Abstract: This application provides example resource configuration methods, example apparatuses, and example computer-readable storage medium. One example method includes obtaining, by a distributed unit (DU) side of a first node, a first resource configuration and at least one second resource configuration, where the first resource configuration indicates the DU side of the first node to communicate with at least one of a terminal device or a second node by using the first resource configuration, the second resource configuration indicates the DU side of the first node to communicate with the second node by using the second resource configuration, the first node is a relay node, and the second node is a child node of the first node. The DU side of the first node can then communicate with the at least one of the terminal device or the second node.

Abstract: Embodiments of this application provide a communication method and an apparatus. The method includes: receiving configuration information from a first node or a third node, where the configuration information indicates time-frequency information of a SIB1 of a distributed unit DU of the first node; and determining, based on the obtained time-frequency information of the SIB1 of the DU of the first node, an unavailable resource of a mobile termination MT function of the first node, where the first node is an integrated access and backhaul IAB node, the second node is a parent node of the first node, and the third node is a donor node. The technical solution provided in this application can effectively avoid a resource conflict between the MT function and the DU of the IAB node.

Abstract: This application provides a communication method and a communication device. The method includes: A terminal device obtains an uplink timing advance TA of a serving cell. The terminal device obtains a downlink signal time difference between the serving cell and a neighboring cell. The terminal device obtains an uplink TA of the neighboring cell based on the uplink TA of the serving cell and the downlink signal time difference. The terminal device sends an uplink signal to the neighboring cell based on a downlink subframe timing and the uplink TA of the neighboring cell. The uplink TA of the neighboring cell is obtained, so that the terminal device can send the uplink signal to the neighboring cell based on the uplink TA of the neighboring cell.

Abstract: This application provides a resource configuration method and apparatus. A multiplexing type between a second functional unit and each of one or more antenna panels of a first functional unit is indicated to an IAB node, so that the IAB node obtains a resource configuration of an MT or a resource configuration of a DU based on the multiplexing type. This helps implement a resource configuration in the IAB node in a case of a plurality of antenna panels.

Abstract: This application provides a random access resource configuration method and an apparatus. The method includes: A first network device receives configuration information of a first physical random access channel PRACH resource; the first network device receives location adjustment information, where the location adjustment information is used to indicate to adjust a location of at least a part of the first PRACH resource; the first network device determines a second PRACH resource based on the configuration information of the first PRACH resource and the location adjustment information; and the first network device sends a random access request to a second network device on the second PRACH resource. In the foregoing technical solutions, the first network device can adjust the configured first PRACH resource, and perform random access by using the second PRACH resource obtained after the adjustment.

Abstract: This application provides a communication method and a communications apparatus. The method includes: receiving, by a terminal device, conditional handover configuration information from a first network device, where the first network device is a network device to which a serving cell belongs, and the serving cell is a cell that currently accessed by the terminal belongs; and determining, by the terminal device, a first target cell based on the conditional handover configuration information.

Abstract: Data transmission methods and apparatuses for wireless backhaul networks are described. A wireless backhaul node determines one or more reporting nodes for a data volume of a first-type data packet from a plurality of next-hop nodes of the wireless backhaul node on an uplink based on the data volume of the first-type data packet, a data volume of a second-type data packet, and a data volume of a third-type data packet. The wireless backhaul node sends, to the one or more reporting nodes, a buffer status report used to indicate the data volume of the first-type data packet. At least one of the first-type data packet, the second-type data packet, and the third-type data packet includes a data packet from an adaptation layer entity of the wireless backhaul node and/or a data packet from a radio link control layer entity of the wireless backhaul node.

Abstract: This application provides a transmission parameter configuration method and an apparatus. The method includes: A first node receives a transmission configuration message, where the transmission configuration message includes transmission configuration index information and a transmission parameter corresponding to the transmission configuration index information, and the transmission configuration index information is used to identify different transmission modes; the first node obtains a transmission indication message, where the transmission indication message includes the transmission configuration index information, and the transmission indication message is used to indicate the first node to apply the transmission parameter corresponding to the transmission configuration index information; and the first node performs, based on the transmission configuration index information, data transmission by using the transmission parameter corresponding to the transmission configuration index information.

Abstract: This application provides a method for reporting a measurement result of interference measurement, to implement interference management performed by a parent node on a child node in an IAB system. The method includes: performing, by a second node, interference measurement to obtain one or more measurement results, the interference measurement includes interference measurement in a first mode and/or interference measurement in a second mode, and sending, by the second node, an uplink signal to the first node, the uplink signal includes the one or more measurement results, the uplink signal includes an indication field, and the indication field is used to indicate a mode of interference measurement corresponding to each of the one or more measurement results.

Abstract: This application provides a flow control method and apparatus, and relates to the field of communications technologies. A relay device indicates flow control to an upper-level node to avoid spectrum resources waste because of excessively small amount of data transmission or an excessively large amount of data transmission from an upper-level node. The method includes: A first node determines to indicate a second node to perform flow control; and the first node sends a first flow control indication to the second node. The first flow control indication is carried in adaptation layer control signaling, an RLC control message, or a MAC CE. The first flow control indication includes identifiers of one or more bearers and flow control information. The second node is a relay node or a donor base station.

Abstract: This application provides a communication method and a communications apparatus. A first entity buffers data, so that a packet loss caused by backhaul link switching or a radio link failure can be avoided as much as possible. The communication method is applied to a relay system. The relay system includes a first node, a source node, and a target node, and the source node provides a service for the first node. The method includes: determining, by the first node, to be handed over from the source node to the target node; and storing, by the first node, data buffered in at least one first entity, where the first entity is a radio link control RLC entity or an adaptation layer entity.

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: This application provides a method and an apparatus for determining an uplink resource. The method includes selecting a target uplink resource among the resources on a plurality of uplink carriers, and sending, to a network device using the target uplink resource, a beam failure recovery request message. In one embodiment, when there is a plurality of uplink carriers, a resource used for the beam failure recovery request message may be selected by a terminal device from the plurality of uplink carriers, to improve the efficiency of beam failure recovery.

Abstract: This application discloses a communication method and an apparatus. When a terminal device switches to a target cell or is connected to a new primary cell, by requesting a network device to release a session corresponding to a network slice that is not supported by the target cell or the new primary cell and to keep a session corresponding to a network slice that is supported by the target cell or the new primary cell, the session corresponding to the network slice that is not supported by the target cell or the new primary cell can be quickly released, and a network resource is saved while a session corresponding to a network slice supported by the target cell or the new primary cell is enabled to be continued.

Abstract: An IAB node switching method is applied to a relay system, and the relay system includes a donor base station and a first IAB node. The donor base station provides a gateway function for the first IAB node. The first IAB node receives a first BWP configuration from the donor base station, where the first BWP configuration includes a BWP configuration of a second IAB node, and the second IAB node is a candidate upper-level node of the first IAB node. The first IAB node switches to the second IAB node. According to the IAB node switching method, the IAB node, and the donor base station that are provided in this application, service availability of an IAB node is ensured when the IAB node has a plurality of upper-level nodes.

Abstract: This application relates to a method applied to a radio access network. Where the method includes: establishing, by a first node, a first path and a second path between a first node and a second node, where both the first node and the second node are nodes in the radio access network, and the first node is a wireless backhaul node, a donor node, or a distributed unit of the donor node; sending, by the first node, a data packet to the second node through the first path; and when the first node determines that a path change condition is met, changing, by the first node, from the first path to the second path to send the data packet to the second node.

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: This application provides a communication method and a communications apparatus. The method includes: in a process in which a terminal device performs beam failure recovery in a first bandwidth, determining, by the terminal device, that an operating bandwidth needs to be switched from the first bandwidth to a second bandwidth; and switching, by the terminal device, from the first bandwidth to the second bandwidth according to a preset policy. According to embodiments of this application, the operating bandwidth can be switched in the beam failure recovery process.

Abstract: This application relates to a communications method. The method in this application includes: receiving, by the wireless backhaul device, a message that is sent by a first network device and that is used to indicate the wireless backhaul device to be handed over to a second network device; and sending, by the wireless backhaul device to the second network device in a process in which the wireless backhaul device is handed over to the second network device or in a case in which the wireless backhaul device completes being handed over to the second network device, a message carrying information about a resource of a first link. This application is applicable to a handover procedure of the wireless backhaul device.

Abstract: This application provides a data transmission method and apparatus, to reduce wastes of transmission resources. The method includes: receiving, by a first node, a data packet from an air interface, where the first node is a wireless backhaul node, and the wireless backhaul node is configured to provide a wireless backhaul service for a node that wirelessly accesses the wireless backhaul node; duplicating, by the first node, the data packet to obtain M data packets, where M is an integer greater than 1; and splitting, by the first node, the M data packets, and sending the M data packets to a second node through at least two paths. This application relates to the field of communications technologies.