Method and apparatus for supporting CSG service in wireless communication system

• US 8,989,716 B2
• Filed: 01/22/2014
• Issued: 03/24/2015
• Est. Priority Date: 02/01/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Jung, Sung Hoon, Chun, Sung Duck, Yi, Seung June, Lee, Young Dae, Park, Sung Jun
• Primary Examiner(s): NGUYEN, KHAI MINH
• Application Number:
  US14/161,321
• Publication Number:
  US 20140133463A1
• Time in Patent Office: 426 Days
• Field of Search: 455/414.1, 455/434, 455/435.1, 455/456.5, 455/550.1, 455/552.1
• US Class Current: 455/414.1
• 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 to store CSG subscription information and a processor operatively coupled to the RF unit and memory to implement a radio interface protocol. The processor accesses a base station (BS), transmits the CSG subscription information to the BS, receives an access mode from the BS where the access mode is determined based on the CSG subscription information, and negotiates with the BS with regard to a CSG service if the access mode supports a CSG to which the apparatus belongs.

Claims

1. A method of supporting a closed subscriber group (CSG) service in a wireless communication system, the method performed by a User Equipment (UE) and comprising:

receiving CSG related information from a target cell; and

transmitting the received CSG related information to a serving cell,

wherein the CSG related information includes at least a CSG identity of the target cell or a CSG membership indicator, and

wherein the CSG membership indicator indicates whether the UE is a member of the CSG of the target cell.

2. The method of claim 1, further comprising:

receiving a request from the serving cell for the CSG related information.

3. The method of claim 1, wherein the CSG related information is received via system information broadcast by the target cell.

4. The method of claim 3, wherein the serving cell configures the UE to receive the system information.

5. The method of claim 1, further comprising receiving a handover command from the serving cell, the handover command indicating a handover from the serving cell to the target cell.

6. The method of claim 5, wherein the handover command comprises a reconfiguration message.

7. The method of claim 1, further comprising receiving a physical cell identity of the target cell, wherein the physical cell identity is used to identify the target cell.

8. The method of claim 1, wherein the CSG membership indicator is not included in the CSG related information if the CSG identity of the target cell is not included in a UE CSG whitelist.

9. A user equipment for supporting a closed subscriber group (CSG) service in a wireless communication system, the user equipment (UE) comprising:

a processor configured to;

receive CSG related information from a target cell; and

transmit the CSG related information to a serving cell,

wherein the CSG related information includes at least a CSG identity of the target cell or a CSG membership indicator, and

wherein the CSG membership indicator indicates whether the UE is a member of the CSG of the target cell.

10. The user equipment of claim 9, wherein the processor is further configured to receive a request from the serving cell for the CSG related information.

11. The user equipment of claim 9, wherein the CSG related information is received via system information broadcast by the target cell.

12. The user equipment of claim 11, wherein the serving cell configures the UE to receive the system information.

13. The user equipment of claim 9, wherein the processor is further configured to receive a handover command from the serving cell, the handover command indicating a handover from the serving cell to the target cell.

14. The user equipment of claim 13, wherein the handover command comprises a reconfiguration message.

15. The user equipment of claim 9, wherein:

the processor is further configured to receive a physical cell identity of the target cell; and

the physical cell identity is used to identify the target cell.

16. The user equipment of claim 9, wherein the CSG membership indicator is not included in the CSG related information if the CSG identity of the target cell is not included in a UE CSG whitelist.