Terminal apparatus, control apparatus, and communication control method
View Patent ↗To provide a communication control means for a handover procedure corresponding to a mobility preferable for a terminal or a communication path, and/or a control means for supporting a preferable handover procedure, and/or a communication control means for establishing a session supporting a preferable handover procedure. This provides the communication control means for providing the types of mobility preferable for the terminal and the communication path, and the handover for realizing diversified mobility.
1. A User Equipment (UE) comprising:
transmission and reception circuitry configured for: in a UE-initiated handover procedure from a first network to a second network, receiving from the first network a Packet Data Unit (PDU) session establishment accept message including first information indicating that a (PDU) session is allowed to communicate with an Evolved Packet System (EPS) bearer mapped to the second network, wherein the PDU session establishment accept message is a radio resource control (RRC) message received from a base station associated with the first network; and
a controller configured for: based on the reception of the first information, initiating the handover procedure in which a connection of the PDU session is maintained while the UE is handed over from the first network to the second network.
2. A core network device of a first network comprising:
transmission and reception circuitry configured for: in a UE-initiated handover procedure from the first network to a second network, transmitting a Packet Data Unit (PDU) session establishment accept message including first information to a User Equipment (UE) indicating that a PDU session is allowed to communicate with an Evolved Packet System (EPS) bearer mapped to the second network, wherein the PDU session establishment accept message is a radio resource control (RRC) message transmitted via a base station associated with the first network; and
a controller configured for: based on the first information, implementing the handover procedure in which a connection of the PDU session is maintained while the UE is handed over from the first network to the second network.
3. A communication control method performed by a User Equipment (UE), the communication control method comprising:
in a UE-initiated handover procedure from a first network to a second network, receiving from the first network a PDU session establishment accept message including a first information indicating that a Packet Data Unit (PDU) session is allowed to communicate with an Evolved Packet System (EPS) bearer mapped to the second network, wherein the PDU session establishment accept message is a radio resource control (RRC) message received from a base station associated with the first network; and
based on the reception of the first information, initiating the handover procedure in which a connection of the PDU session is maintained while the UE is handed over from the first network to the second network.
4. A communication control method performed by a core network device of a first network, the communication control method comprising:
in a UE-initiated handover procedure from the first network to a second network, transmitting a Packet Data Unit (PDU) session establishment accept message including first information to a User Equipment (UE) indicating that a PDU session is allowed to communicate with an Evolved Packet System (EPS) bearer mapped to the second network, wherein the PDU session establishment accept message is a radio resource control (RRC) message transmitted via a base station associated with the first network, the first information is indicating that the UE initiates a first procedure when the UE is changing a core network to be connected, and the first procedure is performed for the change of the core network to be connected; and
based on the first information, implementing the handover procedure in which a connection of the PDU session is maintained while the UE is handed over from the first network to the second network.