Abstract: Embodiments of this application provide an information indication method, a device, and a system, to reduce pilot overheads caused by a reference signal. The method includes: determining, by a base station, that a port used to transmit a first reference signal and a port used to transmit a second reference signal are multiplexed; sending, by the base station, the first reference signal and/or the second reference signal on a multiplexed port; and generating, by the base station, information indicating multiplexing of the port, and sending the information indicating multiplexing.

Abstract: The present disclosure relate to configuration resource indication methods and apparatus. One example method includes receiving, by user equipment, configuration information from a network device, and determining, by the user equipment, a channel state information-reference signal (CSI-RS) measurement resource and a sounding reference signal (SRS) measurement resource based on the configuration information.

Abstract: A path loss determining method and apparatus are provided to satisfy a path loss measurement requirement when there are different transmit powers. The method includes: measuring receive power of a signal sent by a network device; determining transmit power of the signal based on pre-configuration information, where the pre-configuration information is used to indicate correspondences between a plurality of signals and transmit powers, transmit powers of some or all of the plurality of signals are different, and the signal is one of the plurality of signals; and determining a path loss based on the receive power of the signal and the transmit power of the signal.

Abstract: Embodiments of this application disclose beam training methods, apparatuses, and systems. One method includes: receiving, from a network device, interference-related information; receiving, from the network device, a downlink signal sent through two or more beams, wherein the two or more beams comprise an interfering beam that causes interference to a terminal device; and transmitting, to the network device, information related to a beam selected from the two or more beams, wherein the beam is selected by the terminal device based on the interference-related information and a measurement result obtained from measuring the downlink signal.

Abstract: This application provides an example signal transmission method and device. The method includes receiving, by a second node, a first signal sent by a first node, where the first signal includes information about a time resource that needs to be occupied by the first node to perform backhaul transmission, and a receiving/sending status of the first node during the backhaul transmission. The method also includes, when the receiving/sending status of the first node during the backhaul transmission is different from a receiving/sending status of the second node during backhaul transmission, receiving/sending, by the second node, a signal on a resource other than the time resource that needs to be occupied by the first node to perform the backhaul transmission.

Abstract: An embodiment of this application provides a power control method. The method includes: receiving, by a first node from a second node, first power control information associated with a first resource pair link; and sending, by the first node, a first signal to the second node by using a first transmission resource corresponding to the first resource pair link, where transmit power of the first signal is obtained based on the first power control information. An association relationship is established between power control and a resource pair link, so that power control on a resource pair link granularity can be implemented, different power control can be performed based on different channel features, and more accurate transmit power is obtained. In addition, various signals are transmitted on resources corresponding to different resource pair links, so that different power control values can be set for the various signals.

Abstract: This application provides a service transmission method. The method includes: sending, by a first node, a route request to a second node at a first moment, where the route request is used to request a routing path for at least one service; receiving, by the first node, a route response message at a second moment, where the route response message includes a route distinguisher, and the route distinguisher is used to indicate the routing path; and determining, by the first node based on a time interval between the first moment and the second moment, a target service that is in the at least one service and that is served by the routing path. In this way, the first node may determine, based on duration of the time interval between the first moment and the second moment, the target service that can be served by the routing path.

Abstract: The present disclosure relates to example uplink measurement signal indication methods and apparatuses. One example method includes receiving, by a terminal device, signaling sent by a network device, where the signaling carries indication information that indicates a transmit beam for sending an uplink measurement signal by the terminal device, and sending, by the terminal device, the uplink measurement signal to the network device based on the indication information by using the transmit beam.

Abstract: A beam recovery method and apparatus such that the method includes: communicating, by a relay node, with a network device by using a serving beam; after a serving beam failure is detected, further monitoring the serving beam and determining whether the serving beam is recovered; and if the serving beam is recovered, further communicating, by the relay node, with the network device by using the serving beam. According to the beam recovery method, a waste of resources is reduced during beam recovery, and a time for beam recovery is further shortened.

Abstract: Various embodiments provide a relay transmission method, where a first node is a parent node of a second node. In those embodiments, a request message from the first node can be received by the second node, where the request message is configured to request the second node to become a parent node of the first node. Still in those embodiments, indication information can be sent, by the second node, to the first node, where the indication information is used to indicate that a downlink beam sent from the second node to the first node after the second node becomes the parent node is the same as or similar to an uplink beam sent from the second node to the first node when the first node is the parent node. The indication information may be carried in a response message for the request message.

Abstract: Example methods and apparatus for configuring a reference signal are provided. One example method includes determining first information including beam information of beams used by a link between the second node and a third node by a. first node. The first node serves as an upper-level node of a second node. The first node sends configuration information to the second node to indicate a reference signal received or sent by the second node on a target beam. The target beam is at least one of the beams used by the link between the second node and the third node, so that the first node can indicate the second node to receive or send the reference signal based on the beams used by the link between the second node and the third node. The second node may further measure interference between the backhaul links based on the reference signal.

Abstract: Examples synchronization signal configuration methods and apparatus are described. One example method is applied to a relay network including a first node and a second node, and the first node is a parent node of the second node. The example method includes sending synchronization signal configuration information by the first node to the second node, where the synchronization signal configuration information is used to indicate M first synchronization signal time-frequency positions and N second synchronization signal time-frequency positions in a candidate synchronization signal time-frequency position set. The first synchronization signal time-frequency position is used by the second node to send a first synchronization signal, the second synchronization signal time-frequency position is used by the second node to receive or detect a second synchronization signal, the candidate synchronization signal time-frequency position set includes W synchronization signal time-frequency positions, and W?(M+N).

Abstract: A communication method is provided, including: determining, by a first device, a relative power ratio between a phase tracking reference signal (PTRS) and a data channel; determining, by the first device, a transmit power of the PTRS based on the relative power ratio of the PTRS to the data channel; and sending, by the first device, the PTRS to a second device by using the transmit power of the PTRS.

Abstract: This application discloses a communication method and a communications device. The communication method includes: receiving configuration information sent by a base station, where the configuration information includes information about a first signal and quasi-co-location relationship information, and the quasi-co-location relationship information indicates that there is a quasi-co-location relationship between a port for sending the first signal and a port for sending a second signal; and obtaining a measurement quantity of the first signal based on a measurement quantity of the second signal and the quasi-co-location relationship information. According to the method, a quasi-co-location relationship is obtained and a measurement quantity is obtained based on the quasi-co-location relationship.

Abstract: A communication method is provided, including: determining, by a first device, a relative power ratio between a phase tracking reference signal (PTRS) and a data channel; determining, by the first device, a transmit power of the PTRS based on the relative power ratio of the PTRS to the data channel; and sending, by the first device, the PTRS to a second device by using the transmit power of the PTRS.

Abstract: A path loss determining method and apparatus are provided to satisfy a path loss measurement requirement when there are different transmit powers. The method includes: measuring receive power of a signal sent by a network device; determining transmit power of the signal based on pre-configuration information, where the pre-configuration information is used to indicate correspondences between a plurality of signals and transmit powers, transmit powers of some or all of the plurality of signals are different, and the signal is one of the plurality of signals; and determining a path loss based on the receive power of the signal and the transmit power of the signal.

Abstract: The present disclosure relates to power control methods and apparatus. One example method includes determining, by a network device, an uplink channel power control parameter of user equipment (UE), where different uplink channel power control parameters of the UE are used for transmitting different types of data, and sending, by the network device, information indicating the determined uplink channel power control parameter.

Abstract: The present invention relates to a measurement reporting method, and a communications apparatus. In the method, measurement reporting parameters reported to a base station satisfies reporting rules including: (a) a reporting setting with a smaller identifier has priority over a reporting setting with a larger identifier; (b) a serving cell with a smaller identifier has priority over a serving cell with a larger identifier; (c) a reporting type involving a beam index indication has priority over a reporting type involving an RI; and (d) aperiodic measurement reporting has priority over semi-persistent measurement reporting, or semi-persistent measurement reporting has priority over periodic measurement reporting. According to the method, performance of a wireless communications system is improved.

Abstract: This application provides a resource processing method and apparatus. The method includes: determining, by a network device, at least two beams that need to be transmitted; determining, by the network device, a time-frequency resource corresponding to each of the at least two beams; and determining, by the network device, a part of the time-frequency resource corresponding to each beam to serve as a common search space, where the part that corresponds to the common search space and that is of the time-frequency resource is used to carry control information transmitted to a terminal device. The resource processing method and apparatus provided in the embodiments of this application can ensure that all terminal devices detect a complete common search space when the terminal devices are distributed in different directions.

Abstract: Embodiments of this application provide a data transmission method, a network device, and a terminal. When the method is performed by the terminal, the method includes: obtaining, a time-frequency resource used to transmit uplink data, where the time-frequency resource is at least one time-frequency resource block selected from a plurality of time-frequency resource blocks; each of the time-frequency resource blocks is corresponding to one piece of configuration information; and transmitting, the uplink data on the at least one selected time-frequency resource block based on configuration information of the at least one selected time-frequency resource block. The terminal may select a relatively narrow bandwidth to perform uplink transmission, to increase a transmit power of the terminal. In addition, the terminal performs the uplink transmission based on the corresponding configuration information, to further increase a transmit power.