Abstract: A method and an apparatus for transmitting a timing difference. The method includes obtaining, by a master node, a measurement value of a timing difference between a first cell and a second cell, and sending, by the master node, the measurement value of the timing difference and identification information of the second cell to a secondary node, where the first cell is a primary cell corresponding to the master node, the second cell includes a primary secondary cell corresponding to the secondary node or another cell different from the primary secondary cell, and the identification information of the second cell includes a physical cell identifier (PCI) and frequency information of the second cell.

Abstract: A communication method and a related apparatus provide for differences between internal resources of a base station to support different slice service capabilities on a RAN side. In the communication method, when a first distributed unit (DU) sets up a connection to a first central unit (CU) but the first CU does not support a first slice, and a second CU supports the first slice, the first DU may establish a connection to the second CU based on transport layer information of the second CU and an identifier or a name of the second CU, or the second CU may update the connection between the first CU and the first DU to a connection between the second CU and the first DU. A difference between internal resources of a base station can be more fully utilized to support different slice service capabilities on a RAN side and improve flexibility and coverage of providing a slice service for user equipment.

Abstract: A model configuration method and an apparatus are provided. The method includes: Operations, administration and maintenance (OAM) receives a first model request message from a first access network device. The OAM determines a first model based on the first model request message and a first mapping relationship, where the first mapping relationship includes a mapping relationship between a model, a model application scenario, and a model function, or the first mapping relationship includes a mapping relationship between a model, a model performance level, and a model function. The OAM sends information about the first model to the first access network device.

Abstract: This application provides a communication method and apparatus. The method includes: A first node receives a beam set and first indication information from a second node, where the beam set includes at least one beam. The first node determines, based on the first indication information, identification information of at least one beam that needs to be forwarded by the first node in the beam set. The first node forwards, based on the identification information of the at least one beam that needs to be forwarded by the first node in the beam set and receiving time information of the at least one beam that needs to be forwarded by the first node, the at least one beam that needs to be forwarded by the first node. The method is applied to a smart repeater, to implement smart beam forwarding by the repeater.

Abstract: Example methods and apparatuses are provided. An example method includes receiving first indication information. The first indication information indicates that a trajectory of a first terminal device matches a trajectory of a second terminal device. The method further includes sending second indication information to the first terminal device. The second indication information indicates to change a trajectory information reporting periodicity to a second periodicity, or the second indication information indicates to suspend trajectory information reporting. The second periodicity is greater than a first periodicity, and the first periodicity is the trajectory information reporting periodicity before the first indication information is sent.

Abstract: A data processing method and apparatus are disclosed, and the method includes: determining a radio bearer (RB) to which a first flow is mapped changing from a first RB to a second RB; and sending end indication information. Data packet disorder can be avoided by said method and apparatus.

Abstract: Embodiments of this application disclose a communication method and apparatus, to improve stability and reliability of data transmission in an integrated access and backhaul (IAB) network. A first node is served by a first master cell group (MCG) and a first secondary cell group (SCG), and a child node of the first node is a second node. The method includes: The first node sends RLF indication information to the second node when the first SCG is for transmitting an F1 interface user plane service, no radio link failure (RLF) occurs in the first MCG, and an RLF occurs in the first SCG.

Abstract: A communication method, a related device, and a system. The method includes: a first network device receives first information from a terminal device, where the first information includes a first delay and a second delay, the first delay is a delay of the terminal device on a first path, the second delay is a delay of the terminal device on a second path, and data packets transmitted on the first path and the second path belong to a first data radio bearer (DRB). The first network device determines an uplink delay of the first DRB based on the first information, a fourth delay, and a fifth delay, where the fourth delay is a network-side delay on the first path, and the fifth delay is a network-side delay on the second path.

Abstract: Embodiments of this application provide a communication method and apparatus, a storage medium, and a computer program product. The communication method includes: in response to impact of a maximum permissible exposure MPE, recording radiation impact information generated due to the impact of the MPE; receiving a first radio resource control RRC reconfiguration message from a source base station; recording a measurement report; and sending the measurement report and the radiation impact information to the source base station. According to embodiments of this application, impact of the MPE on mobility can be reduced, and a handover success rate can be increased.

Abstract: Embodiments of this application provide an information transmission method, an apparatus, and a system. A first network device sends, to a terminal device, conditional handover configuration information that includes information about candidate cells and a handover trigger condition; after receiving the conditional handover configuration information and performing a conditional handover, the terminal device sends, to a second network device, a first failure cause value corresponding to a candidate target cell and/or a second failure cause value corresponding to a to-be-determined cell during the conditional handover; and the second network device receives the first failure cause value and/or the second failure cause value from the terminal device, and sends the first failure cause value and/or the second failure cause value to the first network device.

Abstract: A communication method and a communication apparatus. A communication device receives first information, where the first information is usable to indicate process parameter information of at least one time of clear channel assessment of a first node. The communication device sends second information, where the second information is usable to indicate a clear channel assessment policy of the first node, the clear channel assessment policy is obtained based on the first information, and the clear channel assessment policy includes detection parameter information of the clear channel assessment.

Abstract: Embodiments of this application provide a synchronization signal/physical broadcast channel block (SSB) measurement method and an apparatus. One example method includes that a terminal device receives first information and second information. The first information indicates a time domain position of an SSB sent by a serving cell, and the second information indicates a set of SSBs that the terminal device needs to measure and that are sent by a neighboring cell. The terminal device measures, in a first measurement window based on the first information, the SSB sent by the serving cell. The terminal device measures, in a second measurement window based on the second information, the SSB sent by the neighboring cell.

Abstract: This application relates to the field of wireless communications technologies, and in particular, to a communication method, apparatus, and system. This application provides a communication method. The method includes: a user equipment sends a first message to a secondary base station, where the first message is used to indicate that an exception occurs on a connection between the user equipment and a master base station; and the user equipment receives a second message sent by the secondary base station, where the second message is used to indicate whether to recover the connection to the master base station. This aims to quickly recover the connection between the user equipment and the master base station through interaction between the user equipment and the secondary base station, thereby reducing interruptions of data transmission and/or signaling transmission, and further improving system performance and user experience.

Abstract: A method and apparatus for training an artificial intelligence AI model in a wireless network are provided. The method includes: sending first configuration information to a terminal participating in federated learning, where the first configuration information is used to configure at least one of the following: training duration, a time-frequency resource, and a reporting moment; and same training duration, a same time-frequency resource, and a same reporting moment are configured for different terminals participating in federated learning; and receiving a signal obtained through over-the-air superposition of gradients reported by the terminals, where the gradients are gradients that are of an AI model whose training is completed within the training duration and that are reported by the terminals at the reporting moment by using the time-frequency resource.

Abstract: Embodiments of this application provide a cell handover method and a communication apparatus. The first network element receives a first random access request message from the terminal, where the first random access request message includes information indicating the second network element, and a first cell group managed by the first network element and a second cell group managed by the second network element belong to a dynamic cell set DCS. The first network element sends, to a core network element, a first connection request message including first DCS indication information, and the first DCS indication information indicates the core network element to deactivate a connection to a network element to which a cell group that is in the DCS and that was accessed by the terminal belongs. The first network element receives a first connection acknowledgment message from the core network element.

Abstract: Embodiments of this application provide a method for configuring a dynamic cell set, and a communication apparatus. A first network element sends a first request message to a second network element. The first request message is used to request to establish a connection to the second network element. A first cell group managed by the first network element and a second cell group managed by the second network element belong to a candidate cell set of a dynamic cell set (DCS). The first network element receives, from the second network element, a first response message in response to the first request message. Before a terminal is handed over, the first network element requests to establish the connection to the second network element to configure the dynamic cell set for the terminal.

Abstract: Embodiments of this application provide a communication method and apparatus. The method includes: A first node generates node configuration information and sends the node configuration information to a second node, where the node configuration information is used for conversion of a first beam set sent by the first node into a second beam set sent by the second node. This method is applied to a smart repeater for smart beam forwarding.

Abstract: The present disclosure provides a communication method and apparatus, to improve security of applying artificial intelligence in a network. The method includes: obtaining first information, where the first information indicates an anti-attack policy of first data, and the first data includes training data and/or inference data of a model; and determining the first data based on the first information.

Abstract: A source base station receives a first data packet from a core network device; a target base station receives a second data packet from the core network device, where the second data packet is a duplicate of the first data packet, and the first data packet and the second data packet each include a first index; the source base station sends first indication information to the target base station, where the first indication information indicates a mapping relationship between the first index and a second index; the source base station sends a third data packet to a user equipment UE in response to the first data packet; the target base station sends a fourth data packet to the UE in response to the second data packet, where the third data packet and the fourth data packet each include the second index.

Abstract: This application provides a communication method and apparatus. The method includes: a terminal device receives conditional handover configuration information from a first network device, where the configuration information is used to configure a trigger condition of a conditional handover, and the first network device is a network device to which a serving cell currently accessed by the terminal device belongs. The terminal device determines a first target cell based on the conditional handover configuration information, where the first target cell is a cell in at least one candidate target cell that satisfies the trigger condition.