# US 11,310,857 B2 · Terminal apparatus, control apparatus, gateway, and communication control method

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- Number: US 11,310,857 B2
- Document ID: US11310857B2
- Status: Granted
- Kind: B2
- Application number: 16/895,645
- Filed: 2020-06-08
- Published: 2020-10-01
- Granted: 2022-04-19
- Earliest claimed: 2016-07-04
- Assignees: Sharp Kabushiki Kaisha; FG Innovation Company Limited
- Applicants: Sharp Kabushiki Kaisha; Fg Innovation Company Limited
- Inventors: Yudai Kawasaki; Masafumi Aramoto
- Web page: https://patentgrep.com/patent/US11310857B2

## CPC

- H04W 4/00: Services specially adapted for wireless communication networks; Facilities therefor
- H04W 76/15: Setup of multiple wireless link connections
- H04W 76/16: Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
- H04W 28/0831: {Core entity}
- H04W 76/11: Allocation or use of connection identifiers
- H04W 48/17: {Selecting a data network PoA [Point of Attachment]}
- H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals
- H04W 88/16: Gateway arrangements
- 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 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.

## Claims

### Claim 1

A User Equipment (UE) comprising:
transmission and reception circuitry; and
a controller,
wherein:
the transmission and reception circuitry is configured to:
transmit, to a core network, over 3GPP access, a Protocol Data Unit (PDU) Session Establishment Request message; and
receive, from the core network, over the 3GPP access, a PDU Session Establishment Accept message, as a response to the PDU Session Establishment Request message, the PDU Session Establishment Accept message including routing rules for a Multi-Access PDU Session and identification information for establishing the Multi-Access PDU Session;
the controller is configured to recognize that the Multi-Access PDU Session is established, based on receiving the PDU Session Establishment Accept message;
a first communication path over the 3GPP access is established;
the transmission and reception circuitry is further configured to receive, over non-3GPP access, a control message including the identification information; and
a second communication path over the non-3GPP access is established.

### Claim 2 (depends on 1)

The UE according to claim 1, wherein the PDU Session Establishment Request message further includes information indicating that the UE supports Access Traffic Switching and Access Traffic Splitting.

### Claim 3 (depends on 1)

The UE according to claim 1, wherein the PDU Session Establishment Request message further includes information indicating that the UE supports Access Traffic Splitting.

### Claim 4 (depends on 1)

The UE according to claim 1, wherein the PDU Session Establishment Request message further includes information indicating that the UE supports Access Traffic Switching.

### Claim 5

A communication method performed by a User Equipment (UE), the communication method comprising:
transmitting, a to a core network, over 3GPP access, a Protocol Data Unit (PDU) Session Establishment Request message;
receiving, from the core network, over the 3GPP access, a PDU Session Establishment Accept message, as a response to the PDU Session Establishment Request message, the PDU Session Establishment Accept message including routing rules for a Multi-Access PDU Session and identification information for establishing the Multi-Access PDU Session; and
recognizing that the Multi-Access PDU Session is established, based on receiving the PDU Session Establishment Accept message;
establishing a first communication path over the 3GPP access;
receiving, over non-3GPP access, a control message including the identification information; and
establishing a second communication path over the non-3GPP access.

### Claim 6 (depends on 5)

The communication method according to claim 5, wherein the PDU Session Establishment Request message further includes information indicating that the UE supports Access Traffic Switching and Access Traffic Splitting.

### Claim 7 (depends on 5)

The communication method according to claim 5, wherein the PDU Session Establishment Request message further includes information indicating that the UE supports Access Traffic Splitting.

### Claim 8 (depends on 5)

The communication method according to claim 5, wherein the PDU Session Establishment Request message further includes information indicating that the UE supports Access Traffic Switching.