Abstract: A method includes: a terminal obtains first signaling including a transmit power of a first time-frequency resource and a first frequency domain parameter of the first time-frequency resource. The terminal obtains downlink control information, where the downlink control information includes a second frequency domain parameter of the first time-frequency resource and a third frequency domain parameter and a modulation and coding scheme of a second time-frequency resource, the second frequency domain parameter is for frequency domain resource allocation of the first time-frequency resource, and the third frequency domain parameter is for frequency domain resource allocation of the second time-frequency resource.

Abstract: A method includes: a terminal obtains first signaling including a first frequency-domain parameter of a first time-frequency resource (RO1), the first frequency-domain parameter includes an available frequency-domain resource of the RO1, and the available frequency-domain resource includes one or more consecutive frequency-domain resource blocks; obtains DCI including a second frequency-domain parameter of the RO1 and a third frequency-domain parameter and a MCS of a RO2, the second frequency-domain parameter is for determining, from the available frequency-domain resource of the RO1, an actual frequency-domain resource of the RO1 or that no available frequency-domain resource exists, and the third frequency-domain parameter is for frequency-domain resource allocation of the RO2. When the RO1 exists, a time-domain position of the RO1 is the same as a time-domain position of the RO2, and the RO1 has a frequency-domain position different from that of the RO2.

Abstract: Embodiments of this application disclose a communication method and a device. The method includes: determining a first signal, where the first signal includes Q reference signals, every K reference signals in the Q reference signals form one group, a value of a first reference signal in the group is related to a value of a second reference signal, the second reference signal is a reference signal other than the first reference signal in the group, power of each group of reference signals at a start location of the first signal that has undergone DFT processing is 0, and both K and Q are even numbers greater than 1; and sending the first signal. Based on the method described in this application, in-band interference of a signal is reduced.

Abstract: The present disclosure relates to communication methods. One example method includes within a first discontinuous reception (DRX) cycle, starting, by a terminal device, a first timer (for example, a DRX inactivity timer (drx-InactivityTimer)) when a physical downlink control channel (PDCCH) indicates a new transmission. When the first timer expires at or after a time position for sending an indication signal, the terminal device does not receive the indication signal, where the time position is configured by a network device for the terminal device, and the indication signal is used to indicate the terminal device to sleep.

Abstract: This application provides an example paging indication information transmission method and an example communications apparatus. The method includes the terminal device receiving paging indication information, where the paging indication information includes at least one of the following bits: all or some bits of valid bits of a short message field in downlink control information (DCI), all or some bits of remaining bits of the short message field in the DCI, and all or some bits of a reserved field in the DCI. The method also includes the terminal device determining, based on the paging indication information, whether to detect a physical downlink shared channel (PDSCH).

Abstract: A signal transmission method and an apparatus are provided. In the method, a transmit end determines a plurality of reference signals based on a combined reference signal, a combination manner, and an interference coefficient between different reference signals. The combined reference signal is obtained by combining the plurality of reference signals. The combination manner includes at least one processing manner of performing summation or difference calculation on the plurality of reference signals. The transmit end sends the plurality of reference signals. The plurality of reference signals includes a reference signal at a real signal position and a reference signal at an imaginary signal position. It can be learned that, when determining the plurality of reference signals, the transmit end considers at least one processing process of performing summation or difference calculation on the plurality of reference signals.

Abstract: This application provides an example paging indication information transmission method and an example communications apparatus. The method includes the terminal device receiving paging indication information, where the paging indication information includes at least one of the following bits: all or some bits of valid bits of a short message field in downlink control information (DCI), all or some bits of remaining bits of the short message field in the DCI, and all or some bits of a reserved field in the DCI. The method also includes the terminal device determining, based on the paging indication information, whether to detect a physical downlink shared channel (PDSCH).

Abstract: A signal transmission method and an apparatus. A terminal obtains first information, and sends a signal corresponding to a first pilot pattern or a second pilot pattern. The first information is usable to indicate the terminal to use the first pilot pattern or the second pilot pattern. The first pilot pattern is usable to that a first reference signal is located at a first time domain position, and a second reference signal is located at a second time domain position. The second pilot pattern is usable to indicate that a third reference signal is located at the first time domain position, and a fourth reference signal is located at a third time domain position.

Abstract: This application provides a method and an apparatus for sending feedback information and a method and an apparatus for receiving feedback information, to reduce resource waste in a data retransmission process.

Abstract: A method includes a transmitting end sending a first signal that includes a data signal and a reference signal. A first imaginary reference signal in the reference signal is located at a real signal location of the first signal, and/or a first real reference signal in the reference signal is located at an imaginary signal location of the first signal; and the reference signal is used for phase noise estimation.

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: Embodiments of this application provide a communication method and apparatus. In the method, the first communication apparatus may receive a first message, where the first message includes information about an expansion factor. The first communication apparatus determines a quantity of information bits based on the expansion factor, generates a to-be-sent signal based on the quantity of information bits; and transmits the to-be-sent signal. During communication, the communication apparatus uses the expansion factor in transmission, so that the quantity of information bits transmitted in a filter can be increased, to ensure high spectrum utilization and high data transmission efficiency.

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: The present disclosure relates to a phase noise suppression method. In an example method, a first device generates a first signal and sends the first signal to a second device. The first signal includes one or more discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-s-OFDM) signals. Each of the one or more DFT-s-OFDM signals includes P block-phase noise tracking pilot signal (Block-PTRS) patterns. Each of the P Block-PTRS patterns includes Q phase noise tracking pilot signals (PTRSs). The Q PTRSs include Q(1) real part PTRSs and Q(2) imaginary part PTRSs.

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: 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.