6948 results about "Synchronization signal" patented technology

This application provides a communication method and apparatus for reducing energy consumption while maintaining normal communication of a network apparatus. In the method, a terminal apparatus obtains operation mode information of a network apparatus, where an operation mode of the network apparatus includes one of a first operation mode or a second operation mode, and the first operation mode and the second operation mode belong to a same radio access technology. In the first operation mode, a transmission resource for a synchronization signal of the network apparatus has lower overheads or supports fewer functions. Alternatively, an access procedure in the first operation mode is different from an access procedure in the second operation mode. Based on the operation mode information, the terminal apparatus performs communication with the network apparatus by using the configuration information in one of the first operation mode and the second operation mode.

In the present disclosure, a method for operating a terminal in a wireless communication may include receiving, by the terminal, a synchronization signal from a base station, transmitting a random access preamble to the base station based on the synchronization signal, receiving a random access response based on the random access preamble, performing connection with the base station after receiving the random access response, receiving at least any one of AI / ML model information and model performance feedback-related information for an AI / ML model from the base station, and performing model inference in the AI / ML model based on the AI / ML model information and determining, through model performance evaluation, whether or not to transmit MPF of the AI / ML model to the base station.

Systems and methods for operating a 5G NR. In particular, a reduced capability (RedCap) user equipment (UE) can be configured to traverse a synchronization raster to locate a cell-defining synchronization signal block (CD-SSB). The CD-SSB can be used to derive, calculate, or otherwise obtain time / frequency information of a non-cell-defining synchronization signal block (NCD-SSB) which may be monitored and / or measured by the RedCap UE in a more power efficient manner.

The invention discloses a hydropower station feeder line fault detection system and method, and particularly relates to the technical field of feeder line detection. A hydropower station feeder line fault traveling wave signal and an amplitude change in a propagation process are collected in real time, an established theoretical propagation model is combined, a traveling wave attenuation rule is calculated, the reasonability of a signal transmission path is judged, frequency spectrum characteristics are extracted through frequency analysis for a signal with an unreasonable path, and the signal is matched with a preset fault traveling wave characteristic library. According to signal path rationality and source authenticity, fault point positioning accuracy is predicted, traveling wave propagation speed and line impedance are dynamically adjusted, deviation caused by clock synchronization errors is corrected, positioning precision is improved, and the problem of inaccurate positioning caused by synchronization signal interference in the prior art is effectively solved. And the stability and economic benefits of a hydropower station power supply system are greatly improved.

A UE comprising: detecting, in a cell, a synchronization signal block (SSB) comprising a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH); acquiring, from the SSB, information related to whether system information block 1 (SIB1) is on-demand system information (SI); transmitting a SIB1 request on the basis that the SIB1 is the on-demand SI; on the basis of the SIB1 request, monitoring a physical downlink control channel (PDCCH) associated with the SIB 1; and, on the basis of detecting the PDCCH, receiving a physical downlink shared channel (PDSCH) for carrying the SIB1.

The invention provides a multi-mode cooperative sensing power station high-risk operation inspection method and system, and relates to the technical field of video recognition, and the method comprises the steps: activating an unmanned plane and a quadruped robot after a power station operation task is started; starting a video acquisition unit, and establishing a synchronous video stream; carrying out fusion alignment with the global reference coordinate system through an external synchronization signal; inputting the video sequence of the fused view angle into a multi-view angle action behavior recognition network, and establishing a dangerous behavior grade score; auditory data and olfactory data of the quadruped robot are obtained, and linkage abnormity is established; and polling abnormity is reported according to linkage abnormity and dangerous behavior grade scores. Through the method and the device, the technical problem of low inspection efficiency caused by difficulty in comprehensively identifying potential risks in a dynamic environment due to limitation of a single sensing mode is solved, and the inspection efficiency of a power station is improved by fusing multi-mode data, timely finding and processing the potential risks and improving the accuracy of video and audio identification.

Various embodiments herein provide techniques for sidelink (SL) communication on unlicensed spectrum. For example, embodiments provide techniques for a physical sidelink feedback channel (PSFCH) and / or a SL synchronization signal block (S-SSB), such as techniques related to a listen-before-talk (LBT) procedure and / or occupied channel bandwidth (OCB) requirements. Other embodiments may be described and claimed.

The invention discloses a repetition-frequency-adjustable high-energy nanosecond laser and a working method thereof, and belongs to the technical field of lasers. The laser comprises a synchronizing signal controller, a nanosecond seed source, an electro-optical selection system, a first end face pumping amplification stage, a second end face pumping amplification stage and a side face pumping bi-pass amplification stage, the synchronizing signal controller is adopted to generate a clock reference signal, a frequency division synchronizing signal and a clock synchronizing signal, and integrated control over system signals is achieved. The clock reference signal is used for triggering the seed source to generate nanosecond seed light pulses, the frequency division synchronizing signal is optimized and adjusted to control the electro-optical menu system to screen out frequency division seed light pulses, and the repetition frequency of the seed light pulses is adjustable. Meanwhile, a pulse pumping mode MOPA structure is adopted, the repetition frequency of each amplification stage pumping light pulse and the repetition frequency of the non-frequency-divided seed light pulse are kept consistent through a clock synchronization signal, it is ensured that the heat effect of the whole system is stable, and repetition frequency adjustable nanosecond laser output with high energy and good reliability is achieved.

A method of a terminal may comprise: receiving on-demand synchronization signal block (SSB) transmission configuration information from a first base station to which the terminal is connected; and receiving an on-demand SSB from a second base station based on the on-demand SSB transmission configuration information, wherein the on-demand SSB transmission configuration information includes at least one of capability information of the second base station, on-demand SSB resource information, a number of on-demand SSB transmissions, on-demand SSB transmission indication, or channel state information (CSI) configuration information.

The invention provides a time division duplex multi-carrier synchronous transmission method based on 5G, which is used for solving the problems of inflexible carrier time slot allocation and inaccurate time delay compensation in synchronous transmission. By dynamically adjusting time slot allocation and working frequency bands of carriers in a network control center, the method optimizes network loads and reduces cross interference; the time delay of each carrier is compensated in real time by adopting a synchronous signal calibration algorithm, so that strict alignment of transmission time slots is ensured; the transmitting end dynamically adjusts the transmitting power according to link state information, and the receiving end reduces interference and signal attenuation through a multi-carrier cooperative interference management and multi-path delay compensation mechanism; and a receiving end performs joint decoding based on channel estimation and integrates demodulation signals of all carriers, so that the transmission efficiency and the signal quality of the 5G network are improved. The method is suitable for a base station system and a base station and repeater extension coverage system, and is especially suitable for a distributed wireless system including an optical fiber remote distributed system, a cable remote frequency shift repeater system and the like.

The invention relates to the technical field of satellite communication, in particular to a time synchronization method, device and equipment for satellite communication, a medium and a program product. A terminal receives a synchronization signal block broadcasted by a satellite base station to perform preliminary synchronization, and decodes a main information block broadcasted by the satellite base station to obtain a cell-level public timing advance parameter and a time-frequency resource; selecting a lead code and a time-frequency resource in combination with a cell-level public timing advance parameter, initiating a random access request, and sending a first message to a satellite base station; receiving a second message from the satellite base station, wherein the second message comprises a timing advance instruction fed back according to the detection result of the lead code; and adjusting uplink timing synchronization according to the timing advance instruction, and sending a third message to the satellite base station through the physical uplink shared channel. According to the invention, on the premise that an existing preamble format and a timing advance indication range do not need to be changed, a terminal without GNSS capability can also realize initial random access and maintain uplink time synchronization.

A wireless device transmits radio resource control (RRC) messages comprising capability parameters indicating support, for a layer 1 and / or layer 2 triggered mobility (LTM) procedure and within a measurement window, for synchronization signal block (SSB) based inter-frequency layer 1 reference signal received power (RSRP) measurement of a candidate cell with a received time difference, between the candidate cell and a serving cell, larger than a cyclic prefix (CP) length. The device receives RRC messages indicating a measurement window. The device receives a command indicating an uplink transmission of a L1 RSRP report of the candidate cell. The first cell and the candidate cell are inter-frequency configured. The device transmits the L1 RSRP report measured over one or more first SSBs of the candidate cell. The first SSBs are received: via the candidate cell with the received time difference being greater than the CP length, and within the measurement window.

A wireless device receives, via a serving cell, one or more radio resource control (RRC) messages comprising configuration parameters of a candidate cell for a layer 1 / 2 triggered mobility (LTM) procedure. The configuration parameters indicate a transmission power of a synchronization signal block (SSB) transmitted via the candidate cell. The wireless device receives a physical downlink control channel (PDCCH) order comprising a cell indicator indicating the candidate cell, an SSB index indicating the SSB of SSBs of the candidate cell, and a preamble index of a preamble. The wireless device transmits, via a physical random access channel (PRACH) occasion corresponding to the SSB of the candidate cell, the preamble using an uplink transmission power based on a measurement of a pathloss. The pathloss is determined based on the transmission power of the SSB, and a layer 3 filtered reference signal received power (RSRP) of the SSB.

This disclosure is directed to methods, systems, and devices related to wireless communication, and more specifically, to prolong battery life by using ultra-low power mechanism that can support low latency. A method of wireless communication, comprising receiving, by a wireless communication device, from a network device, a configuration of a low power wake-up signal (LP-WUS) in a serving cell; determining, by the wireless communication device, a reception of signals according to the configuration of LP-WUS; and wherein the signals contains a LP-WUS, a synchronization signal block (SSB) or a paging message.

The invention discloses an improved satellite navigation authorization signal real-time estimation device, which comprises a public signal tracking module used for tracking a public pseudo code of a satellite navigation signal in real time and outputting the public pseudo code of the satellite signal, a navigation message, baseband data after carrier stripping and a chip synchronization signal; the authorization signal purification module is used for estimating a pseudo code of the authorization signal in real time; and the public signal tracking module is connected with the authorization signal purification module. According to the method, the navigation message and the public pseudo code information of each code period are demodulated firstly, and then pseudo code estimation of M baseband constellations is improved into pseudo code estimation of M / 2 baseband constellations under the assistance of the navigation message and the public pseudo code, so that the bit error rate of authorized pseudo code estimation is reduced, and the accuracy of pseudo code estimation is improved. And the high gain requirement of the satellite navigation authorization signal estimation device on the receiving antenna is reduced.

A UE may receive a time resource pattern including a first set of time resources and a second set of time resources that are non-overlapping in a time domain with the first set of time resources, each time resource of the first set of time resources configured with a subband full-duplex (SBFD) configuration, and each time resource of the second set of time resources configured with a non-SBFD configuration. A UE may receive a synchronization signal block (SSB) configuration including one or more periodic SSB occasions. A UE may adjust at least one of an SSB measurement or an uplink transmission in one or more symbols including an SSB occasion, of the one or more periodic SSB occasions, overlapping with a time resource of the first set of time resources.

The invention relates to the technical field of automatic detection, in particular to a multi-station PCBA (printed circuit board assembly) detection method based on machine vision, which comprises the following steps: acquiring a multi-station reference pulse period, dividing a time window, comparing starting time difference, controlling image acquisition to synchronize, locally imaging a PCBA based on a synchronizing signal, extracting temperature response of a welding spot, and constructing a heat conduction path. Mapping to a visible light image, evaluating welding spot symmetry, extracting welding spot hue change, marking abnormal frames, recording defect path nodes, and generating a defect path structure. According to the method, the temperature response coordinate points in the welding spot area are extracted and the heat conduction direction vector path is constructed, so that the welding quality is evaluated more carefully and accurately, the thermal grid chart is mapped to the visible light image frame, the image analysis process is further optimized, the defect detection accuracy is enhanced, and the potential defect area is effectively identified; the efficiency and reliability of PCBA board detection are significantly improved, and powerful technical support is provided for high-quality production.

The invention relates to the technical field of high-frequency signal modulation, and discloses a high-frequency carrier synchronization signal modulation system. A carrier distortion compensation module of the system constructs a model based on a historical transmission data set, captures a phase jitter parameter, a spectrum leakage component and a modulation pulse sequence of a transmitting end carrier in real time, and outputs a reconstructed baseband parameter; the multi-dimensional distortion analysis module compares the reconstructed baseband parameter with a receiving end demodulation baseband parameter through composite difference detection, and generates a channel-level distortion coefficient tensor; the topological positioning network module is used for positioning signal out-of-step physical nodes and generating a probability distribution thermodynamic diagram by combining impedance characteristics of transmission nodes and signal path delay information; and the adaptive modulation strategy module starts a multi-band carrier injection mode for the high-probability out-of-step nodes according to the abnormal probability gradient of the thermodynamic diagram, and applies a phase disturbance test to adjacent transmission links. The system can improve the adaptability and accuracy of high-frequency carrier signal synchronous modulation.

A wireless device receives one or more radio resource control (RRC) messages indicating a handover from a first cell to a second cell and a synchronization signal block (SSB), of the second cell, for receiving a downlink control information (DCI) from the second cell. The wireless device receives, from the second cell and based on a demodulation reference signal (DMRS) antenna port being quasi co-located with the SSB, the DCI scheduling an uplink transmission, wherein the uplink transmission is an initial uplink transmission, to the second cell, after receiving the one or more RRC messages indicating the handover. The wireless device transmits, to the second cell and based on the SSB indicated by the one or more RRC messages, the uplink transmission.

Methods and apparatuses for an operation for triggering on-demand synchronous signal / physical broadcast channel block (SSB) or a system information block 1 (SIB1) in a wireless communication system. A method of a user equipment (UE) in a wireless communication system includes receiving a first physical downlink shared channel (PDSCH) from a base station (BS) and determining, based on an indication in the first PDSCH, that a set of synchronization signals and physical broadcast channel (SS / PBCH) blocks is activated for transmission from the BS. The method further includes determining a time domain offset with respect to the first PDSCH, determining that the set of SS / PBCH blocks is to be transmitted after the time domain offset and receiving a SS / PBCH block in the set of SS / PBCH blocks.

Methods and apparatuses for an operation for configurations for on-demand SIB1 in a wireless communication system is provided. A method of a user equipment (UE) includes receiving, from a cell of a first base station (BS), a first synchronization signals and physical broadcast channel (SS / PBCH) block; determining, based on an indication in a physical broadcast channel (PBCH) of the first SS / PBCH block, a first value of kSSB; and determining, based on the first value of kSSB, whether the cell is associated with an on-demand system information block 1 (SIB1). The method further includes transmitting, based on a determination that the cell is associated with the on-demand SIB1, a request for the on-demand SIB1 to a second BS and receiving the on-demand SIB1.

Wireless communications systems and methods related to communicating control information are provided. A method of wireless communication performed by a user equipment (UE) may include receiving, from a base station (BS), a configuration for a channel state information (CSI) report setting, wherein a report quantity configured by the CSI report setting comprises at least measured channel characteristics of channel state information reference signal (CSI-RS) resources or synchronization signal block (SSB) resources for channel measurement associated with the CSI report setting and parameters of predicted channel characteristics associated with the CSI-RS resources or the SSB resources for channel measurement associated with the CSI report setting and transmitting, to the BS, a CSI report based on the CSI report setting.

Various aspects of the present disclosure relate to a UE that receives an indication of one or more system information transmission repetition periodicity values corresponding to a respective subset of synchronization signal blocks (SSBs) within a burst of SSBs. The UE selects at least one SSB from the burst of SSBs, and receives a system information message via one or more physical downlink control channel (PDCCH) monitoring occasions in a search space set for the system information message. The one or more PDCCH monitoring occasions, for instance, are determined based on a system information transmission repetition periodicity value of the one or more system information transmission repetition periodicity values, and the system information transmission repetition periodicity value corresponds to the selected SSB. The UE can implement wireless communication using system information determined from the received system information message.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a network entity, one or more synchronization signals of a synchronization signal block (SSB). The UE may receive, from the network entity, a system information message indicating a received power threshold associated with a two-step random access procedure. The UE may transmit, to the network entity in accordance with the two-step random access procedure, a first message (e.g., msgA) of the two-step random access procedure. The first message may include a first number of repetitions of a random access preamble, a second number of repetitions of a random access payload, or both. The UE may determine the first number of repetitions and the second number of repetitions based on measurements of the one or more synchronization signals and the received power threshold indicated by the system information message.

Techniques described herein include solutions for configuring and using parallel measurement gaps with the same gap type for both synchronization signal block (SSB) based and channel state information reference signal (CSI-RS) based measurements associated to the same frequency layer. A User Equipment (UE) may indicate its capability to support parallel measurement gaps to a non-terrestrial base station. The capability may be indicated individually for SSB based and CSI-RS based measurements, or in a combined format for both SSB based and CSI-RS based measurements. The UE receives a measurement gap configuration to configure the parallel measurement gaps and performs measurements accordingly. The measurement gaps for SSB based measurements and the measurement gaps for CSI-RS based measurements may be considered as associated to the same or different frequency layers depending on various conditions.

A method of transmitting a random access channel (RACH) by a user equipment (UE) in a wireless communication system is disclosed. The method includes receiving a synchronization signal block (SSB) on a first carrier among a plurality of carriers, determining a second carrier for transmitting the RACH among the plurality of carriers, and transmitting the RACH on the second carrier.

Apparatus, methods, and computer-readable media for facilitating SSB-subset selection based RACH with base station-side beam prediction are disclosed herein. An example method for wireless communication at a user equipment (UE) includes measuring one or more synchronization signal block (SSB) subsets of an SSB burst set including multiple SSBs grouped into SSB subsets. The example method also includes transmitting, to a base station, a random access message indicating information for at least one SSB subset from the one or more SSB subsets and measurement information for one or more SSBs of the at least one SSB subset.

A method, e.g. performed by a user equipment (UE) connected to a first cell of a first distributed unit (DU) of a first base station is disclosed. The method comprises receiving configuration information for measuring at least part of a synchronization signal block (SSB) and / or a Channel State Information-Reference Signal (CSI-RS) associated with a physical cell ID (PCI) of a second cell and for observing information related to a mobility group indicator (MGI); measuring the at least part of SSB and / or CSI-RS that is associated with the PCI; and observing the information related to the MGI, wherein a combination of the measured at least part of SSB and / or CSI-RS and the information related to the MGI enables to determine at least one of: whether the second cell is an intra-DU cell, an inter-DU cell or an inter-base station cell with respect to the first cell. Corresponding methods performed by units of the first base station are disclosed. Further, a corresponding system and corresponding apparatuses, computer programs, and computer readable media are disclosed.

Embodiments of this application provide a communication method, apparatus, and system. In the method, a structure of a time-frequency resource is redesigned, or repeated transmission of a synchronization signal block is supported, or channel access is performed on a plurality of resources, and a transmission manner of the synchronization signal block is provided, so that a channel access success rate is improved, coverage is enhanced, and communication reliability is further improved.

Methods, systems, and devices for wireless communications are described. A transmitting user equipment (UE) may transmit repetitions of sidelink synchronization signal blocks (S-SSBs) in the time domain to a receiving UE to increase signal strength and reliability. The transmitting CE may receive a message from the network which indicates an S-SSB timing configuration for a timing window including multiple S-SSB transmission occasions within an S-SSB period, along with an indication of a periodicity and a duration of the timing window. The transmitting UE may then participate in at least one listen-before-talk (LBT) procedure during the timing window to access the sidelink channel. In such cases, the number of S-SSB occasions in the timing window may be numerous to compensate for possible failure of at least one LBT procedure. Based on a successful outcome of at least one LBT procedure, the UE may transmit one or more repetitions of the S-SSB.