Abstract:
A method, system and apparatus for protecting a bootstrapping service function (BSF) entity from attack includes: a first temporary identity and a second temporary identity are generated after a BSF entity performs a mutual authentication with a user equipment (UE) by using an initial temporary identity sent from the UE; the BSF entity receives a re-authentication request carrying the first temporary identity from the UE; and the UE sends a service request carrying the second temporary identity to a network application function (NAF) entity. The present disclosure prevents attackers from intercepting the temporary identity at the Ua interface and using the temporary identity to originate a re-authentication request at the Ub interface, thus protecting the BSF entity from attack and avoiding unnecessary load on the BSF entity and saving resources.
Abstract:
Embodiments of this application disclose a communications method, apparatus, and system, and relate to the communications field, so that an access network device reserves a context of a V2X terminal, thereby ensuring that the V2X terminal implements PC5 interface communication. The method includes: A core network device obtains capability information indicating that the V2X terminal supports PC5 interface communication. The core network device maintains or skips releasing a signaling connection between the V2X terminal and the core network device based on the obtained capability information after completion of V2X terminal registration.
Abstract:
Embodiments of this application disclose a communications method, apparatus, and system. Specifically, after receiving information about a multicast area from a sender of a multicast service, a first core network device in a first network obtains, based on the information, indication information indicates that the first network cannot support the multicast service in the multicast area, or indicates that the first network supports the multicast service in a portion of areas of the multicast area; and sends the indication information to the sender. In this way, the sender of the multicast service can determine whether the first network supports the multicast service in the multicast area.
Abstract:
A communication method and an apparatus are provided. The method includes: A common application programming interface framework core function (CCF) network element first sends reference information of an application to a first network element. Therefore, the first network element determines network slice information corresponding to the application; and then the first network element sends the determined network slice information to the CCF network element. In this way, the CCF network element may determine the network slice information corresponding to the application, so that when an API invoker network element searches for an API, the CCF network element can accurately find, based on an API inquiry parameter, the API from a network slice corresponding to the network slice information.
Abstract:
The present disclosure describes a broadcast method, an apparatus, and a system. In one example, a broadcast decision apparatus obtains broadcast decision information of a plurality of terminals, where the broadcast decision information includes at least location information of the terminals. The broadcast decision apparatus selects some terminals from the plurality of terminals as relay terminals based on the broadcast decision information and a transmission range of data, and sends configuration information to the relay terminals to indicate the relay terminals to broadcast the data.
Abstract:
A communication method for transmitting multicast data by using a same multicast user plane function (UPF) includes: a first session management function (SMF) obtains forwarding configuration information or quality of service (QoS) context information of multicast data, and sends, to a second SMF, first path information for establishing a transmission path for multicast data transmission between a multicast UPF and a unicast UPF, or second path information for establishing a transmission path between the multicast UPF and an access network device.
Abstract:
Example communication methods apparatus are described. One example method includes receiving air interface link signal information of neighboring network devices by a source network device from a terminal device. The source network device determines a target network device based on sidelink information of the terminal device and the air interface link signal information of the neighboring network devices. Then, the source network device may send a handover request to the target network device, so that the terminal device can be handed over from the source network device to the target network device. Therefore, the target network device determined by the source network device can better meet an air interface link communication requirement and a sidelink communication requirement of the terminal device.
Abstract:
This application provides a method for providing a communication sensing service. In the method, a first sensing network element in a wireless communication network sends a sensing control request message to a second sensing network element, and controls the second sensing network element to detect and/or collect sensing data. After obtaining the sensing data through detection, the second sensing network element provides the sensing data to the first sensing network element, and the first sensing network element provides a sensing service based on the sensing data, to provide an end-to-end sensing service.
Abstract:
This application provides a context transfer method and a communication apparatus. The method includes: When an edge enabler client context fails to be relocated from a second edge enabler server to a first edge enabler server, a first apparatus sends first information to a first edge application server corresponding to the first edge enabler server, where the first information is used by the first edge application server to subscribe to edge enabler server capability exposure information from the first edge enabler server. In the foregoing technical solution, when an edge enabler client context fails to be transferred, the first apparatus may indicate a target edge application server to subscribe to edge enabler server capability exposure information from a target edge enabler server.
Abstract:
This disclosure provides a multicast service transmission method and apparatus, to avoid a resource waste and help save resources. The method is applied to a scenario in which a terminal device moves from a source access network device to a target access network device. The method includes: obtaining multicast capability information of the target access network device; and sending information about a multicast session to the target access network device when the multicast capability information indicates that the target access network device supports multicast, where the information about the multicast session is used for allocating a transmission resource to the multicast session, and the multicast session is used for transmitting data of a multicast service corresponding to the terminal device.