METHOD AND SYSTEM FOR FOREIGN AGENT RELOCATION IN WIRELESS NETWORK

• US 20080084842A1
• Filed: 08/28/2007
• Published: 04/10/2008
• Est. Priority Date: 09/13/2006
• Status: Active Grant

• Current Assignee: Futurewei Technologies Incorporated (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Futurewei Technologies Incorporated (Huawei Investment & Holding Co., Ltd.)
• Inventors: XIANG, Zhixian, BARBER, Phillip
• Granted Patent: US 7,920,521 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 36/0005 Control or signalling for completing the hand-off
• 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 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 8/06 Registration at serving network Location Register, VLR or user mobility server
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]

Abstract

Method and system for foreign agent relocation in wireless network. According to an embodiment, the present invention provides a system for providing wireless access. The system includes a service network that include a database for storing information associated with providing network connection. The system also includes a first access network that is configured to provide a first wireless access in a first location. The system further includes a mobile station that is associated with the first access network, the mobile station being configured to send location update messages in an idle mode. The method also includes a second access network that is configured to provide access for the mobile station. The second access network is configured to provide a second wireless access in a second location. The system also includes a third access network that is configured to receive a first location update message from the mobile station in the idle mode.

Claims

1. A system for providing wireless access, the system comprising:

a first access network, the first access network including a database for storing information associated with providing network connection, the first network being associated with a first location;

a connection network, the connection network being configured to provide an IP connection for mobile stations;

a mobile station, the mobile station being associated with the connection network, the mobile station being configured to send location update messages in an idle mode;

a second access network, the second access network being configured to provide access for the mobile station, the second access network being configured to provide a second wireless access in a second location; and

a third access network, the second access network being configured to receive a location update message from the mobile station in the idle mode, the third access network being configured to provide a third wireless access in a third location;

wherein;

the third access network determines whether to serve the mobile station in response to the location update message;

the third access network sends a request for access information of the mobile station if the third access network determines to serve to mobile station;

the third access network sends a message indicating that the third access network is serving the mobile station.

2. The system of claim 1 wherein third access network initiates a relocation process if the third access network determines to serve to mobile station.

3. The system of claim 1 wherein the first access network terminates a network access for the mobile station based on a confirmation message.

4. The system of claim 1 wherein the third access receives access information for the mobile station.

5. The system of claim 1 wherein the first access network and the second perform resource cleanup in response to the message.

6. The system of claim 1 where third access network sends the request for access information using a location update procedure if the third access network determines to serve to mobile station.

7. The system of claim 1 wherein the third access network receives a second location update message.

8. The system of claim 1 further comprising a proxy mobile IP client.

9. The system of claim 1 wherein the connection network comprises a home agent.

10. The system of claim 1 wherein the second access network comprises a foreign agent.

11. The system of claim 1 wherein the first access network comprises a paging controller.

12. The system of claim 1 wherein the third access network comprises a relay paging controller, the relay paging controller being associated with a foreign agent.

13. The system of claim 1 wherein the access information is sent through a relay paging controller to the database.

14. A method for providing access in a communication network, the method comprising;

providing a first foreign agent, the first foreign agent being configured to provide wireless access to mobile stations, the first foreign agent being associated with a first location;

providing network access to a mobile station by the first foreign agent, the mobile station being associated with a home agent, the mobile station being in an idle state;

receiving a location update request from the mobile station by second foreign agent through an access network, the second foreign agent being associated with a second location;

determining whether to provide an IP access to the mobile station by the second foreign agent;

requesting by the second foreign agent access information for the mobile station from a database;

sending the access information from the database to the second foreign agent;

receiving the access information for the mobile station by the second foreign agent;

providing access to the mobile station by the second foreign agent;

updating the access information by the database;

sending a signal by the second foreign agent indicating that the second foreign agent is providing access to the mobile station; and

terminating the network access by the first foreign agent if the signal is received by the first foreign agent.

15. The method of claim 14 further comprising terminating the network access by a paging controller based on a confirmation signal.

16. The method of claim 14 wherein the requesting by the second foreign agent access is a part of a location update procedure.

17. The method of claim 14 wherein the requesting by the second foreign agent access is separate from a location update procedure.

18. The method of claim 14 wherein the determining whether to provide an IP access is based on a signal strength level.

19. The method of claim 14 wherein the determining whether to provide an IP access is based on a network traffic condition.

20. The method of claim 14 further comprising update a connection status at a proxy network.

21. The method of claim 14 further comprising the requesting by the second foreign agent comprises sending an request a proxy mobile IP client.

22. The method of claim 14 wherein the requesting by the second foreign agent comprises sending an request to the database.

23. The method of claim 14 wherein the requesting by the second foreign agent comprises sending an request to the home agent.

24. The method of claim 14 wherein the communication network comprises a WiMAX network.

25. The method of claim 14 wherein the first foreign agent comprises a base station.

26. The method of claim 14 wherein the access information comprises IP connectivity information.

27. The method of claim 14 further comprising providing a paging controller, the paging controller including the database.

28. The method of claim 14 wherein the service network comprises a relay paging controller that is associated with a foreign agent.

29. The system of claim 14 wherein the access information is sent through a relay paging controller to the database.

30. The method of claim 14 wherein the first location and the second location are different.

31. The method of claim 14 wherein the signal is sent to the database.

32. The method of claim 14 wherein the signal is sent to the first foreign agent.

33. The method of claim 14 wherein the home agent comprises an access service network.

34. A method for providing access in a communication network, the method comprising;

providing a first foreign agent, the first foreign agent being configured to provide wireless access to mobile stations, the first foreign agent being associated with a first location;

providing network access to a mobile station by the first foreign agent, the mobile station being associated with a home agent, the mobile station being in an idle state;

receiving a location update request from the mobile station by a second foreign agent, the second foreign agent being associated with a second location;

determining whether to provide an IP access to the mobile station by the second foreign agent;

requesting by the second foreign agent access information for the mobile station from a database;

receiving the access information for the mobile station by the second foreign agent;

providing access to the mobile station by the second foreign agent, the mobile being in the idle state;

updating the access information by the database;

sending a signal by the second foreign agent indicating that the second foreign agent is providing access to the mobile station;

terminating the network access by the first foreign agent if the signal is received by the first foreign agent; and

sending data to the mobile station through the second agent.