General access network controller bypass to facilitate use of standard cellular handsets with a general access network

• US 8,300,605 B2
• Filed: 03/22/2011
• Issued: 10/30/2012
• Est. Priority Date: 02/11/2006
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Tariq, Ahmed, Hoole, Elliott, Sukumaran, Jayesh, Zhang, Yan
• Primary Examiner(s): Pérez-Gutiérrez, Rafael
• Assistant Examiner(s): Kasraian, Allahyar
• Application Number:
  US13/053,889
• Publication Number:
  US 20110171956A1
• Time in Patent Office: 588 Days
• Field of Search: 370/331, 455/436, 455/552.1
• US Class Current: 370/331
• CPC Class Codes: H04W 12/08 Access security
• CPC Class Codes: H04W 12/72 Subscriber identity
• CPC Class Codes: H04W 36/0011 for data sessions of end-to-end connection
• CPC Class Codes: H04W 36/0019 adapted for mobile IP [MIP]
• CPC Class Codes: H04W 36/06 Reselecting a communication resource in the serving access point
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 8/06 Registration at serving network Location Register, VLR or user mobility server

Abstract

Enabling a standard cellular handset to be used to access a core mobile network via a generic access network is disclosed. A communication between a generic access network element and the core mobile network is intercepted. A modified version of the communication is generated. The modified communication is forwarded.

Claims

1. A mobile network element, comprising:

a communication interface; and

a processor operatively coupled to the communication interface and configured to intercept a communication between a generic access network (GAN) element and a core mobile network, to generate a modified version of the communication, and to forward the modified version of the communication via the communication interface,

wherein the mobile network element comprises a GAN adjunct (GCA), wherein a GAN controller (GANC) is communicatively disposed between an aggregation gateway (AGW) and the GCA, and

wherein the GCA and the AGW have a bypass connection that bypasses the GANC, and

wherein the bypass connection carries handover requests that are forwarded to the processor.

2. The mobile network element according to claim 1, wherein the network element is in communication with a cellular handset that is not configured to directly communicate with the GAN using an interface of the GAN.

3. The mobile network element according to claim 2, wherein the cellular handset is configured to enable a standard cellular air interface to interoperate with an “

Up”

interface.

4. The mobile network element according to claim 1, wherein multiple cellular handsets use one security tunnel in communicating with the AGW.

5. The mobile network element according to claim 4, wherein the AGW uses separate security tunnels corresponding to each of the multiple standard cellular handsets in communicating with the GANC.

6. The mobile network element according to claim 1, wherein the modified version of the communication comprises a modified data element comprising the communication.

7. The mobile network element according to claim 6, wherein the data element is modified based, at least in part, on a second communication received via an interface that bypasses the generic access network element.

8. The mobile network element according to claim 1, wherein the communication is from the generic access network element and is forwarded to the core mobile network.

9. The mobile network element according to claim 1, wherein the communication comprises a handover request acknowledge message from the generic access network element.

10. The mobile network element according to claim 1, wherein the modified version of the communication comprises a modified handover request acknowledge message.

11. The mobile network element according to claim 1, wherein the communication comprises a handover request acknowledge message.

12. The mobile network element according to claim 1, wherein the communication interface comprises an interface to a mobile switching center.

13. The mobile network element according to claim 12, wherein, at the mobile switching center, the interface to the mobile switching center is associated with the generic access network element.

14. The mobile network element according to claim 1, wherein the GAN element comprises the GANC and the mobile network element is located in a communication path between the GANC and the core mobile network.

15. A cellular communications system, comprising:

an aggregation gateway (AGW);

a generic access network controller (GANC) operatively coupled to the AGW; and

a GAN adjunct (GCA) operatively coupled to the GANC, wherein the GCA is configured to intercept a communication between a GAN element and a core mobile network, to generate a modified version of the communication, and to forward the modified version of the communication via a communication interface,

wherein the GANC is communicatively disposed between the AGW and the GCA,

wherein the GCA and the AGW have a bypass connection that bypasses the GANC, and

wherein the bypass connection carries handover requests.

16. A method for enabling a mobile station to be used to access a core mobile network via a generic access network, comprising:

receiving an indication that a handover into a service area associated with the generic access network is to be performed;

providing to a node on the mobile station side of a Generic Access Network (GAN) element located in a call data path between the mobile station and the core mobile network, via an interface that bypasses the GAN element, an attribute of the mobile station, the node being configured to use the attribute to establish, on behalf of the mobile station, a secure connection to the generic access network element, wherein the attribute is provided, at least in part, by intercepting and forwarding to the node, via the bypass interface, a handover request message sent by the core mobile network to the generic access network element.

17. The method according to claim 16, comprising:

communicatively disposing the GAN element between an aggregation gateway (AGW) and a mobile network element.

18. The method according to claim 16, comprising:

using, by multiple mobile stations, one security tunnel in communicating with the AGW.

19. The method according to claim 18, comprising:

using, by the AGW, separate security tunnels corresponding to each of the multiple mobile stations in communicating with the GANC.

20. The method according to claim 16, wherein the attribute comprises one or more of the following:

an identifier associated with the mobile station, a network asset identifier (NAI) associated with the mobile station, and an international mobile subscriber identity (IMSI) associated with the mobile station.