Terminal apparatus, control apparatus, gateway, and communication control method
View Patent ↗To provide a communication control means for establishing a session suitable for a terminal apparatus connecting to multiple access networks of various kinds and a network apparatus, a user data communication control means suitable for a terminal apparatus that has established sessions via multiple access networks and a network apparatus, and the like. This provides a communication control means suitable for a terminal apparatus and a network apparatus that support connection to multiple access networks of various kinds.
1. A User Equipment (UE) comprising:
transmission and reception circuitry; and
a controller,
wherein
during a first Protocol Data Unit (PDU) session establishment procedure, the transmission and reception circuitry is configured to:
transmit, over 3GPP access, a PDU Session Establishment Request message, together with information indicating that establishment of Multi-Access PDU Session is requested; and
receive, over the 3GPP access, a first PDU Session Establishment Accept message including routing rules for Multi-Access PDU Session and identification information of Multi-Access PDU Session to be established,
the controller is configured to consider that Multi-Access PDU Session is established, based on receiving the first PDU Session Establishment Accept message,
during a second PDU session establishment procedure, the transmission and reception circuitry is further configured to receive, over non-3GPP access, a second PDU Session Establishment Accept message including the identification information of the Multi-Access PDU Session,
the controller is configured to consider that a connection of the Multi-Access PDU Session has been established over non-3GPP access, based on receiving the second PDU Session Establishment Accept message, and
the connection of the Multi-Access PDU Session has been established between the UE and a core network.
2. The UE according to claim 1 , wherein the PDU Session Establishment Request message includes information indicating that the UE supports Access Traffic Switching and/or Access Traffic Splitting.
3. A communication method performed by a User Equipment (UE), the communication method comprising:
during a first Protocol Data Unit (PDU) session establishment procedure,
transmitting, over 3GPP access, a PDU Session Establishment Request message, together with information indicating that establishment of Multi-Access PDU Session is requested; and
receiving, over the 3GPP access, a first PDU Session Establishment Accept message including routing rules for Multi-Access PDU Session and identification information of Multi-Access PDU Session to be established,
wherein
the UE considers that Multi-Access PDU Session is established, based on receiving the first PDU Session Establishment Accept message,
during a second PDU session establishment procedure, the UE receives, over non-3GPP access, a second PDU Session Establishment Accept message including the identification information of the Multi-Access PDU Session,
the UE considers that a connection of the Multi-Access PDU Session has been established over non-3GPP access, based on receiving the second PDU Session Establishment Accept message, and
the connection of the Multi-Access PDU Session has been established between the UE and a core network.
4. The communication method according to claim 3 , wherein the PDU Session Establishment Request message includes information indicating that the UE supports Access Traffic Switching and/or Access Traffic Splitting.