it receives the synchronization signal when the signal propagation delay is zero based on the synchronization clock and the preset fixed frame structure, and recording the actual time of receiving the synchronization signal; and the receiving node calculating the distance between itself and the node that transmitted the synchronization signal based on the time difference between the theoretical and actual times. This invention effectively eliminates ranging errors caused by crystal oscillator clock deviations between nodes, requires no external satellite signals or two-way signaling interaction, and achieves ranging by multiplexing the synchronization signal. It significantly reduces hardware costs while achieving high-precision, low-latency, and environmentally adaptable inter-node ranging.

This application relates to an interrupt generation device with synchronization function. By using one of the interrupt generation modules as a reference interrupt module, when the synchronization signal output by the synchronization output module arrives, the reference timing module adjusts the count of each interrupt module according to the synchronization signal, the reference count of the reference interrupt module, and the timing duration of the reference timing module itself, so as to change the output time of each subsequent interrupt signal. This makes the output reference interrupt signal synchronized with the synchronization signal, and other interrupt signals still maintain the initial phase relationship with the reference interrupt signal before adjustment, and eventually synchronize with the synchronization signal. In this way, only one synchronization signal is needed to ensure that the synchronization of all interrupt signals is achieved without changing the phase relationship between the interrupt signals of each interrupt generation module. The method is simple and has high synchronization accuracy.

A self-tipping railway car with an automatic unloading detection device, belonging to the field of railway transportation, includes a self-tipping railway car with axle suppression mechanism. The left and right ends of the car's bottom are respectively mounted on the vehicle via a first cylinder and a second cylinder. A solenoid valve is mounted on the vehicle to control the intake and exhaust of the first and second cylinders. A battery box and a power supply box are mounted on the side bolster beams of the vehicle and are electrically connected. A signal transceiver is installed inside the power supply box and is electrically connected to a time relay. The time relay is electrically connected to the solenoid valve, controlling the first stage of the solenoid valve's operation. A first synchronous signal transceiver is installed inside the power supply box, and a second synchronous signal transceiver is installed on the end wall of the self-tipping railway car. A limit switch device detects the opening and closing status of the side doors of the self-tipping railway car. This design solves the problem of automatic unloading of the self-tipping railway car with axle suppression mechanism, eliminating the safety hazard of tipping over during the unloading process.

The application provides a phase-shift PWM modulation control method based on duty cycle scaling, which realizes real-time dynamic adjustment of output duty cycle by introducing a duty cycle scaling mechanism, can be used for active equalization control of branch currents in a multiple interleaved topology, makes the current and thermal stress distribution of each branch device more consistent, and thus significantly improves the overall operation stability and long-term reliability of the system. The application supports a large range of phase shift and is suitable for various high-power multiple interleaved topology structures. The application does not require an external synchronization signal and can generate double-bridge-arm driving signals only by relying on a single PWM input, which significantly reduces the system implementation complexity, simplifies the control interface and saves control resources.

A method, performed by a terminal, for receiving a downlink signal and channel in a wireless communication system comprises the steps of: receiving a synchronization signals and PBCH block (SSB) from a base station; and transmitting an uplink channel to the base station on the basis of the SSB.

The application discloses a robot joint driving board external control method, system and related device, which is used for realizing the externalization of the driving board to optimize the heat dissipation and space layout of the robot joint, and ensuring the timing coordination of the signal interaction between the driving board and the joint side. The method comprises the following steps: the driving board runs based on a preset control period, and sends a synchronization signal to the acquisition board through a synchronization signal channel at the starting stage of each control period; the acquisition board performs a clock synchronization operation in response to receiving the synchronization signal, so as to calibrate the internal working timing of the acquisition board; the acquisition board collects joint sensor data after performing the clock synchronization operation, and sends the joint sensor data to the driving board through a data communication channel; and the driving board performs timing alignment processing on the joint sensor data based on the timing corresponding relationship between the sending time of the synchronization signal and the receiving time of the joint sensor data, and completes joint control calculation.

The application belongs to the cross field of electric power system and power electronics technology, and particularly relates to a regional power grid power quality treatment method for multi-type subject access. By introducing advanced phase compensation, the phase lag of the detection link is calculated and fully compensated in real time, so that the extracted harmonic component is instantaneously synchronized with the actual harmonic of the power grid. In combination with an adaptive hybrid modulation technology, the dominant harmonic frequency band can be focused on compensation. A fully decoupled control based on feedforward is adopted, which eliminates the cross coupling between the d and q axis currents, so that the inner loop controller can realize fast tracking with almost no overshoot. Meanwhile, the adaptive adjustment mechanism of the PLL bandwidth ensures that the synchronization signal is fast and robust when the power grid changes.

Various aspects of the present disclosure relate to transmitting a synchronization signal block (SSB) associated with a cell, where the SSB spans a plurality of symbols and comprises at least a first set of symbols and a second set of symbols mutually exclusive to the first set of symbols; transmitting a broadcast channel within the first set of symbols; and transmitting a reference signal corresponding to the broadcast channel within the second set of symbols, where one or more symbol locations of the second set of symbols is based at least in part on an identifier of the cell.

A communication method and related devices, in which a first terminal device receives first transmission information from a target device, wherein the first transmission information is used to indicate a detection position of a synchronization signal block (SSB) corresponding to a wave position where the first terminal device is located; and the first terminal device receives a first SSB based on the first transmission information. In this way, the terminal device does not need to perform blind detection in the whole SSB period to obtain the first SSB, but only needs to perform reception of the first SSB at the detection position indicated by the first transmission information, thereby reducing the complexity and power consumption of the terminal device in obtaining SSB information.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a discovery signal indicating a synchronization signal block (SSB) burst periodicity of a plurality of SSB burst periodicities. The UE may receive an SSB based at least in part on monitoring a communication channel for a first time period, wherein the first time period corresponds to the SSB burst periodicity. Numerous other aspects are described.

This application proposes a random access method, user equipment, and storage medium based on cell handover. The method includes: responding to receiving a handover command from a source cell, parsing PRACH configuration information about the target cell from the handover command; detecting a synchronization signal and completing cell synchronization based on the synchronization signal; responding to completing cell synchronization, i.e., sending a preamble sequence, specifically sending the preamble sequence for the first time in the current system frame and for the second time in the next system frame; setting an enlarged first RAR listening window based on the PRACH configuration information; and receiving a RAR from the target cell based on the first RAR listening window, and performing corresponding operations according to the random access type upon receiving the RAR. Based on this, this application eliminates the need to wait for successful decoding of the MIB, thus improving the latency of random access during cell handover and increasing access efficiency.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a layer 1 or layer 2 triggered mobility (LTM) cell switch command that includes an indication of a transmission configuration indicator (TCI) state associated with a target cell. The UE may communicate, during or after a random access procedure associated with the target cell, one or more transmissions using the TCI state or a quasi-co-location (QCL) of a synchronization signal block (SSB) associated with the target cell. In some aspects, a UE may receive a physical downlink control channel (PDCCH) order message that triggers a random access procedure associated with LTM. The UE may transmit, using one or more time durations, a physical random access channel (PRACH) transmission in a PRACH occasion associated with the random access procedure. Numerous other aspects are described.

The application provides a UAV landing guidance method based on radio ranging, comprising: clock calibration of node B and node A; judging that a UAV enters a landing guidance area, a flight state is an approach state, controlling node A and node B to simultaneously send a first synchronization signal to node P at a set time, receiving a second synchronization signal sent from node P, the node P being the UAV, and calculating AP and BP ranging information; according to the obtained AP and BP ranging information and position information of node A and node B, the position of node P is solved, a lateral deviation is determined, and the UAV is guided to land. Through double-station combined ranging, the application can effectively provide auxiliary information for safe landing of the UAV without increasing additional airborne and ground equipment.

Method (300) for providing fault-tolerant network time synchronization in a motor vehicle communication network (100), wherein the motor vehicle communication network (100) comprises: a video controller (115) coupled with a first camera (110) and a second camera (175), a lidar controller (125) coupled with a first lidar transceiver (130) and a second lidar transceiver (120), a radar controller (145) coupled with a first radar transceiver (140) and a second radar (150), a processor (160), a user interface (165), a vehicle controller (155) and a trailer interface (170) the procedure includes the following: Generation of a time synchronization signal; Transmission of the time synchronization signal from a first switch (415) to a second switch (425) via a first connection and from the first switch (415) to a third switch (435) via a second connection; Detecting a connection error on the second connection; and Transmitting the time synchronization signal from the second switch to the third switch (435) via a third connection in response to the connection fault, wherein the time synchronization signal is generated by a radar controller coupled to the first switch, and wherein a first radar sensor is coupled to the second switch and a second radar sensor is coupled to the third switch, wherein the lidar controller (125), the video controller (115) and the radar controller (145) are each configured to receive and process data from their respective sensors, and the video controller (115) is set up to receive images from the first camera (110) and the second camera (175) and to process the images to generate image data for use in creating an object map around the vehicle (105).

Example embodiments of the present disclosure relate to cell measurement deactivation. A method includes receiving at least one synchronization signal block, SSB, from a cell of an apparatus, and if determining that on-demand SSB (OD-SSB) activation signaling for the cell is received, determining whether to perform or not perform a measurement on an OD-SSB received from the cell based on at least one of a measurement status of the at least one SSB from the cell, or a relationship between a first frequency used to transmit the OD-SSB and a second frequency used to transmit the at least one SSB.

An electronic system with heat dissipation and feed-forward active noise control function includes a fan module, an embedded controller, a reference microphone, a multi-channel speaker module, a beamforming control module and an active noise reduction controller. The beamforming control module controls the orientation of the multi-channel speaker module. The multi-channel speaker module provides anti-phase noise signals to cancel noise according to a speaker control signal. The reference microphone detects broadband noise generated by the fan module in operation to provide a corresponding broadband noise signal. A virtual microphone module of the active noise reduction controller provides a virtual error signal according to a transfer function between the reference microphone and a physical error microphone, a transfer function between the multi-channel speaker module and the physical error microphone and the broadband noise signal, and generates the speaker control signal according to a synchronization signal, the broadband noise signal and the virtual error signal.

A highly efficient 5G mobile phone signal jamming system includes one 5G signal receiving link and multiple jamming transmission links. The receiving link performs polling and time-division multiplexing of downlink signals from various 5G frequency bands and GSCN frequency points. The signal receiving link receives downlink signals from airborne 5G base stations and GSCN frequency points via an antenna. After passing through filters, low-noise amplifiers, mixer downconversion, analog-to-digital conversion, and digital downconversion frequency selection, it performs PSS signal detection and determines whether the jamming transmission link should send signal interference SSB blocks. Compared with existing technologies, this invention detects whether there are PSS synchronization signals on 5G frequency bands and GSCN frequency points, and sends interference signals at the corresponding frequency and time of SSB to disrupt the UE's periodic measurement and reporting of SSB, thereby preventing the mobile phone from camping or accessing the 5G system. It greatly reduces the bandwidth and time of sending interference signals, significantly reducing the power consumption and radiation of the 5G signal jamming system.

This invention relates to a sensing-integrated waveform design method based on OFDM time-frequency domain phase coding, belonging to the field of wireless communication technology. In this method, the transmitting end generates a complementary Gray sequence and a pseudo-random sequence. These two sequences are then divided into blocks in the frequency domain according to their indices and phase-coded to generate a sensing waveform. A communication signal is generated through an OFDM system. The frame header of the sensing waveform is aligned with the start position of the SSB of the communication signal to generate a sensing-integrated waveform. The time slot of the transmitted communication signal is used; this waveform is the result of multiplying the communication waveform and the sensing waveform in the time domain; otherwise, the waveform is the sensing waveform. The receiving end shares the synchronization signal block and the sensing waveform. The SSB portion of the bandwidth signal is extracted from the received echo signal to estimate the time-frequency, and the echo signal is compensated. The sensing waveform is then separated from the compensated signal to reconstruct the communication signal. The waveform generated by this invention can effectively eliminate spurious peaks in the OFDM waveform, improving the sensing accuracy of the waveform without sacrificing communication performance.

According to the present disclosure, a method for performing, by a first device 100, may be proposed. The method may comprise: receiving, from a second device, a synchronization signal block including two primary synchronization signals and two secondary synchronization signals; obtaining a cell identifier related to the synchronization signal block based on a first identifier, a second identifier, and a third identifier; and performing wireless communication based on the cell identifier.

The application provides a communication method and a communication device, and relates to the field of communication. The method comprises the following steps: receiving a first synchronization signal block (SSB), the first SSB being associated with multiple system message blocks (SIBs); receiving a first SIB in the multiple SIBs according to the first SSB, wherein the first SSB and / or the first SIB carries first information, the first information is used for determining a first random access channel (RACH) occasion (RO) resource specific to the first SIB, and the coverage range of the first SIB is smaller than the coverage range of the first SSB; determining the first RO resource according to the first information; and sending a random access channel (RACH) on the first RO resource. According to the embodiment of the application, the RO resource is independently configured for the multiple SIBs associated with the SSB, or in other words, one SSB is associated with multiple RO resources, so that the terminal devices covered by different SIBs can initiate random access by using different resources, which helps to reduce the probability of random access conflict, thereby helping to improve the access capacity of the system.

A terminal includes a communication section that performs communication of uplink signals and downlink signals within a time division duplex band, and a control section that performs an action related to transmission of an uplink signal in a subband of the uplink signal in which a synchronization signal from an additional cell is set.

The utility model relates to a kind of device of pulse laser pulse sub-string, including pulse laser, laser attenuation device, laser beam-reducing device, laser polarization device, wave sheet, Pockels cell, output mirror, waveform detection device, and output mirror is to the waveform detection device output first light beam and to the original light path reflection second light beam;Laser polarization device side is also configured full mirror;Pockels cell is connected with high-voltage pulse generator, pulse laser is also connected with digital delay pulse signal generator, and digital delay pulse signal generator is used to send synchronization signal to high-voltage pulse generator to control high-voltage pulse generator to generate voltage pulse when pulse laser emits laser beam reaches Pockels cell.This application realizes the stable control and output of pulse sub-string by the electro-optic modulation characteristics of Pockels cell, compared with traditional method of improving laser repetition frequency, implementation is simple, and use component is less, while guaranteeing stability, reduce cost.

A synchronous camera apparatus includes a plurality of high-speed cameras, each including synchronization signal setting means for transmitting a set synchronization signal to each of the cameras. A system control unit in each of the cameras includes trigger information setting means for setting trigger information for generating a trigger signal to a video recording unit from the received synchronization signal and camera synchronization means. The camera synchronization means includes current time generation means for synchronizing, on the basis of a current time signal transmitted from outside, the timer with the current time signal to generate a current time and determining the exposure timing on the basis of the current time, and frame association means for associating, when it is determined that the current time acquired from the current time generation means has reached the trigger information set by the trigger information setting means, which is the trigger information with the image frame.

This invention provides a method, system, device, and storage medium for in-baseband data synchronization. One method is applied to a master device, which is a baseband unit or its corresponding acceleration subsystem. The baseband unit and the acceleration subsystem form a master-slave relationship. The method includes: sending a 1pps+tod clock synchronization signal to the slave device via a reserved pin in a PCIe slot; acquiring clock time information from the master device based on the 1pps signal, and generating a first data synchronization pointer for the data to be transmitted based on the clock time information; and sending the data to be transmitted carrying the first data synchronization pointer to the slave device. This invention enables the transmission of clock synchronization signals between the master and slave devices using reserved pins in a PCIe slot. The slave device performs local clock synchronization based on the received synchronization signal and extracts data based on the synchronization pointer. This improves the synchronization accuracy of data processing and reduces the capacity of the processor chip.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit first repetitions of a physical random access channel (PRACH) preamble during first random access channel (RACH) occasion (RO) groups, where the first RO groups include a first set of ROs that are mapped to a synchronization signal block (SSB). The UE may receive control information that activates a second set of ROs, where the second set of ROs are mapped to the SSB. The UE may transmit, after activating the second set of ROs, second repetitions of the PRACH preamble during second RO groups that include the first set of ROs and the second set of ROs, and where a starting time to begin forming the second RO groups is in accordance with RO grouping rules. Numerous other aspects are described.

This application discloses a method for dedicated data transmission and synchronization signal sharing in intelligent power cabinets, belonging to the fields of high-power power electronics technology and industrial communication. This method modifies the UART protocol frame structure, expanding the start bit from 1 bit to 3 bits to distinguish between A, B, and C phase synchronization signals or no synchronization trigger, allowing the phase information of the synchronization signal to be directly embedded in the data communication frame. The transmitting FPGA is configured with a dedicated communication status address and data length write address for the MCU to monitor and trigger data transmission, and transmission is initiated on the rising edge of the synchronization signal or by an internal periodic task. After parsing the valid synchronization bit information, the receiving FPGA immediately outputs an interrupt pulse to the MCU of its own cabinet through hardware circuitry, and employs a precise delay forwarding mechanism for the transmitting power cabinet, ensuring that the synchronization interrupt trigger times of the MCUs in each cabinet are aligned at the microsecond level. This method improves the synchronization accuracy, current sharing performance, and system reliability of multi-cabinet parallel systems, and supports dynamic redundancy switching in case of synchronization source failure.

The application provides a radar-differential pressure dual-mode liquid level signal intelligent fusion method for a chemical storage tank, and belongs to the technical field of chemical storage tank liquid level detection and intelligent signal processing. The method comprises the following steps: synchronously acquiring original liquid level signals of a radar and a differential pressure sensor; based on real-time cross-correlation intensity and trend consistency of the synchronous signal pair, deciding a current operation mode; in a cooperative mutual verification mode, taking a weighted median of two signals in a sliding time window as a common reference, and performing constraint approximation correction of respective signals to the reference; and in a master-slave reconstruction mode, taking a reliable signal verified through physical pre-checking as a leading signal, and utilizing material mass balance relationship of the storage tank. Through full-process verification and fusion driven by physical constraints, the application solves the measurement distortion problem caused by sensor interference, drift and failure under complex working conditions, and realizes high-reliability, high-precision and high-safety continuous output of the liquid level signal.