METHODS AND APPARATUS FOR IMPLEMENTING PROXY MOBILE IP IN FOREIGN AGENT CARE-OF ADDRESS MODE

• US 20080159227A1
• Filed: 11/16/2007
• Published: 07/03/2008
• Est. Priority Date: 11/17/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Narayanan, Vidya, Wang, Jun, Agashe, Parag Arun, Ulupinar, Fatih, Hsu, Raymond Tah-Sheng
• Granted Patent: US 8,406,237 B2
• Time in Patent Office: Days
• US Class Current: 370/331
• 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 8/04 Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: H04W 8/085 involving hierarchical organized mobility servers, e.g. hierarchical mobile IP [HMIP]
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support

Abstract

A method for implementing proxy mobile Internet protocol (PMIP) in mobile IP foreign agent care-of-address mode may include determining a home address of an access terminal. The method may also include communicating with a home agent in order to bind an address of the network node with the home address of the access terminal and establish a tunnel between the network node and the home agent. The method may also include receiving first packets destined for the access terminal from the home agent via the tunnel and sending the first packets to the access terminal. The method may also include receiving second packets sent by the access terminal that are destined for a correspondent node and sending the second packets to the home agent via the tunnel.

Claims

1. A method for implementing proxy mobile Internet protocol (PMIP) in mobile IP foreign agent care-of-address mode, the method being performed by a network node that is a proxy for mobile IP client functionality in an access terminal, the method comprising:

determining a home address of the access terminal;

communicating with a home agent in order to bind an address of the network node with the home address of the access terminal and establish a tunnel between the network node and the home agent;

receiving first packets destined for the access terminal from the home agent via the tunnel and sending the first packets to the access terminal; and

receiving second packets sent by the access terminal that are destined for a correspondent node and sending the second packets to the home agent via the tunnel.

2. The method of claim 1, wherein determining the home address of the access terminal comprises receiving the home address of the access terminal from an authentication, authorization, and accounting component during authentication.

3. The method of claim 1, wherein determining the home address of the access terminal comprises receiving the home address of the access terminal from a home agent.

4. The method of claim 1, wherein determining the home address of the access terminal comprises snooping a registration reply message that is sent from a home agent.

5. The method of claim 1, wherein determining the home address of the access terminal comprises receiving the home address of the access terminal from the access terminal.

6. The method of claim 1, wherein the PMIP uses a specific generic routing encapsulation (GRE) tunnel.

7. The method of claim 6, wherein the GRE tunnel is used to assign an IPv4 address to the access terminal.

8. The method of claim 6, wherein the GRE tunnel is used to assign an IPv6 address to the access terminal.

9. The method of claim 6, wherein the GRE tunnel is used to assign an MIPv4 address to the access terminal.

10. The method of claim 6, wherein the GRE tunnel is used to assign an MIPv6 address to the access terminal.

11. The method of claim 1, further comprising using a generic routing encapsulation (GRE) key to differentiate access terminals with overlapping IP addresses.

12. A network node for implementing proxy mobile Internet protocol (PMIP) in mobile IP foreign agent care-of-address mode, comprising:

a processor;

memory in electronic communication with the processor;

instructions stored in the memory, the instructions being executable to;

determine a home address of the access terminal;

communicate with a home agent in order to bind an address of the network node with the home address of the access terminal and establish a tunnel between the network node and the home agent;

receive first packets destined for the access terminal from the home agent via the tunnel and sending the first packets to the access terminal; and

receive second packets sent by the access terminal that are destined for a correspondent node and sending the second packets to the home agent via the tunnel.

13. The network node of claim 12, wherein determining the home address of the access terminal comprises receiving the home address of the access terminal from an authentication, authorization, and accounting component during authentication.

14. The network node of claim 12, wherein determining the home address of the access terminal comprises receiving the home address of the access terminal from a home agent.

15. The network node of claim 12, wherein determining the home address of the access terminal comprises snooping a registration reply message that is sent from a home agent.

16. The network node of claim 12, wherein determining the home address of the access terminal comprises receiving the home address of the access terminal from the access terminal.

17. The network node of claim 12, wherein the PMIP uses a specific generic routing encapsulation (GRE) tunnel.

18. An apparatus for implementing proxy mobile Internet protocol (PMIP) in mobile IP foreign agent care-of-address mode, comprising:

means for determining a home address of the access terminal;

means for communicating with a home agent in order to bind an address of the network node with the home address of the access terminal and establish a tunnel between the network node and the home agent;

means for receiving first packets destined for the access terminal from the home agent via the tunnel and sending the first packets to the access terminal; and

means for receiving second packets sent by the access terminal that are destined for a correspondent node and sending the second packets to the home agent via the tunnel.

19. The apparatus of claim 18, wherein determining the home address of the access terminal comprises receiving the home address of the access terminal from an authentication, authorization, and accounting component during authentication.

20. The apparatus of claim 18, wherein determining the home address of the access terminal comprises receiving the home address of the access terminal from a home agent.

21. The apparatus of claim 18, wherein determining the home address of the access terminal comprises snooping a registration reply message that is sent from a home agent.

22. The apparatus of claim 18, wherein determining the home address of the access terminal comprises receiving the home address of the access terminal from the access terminal.

23. The apparatus of claim 18, wherein the PMIP uses a specific generic routing encapsulation (GRE) tunnel.

24. A computer-program product for implementing proxy mobile Internet protocol (PMIP) in mobile IP foreign agent care-of-address mode, the computer-program product comprising a computer readable medium having instructions thereon, the instructions comprising:

code for determining a home address of the access terminal;

code for communicating with a home agent in order to bind an address of the network node with the home address of the access terminal and establish a tunnel between the network node and the home agent;

code for receiving first packets destined for the access terminal from the home agent via the tunnel and sending the first packets to the access terminal; and

code for receiving second packets sent by the access terminal that are destined for a correspondent node and sending the second packets to the home agent via the tunnel.

25. The computer-program product of claim 24, wherein determining the home address of the access terminal comprises receiving the home address of the access terminal from an authentication, authorization, and accounting component during authentication.

26. The computer-program product of claim 24, wherein determining the home address of the access terminal comprises receiving the home address of the access terminal from a home agent.

27. The computer-program product of claim 24, wherein determining the home address of the access terminal comprises snooping a registration reply message that is sent from a home agent.

28. The computer-program product of claim 24, wherein determining the home address of the access terminal comprises receiving the home address of the access terminal from the access terminal

29. The computer-program product of claim 24, wherein the PMIP uses a specific generic routing encapsulation (GRE) tunnel.