Method and apparatus for supporting CSG service in wireless communication system

• US 9,445,258 B2
• Filed: 02/19/2015
• Issued: 09/13/2016
• 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:
  US14/626,509
• Publication Number:
  US 20150163663A1
• Time in Patent Office: 572 Days
• Field of Search: 455/414.1, 455/434, 455/435.1, 455/411
• US Class Current: 1/1
• 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 a request from a source base station (BS) for CSG subscription of a target BS; and

transmitting CSG subscription information to the source BS, the CSG subscription information including a CSG identity of the target BS and a CSG membership indicator indicating whether the UE is a member of a CSG of the target BS.

2. The method of claim 1, further comprising receiving a physical cell identity of the target BS, the physical cell identity used to identify the target BS.

3. The method of claim 1, further comprising receiving a handover command indicating a handover from the source BS to the target BS.

4. The method of claim 3, wherein the handover command comprises a reconfiguration message.

5. The method of claim 1, wherein the CSG membership indicator is not included in the CSG subscription information if the CSG identity is not included in a UE CSG whitelist.

6. The method of claim 1, wherein the CSG identity of the target BS is received from the target BS via system information.

7. The method of claim 1, wherein the CSG identify of the target BS is pre-stored within the UE.

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

a memory configured to store a UE CSG whitelist; and

a processor operatively coupled to the memory and configured to;

receive a request from a source BS for CSG subscription of a target BS; and

transmit CSG subscription information to the source BS, the CSG subscription information including a CSG identity of the target BS and a CSG membership indicator indicating whether the UE is a member of a CSG of the target BS.

9. The UE of claim 8, wherein the processor is further configured to receive a physical cell identity of the target BS, the physical cell identity used to identify the target BS.

10. The UE of claim 8, wherein the processor is further configured to receive a handover command indicating a handover from the source BS to the target BS.

11. The UE of claim 10, wherein the handover command comprises a reconfiguration message.

12. The UE of claim 8, wherein the CSG membership indicator is not included in the CSG subscription information if the CSG identity is not included in a UE CSG whitelist.

13. The UE of claim 8, wherein the CSG identity of the target BS is received from the target BS via system information.

14. The UE of claim 8, wherein the CSG identify of the target BS is pre-stored within the UE.