Abstract: An information sending and receiving method and an apparatus are disclosed. In an embodiment an information sending apparatus includes a processor configured to determine, based on a physical broadcast channel (PBCH) period or a synchronization signal block burst set (SS block burst set) period, a period in which remaining minimum system information (RMSI) is to be sent and a sender configured to send the RMSI to a terminal device by using X as the period, wherein X is a multiple of the PBCH period, or X and the PBCH period are in a one-to-one correspondence or a one-to-many relationship, and wherein a network device is configured to send at least one piece of RMSI by using at least one beam or antenna port.

Abstract: This application discloses a super-cell handover method which is applied to an NCS and includes: receiving, by a first LE, measurement reports sent by a plurality of first TPs, where the measurement reports are determined by the plurality of first TPs based on a reference signal sent by target UE in a second super cell, the first LE is in a first super cell, the plurality of first TPs are in the first super cell, and the second super cell is adjacent to the first super cell; determining a first handover policy based on a preset condition and the measurement reports, where the first handover policy indicates whether the first LE allows to hand over the UE from the second super cell to the first super cell; and sending indication information of the first handover policy to a second LE, where the second LE is in the second super cell.

Abstract: A network out-of-synchronization state processing method and apparatus, and a network access method and apparatus are provided. The method includes: if a first network device does not receive, in a first time length after the first network device determines that a terminal is in a network out-of-synchronization state, a measurement message reported by a second network device in a signal coverage area of the first network device, instructing at least one second network device in the signal coverage area of the first network device to send paging signaling to the terminal; and setting a network status of the terminal to a detached state if the first network device determines that in a second time length, no second network device in the signal coverage area of the first network device receives a paging response sent by the terminal, and that the terminal is still in the network out-of-synchronization state.

Abstract: The present disclosure provides a signal processing method, including: performing discrete Fourier transform (DFT) on a data symbol block including M data symbols, where the M data symbols obtained after the DFT belong to K carriers, and at least two adjacent carriers in the K carriers are non-contiguous on a spectrum; or the M data symbols obtained after the DFT belong to K resource blocks of one carrier, and at least two adjacent resource blocks in the K resource blocks are non-contiguous on a spectrum; mapping the M symbols obtained after the DFT to M subcarriers corresponding to inverse fast Fourier transformation IFFT; and performing N-order IFFT on a plurality of mapped symbols.

Abstract: This application discloses a method and an apparatus for transmitting a signal in a wireless communications system. An example method includes: sending or receiving a signal of a first beam in a first beam set within a communication time of the first beam; and sending or receiving a signal of a third beam in a second beam set within a switching gap for switching from the first beam to a second beam in the first beam set. According to the method and the apparatus for transmitting a signal in a wireless communications system in embodiments of this application, overheads can be reduced.

Abstract: A method includes: broadcasting, by a network device, a minimum system information (MSI) message, where identification information of each SIB/system information block group in the MSI message includes an identifier of the SIB/system information block group and a type indication of the identifier, and the type indication of the identifier is used to indicate that a type of the identifier of the SIB/system information block group is an area specific system information identifier or a cell specific system information identifier. A corresponding terminal device and network device are also disclosed.

Abstract: This application provides a method and an apparatus for obtaining system information SI. The method includes: sending, by a terminal device, a first message to a network device, where the first message includes first request information used to request first system information SI; and detecting, by the terminal device, a second message and obtaining the first SI, where the second message includes information used to respond to the request of the first request information. The terminal device may send the first request information to the network device based on an actual requirement, and detect the second message on a preset time-frequency resource.

Abstract: This application discloses a paging indication transmission method, including: sending, by a network device, a first paging indication to a terminal device; and sending, by the network device, a second paging indication to the terminal device, where the first paging indication and the second paging indication form a complete paging indication of the terminal device. According to the foregoing paging indication transmission method and apparatus, the network device delivers the paging indication at two times, to reduce a payload for a single transmission of the paging indication.

Abstract: This application discloses a method and an apparatus for transmitting a signal in a wireless communications system. The method includes: sending or receiving a signal of a first beam in a first beam set within a communication time of the first beam; and sending or receiving a signal of a third beam in a second beam set within a switching gap for switching from the first beam to a second beam in the first beam set. According to the method and the apparatus for transmitting a signal in a wireless communications system in embodiments of this application, overheads can be reduced.

Abstract: Embodiments of the present invention provide a frame synchronization method and apparatus, which can reduce impact of a carrier frequency offset. In those embodiment, a solution is provided and the solution includes: obtaining a received signal of a receiving antenna; calculating an auto-correlation value of the received signal and determining a time corresponding to the auto-correlation value that is of the received signal and that meets a first preset condition, as an initial estimation time; obtaining a carrier frequency offset estimation value according to the initial estimation time, the received signal, and a frequency offset estimation algorithm, and performing frequency offset compensation on the received signal by using the carrier frequency offset estimation value; calculating a cross-correlation value and an auto-correlation value of the received signal on which the frequency offset compensation has been performed. The embodiments of the present invention are used for frame synchronization.

Abstract: Embodiments can provide a downlink-beam detection method and an apparatus. Under the method a terminal device can be notified by a network device of information about a broadcast beam. The network device can receive a detection result reported by the terminal device. The detection result may pertain to broadcast beam detection performed based on the information about the broadcast beam. the network device can then determine, based on the detection result, a downlink beam that needs to be swept during downlink-beam adjustment and that is used for data communication. This reduces signaling overheads.

Abstract: Embodiments of this application provide a grant-free resource allocation method, used by user equipment to perform grant-free communication based on a first UE ID corresponding to a first cell, without initiating a resource reconfiguration request to a second network device for resource reconfiguration. Therefore, signaling overheads and a communication latency are reduced. The method in the embodiments of this application includes: when user equipment moves from a first cell to a second cell, obtaining, by the user equipment, an ID that is of a second grant-free resource area to which the second cell belongs and is broadcast by a second network device; and if the ID of the second grant-free resource area is the same as a preobtained ID of a first grant-free resource area to which the first cell belongs, performing, by the user equipment, grant-free communication based on a first UE ID corresponding to the first cell.

Abstract: Embodiments of this application provide a paging method, including: sending, by a network device, paging-related information at a specified time, where the paging-related information is sent in a beam sweeping manner. A paging message is obtained based on the paging-related information.

Abstract: Embodiments of the present application relate to the field of communications technologies, and provide a wireless communication method, a device, and a system, so as to cancel or reduce inter-cell interference, to a terminal, between neighboring cells. The method includes: sending, by a terminal, uplink information to a first network side device in a first time period; and receiving, by the terminal in a second time period, downlink information sent by a second network side device, where the first time period and the second time period are a same time period. The embodiments of the present application are used for wireless communication.

Abstract: A communication method and a terminal device are provided. The method includes: generating one or more radio frames, where each radio frame includes at least one multiplexing block, each multiplexing block includes a synchronization signal and a PBCH field, and the PBCH field includes information for indicating a beam; and then sending the radio frames to a terminal device.

Abstract: Embodiments provide a method for transmitting a downlink control signal, and an apparatus. The method includes: sending, by a base station, one or more radio frames, where the one or more radio frames include a plurality of OFDM symbols that carry synchronization signals, each OFDM symbol that carries a synchronization signal is sent by using one or more downlink beams of the base station, and the OFDM symbol that carries the synchronization signal further carries a downlink control signal. The downlink control signal is placed in the OFDM symbol that carries the synchronization signal.

Abstract: A downlink transmission method and an apparatus, the including sending, by a network side device, a signaling indication to a terminal device (UE), wherein the signaling indication carries allocation information, and wherein the allocation information indicates a plurality of downlink transmission resources used to transmit data blocks.

Abstract: The present disclosure provides a signal processing method, including: performing discrete Fourier transform (DFT) on a data symbol block including M data symbols, where the M data symbols obtained after the DFT belong to K carriers, and at least two adjacent carriers in the K carriers are non-contiguous on a spectrum; or the M data symbols obtained after the DFT belong to K resource blocks of one carrier, and at least two adjacent resource blocks in the K resource blocks are non-contiguous on a spectrum; mapping the M symbols obtained after the DFT to M subcarriers corresponding to inverse fast Fourier transformation IFFT; and performing N-order IFFT on a plurality of mapped symbols.

Abstract: This application discloses a method and an apparatus for transmitting a signal in a wireless communications system. The method includes: sending or receiving a signal of a first beam in a first beam set within a communication time of the first beam; and sending or receiving a signal of a third beam in a second beam set within a switching gap for switching from the first beam to a second beam in the first beam set. According to the method and the apparatus for transmitting a signal in a wireless communications system in embodiments of this application, overheads can be reduced.

Abstract: This application discloses a super-cell handover method which is applied to an NCS and includes: receiving, by a first LE, measurement reports sent by a plurality of first TPs, where the measurement reports are determined by the plurality of first TPs based on a reference signal sent by target UE in a second super cell, the first LE is in a first super cell, the plurality of first TPs are in the first super cell, and the second super cell is adjacent to the first super cell; determining a first handover policy based on a preset condition and the measurement reports, where the first handover policy indicates whether the first LE allows to hand over the UE from the second super cell to the first super cell; and sending indication information of the first handover policy to a second LE, where the second LE is in the second super cell.