Abstract:
The present application discloses an access method, apparatus, device, and system, and belongs to the field of communications technologies. The method includes: receiving, by a selection function entity SFE, an access request of user equipment UE sent by a radio access network node RAN node; determining a usage type of the UE based on the access request of the UE; and selecting, for the UE based on the usage type of the UE, a node that is in a dedicated core network and that can serve the UE, where the node that is in the dedicated core network and that can serve the UE corresponds to the usage type of the UE. Therefore, a node accessed by the UE is the node in the dedicated core network corresponding to the UE, and this ensures that the node can complete security verification of the UE.
Abstract:
A communication method and a communications apparatus, wherein the communication method includes: receiving, by a network repository network element, a first request message from a mobility management network element, where the first request message carries a data network name of a session that a terminal device requests to establish; determining, by the network repository network element based on the first request message, at least one target session management network element from session management network elements that support the data network name; and sending, by the network repository network element, an identifier of the at least one target session management network element to the mobility management network element, such that a session management network element can be selected to provide a service for a terminal device.
Abstract:
An IP address allocation method for D2D communication includes: sending, by a first user equipment, a first message to a second user equipment, where the first message includes a first IP address allocated by the first user equipment to the second user equipment; and receiving, by the first user equipment, a second message sent by the second user equipment, where the second message is used to indicate whether allocation of the first IP address succeeds or fails.
Abstract:
A subscription update method, device, and system, where the method is performed by a first event notification network element and includes: determining that a notification condition of a first subscription event of a first terminal is met; obtaining first callback address information of a target subscription network element; and sending a first message to the target subscription network element based on the first callback address information, where the first message carries an identifier of the first terminal and a first event notification of the first subscription event, and the identifier of the first terminal is used to correlate the first event notification with the first terminal.
Abstract:
Methods and apparatuses for acquisition of an address resolution protocol (ARP)/IPv6 Neighbour cache at a user plane function (UPF) entity without performing deep packet inspection for every packet that traverses a network. The ARP broadcast/ICMPv6 Neighbour Solicitation multicast from any Ethernet client (a user equipment (UE) or clients behind the UE or clients in a data network (DN)) is responded to by the UPF entity itself, by looking up the ARP/IPv6 Neighbour cache built in the UPF entity, irrespective of whether the UPF entity acts as the core Ethernet switch or whether the core Ethernet switch is in the DN. The solution is simplified to always intercept ARP at the UPF entity and respond to it based on a local ARP/IPv6 Neighbour cache.
Abstract:
Embodiments of the present disclosure provide an RTP packet transmission method and apparatus. A GCS AS or a BM-SC provides synchronization source information of the GCS AS and synchronization source information of the BM-SC for UE, so that the UE can continuously receive RTP packets. On one hand, the GCS AS (or the BM-SC) may provide the synchronization source information of the GCS AS (or the synchronization source information of the BM-SC) for the UE by sending an RTP packet. On the other hand, the GCS AS (or the BM-SC) further provides the synchronization source information of the BM-SC (or the synchronization source information of the GCS AS) for the UE. Therefore, when being in a unicast (multicast) transmission mode, the UE can obtain both of the synchronization source information of the GCS AS and the synchronization source information of the BM-SC.
Abstract:
The present application provides a method for accessing user context data by a network service component, an apparatus, and a system, so as to avoid incorrect access to user context data. The method includes: A user data management (UDM) service component receives a context data access request sent by a service component instance, and then sends a request for obtaining a context data access policy of a service component corresponding to the service component instance to a service registry. The service registry sends the context data access policy of the service component to the UDM service component, and the UDM service component performs a context data access operation according to the context data access request and the context data access policy.
Abstract:
A service processing method and related devices are disclosed. The method includes: receiving, by a mobility management entity (MME), an access request message from a user equipment; determining, by the MME, whether the access request message from the user equipment is an attach message or a tracking area update request message; and if the MME has been registered as a short message serving node of the user equipment in a home subscriber server (HSS) and it is determined that the access request message is the attach message or the tracking area update request message, sending, by the MME, a notification to the HSS to inform the HSS to cancel registration of the MME as the short message serving node of the user equipment.
Abstract:
Embodiments of the present invention disclose a method, a network element, and a system for determining a target RAT. The method includes: receiving, by an access network element, access control information of a UE that is sent by a mobility management network element, where the access control information includes an identity of a PLMN and a radio access technology RAT allowed and/or a RAT not allowed by the PLMN; and determining, by the access network element, a target RAT for the UE according to the access control information.
Abstract:
A service processing method and related devices are disclosed. The method includes: receiving, by a mobility management entity (MME), an access request message from a user equipment; determining, by the MME, whether the access request message from the user equipment is an attach message or a tracking area update request message; and if the MME has been registered as a short message serving node of the user equipment in a home subscriber server (HSS) and it is determined that the access request message is the attach message or the tracking area update request message, sending, by the MME, a notification to the HSS to inform the HSS to cancel registration of the MME as the short message serving node of the user equipment.