Abstract: A data transmission method and apparatus are disclosed. The method includes: determining, by a source base station of a terminal in a handover process, first data and a radio air interface protocol sequence number of a data unit used to carry the first data, where the first data includes data that is not acknowledged by a terminal for correct reception during data transmission between the source base station and the terminal. The method further includes sending, by the source base station, the first data and the radio air interface protocol sequence number to a target base station; where the core network connected to the target base station is different from the core network connected to the source base station.

Abstract: Embodiments of this application provide a communication method and an apparatus, to introduce artificial intelligence AI in a radio access network RAN. The method includes: A wireless intelligent controller RIC sends configuration information of one or more AI tasks to a base station. The configuration information of each AI task is used to indicate one or more of the following content of the AI task: a task identifier ID, a task type, task content, a task execution body, and a task status. The AI task may be executed by the base station or a terminal.

Abstract: A communication method and an apparatus are provided. The method includes: An AI device determines an energy saving policy based on collected AI data. The AI device notifies a network device of the energy saving policy. The network device performs an energy saving operation according to the energy saving policy. Compared with a solution in which a network device or an OAM system determines an energy saving policy by using human experience or a simple algorithm and implements the energy saving policy, an intelligent energy saving mechanism of a network can be implemented, and a high requirement of energy saving of the network can be satisfied.

Abstract: Example data processing methods and apparatuses are disclosed. In one example data processing method, a first terminal obtains packet delay budget adjustment information, where the packet delay budget adjustment information is used to indicate an adjusted packet delay budget, a packet delay budget adjustment amount, or a packet delay budget adjustment range. The first terminal adjusts a size of a jitter buffer based on the packet delay budget adjustment information, and then buffers data based on the adjusted jitter buffer.

Abstract: Example data sending methods and apparatus are described. One example method includes sending a first message to a network device by a terminal device. The first message is used to indicate information about remaining time of each of one or more data packets. The remaining time of each of the one or more data packets is used to indicate that the terminal device needs to finish sending each of the one or more data packets before the end of the remaining time. The terminal device obtains information about a resource configured by the network device for the terminal device, wherein the resource is used to send each of the one or more data packets before the end of the remaining time.

Abstract: The present disclosure relates to connection reestablishment methods and apparatus. In one example method, when a handover fails, a terminal reverts back to a source configuration, and obtains a selected cell. The terminal sends a connection reestablishment request to a selected radio access network device. The terminal receives a first message from the selected radio access network device, where the first message includes indication information used to indicate to derive an access network key based on a core network key. The terminal obtains a first core network key based on the indication information, and derives a first access network key based on the first core network key. The terminal communicates with the selected radio access network device by using the first access network key.

Abstract: Embodiments of this application relate to the field of communications technologies and disclose a communication method and a device. The method includes: determining an offset based on a first quantity, wherein the first quantity is a quantity of beams that are used to determine signal quality of a first cell; and determining the signal quality of the first cell based on the offset.

Abstract: Embodiments of this application disclose a mobile edge computing processing method and a related device, which may be applied to a scenario in which a local computing device (MEC) provides a computing service. A radio access network device determines a matched local computing device based on a PDU session setup request message of a terminal device UE and local computing capability information of a local computing device. Then, the radio access network device sets up a PDU session between the local computing device and the terminal device. A network device (including the radio access network device and a core network device) uses the local computing device as a computing resource of a network, and the network device controls communication and interaction between the UE and the local computing device.

Abstract: A computing service implementation method and an apparatus. The method includes: a first radio access network (RAN) device obtains computing capability information of a first communication device; the first RAN device sends a first request to the first communication device, where the first request is for requesting the first communication device to perform a computing service of the first RAN device; the first RAN device receives a first response from the first communication device, where the first response indicates the computing service that is of the first RAN device and that is admitted by the first communication device; and the first RAN device exchanges, with the first communication device, data of the computing service that is of the first RAN device and that is admitted by the first communication device.

Abstract: This application discloses a communication method and apparatus. The method includes: A first access network device receives first uplink data from a terminal device; and sends a request message to a core network device, where the request message requests path switching of user plane data of the terminal device, the request message includes first information, and the first information indicates a first PDU session corresponding to the first uplink data.

Abstract: The present disclosure relates to network slice configuration methods and apparatus. One example method includes determining, by a first network device, network slice configuration information, and sending, by the first network device, the network slice configuration information to a second network device, where the network slice configuration information instructs the second network device to perform network slice configuration based on the network slice configuration information.

Abstract: This application discloses a communication method and a communications apparatus, and relates to the communications field, to reduce power consumption of a terminal. The communication method includes: determining, by a first network device, first information, where the first information includes type information of a synchronization signal block, and the type information of the synchronization signal block is used to indicate that the synchronization signal block is a cell-defined synchronization signal block or a non-cell-defined synchronization signal block; and sending, by the first network device, the first information to a second network device. Embodiments of this application are applied to an indication of the cell-defined or non-cell-defined synchronization signal block.

Abstract: This application discloses a handover method and apparatus. During handover, a source RAN node includes, in a handover message, an indication indicating whether a PDU session supports network slice re-mapping and/or an indication indicating whether the PDU session supports network slice fallback. A target RAN node performs admission control based on the indication, and notifies the source RAN node of an identifier of a network slice to which the PDU session is re-mapped or an indication indicating whether the PDU session falls back to a default network slice. The source RAN node forwards the notification to a terminal device. This reduces signaling overheads caused during handover interaction.

Abstract: This application relates to the field of communication technologies, and discloses a communication method and apparatus. The method includes: A network device receives indication information. The indication information indicates that there is an association relationship between M QoS flows. The network device may further process the M QoS flows based on the indication information. In this manner, when processing the M QoS flows, the network device considers the association relationship between the M QoS flows, to help satisfy a synchronization requirement between different data flows.

Abstract: An embodiment of this application provides a communications method. The method includes: generating, by an first base station, a radio resource control release message on which encryption and integrity protection are performed by using a new key; and sending, by the first base station, the radio resource control release message to a second base station, thereby improving security of communication between the serving device and the terminal and reducing signaling overheads for performing key negotiation over an air interface.

Abstract: Embodiments of this application provide example communication methods and apparatuses. One example method includes receiving, by a first network device, a first request message and uplink data from a terminal, where the first request message is for requesting to resume a suspended radio resource control (RRC) connection. The first network device can then send a second request message to a second network device based on the first request message and the uplink data, where the second network device is a network device previously serving the terminal, and the second request message includes information about the uplink data, where the second request message is for requesting the second network device to release a first data channel between the second network device and a core network device, or the second request message is for requesting the second network device to send a context of the terminal to the first network device.

Abstract: This application discloses a data transmission method and a communication apparatus. The data transmission method includes: The access network device receives a first data packet from a first terminal device, where the first data packet is associated with a terminal group, the terminal group including the first terminal device. The access network device sends the first data packet to a first routing device for forwarding. The first routing device corresponds to the terminal group. The first routing device stores routing information of one or more respective terminal devices of the terminal group. The routing information is for forwarding the first data packet. Signaling overheads can be reduced by using embodiments of this application.

Abstract: The present disclosure relates to radio resource control (RRC) reestablishment methods and apparatuses. In one example method, a terminal device selects a target cell, where the target cell supports an expected network slice. The terminal device sends an RRC reestablishment request message by using the target cell. The expected network slice may include a network slice that the terminal device expects to access, or a network slice corresponding to a PDU session established by the terminal device by using a last serving access network device of the terminal device. The terminal device may select the target cell within a preset time period. For example, the terminal device starts a first timer when the terminal device starts selecting the target cell, and selects the target cell during running of the first timer. The first timer may be specific to one or more network slices or all network slices.

Abstract: Embodiments of this application provide a communication method and a communications apparatus. The method includes: generating a log record, where the log record is recorded by performing MDT log measurement when a terminal is in an inactive state; and when the terminal is in a connected state, sending the generated log record to a network device.

Abstract: Embodiments of the application provide a communications method and apparatus. A target cell is determined based on measurement results of N measured cells and a preset value when there is a first cell satisfying a report trigger condition. A measurement result of the target cell is sent to a base station. A terminal may not only send the measurement result of the cell satisfying the trigger condition to the base station, but also send a measurement result of another cell to the base station. In this way, a quantity of cells that can be selected during determining of handover can be increased, to help the base station select a suitable cell for the terminal.