User equipment, control apparatus, and communication control method
摘要
說明書
The serving area of the UPF may be an area in which one UPF can provide a session and service continuity function, or may be a subset of the access network such as a RAT or a cell used in a case that the UE_A 10 is connected to a network. The subset of the access network may be a network constituted by one or a plurality of RATs and/or cells.
The SSC mode 3 is a mode in which a change in a user plane is revealed to the UE_A 10 while a network ensures that connectivity is not lost. In the case of the SSC mode 3, in order to implement a better connectivity service, connection via a new PDU session anchor point may be established before the previous connection is disconnected. In a case where the PDU session type associated with the PDU session is IPv4 or IPv6, an IP address may not be maintained during a session and service continuity of the transfer of a PDU session anchor.
The SSC mode 3 may be a mode of a session and service continuity that permits the establishment of a new PDU session via a new UPF and/or a communication path for the same DN before a PDU session and/or a communication path established between the UE_A 10 and the UPF is disconnected. The SSC mode 3 may be a mode of a session and service continuity that permits the UE_A 10 to be multi-homing. The SSC mode 3 may be a mode in which a session and service continuity using a plurality of PDU sessions and/or UPFs associated with the PDU sessions is permitted. In the case of the SSC mode 3, each of the apparatuses may implement the session and service continuity using a plurality of PDU sessions or may implement the session and service continuity using a plurality of UPFs.
