Abstract: Embodiments of this application provide a communication method and a communication apparatus. The method includes: A terminal device determines that a connection establishment failure between the terminal device and a first cell occurs, records first connection establishment failure information, and starts a timer; the terminal device determines, depending on whether the timer runs, a manner of processing connection establishment failure information; and the terminal device sends a connection establishment failure report, where the connection establishment failure report indicates that the connection establishment failure occurs between the terminal device and the first cell. In this way, memory usage and power consumption of the terminal device can be reduced.

Abstract: Embodiments of this application provide a communication method and apparatus. The method includes: A terminal receives first application layer measurement configuration information from a first base station; performs quality of experience QoE measurement based on the first application layer measurement configuration information; receives a first message from a second base station, where the first message indicates whether to retain the first application layer measurement configuration information; and continues to perform QoE measurement when the first message indicates to retain the first application layer measurement configuration information; and/or releases the first application layer measurement configuration information when the first message indicates to not retain the first application layer measurement configuration information.

Abstract: Embodiments of this application provide a communication method, a communications apparatus, and a storage medium. The communication method includes: sending, by a new master network device, a request to an original master network device, to request context information of a terminal device on the original master network device and an original secondary network device; and receiving the context information of the terminal device on the original master network device and the original secondary network device from the original master network device. This application can effectively simplify implementation steps of resuming a multi-connectivity mode by the terminal device, reduce signaling procedures, and shorten a delay, thereby improving network transmission efficiency.

Abstract: A connection resume request method includes generating, by a terminal, a new access stratum key; sending, by the terminal to a target base station, a connection resume request message requesting to resume a radio resource control (RRC) connection; receiving, by the terminal, a connection resume rejection message from the target base station, wherein the connection resume rejection message indicates that the resuming of the RRC connection is rejected; and resuming, by the terminal, the new access stratum key to a previous access stratum key, wherein the previous access stratum key is an access stratum key that is used, before the apparatus enters an inactive state, by the terminal and the source base station.

Abstract: A communication method and a communications apparatus, the method including receiving, by a second network device, from a third network device, first identification information of a first radio access network area to which a first cell corresponding to the third network device belongs, and sending, by the second network device, second identification information of the first cell and the first identification information of the first radio access network area to a first network device.

Abstract: Embodiments of this application provide a data transmission method and apparatus. The method includes: A terminal device sends a first data segment and auxiliary information to a first network device, where the first data segment is one of one or more data segments corresponding to data used for machine learning, and the auxiliary information indicates a target device of the first data segment. According to the method, the first network device can determine the target device based on the auxiliary information, so that massive data that is collected by the terminal device and that is used for machine learning is accurately transferred to a device that is in a network and that performs machine learning. This helps the network provide a better communication service based on a machine learning result, to improve network work efficiency.

Abstract: Embodiments of this application disclose a model configuration method and an apparatus. The method includes: sending, to a terminal that is in a first cell, first-part information of a first model used by the terminal to process data, and sending first indication information that indicates second-part information of the first model, where the second-part information is information to be sent to the terminal when the terminal is located in a second cell, and the first cell and the second cell are different cells. Solutions of embodiments of this application may be widely applied to the field of communication technologies, artificial intelligence, the internet of vehicles, the internet of smart home, or the like.

Abstract: A communication method for a terminal device includes receiving a conditional handover (CHO) command from a source network device. The communication method also includes selecting, by the terminal device, a cell in response to a radio link failure (RLF) in a source cell before the terminal device determines a target cell. The target cell is determined according to the CHO command. The communication method additionally includes sending first information to a network device. The first information includes a first parameter. The first parameter is related to a CHO failure caused by the RLF in the source cell.

Abstract: This application discloses a communication method and apparatus. A master base station sends, to a candidate secondary base station, a first message including an identifier of each candidate PSCell in a first candidate PSCell list and a first identifier corresponding to each candidate PSCell. The master base station receives, from the candidate secondary base station, a second message including an identifier of each candidate PSCell in a second candidate PSCell list, a first identifier corresponding to each candidate PSCell, and radio resource configuration information corresponding to each candidate PSCell, where the first candidate PSCell list includes the second candidate PSCell list. The master base station sends, to a terminal, a third message including the identifier of each candidate PSCell in the second candidate PSCell list, the first identifier corresponding to each candidate PSCell, and the radio resource configuration information corresponding to each candidate PSCell.

Abstract: A communication method and an apparatus, to determine a terminal that is to execute an artificial intelligence (artificial intelligence, AI) task, so that execution of the AI task is more targeted, and an execution result is more accurate. The method includes receiving first information from an AI apparatus, where the first information indicates information about a first terminal capable of executing a first AI task; receiving information from a second terminal; and determining, based on the first information and the information about the second terminal, whether the second terminal is configured to perform the first AI task.

Abstract: A communication method and a communication apparatus. The method includes recording first information after a terminal device is successfully handed over from a first network device to a target network device, and recording second information after a connection between the terminal device and the target network device fails.

Abstract: A communication method, an apparatus, and a communications system. A terminal device receives first configuration information. In response to an RLF occurring in a source MCG or a source SCG of the terminal device, the terminal device sends a first message including information about a time period from the terminal device receiving the first configuration information to the radio link failure occurring in the source MCG or the source SCG, or information about a time period from the RLF occurring in the source MCG or the source SCG to the terminal device sending the first message. In this way, a network device exchanges proper and valid information between network devices based on the information reported by the terminal device, to optimize parameters.

Abstract: Embodiments of this application provide a data transmission method and device. The method includes: obtaining, by a first access network device, a first message from a second access network device, where the first message requests context information of a terminal device; and sending, by the first access network device, a data packet to the second access network device. The first access network device is a corresponding access network device of the terminal device before the re-establishment procedure, and the second access network device is a corresponding access network device when the terminal device initiates the re-establishment procedure.

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: 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: Embodiments of this application provide a communication method, a communications apparatus, and a storage medium. The communication method includes: sending, by a new master network device, a request to an original master network device, to request context information of a terminal device on the original master network device and an original secondary network device; and receiving the context information of the terminal device on the original master network device and the original secondary network device from the original master network device. This application can effectively simplify implementation steps of resuming a multi-connectivity mode by the terminal device, reduce signaling procedures, and shorten a delay, thereby improving network transmission efficiency.

Abstract: This application provides a mobility measurement method and an apparatus, to help resolve a problem of validity of mobility measurement of a terminal device in a conventional technology. The method includes: A network device sends a message to a terminal device, where the message includes a plurality of sets of measurement configuration information; and the terminal device uses one of a plurality of sets of measurement configurations from the network device for mobility measurement based on a current location and/or a current time. According to the method, validity of mobility measurement is improved, and this helps the terminal device obtain a good service.

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: This application provides a configuration method and an apparatus, and relates to the field of communications technologies, so that in a scenario in which an SCG is deactivated, a network side can activate the SCG or a cell in the SCG by using a MAC CE. The method includes: A terminal receives a MAC CE from a first node, where the MAC CE is for activating or deactivating one or more cells in a cell group managed by a second node; and then the terminal activates or deactivates, based on the MAC CE, the one or more cells in the cell group managed by the second node.

Abstract: A report transmission method includes determining a quantity of target reports and, in response to the quantity of target reports being greater than or equal to a first quantity, sending a first report to a first network device. The first report includes one or more target reports. A type of the target report is a first type that includes one or more of an advance measurement report, a logged minimization of drive tests report, an accessibility failure report, a random access report, a radio link failure report, a mobility history report, or a radio link failure-like report. The radio link failure-like report is for logging a first event and/or a second event. The first event is when a quantity of data retransmissions of a terminal device is greater than or equal to a first preset quantity of times and less than a second preset quantity of times.