Abstract: A handover processing method includes: providing multicast service information to a target base station based on target information of the target base station; where the target information includes at least one of following: base station type, supported service information, unsupported service information, or load information.

Abstract: This application discloses a mode switching method, a terminal, and a network-side device. The method may be applied to a target network-side device, and includes: reserving a multicast air interface resource in a case that multicast quality of service QoS information is received from a multicast broadcast network function MB NF, where the multicast air interface resource is used for a terminal to receive multicast service data in a switched-to target mode, and the multicast QoS information corresponds to the multicast service data; and sending the multicast air interface resource to a source network-side device or the MB NF.

Abstract: Disclosed are an access rejection method, apparatus and system, where the access rejection method includes: a first base station receives an access request from a terminal; and the first base station sends an access rejection message to the terminal; where the access rejection message at least carries: a check value generated based on a key of the terminal and at least part of contents of the access rejection message. And further disclosed are related computer storage media and processors.

Abstract: A cell selection method, a cell selection control method and a related device are provided. The cell selection method includes: obtaining cell assistance information of an access network; and performing a cell selection based on the cell assistance information and slice assistance information. The slice assistance information is used to assist in performing the cell selection.

Abstract: Data retransmission method is disclosed. The method includes: obtaining a mapping relationship between GTP-U sequence numbers of N data packets sent by a source node and source PDCP sequence numbers assigned to the N data packets by the source node; and performing data retransmission based on the mapping relationship.

Abstract: A service registration method, a terminal, and a network side device are provided. The terminal includes a first subscriber identity card module associated with a first subscriber identity card and a second subscriber identity card module associated with a second subscriber identity card. The method includes: accessing a first mobile network based on the first subscriber identity card; and transmitting a voice over wireless fidelity (VoWiFi) registration message of the second subscriber identity card based on the first mobile network.

Abstract: Embodiments of this application provide a device interaction method and a core network device. The method includes: receiving, by a first core network device, identifier information of at least one UE sent by a first device, where the at least one UE includes at least one of the following: a UE that has established UE-to-network relay connection with a first UE and a UE that is to establish UE-to-network relay connection with the first UE; and interacting, by the first core network device based on identifier information of a second UE, with a second core network device, where the second UE is any one of the at least one UE; where the first core network device is a core network device serving the first UE, and the second core network device is a core network device serving the second UE.

Abstract: Embodiments of the present application provide a state indication method, a device, and a system. The method comprises: a relay core network device receives first state indication information sent by a first device, the first state indication information comprising at least one of first indication information and second indication information, the first indication information instructing a relay UE to perform UE-to-network relay communication, the second indication information instructing the relay UE to perform UE-to-network relay communication for an emergency service, and the first state indication information being used for determining not to initiate a NAS signaling connection release process of the relay UE.

Abstract: A method, apparatus, and device for determining protocol architecture are provided. The method includes: receiving a target message from a second device, where the target message carries first information; and determining, based on the first information and second information, whether to establish a communication connection to the second device, where the first information is used to indicate architecture information of a first protocol architecture that the second device currently supports and/or prefers, and the second information is used to indicate architecture information of a second protocol architecture that a first device currently supports and/or prefers.

Abstract: The present disclosure provides a mobility management method, a source base station, a target base station, and a terminal device. The method includes: receiving a report message from a terminal device, where the terminal device is a terminal device that receives data of a first multicast service, and the report message includes a measurement result; and transmitting a handover command to the terminal device, where the handover command is used to instruct the terminal device to switch to a target base station, and the target base station is determined based on the measurement result.

Abstract: Embodiments of the present disclosure disclose an identifier information updating method, a terminal, and a network device. The method includes: sending a second source L2 ID of a first terminal to a second terminal, where the second source L2 ID is different from a first source L2 ID used in a sidelink establishment request message.

Abstract: The present disclosure provides a service transmission method, a service transmission mode configuration method, and a related device. The service transmission method includes: receiving a first message from a core-network-side device, where the first message includes a multicast service identifier and mode policy information; and sending, in a first transmission mode, data of a multicast service corresponding to the multicast service identifier, where the first transmission mode is a transmission mode determined based on the mode policy information, or the first transmission mode is a transmission mode indicated by the mode policy information.

Abstract: A transmission mode conversion indication method includes: sending a first message to a core network or sending a second message to a terminal device, so as to indicate that a transmission mode conversion is required, where the first message carries first user information and first multicast group information.

Abstract: An authorization and policy parameter configuration method, a terminal, and a network function are provided. The method is applied to a terminal and includes: sending terminal-to-terminal relay communication capability information and/or a terminal policy container to a first network function; and receiving an authorization and policy parameter for relay communication sent by a second network function, where the authorization and policy parameter for relay communication is generated based on the relay communication capability information and/or the terminal policy container.

Abstract: Disclosed are an access rejection method, apparatus and system, where the access rejection method includes: a first base station receives an access request from a terminal; and the first base station sends an access rejection message to the terminal; where the access rejection message at least carries: a check value generated based on a key of the terminal and at least part of contents of the access rejection message. And further disclosed are related computer storage media and processors.

Abstract: Embodiments of the present invention provide a method for mode switching and a device. The method includes: invoking a mode switch operation towards a second network function, where a parameter of the mode switch operation includes first information, and the first information includes a mode switch command; and the mode switch command is used to notify a target party to perform a mode switch operation.

Abstract: A multicast service implementation method and apparatus and a communications device are provided. The multicast service implementation method is applied to a first network function of a communications device and includes: receiving from a terminal a request carrying multicast service information; and executing a unicast session establishment procedure to establish a unicast session connection to the terminal.

Abstract: A trigger discovery method includes: sending a wake-up discovery request to a network device, where the wake-up discovery request is used for requesting the network device to trigger a second terminal to start a discovery process, and there is a subscription binding relationship between the second terminal and the first terminal; and starting the discovery process in a case that a response message sent by the network device is received, where the response message is used for indicating that the second terminal has started the discovery process.

Abstract: The present disclosure provides a path selection method, a terminal, and a network-side device. The method is applied to a terminal side and includes: transmitting a path selection request to a network-side device; receiving a response message transmitted by the network-side device; and in a case that the response message includes relay path indication information, using a target relay node to perform first transmission, where the relay path indication information includes identification information of a target relay node or configuration information of a candidate relay node, and the target relay node is a relay node, in the candidate relay node, whose configuration information matches a transmission parameter of the first transmission.

Abstract: The present invention provides a multicast service processing method, a multicast service configuration method, and a communications device. The multicast service processing method includes: receiving a multicast area configuration sent by a network device, where the multicast area configuration includes area parameter information of a multicast service; obtaining wireless area information in a case that the multicast area configuration sent by the network device has been received; and determining, based on the area parameter information and the wireless area information, whether the terminal is located in a service area of the multicast service.