Abstract: A method includes: receiving, by a network device, k channel measurement values, k channel measurement resource identifiers, and k interference measurement resource identifiers that are sent by user equipment, where k is an integer greater than or equal to 1, each channel measurement value corresponds to one channel measurement resource identifier and one interference measurement resource identifier, and the channel measurement value is calculated based on the channel measurement resource identifier and the interference measurement resource identifier that correspond to the channel measurement value.

Abstract: Embodiments of this application provide a power headroom reporting method and apparatus. Impact of introduction of multi-beam transmission, a plurality of time-frequency resource configurations, or an uplink multi-waveform technology on a power headroom is considered, so that the power headroom is calculated and reported more accurately, to help a network side make a scheduling decision, thereby improving communication performance.

Abstract: This application provides a communication method, a terminal device, and a network device. The method includes: receiving, by the terminal device, configuration information, where the configuration information is used to instruct the terminal device to jointly report channel state information CSI for at least two groups of channel state information-reference signal CSI-RS resources; receiving, by the terminal device, CSI-RSs carried on the at least two groups of CSI-RS resources; and jointly reporting, by the terminal device, CSI based on a result of measuring the CSI-RSs carried on the at least two groups of CSI-RS resources. According to embodiments of this application, transmission performance can be improved.

Abstract: This application describes a resource indication method and a communications device. A resource indication method may include sending, by a first device, first indication information to a second device in an nth time unit, where the first indication information indicate a first time domain resource of a first link or a second link in an (n+k0)th time unit to an (n+k1)th time unit. In the method, the first link is a link between the first device and the second device, the second link is a link between the second device and a third device, k0 is an integer greater than or equal to 0 and less than or equal to k1, and k1 is an integer.

Abstract: Example uplink reference signal sending methods and apparatus are described. One example method includes sending signaling to a terminal device by an access network device. The terminal device determines a sequence type of an uplink reference signal based on the signaling. The terminal device determines transmit power of the uplink reference signal based on the sequence type of the uplink reference signal, and sends the uplink reference signal by using the transmit power of the uplink reference signal.

Abstract: The present disclosure relates to communications methods, systems, and devices. One example communications method includes when a base station determines that a quasi-co-location (QCL) relationship exists between antenna ports of at least two serving cells in a same serving cell group, sending, by the base station and to user equipment (UE), QCL indication signaling used to indicate that the QCL relationship exists between the antenna ports of the at least two serving cells in the same serving cell group, where the same serving cell group is a group predefined according to a preset rule or is a group obtained after the base station groups serving cells allocated to the UE.

Abstract: Embodiments of the present invention provide a signal transmission method. User equipment receives a first signal from a wireless network device; and the user equipment determines spatial information of a to-be-transmitted second signal based on the first signal, and transmits the to-be-transmitted second signal by using the spatial information. An uplink transmit beam is determined by using related information of a downlink receive beam, so that the UE can efficiently determine spatial information of an uplink signal to be transmitted by the UE.

Abstract: A communications method, apparatus, and system are provided. The method includes: receiving, by a terminal, configuration information from a radio access network (RAN) node, where the configuration information is used to configure precision of a multi-stage codebook, and codebook precision at different stages is different; and performing, by the terminal, reporting for codebook information based on the configuration information, where information about an Mth-stage codebook limits a range of an (M+1)th-stage codebook, and M is a positive integer and is less than a codebook stage quantity. The RAN node configures the precision of the multi-stage codebook for the terminal to enable the codebook precision at all the stages to be different, to obtain a more flexible codebook. In addition, information about a previous-stage codebook limits a range of a current-stage codebook, so that the terminal can perform codebook measurement and reporting within a specific range, thereby reducing reporting overheads.

Abstract: The present disclosure discloses an uplink signal sending method and receiving method, a terminal, and a base station. The method includes: receiving, by a terminal, downlink signaling delivered by a base station, and determining, based on the downlink signaling, a waveform used by the terminal; determining, by the terminal based on a correspondence between a waveform and a power difference, a power difference corresponding to a target time-frequency resource; determining, based on the determined power difference, an uplink transmit power of an uplink signal that is mapped on the target time-frequency resource, and sending the uplink signal by using the power. The target time-frequency resource refers to an OFDM symbol multiplexed by an RS and a channel, or may be an RE that is used for mapping a channel and that is in an OFDM symbol multiplexed by an RS and a channel.

Abstract: A method relating to quasi co-location functionality for wireless communication includes: a radio access network device sending signaling to a terminal device, where the signaling includes a quasi co-location type and at least one set of configuration parameters associated with the quasi co-location type, and the terminal device applying one set of configuration parameters associated with the first quasi co-location type, to learn of at least two quasi co-located antenna ports effective when at least one channel large-scale characteristic parameter associated with the first quasi co-location type is applied.

Abstract: Embodiments of the present invention provide a method which includes: a terminal device is configured to send precoding matrix indicator information to a radio access network device, wherein the precoding matrix indicator information is used to indicate a precoding matrix in a codebook, and the codebook comprises information about a quantity of corresponding antenna panels and information about a phase difference between different corresponding antenna panels; and the terminal device receives downlink data from the radio access network device.