7 results about "Broadcast control channel" patented technology

The invention relates to the technical field of satellite communication, in particular to a satellite communication frequency offset estimation and synchronization method, a storage medium and a satellite communication terminal.The satellite communication frequency offset estimation and synchronization method comprises the steps that a satellite wireless signal containing a frequency correction channel burst and a broadcast control channel burst is received; detecting frequency correction channel burst to obtain coarse carrier frequency offset; positioning baseband data corresponding to a broadcast control channel burst in the satellite wireless signal; pre-compensating baseband data corresponding to the broadcast control channel burst by using coarse carrier frequency offset, and calculating residual frequency offset of a residual frequency offset signal; obtaining a total carrier frequency offset according to the coarse carrier frequency offset and the residual frequency offset; and performing complete compensation, demodulation and channel decoding on the baseband data corresponding to the broadcast control channel burst by using the total carrier frequency offset to obtain decoded data. According to the method, the coarse estimation of the FCCH and the fine estimation and verification mechanism of the BCCH are combined, and the synchronization reliability can still be ensured under the complex channel condition.

Provided are a method for a terminal for requesting a system information block (SIB), and an apparatus for supporting the method in a wireless communication system. The method may comprise the steps of: receiving, from a radio access network (RAN), an SIB list comprising one or more SIBs supported by a cell; receiving, from the RAN, SIB broadcast information indicating whether the SIB supported by the cell is broadcast in a broadcast control channel (BCCH) section; detecting an omitted SIB on the basis of the SIB list and SIB broadcast information; and requesting the omitted SIB from the RAN.

This disclosure describes systems, methods, and devices related to optimized latency control. A device may advertise target wake time (TWT) service periods (SPs) for a control channel on a main channel. The device may identify station device (STA) states during and outside TWT SPs, enabling doze outside and awake during TWT SPs. The device may identify STA feedback at defined intervals, with feedback including buffer status or low latency indication. The device may transmit trigger resource unit allocation, transmission parameters, and feedback format, scheduling.

The application provides a method for cell switching or reselection selection in an MBS service, the method for cell switching or reselection is executed at a user equipment side, and the method comprises the following steps: obtaining a user service description, wherein the user service description comprises a temporary mobile group identifier, an MBS session service, and a first service area identifier of a current cell, the first service area identifier corresponds to the temporary mobile group identifier and the session service; receiving a system information block of a broadcast control channel, wherein the system information block comprises second service area identifiers of a plurality of neighboring cells; and selecting a corresponding neighboring cell containing the first service area identifier for cell switching or reselection in the second service area identifiers. Through the method for cell switching or reselection selection based on cell priority, the UE can continuously receive the MBS service.

Disclosed are a broadcast data transmission method and apparatus, and a device. The method includes determining first configuration information of a beam switching position, or, using second configuration information of a second cyclic prefix (CP), and the first configuration information / the second configuration information includes a configured synchronization signal block (SSB) candidate position, a broadcast control channel detection occasion, and a time-domain scheduling parameter of a data channel for receiving broadcast data; and according to the first configuration information / the second configuration information, transmitting an SSB and a broadcast control channel in a beam behind the beam switching position or the CP. By using the method provided in the present disclosure, the problem of efficient reception of broadcast data under beam switching during higher SCS can be solved.

This application relates to the field of satellite communication technology, specifically to a satellite communication frequency offset estimation and synchronization method, a storage medium, and a satellite communication terminal. The satellite communication frequency offset estimation and synchronization method includes: receiving a satellite radio signal containing a frequency correction channel burst and a broadcast control channel burst; detecting the frequency correction channel burst to obtain a coarse carrier frequency offset; locating the baseband data corresponding to the broadcast control channel burst in the satellite radio signal; pre-compensating the baseband data corresponding to the broadcast control channel burst using the coarse carrier frequency offset, and calculating the residual frequency offset for the residual frequency offset signal; obtaining the total carrier frequency offset based on the coarse carrier frequency offset and the residual frequency offset; and performing full compensation, demodulation, and channel decoding on the baseband data corresponding to the broadcast control channel burst using the total carrier frequency offset to obtain decoded data. This invention combines coarse estimation of the FCCH with fine estimation and verification mechanisms of the BCCH, ensuring the reliability of synchronization even under complex channel conditions.

The present disclosure relates to methods and apparatus for downlink control physical structure. A method and apparatus for signaling of higher layer messages can be provided. A higher layer message can be received by a device from a base station, the higher layer message for monitoring a control channel candidate in at least one shortened transmission time interval in a subframe and monitoring a set of resource blocks corresponding to the control channel candidate in the at least one shortened transmission time interval; it can be determined whether at least one resource block in the set of resource blocks at least partially overlaps with a broadcast control channel or signal; based on the determination of whether at least one resource block in the set of resource blocks at least partially overlaps with a broadcast control channel or signal, a control resource element for transmission of the control channel candidate can be determined; and the control channel candidate can be attempted to be decoded in the at least one shortened transmission time interval according to the determined control resource element.