# US 8,788,670 B2 · Method for establishing a link between the applications of an authentication card of a subscriber and an IMS network

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- Number: US 8,788,670 B2
- Document ID: US8788670B2
- Status: Granted
- Kind: B2
- Application number: 13/126,904
- Filed: 2009-10-22
- Published: 2011-10-13
- Granted: 2014-07-22
- Earliest claimed: 2008-10-31
- Assignees: Gemalto SA
- Applicants: Jacques Seif; Hervé Ganem
- Inventors: Jacques Seif; Hervé Ganem
- Web page: https://patentgrep.com/patent/US8788670B2

## CPC

- H04L 63/164: {at the network layer}
- H04L 63/0428: {wherein the data content is protected, e.g. by encrypting or encapsulating the payload}
- H04L 63/0471: {applying encryption by an intermediary, e.g. receiving clear information at the intermediary and encrypting the received information at the intermediary before forwarding}
- H04W 12/03: Protecting confidentiality, e.g. by encryption
- H04L 65/1016: IP multimedia subsystem [IMS]
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

The invention relates to a method for establishing a secured link between an authentication card of a subscriber and a telecommunication network, the card being connected to a mobile terminal, wherein the method includes the steps of establishing a secure link between the terminal and an IMS network; and sharing the resources of the secure link between the terminal and the card.

## Claims

### Claim 1

A method for establishing a secured connection between an authentication card of a subscriber to a telecommunication network and such network, with said card being connected to a mobile terminal, said method comprising:
establishing a secured IP multimedia subsystem (IMS) communication channel between said terminal and a network, enabling said terminal to utilize the IMS communication channel and operate in IMS mode; and
sharing the resources of said secured IMS channel between said terminal and said card, enabling the card to utilize the IMS communication channel to execute an application thereon concurrently with the terminal's use of the IMS communication channel to operate in IMS mode.

### Claim 2 (depends on 1)

The method according to claim 1, wherein said resource sharing is provided by a proxy server aboard said terminal.

### Claim 3 (depends on 1)

The method according to claim 1, wherein said resource sharing is provided by a system of the IP battery type serializing IP packets transmitted and received by said terminal and said card.

### Claim 4 (depends on 1)

The method according to claim 1, wherein during IMS mode, the terminal is provided multimedia services for at least one of conducting telephone calls and downloading videos.

### Claim 5 (depends on 1)

The method according to claim 1, wherein during IMS mode, the terminal is enabled to mix multimedia components.

### Claim 6 (depends on 5)

The method according to claim 5, wherein the multimedia components include at least a telephone call, chat session, video session and photograph.