Abstract: Embodiments of this application provide example communication methods and example devices. One example method includes sending, by a first access network device, a system information block to a terminal device, where the system information block includes first information indicating that a cell served by the first access network device supports non-public network (NPN) onboarding, where the first information includes second information indicating a supported onboarding NPN, and the second information includes at least one of information about an identifier of the supported onboarding NPN or first indication information, where the first indication information indicates a support of onboarding. The first access network device can then receive a radio resource control (RRC) setup complete message from the terminal device, where the RRC setup complete message indicates that the terminal device requests NPN onboarding.

Abstract: The disclosure provides service processing methods. One example method includes that a first network element sends a first message to a second network element, where the first message is used to request to obtain location information of a terminal device. The first network element obtains the location information from the second network element, then the first network element determines, based on the location information, whether the terminal device is located in a first non-restricted area. The first network element allows the terminal device to obtain a service if the terminal device is located in the first non-restricted area or the first network element disallows the terminal device to obtain a service if the terminal device is not located in the first non-restricted area.

Abstract: A subscription information processing method and apparatus, and a device. The method includes: An access control device obtains authorization information from a target network device, where the authorization information includes an identifier of a first terminal and authorization operation indication information for subscription information of the first terminal; the access control device obtains a subscription information processing request from a second terminal, where the subscription information processing request includes an identifier of the second terminal; and the access control device processes subscription information corresponding to the identifier of the second terminal based on the authorization operation indication information in response to the identifier of the first terminal matching the identifier of the second terminal.

Abstract: A data transmission method and apparatus. The method includes: a core network element receives a first message sent by a first terminal device. The first message is used to request to establish a first PDU session. The core network element determines, based on group information corresponding to the first terminal device, that the first terminal device needs to perform local routing. The group information includes a group identifier ID and a group member list. The core network element obtains binding information. The binding information includes the group ID and session information of the first PDU session, and the session information includes one or more of a session ID, a TEID, and a QFIs of the first PDU session. The core network element sends the binding information to a first access network node. This can implement IAB based local routing, and shorten a transmission latency.

Abstract: A network access method and apparatus for improving network access accuracy of a terminal device are disclosed.

Abstract: This application discloses a communication method and apparatus, to improve transmission efficiency of a control plane message of a terminal according to a control and provisioning of wireless access points protocol. In this application, a control request message of a terminal may be transmitted between a first communication apparatus and a second communication apparatus through a target channel. Because the target channel supports concurrency of a plurality of messages, transmission efficiency of the control request message of the terminal can be improved.

Abstract: A first network element first obtains an access request including access location information of a first terminal device; then, the first network element may obtain subscription information including subscription location information of the first terminal device; when the first network element determines that the access location information of the first terminal device does not belong to the subscription location information, the first network element may obtain allowed information for allowing the first terminal device to access a network at an access location corresponding to the access location information; and the first terminal device may further be allowed, based on the allowed information, to access the network at the access location corresponding to the access location information.

Abstract: The embodiments of the application disclose a mobile handover method. The method includes: a first network device receives first information, and learns that a first terminal device is handed over to a target access network device. The first network device sends second information to a second network device, and the second network device determines, based on the second information, whether to reselect a target user plane function device for the first terminal device; and/or the first network device sends third information to a third network device, and the third network device determines, based on the third information, whether to reselect a target application server for the first terminal device. If the target user plane function device and/or the target application server need/needs to be reselected, a user plane function device and/or an application server need/needs to be handed over in a timely manner.

Abstract: A communication method and apparatus. A user plane network element perform refined differentiated processing on different data packets to adapt to and meet different user requirements and network conditions. A first user plane network element receives a first data packet, where the first data packet carries first indication information. The first user plane network element processes the first data packet based on the first indication information. The first indication information includes one or more of the following: synchronous transmission indication information, packet discard indication information, data type indication information, charging indication information, statistics indication information, or priority indication information.

Abstract: A communication method and an apparatus are provided, so that a terminal device can flexibly perform a handover procedure in a multicast service scenario. The method includes: sending, by a source access device, a first message to an access controller, where the first message is used to request to hand over a terminal device to a target access device, and the first message includes a multicast service context of the terminal device; and receiving, by the source access device, a fifth message from the access controller, wherein the fifth message is used to respond to the message used to request to hand over the terminal device to the target access device, and the fifth message comprises indication information indicating whether to forward multicast service data.

Abstract: A user plane network element management method, apparatus, and system are provided so that a session management network element can correctly address a data plane instance. The session management network element determines information about a target data plane instance, where the information about the target data plane instance includes a routing indicator, the routing indicator is used to determine an address of the target data plane instance, and the target data plane instance is associated with a wireless integrated access and backhaul (IAB) node.

Abstract: This application provides a method for identifying a terminal device and a communications apparatus. A core network element obtains classification information for classifying a terminal device, and then determines, based on the classification information and a parameter of a first terminal device, a type of the first terminal device, to identify the first terminal device. In this process, the core network element identifies the first terminal device in a supervision area by using the classification information and the parameter of the first terminal device, to identify a terminal device that is not registered in a supervision system, thereby improving security of the terminal device.

Abstract: Embodiments of this application provide a session management method to provide quality of service (QoS) assurance for a service of a terminal. The method includes: determining, by a first control plane network element in a second network, to manage a session, where the session is used to provide a connection in the first network for a terminal, and the first control plane network element is a network element in the first network; and managing, by the first control plane network element, the session.

Abstract: Example subscription information configuration methods and a communications device are described. One example method includes receiving a first device identifier by a network device from a first terminal device in a first access mode and receiving a second device identifier from a second terminal device in a second access mode. The network device determines whether the first device identifier matches the second device identifier to identify legality of the first terminal device. If the first device identifier matches the second device identifier, it indicates that the first terminal device is a legal terminal device. The network device sends subscription information of the first terminal device to the first terminal device in the first access mode, so that the first terminal device successfully accesses a network by using the subscription information.

Abstract: This application discloses a communication method and a related apparatus. The communication method includes: A first core network element receives a first message from a second core network element, where the first message includes identification information of a first terminal and first identification information of a session, and the session indicated by the first identification information is used by a second terminal to transmit data for the first terminal; the first core network element obtains, based on the identification information of the first terminal, terminal context information corresponding to the session; and the first core network element sends a second message to the second core network element, where the second message includes the terminal context information corresponding to the session. This can directly control session permission of a terminal device, thereby improving accuracy of performing permission control on the terminal device.

Abstract: Embodiments of the present application disclose a method for accessing a local network, and a related device, so that a user equipment can simultaneously access an operator network and a local network. The method in the embodiments of the present application includes: receiving, by an MME, an access request of user equipment UE that is sent by an base station eNB, where the access request carries access information of the UE; determining, according to the access information of the UE, a first local gateway corresponding to the UE; and establishing, for the UE, a user plane bearer that is from the eNB to a gateway C-GW of a core network and that includes the first local gateway used as an intermediate node.

Abstract: A data transmission method, a terminal, and an access-network network element are disclosed. An interface is disposed on a policy client of UE and an operating system or an application layer of the UE. The interface is used to provide the operating system or the application layer with a policy related to the operating system or the application layer, and collect, from the operating system or the application layer, information required for a report. In this way, a dedicated transport channel is implemented by a bottom layer of the UE, reports and policies are transmitted on the dedicated transport channel, and during implementation, a protocol is not coupled with the application layer or the operating system, so that the system is simple to implement.

Abstract: A mobility management processing method includes: receiving, by an SMF network element, a data notification message that includes a PDU session identifier and that is sent by a UPF network element, and determining, based on the PDU session identifier, a session and SSC mode corresponding to the PDU session identifier and/or a service area of the UPF network element, where the UPF network element is a network element that establishes a PDU session corresponding to the PDU session identifier; determining a paging area based on the SSC mode and/or the service area of the UPF network element; and sending a first message including the paging area to an AMF network element, where the first message is used to trigger the AMF network element to page, in the paging area, a terminal that establishes the PDU session by using the UPF network element.

Abstract: This application provides a network handover method and an apparatus. Before a terminal device is handed over from a first network to a second network, the terminal device sets up a first tunnel to a first interworking device, where a communication identifier, of the terminal device, in the first tunnel is a first identifier the first identifier is an identifier used in the first network by the terminal device, and the first interworking device is an interface device in the first network and oriented toward a network other than the first network. After the terminal device is handed over from the first network to the second network, the terminal device sends an update request to the first interworking device, where the update request to update the communication identifier to a second identifier, and the second identifier is an identifier used in the second network by the terminal device.

Abstract: A configuration serving network element may configure information about the configuration serving network element for a fifth generation (5G) network architecture. A terminal device may obtain the information about the configuration serving network element from the 5G network architecture. The information about the configuration serving network element includes address information of the configuration serving network element. Therefore, the terminal device can establish a connection to the configuration serving network element based on the address information of the configuration serving network element, so that the configuration serving network element can automatically configure the terminal device by using the 5G network architecture.