METHOD AND APPARATUS FOR SUPPORTING CSG SERVICE IN WIRELESS COMMUNICATION SYSTEM

• US 20100197277A1
• Filed: 02/01/2010
• Published: 08/05/2010
• Est. Priority Date: 02/01/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yi, Seungjune, Jung, SungHoon, Chun, SungDuck, Park, Sung Jun, Lee, Young Dae
• Granted Patent: US 8,682,299 B2
• Time in Patent Office: Days
• US Class Current: 455/411
• CPC Class Codes: H04W 36/0077 of access information of target access point
• CPC Class Codes: H04W 4/08 User group management
• CPC Class Codes: H04W 74/00 Wireless channel access
• CPC Class Codes: H04W 8/18 Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
• CPC Class Codes: H04W 8/186 Processing of subscriber group data
• CPC Class Codes: H04W 8/20 Transfer of user or subscriber data

Abstract

A method and apparatus for supporting a closed subscriber group (CSG) service is provided. The apparatus includes a memory configured to store CSG subscription information, and a processor operatively coupled to the RF unit and the memory and to implement a radio interface protocol. The processor is configured to access to a base station (BS), transmit the CSG subscription information to the BS, receive an access mode from the BS, wherein the access mode is determined based on the CSG subscription information, and negotiate with the BS on a CSG service if the access mode supports a CSG to which the apparatus belongs.

Claims

1. A wireless apparatus for supporting a closed subscriber group (CSG) service in a wireless communication system, the apparatus comprising:

a radio frequency (RF) unit to transmit and receive radio signals;

a memory configured to store CSG subscription information; and

a processor operatively coupled to the RF unit and the memory and to implement a radio interface protocol,

wherein the processor is configured to;

access to a base station (BS),

transmit the CSG subscription information to the BS,

receive an access mode from the BS, wherein the access mode is determined based on the CSG subscription information, and

negotiate with the BS on a CSG service if the access mode supports a CSG to which the apparatus belongs.

2. The apparatus of claim 1, wherein the processor is configured to transmit the CSG subscription information to the BS if a request for the transfer of the CSG subscription information is received from the BS.

3. The apparatus of claim 2, wherein the request for the transfer of the CSG subscription information is broadcast by the BS.

4. The apparatus of claim 2, wherein the CSG subscription information includes at least one of a CSG whitelist, a CSG ID of a target BS and CSG membership information indicating whether a user equipment (UE) is CSG member UE of the target BS.

5. The apparatus of claim 1, wherein the processor is configured to transmit the CSG subscription information to the BS if there is an update in the content of the CSG subscription information.

6. The apparatus of claim 1, wherein the access mode is one of a closed access mode, an open access mode and a hybrid mode.

7. The apparatus of claim 6, wherein the access mode is received via system information.

8. The apparatus of claim 7, wherein the system information includes a CSG indicator indicating whether a cell of the BS is a CSG cell and a CSG identity indicating an identifier of a CSG supported, and the access mode is represented by a combination of the CSG indicator and the CSG identity.

9. A method of supporting a CSG service in a wireless communication system, the method comprising:

accessing to a base station (BS) at a user equipment (UE);

transmitting CSG subscription information to the BS;

receiving an access mode from the BS, wherein the access mode is determined based on the CSG subscription information; and

negotiating with the BS on a CSG service if the access mode supports a CSG to which the UE belongs.

10. The method of claim 9, further comprising receiving a request for the transfer of the CSG subscription information from the BS.

11. The method of claim 10, wherein the request for the transfer of the CSG subscription information is broadcast by the BS.

12. The method of claim 9, wherein the access mode is one of a closed access mode, an open access mode and a hybrid mode and is received as system information.

13. The method of claim 12, wherein the system information includes a CSG indicator indicating whether a cell of the BS is a CSG cell and a CSG identity indicating an identifier of a CSG supported, and the access mode is represented by a combination of the CSG indicator and the CSG identity.

14. A base station for supporting a CSG service in a wireless communication system, the base station comprising:

a radio frequency unit to transmit and receive radio signals; and

a processor operatively coupled to the RF unit and the memory and to implement a radio interface protocol,

wherein the processor is configured to

receive CSG subscription information from each UE in a cell,

determine an access mode based on the CSG subscription information, and

transmit the access mode to each UE in the cell.

15. The base station of claim 14, wherein the processor is configured to transmit a request for the transfer of the CSG subscription information to each UE in the cell.