106 results about "Cell search" patented technology

Methods, systems, and devices for wireless communications are described. Generally, the described techniques enable a first wireless device to scramble at least a portion of one or more frequency-modulated continuous wave (FMCW) signals (e.g., hybrid FMCW signals) using a scrambling identifier, which may enable a second wireless device to differentiate between FMCW signals based on identifying the scrambling identifier. For example, the first wireless device may scramble at least a portion of an upchirp signal, a downchirp signal, or both, of an FMCW signal. The second wireless device may identify the scrambling identifier based on attempting to descramble the scrambled portion of the FMCW signal using multiple candidate scrambling identifiers. In some examples, a scrambling pattern (e.g., which portion of the upchirp signal, downchirp signal, or both, is scrambled) of a hybrid FMCW signal may indicate information associated with the first wireless device.

The invention discloses a satellite-borne space-based measurement and control method based on a non-ground network and related equipment. The method is used for a satellite-borne space-based measurement and control device, the satellite-borne space-based measurement and control device is arranged on a low-orbit satellite platform, and the method comprises the following steps: respectively obtaining real-time orbit parameters of a low-orbit satellite, GNSS positioning information and a pre-stored high-orbit satellite coverage information table; based on the current orbit parameter, the GNSS positioning information and a high-orbit satellite coverage information table of a high-orbit satellite pre-stored or periodically updated from a satellite service computer, calculating a space-time relationship between the low-orbit satellite and a cell coverage range; and under the condition that it is predicted and determined that the cell coverage of the target high-orbit satellite is about to enter according to the time-space relationship obtained through calculation, waking up in advance and initiating cell search and a control flow of accessing at any time. The problems that an existing space-based measurement and control technology is high in construction cost, limited in multiple access capacity and poor in dynamic adaptability can be solved.

A terminal for performing an initial cell access, according to an embodiment of the present disclosure, receives a PBCH signal of a first cell via a cell search, receives SIB1-scheduling information on a CSS set related to the PBCH signal, and determines whether to perform a remaining access procedure on the first cell, on the basis of the SIB1-scheduling information, wherein the terminal is a second type terminal in which the capability is reduced to support a bandwidth narrower than that of a first type terminal, and the terminal may determine, as the second type terminal, whether an access to the first cell is allowed, on the basis of the state of a bit reserved so as not to be used by the first type terminal within the SIB1-scheduling information.

A user equipment (UE), a base station, a baseband processor or other network device can operate to perform an initial access to a satellite base station (e.g., a non-terrestrial network (NTN) ). The UE can perform a cell search during the initial access on an NTN band based on one of a plurality of synchronization signal block (SSB) periodicities that each map to a different NTN band ID, respectively, where the UE is an idle or inactive mode. A number of candidate values of the SSB periodicities can correspond to a different NTN band ID, or NTN region ID, respectively, according to a predefined association in one or more data sets.

The invention discloses locomotive broadband data access equipment based on a core board and an implementation method, and belongs to the technical field of subway wireless communication. The working process is as follows: after a linux system of a core board is started, a hard disk is loaded, an LTE broadband data module and a 5G NR broadband data module are driven to carry out frequency search and cell search, authentication registration is carried out in a limited working frequency band, a special bearer is established, then a network is continuously detected, and the detection result is obtained. The LTE broadband data module and the 5G NR broadband data module of the equipment can operate in an online state at the same time. The data volume for bearing the communication service is greatly improved, and the real-time performance of communication is greatly improved.

The present invention relates to determine a common application time-base for different positionally fixed wireless stations, which perform a timing application in different unsynchronized radio-access-network cells, a method comprises providing to the wireless stations a timing-report instruction. It instructs the wireless stations to perform a cell-search procedure and to determine a respective set of time synchronization information retrieved from any detected base station with reference to its respective time base. If more than one set of time synchronization information from a corresponding number of detected base stations has been retrieved, the wireless stations provides timing synchronization data indicative of the retrieved sets of time synchronization information from the detected base stations. An application server receives the at least one timing report and determines a common application time-base for the different detected base stations, using the different sets of timing synchronization data provided.

An arrangement for non-terrestrial communication networks, where a network node providing a cell transmits an indicator of upcoming change in the transmission of synchronization signals to a user equipment. Based on the received indicator the user equipment may determine whether to change the cell or to camp in the current cell. Similar indicator may be used during cell change procedure when determining whether to access the cell found in the cell search procedure or to re-initiate the cell search procedure for finding another cell.

Apparatuses, methods, and systems are disclosed for performing cell selection / reselection on a radio frequency associated with a network slice. One apparatus includes a processor and a transceiver that camps on a first frequency layer of a RAN while in a RRC idle state, the first frequency layer supporting a first set of network slices, where the first set of network slices is prioritized for use with a first frequency. The processor iteratively performs cell search on a second frequency layer while the apparatus is camped on the first frequency layer, the second frequency layer supporting a second set of network slices, where the second set of network slices is prioritized for use with a second frequency. The processor maintains in parallel the second frequency layer while in the RRC idle state.

One embodiment of the present disclosure relates to a device and a method for transmitting an uplink reference signal in an electronic device. The electronic device can include: a communication circuit for supporting a first bandwidth related to reduced capability and a second bandwidth greater than the first bandwidth; a processor; and a memory for storing instructions, such that when executed by the processor, the instructions instruct the electronic device to: identify whether a cell that does not support the reduced capability is present if a cell that supports the reduced capability is not retrieved through cell search; set the bandwidth of the electronic device to the second bandwidth if the cell that does not support the reduced capability is present; and, in response to the setting to the second bandwidth, access, through the communication circuit, the cell that does not support the reduced capability. Other embodiments are also possible.

Procedures, methods, architectures, apparatuses, systems, devices, and computer program products for network access in a wireless communications system using common signaling, such as synchronization signals, for multiple Radio Access Technologies (RATs). A wireless transmit / receive unit, WTRU, performs a cell search in the system, obtains first information indicative of whether spectrum sharing is configured in a cell discovered in the cell search and of available radio access technologies, RATs, in the discovered cell, in case the first information indicates that spectrum sharing is configured in the discovered cell, determines which of the of available RATs to access, obtains access configuration parameters for the determined RAT to access, and performs, using the access configuration parameters, a random-access procedure to access the RAT.

Techniques for performing a cell search for the presence of multiple cells in a frequency band are described. Each frequency band is segmented into sub-bands, each sub-band covering more than one raster scan (e.g., 100 kHz). Each segment has a predetermined center frequency for RF tuning. The number of tunable RF center frequencies can be equal to the number of segments in a frequency band. The techniques include obtaining IQ signals in a digital domain at a predefined RF center frequency. Further, the techniques include computing a matched filtering of PSS sequence with IQ samples of sub-bands with a predefined and predetermined waveform through matched filtering, and averaging correlations for smoothing the peaks that exceed a predetermined threshold to detect or reject the presence of a cell.

The invention discloses a wireless communication method and device, equipment and a storage medium, and relates to the technical field of communication. The method comprises: receiving an SSB sent by a network device in a first period, the first period being greater than or equal to 20 milliseconds (310). According to the method, the terminal equipment receives the SSB sent by the network equipment in the first period, the first period is larger than or equal to 20 ms, the SSB period is expanded to the first period, the terminal equipment can receive the SSB in the first period, cell search failure is avoided, and communication efficiency is improved.

Various solutions for optimal radio access technology (RAT) selection-based voice call fallback in mobile communications are described. The user equipment (UE) may receive a broadcast message from a serving cell. Specifically, the broadcast message is associated with an indication of quality of service (QoS) flow support for Internet protocol (IP) multimedia subsystem (IMS) communication service. Also, the UE may determine whether to initiate an inter-RAT cell or public land mobile network (PLMN) search based on the indication of QoS flow support for IMS communication service. As the voice call fallback can be performed by selecting the optimal RAT, the inefficiency and latency introduced by multiple, sequential fallback attempts can be prevented.

The invention discloses a cell searching method and device, communication equipment, a storage medium and a computer product. The method comprises the following steps: roughly scanning a data block received in a preset time window to position an area in which at least one synchronization signal block possibly exists; in the area, searching a main synchronization signal through a sliding window with frequency offset stepping, and establishing a main synchronization signal candidate list; secondary synchronization signal detection and cell identification calculation are carried out on primary synchronization signals in the primary synchronization signal candidate list to generate a cell candidate list; determining one synchronization signal block in each cell based on the cell candidate list; determining other synchronization signal blocks of one cell in the data block based on one synchronization signal block in one cell, and determining the strongest synchronization signal block in each cell; and reporting the cell list containing the information of the strongest synchronization signal block. According to the method, rough positioning and fine searching are combined, so that the calculation complexity and time of cell searching can be remarkably reduced.

A user equipment (UE) in a cellular network can estimate a likelihood of a negative performance impact of modifying a duration of a paging cycle for the UE when operating in an idle mode. The UE then selectively modifies the paging cycle based on the estimated likelihood. In some cases, the UE determines the likelihood of the negative performance impact based upon a mobility mode of the UE, such as a stationary mode or a non-stationary mode. In some cases, the UE determines the likelihood of the negative performance impact based upon one or more deployment parameters such as a paging latency.

This disclosure describes schemes for synchronization block design and Time index indication. Considering some scenarios, like NTN, where there are lower workable SNR and larger CFO. However, to ensure quick cell search in such scenarios, novel schemes for synchronization block design and Time index indication are necessary. This disclosure proposes methods for enabling UE to quickly cell search and detect the synchronization signal and information, so that to ensure better communication system.

The invention relates to a communication processing method and device, equipment and a storage medium. The method comprises the following steps: receiving a paging message sent by network equipment; when the terminal equipment is in a preset network searching scene, determining whether a service cell in which the terminal equipment currently resides is in a preset cell list or not; and when the service cell is not in the preset cell list, processing the paging message, and synchronously carrying out cell network searching corresponding to the preset network searching scene. Therefore, the technical problems that the terminal equipment cannot manually search the network for a long time and cannot normally use the communication service as soon as possible in the prior art can be solved.

The invention provides a communication method and device and a storage medium. The complexity of cell search can be reduced. In the method, a network device determines one or more access frequency points based on a current absolute time and a first mapping relationship; and sending a downlink synchronization signal at a first access frequency point in the determined one or more access frequency points. Correspondingly, the terminal equipment determines one or more access frequency points based on a first moment and a first mapping relation, and the first moment is the current time obtained by the terminal equipment; and detecting a downlink synchronization signal on the determined one or more access frequency points. Wherein the first mapping relationship indicates a corresponding relationship between the at least one access frequency point and the at least one time period, the current absolute time and the first moment are located in a first time period in the at least one time period, and the access frequency point is a frequency point which is provided by the network device for the terminal device and is used for access.

The invention provides a network selection method and device, electronic equipment and a chip system, and relates to the technical field of wireless communication, and the method comprises the steps: obtaining the cell information of a first cell, the first cell being a cell which is searched by a first communication entity in a network selection task and satisfies a first residence condition; the first communication entity is determined based on the entity identification information corresponding to the plurality of communication entities and the arbitration rule. And determining whether the first cell satisfies a second residence condition corresponding to the second communication entity based on the cell information and the target network identification information corresponding to the plurality of communication entities. And instructing the second communication entity to reside in the first cell under the condition that the first cell meets the second residence condition and the first communication entity and the second communication entity meet the switching condition. According to the method, the searched adaptive cell resources can be efficiently utilized, the overall network residing time of the multi-communication entity terminal is greatly shortened, and the network selection efficiency of the multi-communication entity is effectively improved.

The embodiment of the invention provides a cell selection method, a cell reselection method, a cell reselection measurement method, a communication method and related products. The method comprises the following steps: terminal equipment performs cell search on at least one candidate cell; and the terminal equipment selects a first cell in the at least one candidate cell based on the frequency point priority. Wherein the first cell satisfies a first condition, and the first condition comprises that a cell selection receiving level value of the first cell and a cell selection quality value of the first cell are both greater than 0. According to the example, the first cell is selected based on the priority, so that the UE has a larger probability to reside in the cell supporting the low power consumption characteristic as soon as possible, and the UE with energy-saving capacity or energy-saving demand is facilitated to realize energy saving.

Embodiments of the present application provide a cell selection method, a cell reselection method, a cell reselection measurement method, a communication method, and a related product. The cell selection method comprises: a terminal device performs cell search on at least one candidate cell; and then the terminal device selects a first cell from among the at least one candidate cell on the basis of frequency point priority. The first cell satisfies a first condition, and the first condition comprises: a cell selection receive level value of the first cell and a cell selection quality value of the first cell are both greater than 0. In this example, by selecting the first cell on the basis of priority, a UE has a higher probability of camping on a cell supporting low-power-consumption characteristics as soon as possible, which is beneficial for a UE having power-saving capability or power-saving requirements to achieve power saving.

A device and a method for reducing power consumption due to wireless communication in an electronic device are provided. The electronic device includes a sensor, a wireless communication circuit and a communication processor, wherein the communication processor can check a channel state while connected to a network through the wireless communication circuit, can check the movement state of a wearable device through the sensor if the channel state satisfies the specified condition related to network access restriction, can perform a cell search in a first period after a specified first time has elapsed if the wearable device is in a stationary state, and can perform a cell search in a second period that is relatively shorter than the first period if the wearable device is in a mobile state.

The invention relates to parallel maintenance of frequency layers during cell reselection. One UE (400) includes a processor (405) and a transceiver (425) that camps (610) a first frequency layer of a RAN (120) when in an RRC idle state, the first frequency layer (310) supporting a first set of network slices (311), where the first set of network slices (311) is prioritized for use with a first frequency. The processor (405) iteratively performs (615) a cell search on a second frequency layer (320) while the device camps on the first frequency layer, the second frequency layer (320) supporting a second set of network slices (321), where the second set of network slices (321) is prioritized for use with a second frequency. The processor (405) maintains (620) the second frequency layer (320) in parallel while in the RRC idle state.

This application discloses a communication method and apparatus, relating to the field of communication technology, for reducing access latency of RedCap terminals. The method includes: obtaining a first cell list; determining the cell order of the first cell list based on cell information; and performing cell search or cell reselection based on the cell order. The first cell list is either a cell search list or a cell reselection list, and the cell information includes at least one of energy, signal-to-noise ratio (SNR), RedCap capability, bandwidth, or cell type. Compared to simply sorting cells in the first cell list based on energy and SNR, this solution additionally considers RedCap capability, bandwidth, and cell type during the cell sorting process. The RedCap terminal can use RedCap capability, bandwidth, and cell type to prioritize cells in the first cell list that are eligible for access, thereby enabling it to use cells at the top of the first cell list to complete access during cell search or reselection, thus reducing cell access latency.

This invention discloses a spaceborne telemetry, tracking, and command (TT&C) method and related equipment based on a non-terrestrial network. The method is used in a spaceborne TT&C device, which is installed on a low-Earth orbit (LEO) satellite platform. The method includes: acquiring the real-time orbital parameters, GNSS positioning information, and a pre-stored table of high-Earth orbit (HEO) satellite coverage information for the assigned LEO satellite; calculating the spatiotemporal relationship between the assigned LEO satellite and the cell coverage area based on the current orbital parameters, GNSS positioning information, and the pre-stored or periodically updated HEO satellite coverage information table; and, based on the calculated spatiotemporal relationship, predicting and determining the cell coverage area of ​​the target HEO satellite, proactively waking up and initiating a cell search and on-demand access control process. This method can solve the problems of high construction costs, limited multiple access capabilities, and poor dynamic adaptability of existing spaceborne TT&C technologies.

Embodiments of the present disclosure are directed to systems and methods for delivering telecommunications coverage to airborne user equipment (UE). More particularly, in aspects set forth herein, systems and methods utilize an “airborne mode” that can be on the UE. The UE can automatically turn on the airborne mode when it detects that the UE is airborne. For example, the UE may detect a particular altitude, speed, or pressure that is associated with being airborne. The airborne mode could be used to modify the UE's default cell search and selection parameters to more quickly detect and connect to a particular air cell frequency.

The embodiment of the invention provides a cell switching method and device, relates to the technical field of communication, and is used for reducing the time consumed by cell switching when user equipment lacks necessary switching parameters, thereby reducing the service time delay and improving the user experience. The method comprises: receiving an RRC reconfiguration message, the RRC reconfiguration message being used for indicating cell handover, and the RRC reconfiguration message lacking target information of a target cell; in response to the RRC reconfiguration message, under the condition of skipping cell search, receiving a PBCH of the target cell to obtain first information in the target information; accessing the target cell according to the first information; and sending an RRC reconfiguration completion message, wherein the RRC reconfiguration completion message is used for responding to the RRC reconfiguration message.

The invention discloses a power equipment state simulation and real-time deduction reconstruction method and system, and belongs to the technical field of power equipment state monitoring and emulation.The method comprises the steps that firstly, internal physical field sample data of equipment under different working conditions are obtained through off-line numerical simulation; secondly, on the basis of the sample data, constructing a rapid deduction model of a function relationship between an input variable and a response value by utilizing a radial basis function neural network; then, acquiring real-time monitoring data of equipment operation and inputting the real-time monitoring data into the deduction model; then, physical field data values of all grid nodes in the equipment are calculated in real time through the model; and finally, through voxelization, adjacent unit search and trilinear interpolation, accurately mapping the physical field data to the three-dimensional model of the equipment, generating a visual cloud picture, and realizing real-time and visual reconstruction of the state of the equipment. The technical problems that traditional monitoring is incomplete and the simulation speed is low are solved.

A method for cell search is provided in the present disclosure. The method is performed by a terminal. The method includes: searching for first information at a predetermined frequency position(s), wherein the first information is used to indicate a search range of system information, wherein the system information is used for cell search.

A user equipment (UE) is configured to perform a cell search for an anchor cell of a fifth generation (5G) new radio (NR) network, acquire a first system information block (SIB) from the anchor cell comprising first configuration information for the anchor cell and acquire a second SIB from the anchor cell comprising second configuration information for one or more network energy saving (NES) cells, wherein the NES cells do not transmit SIBs.