58 results about "Cell synchronization" patented technology

A cell synchronization method and apparatus, a device, and a storage medium. The method comprises: determining first information, wherein the first information comprises first synchronization information, the first synchronization information is used for a first communication device to perform cell synchronization, second synchronization information in the first synchronization information is used for a second communication device to perform cell synchronization, and the type of the first communication device is different from the type of the second communication device; and a first apparatus sending the first information. After the first apparatus sends the first synchronization information to the first communication device, the second synchronization information is not separately sent to the second communication device, thereby reducing the signaling overhead during cell synchronization and improving the communication performance.

A method and apparatus for receiving a broadcast configuration indicating when a change in a RAN function termination occurs is provided, for example, by a timer value. The broadcast configuration may be received from a satellite, blimp or other moving transmitter. A dedicated configuration may also be received from the serving cell. The dedicated configuration may include a preamble, a transient configuration and an indication of a layer 2 behavior. If a WTRU detects a change in RAN function termination, the WTRU may suspend any uplink data transmissions, apply the transient configuration and transmit the preamble to a target cell. The WTRU may synchronize with the target cell and apply the layer 2 behavior.

The present disclosure provides procedures for early synchronization based on Idle mode measurements to enable fast connection establishment and resumption on transition to a Connected mode. When transitioning (120) to a Connected state, the UE selects one or more cells / frequencies for which in addition to the target cell configured / activated by the network to initiate early synchronization (140) prior to transition to the Connected state. When the UE receives (150) a message from the network requiring the UE to synchronize with a target cell in a target frequency, the UE determines (160) if the message from the network indicates that the UE shall configure or add a target cell, that is not the PCell, for which the UE has synchronized and, if so, uses the synchronization information to initiate (170) a random access procedure towards the target cell configured / activated by the network.

The present disclosure provides a communication method, apparatus, electronic device, and computer readable storage medium. The method improves the Measurement Timing Configuration SMTC of a cell synchronization signal, the improved SMTC including SSB information of a serving beam cell and a neighbour beam cell, the neighbour beam cell including other beam cells covered by other beams, other than the serving beam, of a first non-terrestrial node covering the serving beam cell and / or beam cells covered by beams of a second non-terrestrial node adjacent to the first non-terrestrial node. Enabling the UE to obtain, in a timely and reliable manner, the SSB signals of the beam cells covered by beams, other than the serving beam, of a first non-terrestrial node and / or the beam cells covered by beams of the second non-terrestrial node for cell measurement in the non-terrestrial communication network.

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

SSB indices are appropriately reported. A user terminal according to an aspect of the present disclosure includes a control section that determines an assumption utilized for a number of synchronization signal blocks (SSBs) actually transmitted in a given carrier, based on whether the given carrier is assumable to perform inter-cell synchronization, and a transmitting section that transmits information related to indices of SSBs detected.

The invention discloses a cell switching method, device and system, relates to the technical field of communication, and aims to solve the problem that in the cell switching process, after a terminal disconnects data transmission with a source base station, when synchronous measurement is carried out on synchronous resources of all target neighbor cells to realize cell switching, the switching time is too long, so that data interruption and even terminal call drop are caused. The method comprises the following steps that: a source base station acquires switching time and / or a target synchronization resource, and indicates the switching time and / or the target synchronization resource to a terminal, so that the terminal starts to perform synchronous measurement on the target synchronization resource according to the switching time and / or the target synchronization resource when the switching time arrives, thereby realizing cell synchronization and accessing a target cell. And the inter-cell switching is completed. The scheme of the invention can be widely applied to the fields of communication technology, artificial intelligence, Internet of Vehicles, smart home networking and the like.

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.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may obtain synchronization with a primary cell of a wireless network. The wireless communication device may receive an indication to activate a secondary cell of the wireless network. The wireless communication device may receive a reference signal (RS) of the secondary cell. The wireless communication device may obtain synchronization with the secondary cell based at least in part on an offset between the RS of the secondary cell and a reference time of the primary cell, the reference time based at least in part on the synchronization with the primary cell. The wireless communication device may communicate via the secondary cell based at least in part on the synchronization with the secondary cell. 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.

Disclosed in the present application are a cell conversion method and apparatus, a terminal, a network device and a storage medium. The method comprises: a terminal performing cell conversion, and / or receiving first information sent by a network device, wherein cell conversion time comprises at least interruption time, and the first information comprises at least one of the following: information indicating that the terminal preferentially performs serving cell synchronization, information indicating that the terminal preferentially performs TCI state activation of a neighboring cell, and a cell conversion command.

The invention discloses a cell conversion method and device, a terminal, network equipment and a storage medium, and the method comprises the steps that the terminal carries out cell conversion, and / or receives first information sent by the network equipment; wherein the cell switching time at least comprises interruption time; the first information comprises at least one of the following information: indication information that the terminal preferentially performs service cell synchronization, indication information that the terminal preferentially performs TCI state activation of a neighbor cell, and a cell conversion command.

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a message from a first non-terrestrial network cell indicating cell synchronization information for a second non-terrestrial network cell. In some examples, the cell synchronization information may indicate whether the first non-terrestrial network cell and the second non-terrestrial network cell are synchronized at a reference point. Additionally, or alternatively, the cell synchronization information may indicate a timing offset value between a first uplink time synchronization reference point of the first non-terrestrial network cell and a second uplink time synchronization reference point of the second non-terrestrial network cell. The UE may calculate a timing associated with signaling from the second non-terrestrial network cell based at least in part on the cell synchronization information. The UE may receive one or more signals from the second non-terrestrial network cell based at least in part on the calculated timing.

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.

A system, method, and computer-program product includes implementing a cross-process queue within a single computer that is configured to transfer a data block between an operating system process executing a write operation and an operating system process executing a read operation, initializing in-memory cell indices within the cross-process queue that include a write operation index tracking index values of one or more cells within the cross-process queue that are available to write and a read operation index tracking index values of one or more cells within the cross-process queue that are available to read, and implementing a cell synchronization data structure tracking states of a plurality of cells of the index of cells of the cross-process queue.

Aspects of the disclosure provide techniques for enabling cell synchronization and timing adjustment management in layer 1 and layer 2 (L1-L2) centric mobility applications. A user equipment (UE) communicates with a network entity using one or more cells of a plurality of cells that are configured for mobility operations using layer 1 and layer 2 (L1-L2) centric signaling. The plurality of cells are grouped into one or more timing adjustment groups (TAGs). The UE updates timing advance of the plurality of cells per group according to the one or more TAGS.

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a wireless communication device may obtain synchronization with a primary cell of a wireless network. The wireless communication device may receive an indication to activate a secondary cell of the wireless network. The wireless communication device may receive a reference signal (RS) of the secondary cell. The wireless communication device may obtain synchronization with the secondary cell based at least in part on an offset between the RS of the secondary cell and a reference time of the primary cell, the reference time based at least in part on the synchronization with the primary cell. The wireless communication device may communicate via the secondary cell based at least in part on the synchronization with the secondary cell. Numerous other aspects are described.

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.

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

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.

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

A system, method, and computer-program product includes implementing a cross-process queue within a single computer that is configured to transfer a data block between an operating system process executing a write operation and an operating system process executing a read operation, initializing in-memory cell indices within the cross-process queue that include a write operation index tracking index values of one or more cells within the cross-process queue that are available to write and a read operation index tracking index values of one or more cells within the cross-process queue that are available to read, and implementing a cell synchronization data structure tracking states of a plurality of cells of the index of cells of the cross-process queue.

The invention provides a terminal access method, a base station, a terminal and a non-ground communication system, and the terminal access method applied to the base station comprises the steps: generating a cell synchronization auxiliary signal; wherein the cell synchronization auxiliary signal comprises a space-time synchronization signal and a frequency offset measurement signal; the space-time synchronization signal carries base station direction information and timing time information of the base station; the frequency offset measurement signal carries a pilot frequency sequence; and sending a cell synchronization auxiliary signal to the terminal to enable the terminal to demodulate the cell synchronization auxiliary signal, and performing terminal access based on the demodulated base station direction information, the timing time information and the pilot frequency sequence. According to the scheme, the base station direction information and the timing time information are integrated into the space-time synchronization signal, so that the terminal can complete direction alignment and symbol timing without acquiring dynamic parameters of the base station in advance, and the initial access success rate of the terminal can be improved.

An apparatus configured to process, based on signals received from a network, configuration information comprising a low-power synchronization signal (LP-SS), determine timing information based on the LP-SS and perform, using the determined timing information, Primary Synchronization Signal and Secondary Synchronization Signal (PSS / SSS) synchronization or measurement for a serving cell of a user equipment (UE).