METHOD FOR ESTABLISHING CONNECTION BY HNB

• US 20110032871A1
• Filed: 08/28/2008
• Published: 02/10/2011
• Est. Priority Date: 09/29/2007
• Status: Active Grant

• Current Assignee: Beijing Samsung Telecom R&D Center (Samsung Electronics Co. Ltd.), Samsung Electronics Co. Ltd.
• Original Assignee: Beijing Samsung Telecom R&D Center (Samsung Electronics Co. Ltd.), Samsung Electronics Co. Ltd.
• Inventors: Sun, Chunying, Xu, Lixiang, Li, Xiaoqiang, Wang, Hong
• Granted Patent: US 8,824,365 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

A method for establishing a connection of a home Node B (HNB), the method comprising the steps of: transmitting, by the HNB, an attachment request message including an identifier of a closed subscriber group (CSG) where the HNB is located and information on location of the HNB to an operation and maintenance center (OMC); selecting, by the OMC a device establishing a connection with the HNB using the information on location of the HNB; transmitting, by the OMC, an attachment response message including information on the device to the HNB; establishing, by the HNB, a connection with the selected device. With the method proposed in the present invention, a UE can switch between HNBs in the same CSG through interface X2. Meanwhile, such information as the radio resource management and so on can be exchanged between two HNBs.

Claims

1. A method for establishing a connection of a Home Node B (HNB), the method comprising steps of:

transmitting, by the HNB, an attachment request message including an identifier of a Closed Subscriber Group (CSG) where the HNB is located and information on a location of the HNB to an Operation and Maintenance Center (OMC);

selecting, by the OMC, a device establishing a connection with the HNB using the information on the location of the HNB;

transmitting, by the OMC, an attachment response message including information on the device to the HNB;

establishing, by the HNB, a connection with the selected device.

4. The method according to claim 1, wherein the step of selecting, by the OMC, the device establishing the connection with the HNB comprises:

if the HNB is a first one to access a network in the CSG, selecting, by the OMC, a Mobile Management Entity (MME) as the device; and

transmitting, by the OMC, the attachment response message including information on the MME to the HNB.

6. The method according to claim 1, wherein the attachment response message includes information on other HNBs adjacent to the HNB, and information necessary to establish an interface X2 for switching of HNBs in the CSG.

7. The method according to claim 1, wherein the step of selecting, by the OMC, the device establishing the connection with the HNB comprises, if the HNB is a first one to access a network in the CSG, selecting, by the OMC, a Serving Gateway (S-GW) as the device.

9. The method according to claim 1, wherein the step of selecting, by the OMC, the device establishing the connection with the HNB comprises:

selecting, by the OMC, a Mobile Management Entity (MME) or a Serving Gateway (S-GW) according to one of the location of the HNB, load balancing, and a rule of reducing a possibility of changing the MME or the S-GW when an user equipment(UE) moves; and

transmitting, by the OMC, information for the selected MME or S-GW to the HNB.

12. The method according to on claim 4, further comprising:

if the HNB is not the first one to access the network in the CSG, selecting, by the OMC, a Mobile Management Entity (MME) or a Serving Gateway (S-GW) selected by the OMC for other HNBs in this CSG as the device.

21. The method according to claim 1, wherein the attachment response message includes an Internet Protocol (IP) address list of each of other HNBs in the CSG.

22. The method according to claim 1, wherein the establishing, by the HNB, of the connection with the device comprises steps of:

if information on the device indicates a Mobile Management Entity (MME), transmitting, by the HNB, a connection request message including an identifier of the HNB and an identifier of the Track Area Identifier (TAI) where the HNB is located, to the MME;

transmitting, be the MME, a connection response message to the HNB.

25. The method according to claim 22, wherein the connection request message includes information on cells which are overlapped with the HNB or CSG.

2-3. -3. (canceled)

5. (canceled)

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10-11. -11. (canceled)

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23-24. -24. (canceled)