Method and apparatus for transferring network access information between terminals in mobile communication system

Patent metadata

Field	Value
Publication number	US-12439250-B2
Application number	US-202117999759-A
Country	US
Kind code	B2
Filing date	May 31, 2021
Priority date	May 29, 2020
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

The present disclosure relates to: a communication technique merging IoT technology with a 5G communication system for supporting a data transmission rate higher than that of a 4G system; and a system therefor. The present disclosure may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail business, security- and safety-related services, and the like) on the basis of 5G communication technologies and IoT-related technologies. The present invention proposes a method and an apparatus for enabling convenient device-to-device communication service movement by combining a user's device transfer start terminal and an operator support method even if the user starts a device transfer from any terminal when moving a profile between devices. In particular, according to one embodiment of the present invention, it is possible to provide a method comprising the steps of: receiving an input for moving a first profile installed in a first terminal; determining, in the first terminal, that a communication service provider's device transfer method is an ODSA method by checking profile metadata, a configuration server, or a terminal memory; determining, by ECS, an ECS/DP+ authentication method as a subscriber authentication method for the device transfer, and performing transmission together with ECS generation nonce and SM-DP+ address to the terminal; receiving, by the ECS, authentication result data processed by SM-DP+ from the first terminal, and verifying ECS-generated and delivered nonce included in the data and signature data of an SM-DP+ server through a GSMA Root CI certificate; and if verified, providing an activation code to the terminal and displaying a QR code on the screen of the first terminal.

First claim

The invention claimed is:

1. A method performed by a terminal in a wireless communication system, the method comprising:
transmitting, to a server, a first message including a terminal identifier and an extensible authentication protocol (EAP) identifier (ID);
receiving, from the server, a second message including an authentication token associated with an extensible authentication protocol for 3rd Generation authentication and key agreement (EAP-AKA) authentication after performing the EAP-AKA authentication with an authentication server;
transmitting, to the server, a third message requesting a subscription transfer, wherein the third message includes the terminal identifier and the authentication token; and
receiving, from the server, in response to the third message, a fourth message including an activation code.

2. The method of claim 1 , wherein the third message further includes an old terminal identifier indicating that the requesting is from an old terminal.

3. The method of claim 1 , further comprising:
informing a new terminal to download a profile by using Quick Response (OR) code scanning.

4. A method performed by a server in a wireless communication system, the method comprising:
receiving, from a terminal, a first message including a terminal identifier and an extensible authentication protocol (EAP) identifier (ID);
transmitting, to the terminal, a second message including an authentication token associated with an extensible authentication protocol for 3rd generation authentication and key agreement (EAP-AKA), authentication after performing the EAP-AKA authentication with an authentication server;
receiving, from the terminal, a third message requesting a subscription transfer, wherein the third message includes the terminal identifier and the authentication token; and
transmitting, to the terminal, in response to the third message, a fourth message including an activation code.

5. The method of claim 4 , wherein the third message further includes an old terminal identifier indicating that the requesting is from an old terminal.

6. The method of claim 4 , further comprising:
receiving, from the authentication server, an EAP challenge.

7. A terminal, comprising:
a transceiver configured to transmit and receive at least one signal; and
a controller coupled to the transceiver,
wherein the controller is configured to:
transmit, to a server, a first message including a terminal identifier and an extensible authentication protocol (EAP) identifier (ID),
receive, from the server, a second message including an authentication token associated with an extensible authentication protocol for 3rd Generation authentication and key agreement (EAP-AKA) authentication after performing the EAP-AKA authentication with an authentication server,
transmit, to the server, a third message requesting a subscription transfer, wherein the third message includes the terminal identifier and the authentication, and
receive, from the server, in response to the third message, a fourth message including an activation code.

8. The terminal of claim 7 , wherein the third message further includes an old terminal identifier indicating that the requesting is from an old terminal.

9. The terminal of claim 7 , wherein the controller further configured to inform a new terminal to download a profile by using Quick Response (OR) code scanning.

10. A server, comprising:
a transceiver configured to transmit and receive at least one signal; and
a controller coupled to the transceiver,
wherein the controller is configured to:
receive, from a terminal, a first message including a terminal identifier and an extensible authentication protocol (EAP) identifier (ID);
transmit, to the terminal, a second message including an authentication token associated with an extensible authentication protocol for 3rd generation authentication and key agreement (EAP-AKA), authentication after performing the EAP-AKA authentication with an authentication server;
receive, from the terminal, a third message requesting a subscription transfer, wherein the third message includes the terminal identifier and the authentication token; and
transmit, to the terminal, in response to the third message, a fourth message including an activation code.

11. The server of claim 10 , wherein the controller further configured to receive, from the authentication server, an EAP challenge.

12. The server of claim 10 , wherein the third message further includes an old terminal identifier indicating that the requesting is from an old terminal.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kang Sujung
• Lee Duckey
• Lee Hyewon

Classifications

• H04W12/0431

  Key distribution or pre-distribution; Key agreement · CPC title

• H04W12/42

  using virtual identity modules · CPC title

• H04W8/20

  Transfer of user or subscriber data · CPC title

• H04W12/06 Primary

  Authentication · CPC title

• H04W12/43 Primary

  using shared identity modules, e.g. SIM sharing · CPC title