# US 2019/0174387 A1 · Terminal apparatus, control apparatus, and communication control method

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- Number: US 2019/0174387 A1
- Document ID: US20190174387A1
- Status: Published application
- Kind: A1
- Application number: 16/313,720
- Filed: 2017-06-29
- Published: 2019-06-06
- Earliest claimed: 2016-06-30
- Assignees: Sharp Kabushiki Kaisha
- Applicants: Sharp Kabushiki Kaisha
- Inventors: YUDAI KAWASAKI; MASAFUMI ARAMOTO; YOKO KUGE
- Web page: https://patentgrep.com/patent/US20190174387A1

## CPC

- H04W 36/36: by user or terminal equipment
- H04W 76/16: Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
- H04W 8/22: Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W 8/24: Transfer of terminal data
- H04W 36/08: Reselecting an access point
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

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.

## Claims

### Claim at position 1

1-20. (canceled)

### Claim 21

A User Equipment (UE) comprising:
transmission and reception circuitry configured for:
in a Protocol Data Unit (PDU) session establishment procedure, receiving a PDU session establishment accept message including first information, from a first core network; and
a controller configured for:
establishing a PDU session based on the PDU session establishment procedure; and
based on the reception of the first information, initiating a first procedure when changing a core network to be connected,
wherein
the first procedure is performed for the change of the core network to be connected.

### Claim 22

A core network device comprising:
transmission and reception circuitry configured for:
in a Protocol Data Unit (PDU) session establishment procedure, transmitting a PDU session establishment accept message including first information, to a User Equipment (UE),
wherein
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.

### Claim 23

A communication control method performed by a User Equipment (UE), the communication control method comprising:
in a Protocol Data Unit (PDU) session establishment procedure, receiving a PDU session establishment accept message including first information, from a first core network;
establishing a PDU session based on the PDU session establishment procedure; and
based on the reception of the first information, initiating a first procedure when changing a core network to be connected,
wherein
the first procedure is performed for the change of the core network to be connected.

### Claim 24

A communication control method performed by a core network device, the communication control method comprising:
in a Protocol Data Unit (PDU) session establishment procedure, transmitting a PDU session establishment accept message including first information, to a User Equipment (UE),
wherein
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.