Abstract: A beacon frame transmission control method and a related apparatus are provided that improve the transmission robustness of the beacon frame. The method includes: generating, by a master access point AP, indication information used to indicate a transmission time period of a beacon frame of at least one secondary AP; and sending, by the master AP, the indication information to the at least one secondary AP, where the master AP and the at least one secondary AP belong to a same AP collaboration group, and transmission time periods of beacon frames of APs in the AP collaboration group are different.

Abstract: This application relates to the field of communications technologies. A method includes: A first device receives first configuration information sent by a second device. The first configuration information includes at least one of information about a reference signal, frequency range information of a radio frequency signal, or bandwidth range information. The first device measures a first reference signal set, to obtain a first measured value. The first reference signal set includes at least two reference signals. The first device determines an expansion factor ? based on the first configuration information. The first device determines a second measured value based on the first measured value and the expansion factor ?.

Abstract: A method includes generating a data signal based on data, scrambling the data signal with a pseudo-random signal thereby generating a scrambled data signal, generating an amplitude shift keying (ASK) signal based on the scrambled data signal, and transmitting, by a transceiver, the ASK signal.

Abstract: A signal generation method is disclosed, to enhance an anti-interference capability and a coverage area of a signal. The method includes: A first device obtains a first signal based on transmission information through channel encoding, where the transmission information includes information that the first device needs to send to a second device; the first device generates a second signal based on the first signal through repetition or frequency spread transformation; the first device generates a third signal based on the second signal through linear encoding; and the first device generates a target signal based on the third signal through signal modulation, where the target signal is sent to the second device. Associated devices are also described.

Abstract: Embodiments of this application provide a synchronization signal transmission method, a network device, and a terminal device. The method includes: determining, by a network device, time domain positions for sending m synchronization signal blocks, where the time domain positions are {s1, s2, . . . , sm}+n×T, s1 represents a start symbol index of the first synchronization signal block in a time unit, s2 represents a start symbol index of the second synchronization signal block in the time unit, sm represents a start symbol index of an mth synchronization signal block in the time unit, the time unit includes T symbols; and sending, by the network device, the synchronization signal blocks to a terminal device in the time domain positions of the synchronization signal blocks. The technical solutions provided in this application have relatively high flexibility, and can meet, to some extent, a synchronization signal block sending requirement for a high-frequency technology.

Abstract: This application provides a data transmission method and apparatus, to increase a coding gain. The method includes: determining a transport block size, where the transport block size is related to a first parameter including at least one of the following: a modulation and coding scheme, configuration information of a transmission resource, a quantity NRE of resources to which a transport block is mapped, or a quantized intermediate value N?info, the first parameter is related to a second parameter including at least one of the following: an upper limit value (1) of the quantity of resources to which the transport block is mapped, an upper limit value (2) of the transport block size, or an upper limit value (3) of the quantized intermediate value; and sending or receiving data on the transmission resource based on the transport block size.

Abstract: This application relates to the field of communications technologies. A method includes: A first device receives first configuration information sent by a second device. The first configuration information includes at least one of information about a reference signal, frequency range information of a radio frequency signal, or bandwidth range information. The first device measures a first reference signal set, to obtain a first measured value. The first reference signal set includes at least two reference signals. The first device determines an expansion factor ? based on the first configuration information. The first device determines a second measured value based on the first measured value and the expansion factor ?.

Abstract: Embodiments of this application provide a power determining method, an apparatus, and a system, to resolve a problem of how to determine transmit power of sending a plurality of random access preambles. The method includes: determining first transmit power of N random access preambles to be sent to a network device, where the first transmit power is related to a quantity N of the random access preambles, and N is an integer greater than 1; and sending the N random access preambles to the network device at the first transmit power. This application is applicable to the field of communication technologies.

Abstract: This application discloses a random access method and a corresponding apparatus. The method includes: A terminal device determines, based on a measurement result of a SS/PBCH block, a random access opportunity and a random access preamble that are associated with the synchronization signal/physical broadcast channel block. The terminal device sends a random access signal based on the random access opportunity and the random access preamble. There is a correspondence between the random access opportunity and/or the random access preamble and at least one of the following: a data subcarrier spacing ?fData, or a ratio ?fData/?fRA of a random access subcarrier spacing ?fRA to the data subcarrier spacing ?fData. At least one of the random access subcarrier spacing ?fRA and the data subcarrier spacing ?fData is greater than 120 kHz. This application provides a design of a random access signal based on a large subcarrier spacing, to improve communication performance.

Abstract: Example transmit power determining methods and apparatus are described. One example method includes determining a first transmit power based on N time domain resources corresponding to a first transport block. The first transport block is sent on the N time domain resources at the first transmit power. The first transmit power is a transmit power of the first transport block on each of the N time domain resources, a size of the N time domain resources is greater than one slot, and N is a positive integer.

Abstract: This application provides a system information redundancy version determining method and apparatus. A communications device determines at least one time-domain resource unit Ux, and determines a redundancy version RVx for system information on the time-domain resource unit Ux according to the time-domain resource unit Ux, where x is an identifier of the time-domain resource unit, the redundancy version RVx satisfies RVx=(Int1(X1/X2*(Int2(x/M) mod K))) mod L, x is a non-negative integer, X1 and X2 are non-zero real numbers, M is a positive real number, K and L are positive integers, mod indicates a modulo operation, Int1 indicates rounding up or rounding down, and Int2 indicates rounding up or rounding down.

Abstract: A signal transmission method and an apparatus are provided, to resolve a problem, in a conventional technology, that transmission performance is poor when a signal is transmitted in a DFT-s-OFDM waveform. A transmitting end maps a plurality of modulation symbols to a plurality of layers, performs discrete Fourier transform (DFT) on a modulation symbol at a part of the layers to obtain a first symbol, and performs discrete Fourier transform DFT and phase offset on a modulation symbol at a remaining part of the layers to obtain a second symbol. Phase offset is performed on a symbol at a part of layers, so that a PAPR can be reduced.

Abstract: In a random access method, random access preambles are grouped, and an electronic device selects a random access preamble from the grouped random access preambles, and receives an indication of a base station for the electronic device to send a message 3 repeatedly or in a diversity mode, so that the electronic device sends the message 3 repeatedly or in a diversity mode in a random access process. Accordingly, a probability of detecting the message 3 by the base station can be effectively improved, coverage performance of an uplink signal is improved, and/or resources of the base station are less wasted.

Abstract: This disclosure discloses a communication method and apparatus. In the method, a reflector is used to assist in communication between a terminal and an access network device, and in a reflector-assisted communication process, the reflector is indicated to be in a working mode when being required by the terminal or the access network device, to assist in communication, and the reflector is indicated to be in a sleep mode when being required by the terminal or the access network device, to reduce power consumption.

Abstract: A communication method and a related apparatus. The communication method includes determining, based on a starting location of a first remaining minimum system information RMSI detection window and a time index of a synchronization signal (SS)/physical broadcast channel (PBCH) block, a starting location of an RMSI detection window corresponding to a terminal device, where a value of the starting location of the RMSI detection window is one of four possible values of the starting location of the RMSI detection window, and receiving the RMSI based on the starting location of the RMSI detection window.

Abstract: This application provides a communication method and a communications apparatus. The method includes: determining a system frame number of a radio system frame in which a to-be-sent first broadcast channel PBCH is located, to obtain a first transport block, where the first processing manner is used to indicate some bits of the system frame number of the radio system frame in which the first PBCH is located, and the first MIB includes remaining bits, other than the some bits, of the system frame number of the radio system frame in which the first PBCH is located; and sending, by using the first PBCH, the first transport block in the radio system frame.

Abstract: A random access method includes determining, by a network device, configuration information and sending the configuration information to a terminal. The configuration information indicates at least a quantity of random access preambles transmitted on one random access resource, a quantity of contention-based random access preambles transmitted on the one random access resource, a quantity of contention-free random access preambles transmitted on the one random access resource, the quantity of random access preambles associated with one downlink signal, the quantity of contention-free random access preambles associated with the one downlink signal, the quantity of contention-based random access preambles associated with the one downlink signal, or a quantity of transmitted downlink signals associated with the one random access resource.

Abstract: A communication method and a related apparatus. The communication method includes determining, based on a starting location of a first remaining minimum system information RMSI detection window and a time index of a synchronization signal (SS)/physical broadcast channel (PBCH) block, a starting location of an RMSI detection window corresponding to a terminal device, where a value of the starting location of the RMSI detection window is one of four possible values of the starting location of the RMSI detection window, and receiving the RMSI based on the starting location of the RMSI detection window.

Abstract: This application discloses a communication method and apparatus. A terminal device determines a frequency position of a random access resource based on at least one of an initial frequency offset, a random access resource configuration period, an uplink channel bandwidth, a bandwidth of the random access resource, a time period of a random access resource, a time period of the random access resource, and a frequency index of the random access resource that are configured by a network device, and the terminal device sends a random access signal to the network device at the determined frequency position.

Abstract: Embodiments of this application provide a communication method and a communication apparatus. According to the method, a terminal device receives configuration information from a network device. The terminal device determines, in a first parameter set based on the configuration information, a parameter corresponding to a random access preamble. The terminal sends the random access preamble to the network device based on the parameter corresponding to the random access preamble and the configuration information.