SERVER FOR CONTROL PLANE AT MOBILE COMMUNICATION NETWORK AND METHOD FOR CONTROLLING LOCAL IP ACCESS SERVICE

• US 20110045826A1
• Filed: 08/20/2010
• Published: 02/24/2011
• Est. Priority Date: 08/21/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Laeyoung, Kim, Taehyeon, Kim, Hyunsook
• Granted Patent: US 8,787,909 B2
• Time in Patent Office: Days
• US Class Current: 455/426.1
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 8/082 for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]

Abstract

Disclosed is a method of controlling a LIPA (Local IP Access) service in a server taking charge of the control plane within a mobile communication network. The method of controlling a LIPA service may include receiving an initial message from Home (e)NodeB. The initial message may include at least one of LIPA related information and capability information. The LIPA related information may include at least one of APN (Access Point Name) for LIPA and information for a local gateway, and the capability information may include an indicator indicating whether the Home (e)NodeB supports a LIPA function, and the initial message may include an access request message by a terminal. The method of controlling a LIPA service may further include determining whether the terminal can use a LIPA service at the Home (e)NodeB by considering at least one of the LIPA related information within the initial message, the capability information within the initial message, and subscriber information of the terminal, upon receiving the initial message; storing a result of the determination; generating an access accept message including an indicator indicating whether the terminal can use a LIPA service at the Home (e)NodeB; and transmitting an initial setup message including the generated access accept message to the Home (e)NodeB.

Claims

1. A method of controlling a LIPA (Local IP Access) service in a server taking charge of the control plane within a mobile communication network, the method comprising:

receiving an initial message from Home (e)NodeB, wherein the initial message comprises at least one of LIPA related information and capability information, and the LIPA related information comprises at least one of APN (Access Point Name) for LIPA and information for a local gateway, and the capability information comprises an indicator indicating whether the Home (e)NodeB supports a LIPA function, and the initial message comprises an access request message by a terminal;

determining whether the terminal uses a LIPA service at the Home (e)NodeB by considering at least one of the LIPA related information within the initial message, the capability information within the initial message, and subscriber information of the terminal, upon receiving the initial message;

storing a result of the determination;

generating an access accept message comprising an indicator indicating whether the terminal uses a LIPA service at the Home (e)NodeB; and

transmitting an initial setup message comprising the generated access accept message to the Home (e)NodeB.

2. The method of claim 1, wherein the initial message is an Initial UE message, or an UPLINK NAS TRANSPORT message based on S1-AP, and

the access request message is any one of an attach request message, a TAU (Tracking Area Update) request message, a RAU request message, and a handover request message.

3. The method of claim 1, wherein the access accept message is any one of an Attach Accept message, a TAU Accept message, and a RAU Accept message, and

the initial setup message is an S1-AP-based message, an Initial context Setup message, or a UE Context Modification message.

4. The method of claim 1, wherein the initial message further comprises CSG related information.

5. The method of claim 4, wherein the CSG related information further comprises at least one of a CSG ID and a CSG access mode parameter of the Home (e)NodeB.

6. The method of claim 1, wherein the indicator indicating whether the Home (e)NodeB supports a LIPA function is LIPA_capability_indicator, and

the indicator indicating whether the terminal can use a LIPA service at the Home (e)NodeB is LIPA_Available_indicator.

7. The method of claim 1, wherein in the determination step it is further considered whether the terminal is subscribed to a LIPA service based on the subscriber information.

8. The method of claim 1, wherein in the determination step it is further considered whether the terminal has a CSG membership to the Home (e)NodeB.

9. The method of claim 1, wherein in the storing step

the result of the determination is stored within a UE context or a MM/EPC Bearer Context.

10. The method of claim 1, wherein the access accept message further comprises APN for a LIPA service.

11. A server of taking charge of a LIPA (Local IP Access) service within a mobile communication network, the server comprising:

a receiver configured to receive an initial message comprising LIPA related information and capability information from Home (e)NodeB, wherein the LIPA related information comprises at least one of APN (Access Point Name) for LIPA and information for a local gateway, and the capability information comprises an indicator indicating whether the Home (e)NodeB supports a LIPA function, and the initial message comprises an access request message by a terminal;

a controller configured to control to determine whether the terminal uses a LIPA service at the Home (e)NodeB by considering at least one of the LIPA related information within the initial message, the capability information within the initial message, and subscriber information of the terminal, in response to the initial message, and store a result of the determination; and

a transmitter configured to encapsulate an access accept message comprising an indicator indicating whether the terminal uses a LIPA service at the Home (e)NodeB in an initial setup message to transmit to the Home (e)NodeB.

12. The server of claim 11, wherein the initial message is an Initial UE message based on S1-AP, and

the access request message is any one of an attach request message, a TAU (Tracking Area Update) request message, a RAU request message, and a handover request message.

13. The server of claim 11, wherein the initial message further comprises CSG related information, and the CSG related information further comprises at least one of a CSG ID and a CSG access mode parameter of the Home (e)NodeB.

14. The server of claim 11, wherein the access accept message is any one of an Attach Accept message, a TAU Accept message, and a RAU Accept message, and

the initial setup message is an Initial context Setup message.

15. The server of claim 11, wherein the indicator indicating whether the Home (e)NodeB supports a LIPA function is LIPA_capability_indicator, and

the indicator indicating whether the terminal can use a LIPA service at the Home (e)NodeB is LIPA_Available_indicator.

16. The server of claim 11, wherein the controller performs the determination by further considering whether the terminal a CSG membership to the Home (e)NodeB.