Abstract: A communication method includes: sending a first sensing signal and a first communication signal in a first frequency band; sending a second sensing signal in a second frequency band; and sending a third communication signal in a third frequency band, wherein the first frequency band comprises only a downlink resource, the second frequency band comprises only a downlink resource, and the third frequency band comprises an uplink resource and a downlink resource.

Abstract: This application provides a timing method and apparatus. The method includes: A first device calculates a propagation delay between the first device and a second device based on a first moment, a third moment, and a first duration, where a moment at which a baseband of the first device sends a first reference signal is a first moment, and a moment at which a baseband of the second device receives the first reference signal is a second moment, and a moment at which the baseband of the first device receives a second reference signal is a third moment, and a moment at which the baseband of the second device sends the second reference signal is a fourth moment, and the first duration is related to the second moment and the fourth moment.

Abstract: A method includes: determining a first time domain resource, where the first time domain resource includes M time domain symbols, M is an integer greater than 1, and an interval between any two of the M time domain symbols is greater than or equal to one time domain symbol and sending a first signal on the M time domain symbols, where a signal that is in the first signal and located on a time domain symbol a is a product of a second signal and an element a in a mask sequence, a length of the mask sequence is M, the time domain symbol a is a symbol whose sequence number is a in the M time domain symbols, the element a is an element whose sequence number is a in the mask sequence, and a is an integer greater than or equal to 0 and less than M.

Abstract: A communication method includes: receiving the first information, where the first information indicates a modulation and coding scheme MCS of a first signal, the MCS of the first signal belongs to a first MCS set, and amplitude of a modulation symbol corresponding to an MCS in the first MCS set is constant; and receiving or sending the first signal according to the MCS of the first signal.

Abstract: This application provides methods and apparatuses, and relates to the field of communication technologies, A method includes a first network element receives a first message from an access network device, where the first message includes identification information of a terminal, identifies a terminal type, and if the terminal type is a first terminal type, sends the identification information of the terminal to an application server, or if the terminal type is a second terminal type, triggers an authentication procedure of the terminal.

Abstract: This application provides a communication method and a communication apparatus. The method includes: A sensing device may send a sensing signal in a second time period in a first time period, but does not send a sensing signal in a time period other than the second time period in the first time period. In other words, there is a limitation that a network device sends a signal in a part of a time domain length, so that sending the sensing signal and receiving the sensing signal are separately performed. Therefore, when antenna isolation is limited, the network device can avoid receive and transmit coupling interference caused by simultaneous receiving and sending.

Abstract: A communication method and apparatus are provided. The method includes: A first communication apparatus receives a first request, where the first request indicates the first communication apparatus to obtain information about a first tag. The first communication apparatus obtains the information about the first tag based on the first request, where the information about the first tag includes an identifier of the first tag. According to the method, after obtaining the information about the first tag, the first communication apparatus determines the corresponding first communication session for the information about the first tag, so that it can be ensured that the first communication apparatus can effectively and accurately transmit the information about the first tag by using the first communication session.

Abstract: A communication method and apparatus are provided. The method includes: A first network device determines a first time domain resource, and sends a first signal on the first time domain resource. The first time domain resource includes N1 first time domain symbols and N2 second time domain symbols. A difference between any two adjacent first time domain symbols in the N, first time domain symbols is T1 time domain symbols. A difference between any two adjacent second time domain symbols in the N2 second time domain symbols is T2 time domain symbols. T2>T1, and N1 and N2 are positive integers. According to the solutions, the first network device sends the first signal on the N1 first time domain symbols with a periodicity of T1 and the N2 second time domain symbols with a periodicity of T2.

Abstract: A communication method and apparatus are provided. The method includes: A network device sends first signaling, indicating a terminal device to initiate random access on a first random access occasion; after receiving the first signaling, if the terminal device cannot complete the random access or data transmission after the random access, for example, stored energy of the terminal device is insufficient, the terminal device may send first indication information to the network device, indicating that a first terminal device cannot complete the random access or data transmission after the random access; and after receiving the first indication information, the network device may send second signaling, indicating the terminal device to initiate random access on a next random access occasion (namely, a second random access occasion) after the first random access occasion.

Abstract: A full-duplex communication apparatus and method are provided, and relate to the field of communication technologies, to improve a self-interference cancellation capability of the full-duplex communication apparatus. The full-duplex communication apparatus includes a first antenna, a second antenna, and a gating apparatus. The full-duplex communication apparatus may receive a first signal from the first antenna through the gating apparatus, and perform interference suppression or cancellation on the first signal; and may further transmit a signal through the second antenna.

Abstract: A data transmission method and apparatus using a clear channel assessment (CCA) detection threshold are disclosed. The method includes: obtaining, by a base station, at least one CCA detection threshold; determining a current CCA detection threshold from the at least one CCA detection threshold; determining transmit power of to-be-sent data based on the current CCA detection threshold; and sending the to-be-sent data to a target terminal based on the transmit power.

Abstract: This application provides a downlink control information (DCI) obtaining method and apparatus. The method includes: determining, by a terminal, predefined search space based on aggregation levels supported by the terminal, where the predefined search space includes search space corresponding to at least one of an aggregation level 16 and an aggregation level 24; and performing, blind detection to obtain the DCI. Alternatively, the method includes: determining, by a terminal, blind detection search space of the terminal from predefined search space based on a quantity of resource blocks (RBs) occupied by an enhanced physical downlink control channel (EPDCCH) and aggregation levels supported by the terminal, where the predefined search space includes corresponding search space obtained when the RB quantity is 16; and performing, blind detection to obtain the DCI.

Abstract: An access method and system, a user equipment, and a network side device are provided. The method includes: receiving, by a user equipment, a first message that carries an identifier of a second network access point, where the second network access point can perform air interface offloading on a first network in which a user equipment is currently located; and when the first message carries identifiers of a plurality of second network access points, selecting, by the user equipment, one second network access point from the plurality of second network access points according to first auxiliary information, and accessing the selected second network access point. By adopting the technical solutions in the embodiments of the present invention, an access delay can be effectively shortened, and access efficiency can improved, thereby effectively implementing offloading.

Abstract: The present disclosure describes a video data processing method and a device. An example method includes: determining, by a network device, a video bitrate, a volume of scheduled video data, and video-played duration of a video service of a terminal; determining, by the network device, a buffer time of the video service of the terminal based on the video bitrate, the volume of scheduled video data, and the video-played duration; and performing, by the network device, video data scheduling on the terminal based on the buffer time.

Abstract: A method for sending a channel reservation signal and a base station, related to the field of communications technologies, includes: detecting, by a base station, whether a system signal is received on an unlicensed channel; and sending, by the base station, a channel reservation signal on the unlicensed channel to reserve the unlicensed channel based on the base station detecting that the system signal is received on the unlicensed channel.

Abstract: Embodiments of the present disclosure provide a method that includes receiving, by supporting user equipment UE, a pairing request message sent by a network side; and acquiring, by the supporting UE, a friend UE short-distance identifier list when self supporting capability information of the supporting UE indicates that the supporting UE supports a friend UE. The method also includes performing, by the supporting UE, identity authentication on the benefitted UE according to the friend UE short-distance identifier list and a short-distance identifier of a benefitted UE that is carried in the pairing request message. The method also includes performing, by the supporting UE, pairing processing with the benefitted UE, and sending a pairing response message to the network side, if the benefitted UE has been authenticated.

Abstract: This application provides a signal transmission method, apparatus, and system, and a device. The method may include determining, by a second access network device, that a first channel is idle. The method may also include sending, by the second access network device, first information that indicates occupancy of the first channel, where the first information includes a first power value and first duration, and the first power value is power used by the second access network device to send a signal through the first channel in the first duration. Therefore, spectrum efficiency of an unlicensed spectrum is improved.

Abstract: This application provides a downlink control information (DCI) obtaining method and apparatus. The method includes: determining, by a terminal, predefined search space based on aggregation levels supported by the terminal, where the predefined search space includes search space corresponding to at least one of an aggregation level 16 and an aggregation level 24; and performing, blind detection to obtain the DCI. Alternatively, the method includes: determining, by a terminal, blind detection search space of the terminal from predefined search space based on a quantity of resource blocks (RBs) occupied by an enhanced physical downlink control channel (EPDCCH) and aggregation levels supported by the terminal, where the predefined search space includes corresponding search space obtained when the RB quantity is 16; and performing, blind detection to obtain the DCI.

Abstract: This application discloses a resource configuration method and an apparatus to support a code rate lower than MCS 0. First indication information is sent by a base station to a terminal device. The first indication information includes a first quantity of physical resource blocks. The physical resource block is used to carry data transmitted between the base station and the terminal device. Second indication information is sent by the base station to the terminal device. The second indication information carries a first parameter. The first parameter is used by the terminal device to determine a second quantity of physical resource blocks and the first quantity of physical resource blocks. The second quantity of physical resource blocks is used to determine a transport block size TBS.

Abstract: The present disclosure describes a video data processing method and a device. An example method includes: determining, by a network device, a video bitrate, a volume of scheduled video data, and video-played duration of a video service of a terminal; determining, by the network device, a buffer time of the video service of the terminal based on the video bitrate, the volume of scheduled video data, and the video-played duration; and performing, by the network device, video data scheduling on the terminal based on the buffer time.