20 results about "Cell synchronization" patented technology

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.

Disclosed in the present application are a communication method and a communication apparatus. The method comprises: performing signal measurement on a plurality of beams of a first cell; and in response to at least one first beam of N beams, sending a measurement report to an access network device, the N beams being N beams among the plurality of beams, N being an integer greater than 1, the first beam being a beam meeting a reporting condition of a measurement event, and the measurement report comprising at least one of the following: the measurement event met by the first beam, an identifier of the first beam, signal quality of the first beam and an identifier of a cell corresponding to the first beam. The method described in the present application helps terminal devices to perform measurement reporting in a timely manner, thereby helping the terminal devices to perform cell synchronization or cell handover in a timely manner.

The invention belongs to a cell culture technology in the field of biomedicine, and particularly relates to a liver organoid for traditional Chinese medicine screening and toxicity assessment and a construction method and application thereof. The construction method comprises the following steps: carrying out plane multiplication culture on pluripotent stem cells, then digesting and subculturing, and repeating to obtain a cell culture medium; a pluripotent stem cell group which is uniform in cell morphology and free of spontaneous differentiation is obtained; performing two-dimensional plane directional induction on the pluripotent stem cell population to enable cells to synchronously and uniformly receive differentiation signals to obtain hepatogenic mother cells; culturing the obtained hepatic mastocytes by using a culture medium E under a three-dimensional suspension condition to promote the specificity and balling of the hepatic lineage; the culture medium E is an Advanced DMEM / F12 which comprises 1 to 5 [mu] M of RA, 2 to 10 [mu] M of Y-27632, 0.5 to 1 [mu] M of beta-nicotinamide mononucleotide, 5 to 10 [mu] M of senkyunolide A, B27 and N2; and then replacing the culture medium to further mature and functionalize the hepatocytes to obtain the liver organoid, and the obtained liver organoid has high stability, high uniformity, good survival rate and mature hepatocyte functions.

A cell synchronization method, an apparatus, a device, and a storage medium are provided. The method includes: determining first information, where the first information includes first synchronization information, the first synchronization information is used by a first communication device to perform cell synchronization, second synchronization information in the first synchronization information is used by a second communication device to perform cell synchronization, and a type of the first communication device is different from a type of the second communication device. A first apparatus sends the first information. After sending the first synchronization information to the first communication device, the first apparatus does not separately send the second synchronization information to the second communication device. This reduces signaling overheads during cell synchronization, and further improves communication performance.

A cell synchronization method, apparatus and device, and a storage medium. The method comprises: determining first information, the first information comprising first synchronization information, the first synchronization information being used for a first communication device to perform cell synchronization, second synchronization information in the first synchronization information being used for a second communication device to perform cell synchronization, the type of the first communication device being different from the type of the second communication device; the first device transmits the first information. After the first device sends the first synchronization information to the first communication equipment, the second synchronization information is not independently sent to the second communication equipment, so that the signaling overhead during cell synchronization is reduced, and the communication performance is improved.

Embodiments of the present disclosure relate to secondary cell synchronization for inter-band carrier aggregation. In one aspect, an apparatus determines a receive time difference between a target secondary cell and an active serving cell of a terminal device associated with an inter-band carrier. The apparatus determines whether the receive time difference is within a threshold. If the reception time difference is within a threshold, the apparatus determines that synchronization information on the active serving cell is to be reused for the target secondary cell. Thus, an improved network power saving mechanism is provided for secondary cell synchronization with synchronization-free signal block operation for inter-band carrier aggregation.

This application provides a cell synchronization method, system, storage medium, and program product, applicable to the field of communication technology. In response to an event of switching from a source cell to a target cell, a reference point timing difference is obtained. Based on a first transmission delay, a second transmission delay, the start time of the terminal's source cell frame, and the reference point timing difference, a downlink timing reference value for the target cell is calculated. If the signal quality of the source cell is greater than a preset signal quality threshold, the downlink timing reference value is determined as the downlink timing of the target cell. If the signal quality of the source cell is less than or equal to the preset signal quality threshold, the downlink timing reference value is used as a reference value to search for the synchronization signal of the target cell within a preset time window to obtain the downlink timing of the target cell. This reduces the processing latency of cell synchronization during cell synchronization and ensures service continuity.

The present application relates to the technical field of plant breeding, and discloses a method for efficiently inducing peony subterranean bud polyploidy and application thereof, comprising subterranean bud disinfection, cell synchronization, minimally invasive pretreatment, preparation of CS- Alg / PPy photothermal response slow-release microspheres, loading of composite inducer, microsphere implantation and photothermal regulation induction, polyploidy identification screening and transplanting, wherein the composite inducer comprises colchicine, 6-BA and graphene quantum dots, can block chromosome separation, realize cell chromosome doubling, regulate growth point cell division, simultaneously repair cell damage, improve bud survival rate, assist photothermal regulation to realize precise drug release, and promote expression of polyploid plant excellent traits. The method has high induction rate, high homozygosity and high bud survival rate, is suitable for cultivation of ornamental, cut flower, medicinal and stress-resistant peonies, and is advanced and practical in technology.

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. According to one embodiment of the present invention, an operation method of a base station supporting a sync cell and a data cell in a wireless communication system is disclosed. The method of the base station may comprise the steps of: transmitting, to a terminal, a radio resource control (RRC) connection release message including a synchronization cell list for at least one synchronization cell; transmitting a synchronization cell synchronization signal block (SSB) or a synchronization cell system information block (SIB) to a terminal through the synchronization cell; and activating one of the data cells that has received the wake-up signal from the terminal, and transmitting the data cell SSB or the data cell SIB to the terminal through the activated data cell.

The invention discloses a switching method and device, relates to the field of wireless communication, and is used for completing cell synchronization between a terminal and a switched target cell. The method can be applied to switching of a terminal from a first network device to a second network device. The method comprises the following steps: connecting with a first cell through the first network device; performing downlink synchronization with a downlink synchronization signal of a second cell sent by a second network device; and connecting with the second cell through the second network equipment. Wherein the first cell and the second cell have the same cell identifier.

In a non-geostationary orbit (NGSO) satellite mobile communication system, a communication device receives a synchronization signal block (SSB), which is subjected to partial pre-compensation, from an NGSO satellite transmitter through a downlink (DL) beam, and then transmits the received synchronization signal block (SSB) to the NGSO satellite transmitter through the downlink (DL) beam. And realizing cell synchronization with the NGSO satellite transmitter by using the SSB subjected to partial pre-compensation. A center frequency of a primary synchronization signal and a center frequency of a secondary synchronization signal within the partially pre-compensated SSB are pre-offset by the NGSO satellite transmitter by an integer number of subcarriers relative to a center frequency of the partially pre-compensated SSB to achieve a correlation with movement of the NGSO satellite transmitter relative to the coverage on the earth of the DL beam According to the method, partial pre-compensation of Doppler shift (DS) is carried out. Even if Doppler frequency offset is large due to high mobility of an NGSO satellite, cell synchronization can be simplified.

Embodiments of the present disclosure relate to the technical field of communications, and provide a synchronization signal transmitting method, a device, a storage medium, and a program product, capable of reducing interference during inter-cell synchronization signal transmission. The method comprises: receiving a synchronization signal, wherein the synchronization signal is sent on the basis of an association relationship, the association relationship includes an association relationship between a plurality of first resource indexes of the synchronization signal and a plurality of spatial domain resource indexes of the synchronization signal, and the association relationship is determined on the basis of a second resource index.

The application discloses a cell synchronization searching method, device and terminal, and belongs to the technical field of communication. The method comprises the following steps: receiving time domain data; according to a preset frame header position, first sub-time domain data with a target short window length is intercepted from the time domain data, wherein the target short window length is smaller than the time domain length of the time domain data; the first sub-time domain data is subjected to a sliding correlation processing of a primary synchronization signal (PSS) module to determine N PSS peak values, wherein N is an integer greater than 1; according to the N PSS peak values, Q secondary synchronization signal (SSS) peak values are determined, wherein Q is an integer greater than 1; and based on N PSS receiving sequences corresponding to the N PSS peak values and Q SSS receiving sequences corresponding to the Q SSS peak values in the first sub-time domain data, a physical broadcast channel (PBCH) signal is demodulated. The application can improve the efficiency of cell synchronization searching.

The application relates to the field of satellite communication and discloses a space-air communication system and a frequency offset correction method of the space-air communication system. The method comprises the following steps: a satellite transmitting end calculates a beam direction vector based on received beam center position information, calculates a Doppler frequency offset pre-compensation value based on ephemeris information, and performs Doppler frequency offset pre-compensation on a transmitting signal; a ground receiving end establishes initial time synchronization and cell synchronization with the satellite transmitting end, demodulates a system information block, and obtains satellite ephemeris information; the ground receiving end performs frequency offset equation fitting based on self position information and satellite ephemeris information, and obtains a frequency offset fitting equation; the ground receiving end calculates a frequency offset estimation value, corrects the frequency offset estimation value based on the frequency offset fitting equation, and obtains a frequency offset correction value. The application provides an efficient frequency offset tracking method which can integrate ephemeris information, synchronization information, spatial position and dynamic state equation, so as to solve the problem of inaccurate frequency offset estimation and compensation in low-orbit satellite communication.

A user entity (UE) connected to a base station (BS) using a current cell served by a first satellite receives information from the BS, including auxiliary information for a cell switchover from the current cell to a cell served by a second satellite. This information is received before a stop time, which indicates when the current cell will cease supplying the UE. The UE performs the cell switchover from the current cell to the cell served by the second satellite, using at least the auxiliary information to locate a cell synchronization block(s) for the cell served by the second satellite. The BS transmits the information, including the auxiliary information for a cell switchover from the current cell to a cell served by a second satellite. The BS shuts down the current cell at a stop time.

The invention discloses a method for observing cyanobacteria cell communication by using an FRAP technology, and relates to the technical field of biological research, and the method comprises the following steps: culturing cyanobacteria; pretreating the cells; performing fluorescent dyeing and washing; fixing the sample; carrying out sample adaptation treatment; carrying out FRAP experiment observation; controlling an observation program; extracting and preprocessing data; processing and analyzing data; and verifying and applying a result. The problem of sample observation displacement is thoroughly solved through an innovative agar back-off fixation method, background fluorescence interference is eliminated by combining cell synchronization enrichment and multiple rounds of mild washing, and imaging and bleaching parameters adaptive to cyanobacteria light sensitivity characteristics are customized to balance signal quality and cell activity; meanwhile, a complete analysis process from sample adaptation and program automation control to data noise reduction calibration and nonlinear fitting is established, core parameters of communication dynamics are accurately extracted, and stable, accurate and quantitative observation of the communication dynamic process between cyanobacteria cells is achieved.

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may be configured to receive, via a serving cell, an indication of a transmit configuration indicator (TCI) state for communicating with a candidate cell, where the TCI state is associated with a quasi-co-location (QCL) source indicating that spatial resources used by the UE for communicating with the candidate cell are quasi-co-located with reference signals of the candidate cell. The UE may receive, via a serving cell, first control information indicating an association between a TCI state and a first resource for receiving a synchronization signal block (SSB) from a candidate cell. The UE may then communicate one or more messages with the candidate cell using a spatial resource, wherein the spatial resource is based at least in part on an association between the first resource and the TCI state.

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for multiplexing and prioritization techniques for uplink signaling and non-serving cell synchronization signals. In some aspects, a user equipment (UE) and a network entity may support a prioritization rule according to which the UE and the network entity may enable uplink multiplexing with a set of non-serving cell synchronization signal blocks (SSBs). For example, an uplink signal and a set of non-serving cell SSBs may be scheduled for the UE and may at least partially overlap in time and the UE may prioritize one of the uplink signal or the set of non-serving cell SSBs in accordance with the prioritization rule. The prioritization rule may be associated with a scheduling offset of the uplink signal or may be associated with whether the set of non-serving cell SSBs are indicated for measurement at the UE.

The invention discloses a communication method and a communication device. The method comprises the following steps: performing signal measurement on a plurality of beams of a first cell; and in response to at least one first beam in the N beams, sending a measurement report to the access network device, the N wave beams are N wave beams in a plurality of wave beams, and N is an integer greater than 1; the first beam is a beam meeting the reporting condition of the measurement event; the measurement report comprises at least one of the following items: a measurement event satisfied by the first beam, an identifier of the first beam, signal quality of the first beam, and an identifier of a cell corresponding to the first beam. Based on the method described by the invention, the terminal equipment can carry out measurement report in time, so that the terminal equipment can carry out cell synchronization or cell switching in time.

A UE connected to a BS using a current cell served by a first satellite receives information from the BS, the information including assistance information for a cell transition from the current cell to a cell served by a second satellite. The information is received prior to a stop time indicating when the current cell will stop serving the UE. The UE performs a cell transition from the current cell to a cell served by the second satellite using at least the assistance information to find cell synchronization block (s) for the cell served by the second satellite. The BS transmits information from the BS, the information including assistance information for a cell transition from the current cell to a cell served by the second satellite. And the BS closes the current cell at the stop time.