Abstract: A communication method applied to a first node includes receiving first indication information and second indication information from a second node, wherein the first indication information indicates resource availability of a first slot in a first set, the first set comprises at least one slot, the first slot is a slot in which a first resource is configured, the second indication information indicates resource availability of a first frequency domain resource group. A second resource is determined based on at least one of the first indication information or the second indication information. a third node is communicated with over the first resource, wherein the second node is an upper-level integrated access and backhaul (IAB) node of the first node, the third node is a lower-level IAB node of the first node.

Abstract: Embodiments of this application provide a communication method and a related apparatus, so that a first communication apparatus reports first performance indicator information to a second communication apparatus, thereby helping the second communication apparatus determine a nonlinear compensation status of first coefficient information for a power amplifier. This helps the second communication apparatus determine appropriate transmit power for the power amplifier, and improves linearity of a signal output by the second communication apparatus, thereby improving performance of the second communication apparatus. The method in embodiments of this application includes: A first communication apparatus receives a first signal from a second communication apparatus, where the first signal is a signal obtained by performing nonlinear compensation based on first coefficient information.

Abstract: In one example method, a first device obtains configuration information of a reference signal, an interval range of each of a plurality of intervals, and a predistortion model parameter of each of the intervals, where the plurality of intervals are power intervals of the reference signal. The first device obtains a first reference signal based on the configuration information. The first device receives a reference signal from a second device to obtain a second reference signal. The first device determines, based on a predistortion model parameter of a first interval in the plurality of intervals, the first reference signal, and the second reference signal, a predistortion coefficient of the first interval.

Abstract: In one example method, a network device sends first configuration information and second configuration information to a terminal device, where the first configuration information indicates configuration information of Q reference signals, and the second configuration information indicates model parameters of equivalent power amplifiers connected to Q digital channels of the network device. The terminal device receives the Q reference signals sent by the network device to obtain a receiving signal. The terminal device determines a model coefficient of an equivalent power amplifier based on the receiving signal, the configuration information of the Q reference signals, and the model parameters of the equivalent power amplifiers. The terminal device sends the model coefficient of the equivalent power amplifier to the network device. The network device determines, based on the model coefficient, a digital predistortion coefficient corresponding to the digital channel.

Abstract: This application provides a transmission resource configuration method and an apparatus. The method includes: receiving, by a first node, a transmission resource configuration from a second node, where the transmission resource configuration includes a first configuration and a second configuration, the first configuration indicates that a start time resource is uplink and/or an end time resource is downlink in a configuration period, and the second configuration indicates that a start time resource is downlink and/or an end time resource is uplink in a configuration period; and switching, by the first node based on first signaling, a transmission direction of a first time resource in the first configuration by using the first configuration; or using, by the first node, the first configuration or the second configuration based on second signaling.

Abstract: This application provides a resource configuration method and a communication apparatus. In the technical solutions of this application, a donor node may configure different DU resource configurations for an IAB node and two parent nodes of the IAB, so that the IAB node can determine MT resources for different parent nodes based on the different DU resource configurations, to implement resource configuration of the IAB node in a dual connectivity scenario.

Abstract: Embodiments of this application disclose a power control method and a power control apparatus, to alleviate a transmission capacity decrease caused by interference, and improve transmission performance. The method in embodiments of this application includes: A first node determines a first power control parameter. The first power control parameter is used to indicate first transmit power expected by the first node in a first transmission mode. The first node sends a first message to a second node. The first message carries the first power control parameter, and the first message is used to request the first transmit power expected by the first node in the first transmission mode. The second node is an upper-level node of the first node or a donor base station.

Abstract: This application provides a communication method, apparatus, and system. The communication method includes: A terminal device sends first capability information to a network device, where the first capability information indicates a terminal transmission capability corresponding to at least one resource or resource group. The terminal device receives uplink transmission scheduling information sent by the network device, where the uplink transmission scheduling information is determined by the network device based on the first capability information. The terminal device performs uplink transmission based on the uplink transmission scheduling information. According to the method, the network device can obtain resource-level or resource group-level transmission capability information used by the terminal device for uplink transmission.

Abstract: The present disclosure relates to control information sending methods in a wireless communications system. In one example waveform control information sending method, a network device obtains control information that includes uplink transmission waveform indication information, and sends the control information to a terminal. After receiving the control information, the terminal determines, based on the control information, a waveform used to send uplink data.

Abstract: This application provides a communication method and an apparatus. The method includes: A relay device determines multiple pieces of measurement information based on multiple first signals, where each of the multiple pieces of measurement information corresponds to one first signal. The relay device sends the multiple pieces of measurement information to a first network device, and receives forwarding power information from the first network device, where the forwarding power information is determined based on the multiple pieces of measurement information, and the forwarding power information is used by the relay device to forward a signal from a network device or a terminal device.

Abstract: This application provides a communication method and apparatus. The method includes: A network device sends first configuration information to a terminal device, where the first configuration information is used to configure that the terminal device reports one or more pieces of feedback information, the feedback information is used to describe measurement information of N reference signals, each of the N reference signals corresponds to one resource, resources corresponding to the N reference signals belong to a same resource set, each piece of feedback information corresponds to one resource set, the feedback information includes N information groups, an nth information group in the N information groups includes a measurement result of an nth reference signal and/or an identifier of a resource corresponding to the nth reference signal, N is an integer greater than or equal to 1, and n?[1, N].

Abstract: Embodiments of this application provide a communication method and apparatus. The method includes: A terminal device receives a preset inference model from a network device. The terminal device receives a first reference signal from the network device, and measures the first reference signal to determine a measurement result of the first reference signal. The terminal device determines an estimated measurement result of a second reference signal based on the preset inference model and the measurement result of the first reference signal, determines a candidate reference signal set based on the estimated measurement result of the second reference signal, and measures a candidate reference signal in the candidate reference signal set to determine an actual measurement result of the candidate reference signal. According to embodiments of this application, signaling exchange overheads and a delay can be reduced, and energy consumption of the terminal device can be reduced.

Abstract: A symbol processing method and apparatus are provided. The method includes: obtaining, based on a plurality of complex-valued symbols, a first set corresponding to a first transmit symbol and a second set corresponding to a second transmit symbol; performing a copy operation on the first set and the second set, so that both the first set and the second set have a first complex-valued symbol; performing signal processing on the first set and the second set; and performing phase adjustment on the first transmit symbol and/or the second transmit symbol after the signal processing, to ensure that a symbol component whose end position is the first reference point in the first transmit symbol is the same as a symbol component whose end position is the second reference point in the second transmit symbol. This application can ensure that an inter-symbol guard period is flexibly configured.

Abstract: Reference signal sequence mapping and de-mapping methods, and an apparatus are provided, to resolve a problem in a conventional technology that time-domain overheads of a reference signal of a single-carrier waveform are relatively large. In this application, a sending device maps a reference signal sequence to a modulation symbol set, to obtain a multiplexing set, where the multiplexing set occupies one single-carrier time domain symbol. Compared with a solution in which a reference signal sequence occupies one single-carrier time domain symbol, the solution in this application reduces time-domain overheads of the reference signal. In addition, to correctly perform channel estimation or channel sounding for the reference signal, different reference signal sequences meet conditions such as orthogonality or conjugate orthogonality, and locations of the reference signal sequences in different multiplexing sets further meet corresponding conditions, and so on.

Abstract: This application discloses a signal transmission method, including: obtaining, by a terminal device, to-be-transmitted data, uplink control information, and a demodulation reference signal; mapping the to-be-transmitted data, the uplink control information, and the demodulation reference signal to generate multiplexed symbols. The multiplexed symbols include DFT-s-OFDM symbols or OFDM symbols. N first multiplexed symbols are located on one side or two sides of a second multiplexed symbol. A location relationship between each of the N first multiplexed symbols and the second multiplexed symbol satisfies a mapping condition. N is an integer greater than or equal to 1. The first multiplexed symbol is a multiplexed symbol to which the uplink control information is mapped, and the second multiplexed symbol is a multiplexed symbol to which the demodulation reference signal is mapped.

Abstract: In accordance with an embodiment, method includes: receiving first information from a network device, wherein the first information comprises downlink control information, the downlink control information indicates at least one of: a first beam, a forwarding time, an amplification gain, or an on-off control, where the first beam is an access-side beam of a relay device, the forwarding time is a time unit for forwarding a signal, the amplification gain is an amplification multiple or a forwarding power of the signal, and the on-off control is a control for enabling and disabling an amplify-and-forward function; receiving a first signal from the network device or a terminal device; and forwarding, by the relay device, the first signal based on the first information.

Abstract: This application provides a power control method including: receiving, by a second node, radio resource control (RRC) from a first node, where the RRC includes a power control parameter set configured for the second node, the power control parameter set includes a power control index, and the power control index is determined based on a transmission mode or a transmission capability of the second node; receiving downlink control information (DCI) including power control index indication information used to: when the first node schedules the second node, indicate a value of a power control index that is for uplink transmission and that is for the second node; determining a transmit power based on the power control index indication information and the power control parameter set; and sending a signal at the determined transmit power.

Abstract: The present disclosure relates to data transmission methods and apparatuses. In one example method, a relay device receives configuration information from a network device, where the configuration information indicates to transmit a first signal and a second signal in a target time period, the first signal is a signal for communication between the relay device and the network device, and the second signal is a signal transmitted with assistance of the relay device. When at least one of the first signal or the second signal meets a first condition, the relay device transmits the first signal in the target time period. When at least one of the first signal or the second signal does not meet a first condition, the relay device transmits the second signal in the target time period.

Abstract: A resource multiplexing method and apparatus are provided, to determine a set of available symbols in an NR IAB system. A first node determines a time domain position of a DU resource of a communications device, and determines a time domain position of an MT resource of the communications device based on the time domain position and a type of the DU resource and guard interval information. Alternatively, a first node determines a time domain position of an MT resource of a communications device, and determines a time domain position of a DU resource of the communications device based on the time domain position and a type of the MT resource and guard interval information.

Abstract: A first communication apparatus receives first configuration information from the second communication apparatus, where the first configuration information includes information about at least one resource. The first communication apparatus receives at least one first signal from the second communication apparatus by using the at least one resource. The first communication apparatus determines first digital predistortion DPD parameter information based on the at least one first signal received by the first communication apparatus. The first communication apparatus sends the first DPD parameter information to the second communication apparatus.