59 results about "Synchronization Channel" patented technology

The invention provides a VDSL ultra-low time delay communication method and system, and relates to the technical field of communication, and the method comprises the steps: encrypting a clock synchronization channel through a quantum key distribution protocol, dynamically dividing micro time slot resources in an orthogonal frequency division multiplexing symbol period, and generating a dynamically adjusted micro time slot resource distribution result; calculating an optimal phase offset matrix of the metasurface intelligent reflecting surface through a depth deterministic strategy gradient algorithm to obtain an optimized electromagnetic wave propagation path; generating a global optimization check matrix by aggregating the locally trained lightweight error correction model gradient of each node to obtain a compensated data stream; and constructing a causal graph model dynamic pruning high-entropy path to minimize causal entropy, through multi-agent reinforcement learning, taking time delay-energy efficiency as a game target to decide an optimal modulation order and a subcarrier switching strategy, and obtaining an optimized stable communication link. According to the invention, high-reliability and low-delay communication basic support is provided for high-precision intelligent manufacturing.

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.

Certain aspects of the present disclosure provide techniques for artificial intelligence-based synchronization signal scanning. A method of wireless communications by an apparatus includes monitoring at least a first frequency bandwidth across a set of time windows. The method further includes identifying at least one synchronization signal block (SSB) centered at a global synchronization channel number (GSCN) in the first frequency bandwidth using an artificial intelligence (AI) model comprising a kernel size tuned to an SSB aspect ratio. The method further includes communicating with a network entity based at least in part on the at least one SSB.

Systems, apparatus, processes, and computer-readable media for wireless communication are disclosed. For example, a network device may transmit periodic broadcasts on a synchronization channel to a plurality of wireless communication devices. The network device may receive one or more wireless communication device initiated messages from one or more of the plurality of wireless communication devices in one or more reserved response slots on the synchronization channel.

The invention discloses a 5G waveform-based synchronous channel design method. The method comprises the following steps of: dividing a system working bandwidth into a plurality of sub-bands; determining a candidate frequency domain position of a synchronization channel in each sub-band, wherein the synchronization channel is composed of a PSS and an SSS; and determining values of the PSS sequence and the SSS sequence according to the indexes corresponding to the PSS sequence and the SSS sequence, determining one or more frequency domain positions from the candidate frequency domain positions, and filling the selected frequency domain positions with the PSS sequence and the SSS sequence. In different interference and fading scenes, the time-frequency position of the synchronization channel can be adaptively selected according to interference and fading, so that the frequency domain position of interference and fading is avoided, and better performance is obtained.

Some embodiments relate to a communication network comprising at least one receiver system optically coupled to a plurality of transmitter systems for transmission of synchronization signals generated by the at least one receiver system to the plurality of transmitter systems over a unidirectional synchronization channel. The at least one receiver system configured to embed into the synchronization signals thereby generated additional data indicative of an internal time count thereof for synchronization of transmission of data / signals from each one of the plurality of transmitter systems to said at least one receiver system over a sparse data / signals unidirectional communication channel.

Disclosed in the present application are information processing methods and apparatuses. A method comprises: a terminal receiving first information sent by a network device, wherein the first information is used by the terminal to determine a frequency domain position where a low power synchronization signal (LP-SS) is located; and on the basis of the first information and a global synchronization channel number (GSCN), determining the frequency domain position where the LP-SS is located. Therefore, the terminal can search for the LP-SS in a relatively accurate frequency domain range, and the frequency domain position where the LP-SS is located can be determined more quickly, so that the system efficiency is effectively improved, and the energy consumption of the terminal is reduced.

Methods and systems for managing operation of a deployment of data processing systems are disclosed. The operation may be managed by determining a synchronicity classification of data that is to be transmitted between the data processing systems, and performing the transmission based on the synchronicity classification. The data may be classified as synchronous and / or asynchronous. If the data is classified as synchronous, then the data may be transmitted through a synchronous channel immediately and / or at a predetermined future time when the synchronous channel is operational. Otherwise, if the data classified as asynchronous, then the data may be appended to a queue of data to be transmitted at a future time.

Provided in the embodiments of the present application are a communication method and apparatus. The method comprises: a terminal device determining the current global synchronization channel number (GSCN) to be a first GSCN; then, the terminal device receiving first information from a network device, wherein the first information is used for indicating information associated with a second GSCN, and the second GSCN is a GSCN used by the network device to send an SSB; and on the basis of the first GSCN and the first information, the terminal device determining a third GSCN. In the method, a network device can provide a terminal device with information associated with a second GSCN on a network device side; in this way, the terminal device can combine the associated information with a first GSCN determined by the terminal device itself, so as to determine a third GSCN closer to the second GSCN; and subsequently, the terminal device performs downlink synchronization with the network device on the basis of the third GSCN, such that the accuracy of downlink synchronization can be effectively improved, thereby ensuring the subsequent communication performance.

The invention relates to the technical field of wireless communication, and discloses a public network downlink receiver clock frequency deviation estimation method based on linear fitting, which comprises the following steps of: monitoring a public network synchronization channel and capturing a frame header signal through a receiver; the frame header signal comprises a plurality of frame header signals, a data packet header, a synchronization frame of a broadcast signal and a key frame for frequency deviation estimation, and recording a timestamp received by a receiver when the frame header signal is captured each time; analyzing the timestamp of the frame header signal by using a linear fitting algorithm, and estimating the clock frequency deviation between the receiver and the base station through a minimum error function; a clock of the receiver is adjusted based on the estimated clock frequency offset. By introducing a frequency interpolation technology, a dynamic adjustment mechanism and multi-path effect compensation, the clock synchronization precision is remarkably improved, the receiver is ensured to stably operate in signal loss, interference and complex environments, and the robustness and reliability of the system are improved.

Certain aspects of this disclosure provide techniques for AI-based synchronization signal scanning. A method for wireless communication by a device includes monitoring at least a first frequency bandwidth across a set of time windows. The method also includes using an artificial intelligence (AI) model to identify at least one synchronization signal block (SSB) centered on a Global Synchronization Channel Number (GSCN) within the first frequency bandwidth, the AI ​​model including a kernel size tuned to the SSB aspect ratio. The method further includes communicating with network entities at least in part based on at least one SSB.

An apparatus comprising means for broadcasting across a limited portion of a duplex band, based on a reserved subset of global synchronization channel numbers, that have been reserved for cells supporting sub-band non-overlapping full duplex communication; and receiving, from a terminal apparatus, a random access message for the sub-band non-overlapping full duplex communication.

The invention provides a wireless communication method, terminal equipment and network equipment. The method comprises: a terminal device receiving first information, the first information being used for indicating a frequency domain position of a first channel; wherein the first channel is a synchronization channel or a discovery channel. In the embodiments of the present application, a terminal device can obtain information (i.e., first information) for indicating the frequency of a synchronization channel / discovery channel. Based on the first information, the terminal device can realize self frequency offset calibration, thereby facilitating improvement of communication quality.

The invention provides a direct link synchronization method, device and equipment. The method is applied to a first device, and comprises: sending a first synchronization channel to a second device, the first synchronization channel carrying first synchronization information; wherein the first synchronization channel comprises at least one of the following items: a first physical straight-through link control channel (PSCCH), a first physical straight-through link shared channel (PSSCH), a first straight-through link positioning reference signal (SL-PRS) and a first physical straight-through link feedback channel (PSFCH). According to the scheme of the invention, the second device can realize the synchronization process of the straight-through link without GNSS coverage.

The present disclosure provides a communication method of an electronic shelf label system, a system, a computer device and a storage medium. The method includes: configuring, by a server, an offset of each of base stations in a corresponding synchronization sub-network based on neighboring relationships between all the base stations in each of the synchronization sub-networks, so that each of the base stations calculates synchronization frame transmission time in a predetermined signal transmission cycle based on the offset; calculating, by each of the base stations, idle time in a synchronization channel based on the synchronization frame transmission time, so that each of the base stations receives a target synchronization frame sent by a superior base station in the idle time of the synchronization channel. According to the present disclosure, the synchronization frames sent by all the base stations has central and adjacent feature in time.

User equipment (UE) 110 performs a cell search 200 across a reserved subset of global synchronization channel numbers (GSCN), the reserved subset being reserved for cells supporting sub-band non-overlapping full duplex (SBFD) communication. Upon detecting a cell in the performed cell search, the UE performs a random-access procedure 210 with respect to the cell. In performing the cell search, the UE may attempt to receive a synchronisation signal block (SSB) 201 at the reserved subset of GSCNs. If a cell is not detected in the cell search across the reserved subset of GSCNs, the UE may perform a cell search across GSCNs other than the reserved subset of GSCNs. The random-access procedure with respect to the detected cell may only be performed after validating, on the basis of received system information, that the cell supports the SBFD communication.

The invention relates to an uplink signal transmission method, a management station, a terminal station and a system. The method is applied to a management station and comprises the following steps: sending uplink signal configuration information to a terminal station; wherein the uplink signal configuration information comprises signal indication information of a target uplink signal, the target uplink signal comprises an access uplink signal for access and / or a measurement uplink signal for measurement, and the signal indication information is used for indicating the terminal station to send the target uplink signal in an uplink synchronization channel. By adopting the method, the spectrum utilization rate can be improved, and uplink full-bandwidth channel measurement is realized.

The invention discloses a multicarrier distributed network synchronization method and system based on time-sharing sub-band multiplexing, and belongs to the field of wireless communication, the method comprises a self-organizing communication network, the self-organizing communication network comprises a logic center node and common nodes, and the logic center node is connected with the common nodes; based on the self-organizing network, a time-sharing sub-band multiplexing mode is adopted, a synchronous channel and a service channel are decoupled, a broadcast time slot deploys the synchronous channels of all nodes on fixed frequency domain sub-carrier resources, and only the service channel is transmitted in the service time slot without carrying the synchronous channel. According to the invention, the implementation overhead and the implementation complexity of the receiver are reduced, and the spectrum efficiency is improved.

Certain aspects of the present disclosure provide techniques for artificial intelligence-based synchronization signal scanning. A method of wireless communications by an apparatus includes monitoring at least a first frequency bandwidth across a set of time windows. The method further includes identifying at least one synchronization signal block (SSB) centered at a global synchronization channel number (GSCN) in the first frequency bandwidth using an artificial intelligence (AI) model comprising a kernel size tuned to an SSB aspect ratio. The method further includes communicating with a network entity based at least in part on the at least one SSB.

The invention discloses an information indication method and device, communication equipment and a storage medium, and belongs to the technical field of communication, and the information indication method comprises the steps that first equipment receives a first channel, and the first channel indicates target information of a second channel or a third channel, the first channel comprises at least one of a synchronization channel and a broadcast channel, and the target information comprises at least one of frequency domain information, time domain information and modulation information; and the first device receives the second channel based on the target information, and the second channel is used for carrying system information of Internet of Things communication.

The invention discloses a multi-antenna frequency domain enhanced wireless communication secure transmission system and method, and relates to the technical field of wireless communication, and the system comprises a security component, a transmitting end and a receiving end. The security component is used for generating keys K1 and K2. The transmitting end assembly comprises a baseband module used for scrambling, channel coding, constellation diagram scrambling based on K1 and serial-to-parallel conversion; the OFDM module is used for inserting a preamble training signal, constructing an OFDM matrix, inserting a pilot signal, performing inverse fast Fourier transform, adding a cyclic prefix and generating a time domain transmitting signal; and the space-frequency block coding module is used for coding between the OFDM matrix subcarrier and the antenna based on K2 activation. The receiving end assembly comprises a synchronization module used for realizing frame synchronization, channel estimation and equalization; and the receiving module is used for OFDM demodulation, space-frequency decoding, de-mapping and antenna matching. By applying the invention, the problems that the modulation mode is easy to crack, the antenna configuration is fixed, the channel characteristics are not fully utilized and the like in the existing secure transmission scheme can be solved.

The present application belongs to the technical field of communications. Disclosed are a signal receiving method and apparatus, and a device, a medium and a program product. The method is executed by means of a terminal device and comprises: receiving a synchronization signal, wherein the synchronization signal comprises one or more PSSs; and receiving a plurality of synchronization channels associated with the synchronization signal, wherein each of the plurality of synchronization channels comprises a PBCH, and the plurality of synchronization channels occupy the same time-domain resource and different frequency-domain resources. By means of the method, the number of time-domain resources occupied during SSB transmission is reduced, and the flexibility of resource scheduling is improved.

The application relates to the communication technical field, discloses a method for determining SSC number, a device and a storage medium, the method is as follows: adding data with the same time slot number in at least two received subframes to obtain multiple data results, performing correlation operation on each data result and a local secondary synchronization channel (SSC) sequence, determining the maximum value in the correlation operation result, obtaining a preset configuration table, the configuration table comprises multiple table entries, each table entry comprises an SSC number corresponding to a code group number under different time slot numbers, matching at least one determined maximum value and the corresponding time slot number with the SSC number and the time slot number in each table entry, determining a target subtable according to the matched table entry, determining a target code group number based on the determined maximum values in the target subtable, and outputting the SSC number corresponding to each target time slot number under the target code group number, so that the SSC number can be conveniently determined, and the operation amount is greatly reduced.

This application provides a communication method, device, and storage medium. The method includes: acquiring a frequency hopping pattern; the frequency hopping pattern includes the relationship between a system frame number and a frequency hopping frequency; the frequency hopping frequency corresponding to the system frame number is obtained based on the frequency corresponding to the Global Synchronization Channel Number (GSCN) and a target offset corresponding to the system frame number, the target offset being generated based on the system frame number and a key used to generate the frequency hopping frequency; and transmitting first information to a terminal using a broadcast channel according to the frequency hopping pattern. This method aims to enhance the anti-interference capability of the broadcast channel.

Discovery and synchronization channels are discussed for user-tracking zones in a cellular network. User-tracking zones reduce the mobility tracking burden on the UE and shift the tracking responsibility to the network. This shift allows for UE and network power savings from reduced searching at the UE as well as through efficient paging area tracking and less broadcast signaling. The various aspects provide channel design for initial synchronization and discovery of the user-tracking zones. A single frequency network (SFN) synchronization channel is provided with at least a reference signal for time synchronization and payload information that may include a zone identifier (ID), formatting for a system information transmission request, and resource allocation for the request. The zone ID may be included in the payload or embedded into the reference signal. Facility is also provided for handling zone nodes of different power classes that allows for maintaining the SFN operations.

An apparatus comprising means for performing a cell search across a reserved subset of global synchronization channel numbers, the reserved subset being reserved for cells supporting sub-band non- overlapping full duplex communication; and in dependence upon detecting a cell in the performed cell search, performing a random access procedure with respect to the cell.

The present invention discloses a method for generating synchronization sequences for low-orbit satellite broadband communications based on linear frequency modulation. The method comprises the following steps: generating up-and-down chirp frequency signals using a fractional slope coefficient of linear frequency modulation spread spectrum modulation; generating up-and-down chirp phase signals using a phase-frequency relationship; generating up-and-down chirp time domain signals using a phase signal index; generating a signaling signal using the slope coefficient and modulation symbol value of the linear frequency modulation spread spectrum; and generating a synchronization sequence frame structure using the generated up-and-down chirp and signaling signal. When applied to a low-orbit satellite broadband communication system, the present invention can achieve time-frequency synchronization in low signal-to-noise ratio and large-scale Doppler frequency shift environments. It can also flexibly adjust the sequence frequency domain position to avoid partial interference in the synchronization channel, thereby improving the anti-interference capability of the synchronization system.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Specifically, the present disclosure relates to a method performed by a base station (BS) in a wireless communication system, the method comprising: transmitting one or more synchronization signal (SS) / physical broadcast channel (PBCH) blocks of a predetermined format, wherein the SS comprises a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), and the PBCH further comprises a demodulation reference signal (DMRS), wherein the PSS specifies the predefined format of the one or more SS / PBCH blocks or the transmission periodicity of said one or more SS / PBCH blocks, and the physical cell identifier　is specified by the SSS or by the SSS in combination with the DMRS.

The present disclosure provides a system, method, and apparatus for synchronous channel access control of a wireless system. In some aspects, a device can communicate with a second device during one or more TWT service periods using a TWT session. Uplink and downlink communications may be coordinated to be both within the TWT service period to allow the device to enter a low power mode outside the TWT service period. A TWT session including a service period may be configured and managed by the device or the second device to ensure that communications associated with an XR experience between the devices (such as pause or tracking frames provided as uplink data or video data frames provided as downlink data) meet latency or other requirements for the XR experience. The use of a TWT service period allows other devices to use the wireless medium outside the TWT service period.

The embodiment of the invention provides a communication method and device. The method comprises the following steps: terminal equipment determines that a current global synchronization channel number (GSCN) is a first GSCN; the terminal device receives first information from the network device, the first information being used for indicating information associated with a second GSCN, and the second GSCN being a GSCN for the network device to send the SSB; and the terminal device determines a third GSCN according to the first GSCN and the first information. In the method, a network device can provide information associated with a second GSCN at a network device side for a terminal device, so that the terminal device can determine a third GSCN closer to the second GSCN in combination with the associated information and a first GSCN determined by the terminal device, and the subsequent terminal device performs downlink synchronization with the network device based on the third GSCN. The accuracy of downlink synchronization can be effectively improved, so that the subsequent communication performance can be ensured.