# US 10,484,920 B2 · Mobile terminal

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- Number: US 10,484,920 B2
- Document ID: US10484920B2
- Status: Granted
- Kind: B2
- Application number: 16/013,573
- Filed: 2018-06-20
- Published: 2018-10-18
- Granted: 2019-11-19
- Earliest claimed: 2007-09-27
- Assignees: Sun Patent Trust
- Applicants: Sun Patent Trust
- Inventors: Keigo Aso; Jun Hirano; Chan Wah Ng; Pek Yew Tan; Chun Keong Benjamin Lim; Tien Ming Benjamin Koh
- Web page: https://patentgrep.com/patent/US10484920B2

## CPC

- H04W 12/088: using filters or firewalls
- H04L 45/22: {Alternate routing}
- H04W 36/0055: {Transmission or use of information for re-establishing the radio link}
- H04W 36/362: {Conditional handover}
- H04W 92/02: Inter-networking arrangements
- H04W 36/14: Reselecting a network or an air interface
- H04W 60/005: {Multiple registrations, e.g. multihoming}
- H04W 76/20: Manipulation of established connections
- H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A technique is disclosed, according to which a mobile node, having a plurality of interfaces and performing communication according to flow information when an operator is performing communication based on the flow information as defined by a policy, can select an interface suitable for the flow and can perform communication. According to this technique, a mobile node (MN 10) having a plurality of interfaces has a list to indicate domain limited flows to be transmitted only within a specific network (a trusted network), and a list to indicate the trusted networks. When a certain interface performs handover, and in case there is a domain limited flow that uses the interface, it is decided whether the network of handover destination is a trusted network or not, and in case the network of the handover destination is not a trusted network, it is decided whether it is possible or not to transmit and receive the domain limited flow via another interface that is connected to the trusted network.

## Claims

### Claim 1

A terminal apparatus, comprising:
a plurality of interfaces including a first interface and a second interface, wherein the first interface, in operation, transmits or receives a traffic flow; and
circuitry coupled to the plurality of interfaces, wherein the circuitry, in operation:
identifies a second access network for routing the traffic flow based on flow information, the flow information including: (i) flow identification (ID) information identifying the traffic flow and (ii) network identification (ID) information identifying access networks including a source access network which is connected to the first interface and the second access network which is connected to the second interface different from the first interface; and
moves the traffic flow from the source access network to the second access network.

### Claim 2 (depends on 1)

The terminal apparatus according to claim 1, wherein the second access network is a trusted access network.

### Claim 3 (depends on 1)

The terminal apparatus according to claim 1, wherein the traffic flow is limited to being transmitted or received in the second access network only.

### Claim 4

A method performed by a terminal apparatus comprising a plurality of interfaces including a first interface and a second interface; the method comprising:
receiving or transmitting a traffic flow via the first interface;
identifying a second access network, which is connected to the second interface different from the first interface, as an access network for routing the traffic flow based on flow information including: (i) flow identification (ID) information identifying the traffic flow and (ii) network identification (ID) information identifying one or more access networks; and
moving the traffic flow from a source access network connected to the first interface to the second access network connected to the second interface.

### Claim 5 (depends on 4)

The method according to claim 4, wherein the second access network is a trusted access network.

### Claim 6 (depends on 4)

The method according to claim 4, wherein the traffic flow is limited to being transmitted or received in the second access network only.