Method and apparatus for efficient routing in communication networks

• US 8,144,593 B2
• Filed: 11/16/2007
• Issued: 03/27/2012
• Est. Priority Date: 11/17/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Wang, Jun, Dondeti, Lakshminath Reddy, Mahendran, Arungundram C., Hsu, Raymond Tah-Sheng, Narayanan, Vidya
• Primary Examiner(s): Pham, Chi
• Assistant Examiner(s): BOAKYE, ALEXANDER O
• Application Number:
  US11/941,792
• Publication Number:
  US 20080181113A1
• Time in Patent Office: 1,593 Days
• Field of Search: 370/236, 370/349, 370/389, 370/352, 370/393, 370/392, 370/390, 370/401, 370/400, 370/402, 370/403, 370/285, 709/227, 709/230, 709/238, 709/239, 709/2
• US Class Current: 370/236
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 45/22 Alternate routing
• 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

Methods and apparatus for efficient routing in communication networks. In an aspect, a method is provided for traffic routing between first and second nodes in a communication network. The method includes detecting traffic transmitted between the first and second nodes, transmitting a request to a mobility agent associated with the first node to request authorization for a route optimization between the first and second nodes, receiving a response that authorizes the route optimization, and establishing an optimized route. In an aspect, an apparatus includes detector logic for detecting traffic transmitted between the first and second nodes, transmitting logic for transmitting a request to a mobility agent associated with the first node to request authorization for a route optimization between the first and second nodes, receiving logic for receiving a response that authorizes the route optimization, and connection logic for establishing an optimized route.

Claims

1. A method for traffic routing between first and second nodes in a communication network, the method comprising:

detecting traffic transmitted between the first and second nodes;

transmitting, from a first proxy agent, a request to a mobility agent associated with the first node to request authorization for a route optimization between the first and second nodes, wherein said transmitting comprises generating the request to comprise a first identifier associated with the first node and a second identifier associated with the second node;

receiving a response that authorizes the route optimization; and

establishing an optimized route.

2. The method of claim 1, further comprising:

receiving the response that authorizes the route optimization, wherein the response identifies a second proxy agent associated with the second node; and

establishing the optimized route with the second proxy agent.

3. The method of claim 1, wherein said detecting comprises detecting one or more tunneled packets transmitted between the first and second nodes.

4. The method of claim 1, wherein said receiving comprises receiving the response from the mobility agent.

5. The method of claim 1, wherein said establishing comprises routing the traffic between the first and second nodes over the optimized route.

6. An apparatus for traffic routing between first and second nodes in a communication network, the apparatus comprising:

a processor configured with software to perform operations comprising;

detecting-traffic transmitted between the first and second nodes;

transmitting, from a first proxy agent, a request to a mobility agent associated with the first node to request authorization for a route optimization between the first and second nodes, wherein the request comprises a first identifier associated with the first node and a second identifier associated with the second node;

receiving a response that authorizes the route optimization; and

establishing an optimized route.

7. The apparatus of claim 6, wherein the processor is configured with software to perform operations such that:

receiving a response that authorizes the route optimization comprises receiving a response that identifies a second proxy agent associated with the second node, and

establishing an optimized route comprises establishing an optimized route with the second proxy agent.

8. The apparatus of claim 6, wherein the processor is configured with software to perform operations such that detecting-traffic transmitted between the first and second nodes comprises detecting one or more tunneled packets transmitted between the first and second nodes.

9. The apparatus of claim 6, wherein the processor is configured with software to perform operations such that receiving a response that authorizes the route optimization comprises receiving the response from the mobility agent.

10. The apparatus of claim 6, wherein the processor is configured with software to perform operations further comprising routing the traffic between the first and second nodes over the optimized route.

11. An apparatus for traffic routing between first and second nodes in a communication network, the apparatus comprising:

means for detecting traffic transmitted between the first and second nodes;

means for transmitting, from a first proxy agent, a request to a mobility agent associated with the first node to request authorization for a route optimization between the first and second nodes, wherein said means for transmitting comprises means for generating the request to comprise a first identifier associated with the first node and a second identifier associated with the second node;

means for receiving a response that authorizes the route optimization; and

means for establishing an optimized route.

12. The apparatus of claim 11, further comprising:

means for receiving the response that authorizes the route optimization, wherein the response identifies a second proxy agent associated with the second node; and

means for establishing the optimized route with the second proxy agent.

13. The apparatus of claim 11, wherein said means for detecting comprises means for detecting one or more tunneled packets transmitted between the first and second nodes.

14. The apparatus of claim 11, wherein said means for receiving comprises means for receiving the response from the mobility agent.

15. The apparatus of claim 11, wherein said means for establishing comprises means for routing the traffic between the first and second nodes over the optimized route.

16. A computer program product for traffic routing between first and second nodes in a communication network, the computer program product comprising:

a non-transitory machine-readable medium embodying;

a first set of codes for causing a computer to detect traffic transmitted between the first and second nodes;

a second set of codes for causing the computer to transmit, from a first proxy agent, a request to a mobility agent associated with the first node to request authorization for a route optimization between the first and second nodes, wherein said second set of codes are configured to cause the computer to generate the request to comprise a first identifier associated with the first node and a second identifier associated with the second node;

a third set of codes for causing the computer to receive a response that authorizes the route optimization; and

a fourth set of codes for causing the computer to establish an optimized route.

17. The machine-readable medium of claim 16, wherein the third set of codes are configured to cause the computer to receive the response that authorizes the route optimization, wherein the response identifies a second proxy agent associated with the second node, and the fourth set of codes are configured to cause the computer to establish the optimized route with the second proxy agent.

18. The machine-readable medium of claim 16, wherein said first set of codes are configured to cause the computer to detect one or more tunneled packets transmitted between the first and second nodes.

19. The machine-readable medium of claim 16, wherein said third set of codes are configured to cause the computer to receive the response from the mobility agent.

20. The machine-readable medium of claim 16, wherein said fourth set of codes are configured to cause the computer to route the traffic between the first and second nodes over the optimized route.

21. At least one integrated circuit configured for providing traffic routing between first and second nodes in a communication network, the at least one integrated circuit comprising:

a first module configured for causing the at least one integrated circuit to detect traffic transmitted between the first and second nodes;

a second module configured for transmitting, from a first proxy agent, a request to a mobility agent associated with the first node to request authorization for a route optimization between the first and second nodes, wherein said second module is configured for generating the request to comprise a first identifier associated with the first node and a second identifier associated with the second node;

a third module configured for receiving a response that authorizes the route optimization; and

a fourth module configured for establishing an optimized route.

22. The at least one integrated circuit of claim 21, wherein said third module is configured for receiving the response that authorizes the route optimization, wherein the response identifies a second proxy agent associated with the second node, and said fourth module is configured for establishing the optimized route with the second proxy agent.

23. The at least one integrated circuit of claim 21, wherein said first module is configured for detecting one or more tunneled packets transmitted between the first and second nodes.

24. The at least one integrated circuit of claim 21, wherein said third module is configured for receiving the response from the mobility agent.

25. The at least one integrated circuit of claim 21, wherein said fourth module is configured for routing the traffic between the first and second nodes over the optimized route.

26. A method for traffic routing between first and second nodes in a communication network, the method comprising:

receiving a request for a route optimization between the first and second nodes, wherein the request identifies a first proxy agent associated with the first node;

transmitting a response from a second proxy agent associated with the second node, wherein the response includes a first identifier associated with the first node and a second identifier associated with the second node; and

establishing an optimized route between the first proxy agent and the second proxy agent.

27. The method of claim 26, wherein said receiving comprises receiving the request from a mobility agent.

28. The method of claim 26, wherein said transmitting comprises transmitting the response to a mobility agent.

29. The method of claim 26, wherein said establishing comprises routing the traffic between the first and second nodes over the optimized route.

30. The method of claim 26, wherein the second proxy agent comprises a network routing agent.

31. An apparatus for traffic routing between first and second nodes in a communication network, the apparatus comprising:

receiving logic configured to receive a request for a route optimization between the first and second nodes, wherein the request identifies a first proxy agent associated with the first node;

transmitting logic configured to transmit a response from a second proxy agent associated with the second node, wherein the response includes a first identifier associated with the first node and a second identifier associated with the second node; and

connection logic configured to cause at least one processor to establish an optimized route between the first proxy agent and the second proxy agent.

32. The apparatus of claim 31, wherein said receiving logic is configured to receive the request from a mobility agent.

33. The apparatus of claim 31, wherein said transmitting logic is configured to transmit the response to a mobility agent.

34. The apparatus of claim 31, wherein said connection logic is configured to route the traffic between the first and second nodes over the optimized route.

35. The apparatus of claim 31, wherein the second proxy agent comprises a network routing agent.

36. An apparatus for traffic routing between first and second nodes in a communication network, the apparatus comprising:

means for receiving a request for a route optimization between the first and second nodes, wherein the request identifies a first proxy agent associated with the first node;

means for transmitting a response from a second proxy agent associated with the second node, wherein the response includes a first identifier associated with the first node and a second identifier associated with the second node; and

means for establishing an optimized route between the first proxy agent and the second proxy agent.

37. The apparatus of claim 36, wherein said means for receiving comprises means for receiving the request from a mobility agent.

38. The apparatus of claim 36, wherein said means for transmitting comprises means for transmitting the response to a mobility agent.

39. The apparatus of claim 36, wherein said means for establishing comprises means for routing the traffic between the first and second nodes over the optimized route.

40. The apparatus of claim 36, wherein the second proxy agent comprises a network routing agent.

41. A computer program product for traffic routing between first and second nodes in a communication network, the computer program product comprising:

a non-transitory machine-readable medium embodying;

a first set of codes for causing a computer to receive a request for a route optimization between the first and second nodes, wherein the request identifies a first proxy agent associated with the first node;

a second set of codes for causing the computer to transmit a response from a second proxy agent associated with the second node, wherein the response includes a first identifier associated with the first node and a second identifier with the second node; and

a third set of codes for causing the computer to establish an optimized route between the first proxy agent and the second proxy agent.

42. The machine-readable medium of claim 41, wherein said first set of codes are configured to cause the computer to receive the request from a mobility agent.

43. The machine-readable medium of claim 41, wherein said second set of codes are configured to cause the computer to transmit the response to a mobility agent.

44. The machine-readable medium of claim 41, wherein said third set of codes are configured to cause the computer to route the traffic between the first and second nodes over the optimized route.

45. The machine-readable medium of claim 41, wherein the second proxy agent comprises a network routing agent.

46. At least one integrated circuit for traffic routing between first and second nodes in a communication network, the at least one integrated circuit comprising:

a first module for causing a computer to receive a request for a route optimization between the first and second nodes, wherein the request identifies a first proxy agent associated with the first node;

a second module for causing the computer to transmit a response from a second proxy agent associated with the second node, wherein the response includes a first identifier associated with the first node and a second identifier associated with the second node; and

a third module for causing at least one processor of the computer to establish an optimized route between the first proxy agent and the second proxy agent.

47. The at least one integrated circuit of claim 46, wherein said first module is configured for receiving the request from a mobility agent.

48. The at least one integrated circuit of claim 46, wherein said second module is configured for transmitting the response to a mobility agent.

49. The at least one integrated circuit of claim 46, wherein said third module is configured for routing the traffic between the first and second nodes over the optimized route.

50. The at least one integrated circuit of claim 46, wherein the second proxy agent comprises a network routing agent.

51. A method for traffic routing between first and second nodes in a communication network, the method comprising:

receiving a request for a route optimization between the first and second nodes from a first proxy agent associated with the first node;

transmitting the request to a second proxy agent associated with the second node, wherein the second proxy agent is separate from the first proxy agent;

receiving a first response to the request from the second proxy agent; and

transmitting a second response to the first proxy agent based on the first response.

52. The method of claim 51, further comprising authorizing an optimized route between the first and second nodes through the first and second proxy agents.

53. The method of claim 51, further comprising generating the second response to be identical to the first response.

54. The method of claim 51, wherein the proxy agent associated with the second node is a network routing agent (NRA).

55. A method for traffic routing between first and second nodes in a communication network, the method comprising:

detecting traffic transmitted between the first and second nodes;

transmitting a first request to a first proxy agent associated with the first node for a route optimization between the first and second nodes;

receiving a first response from the first proxy agent in response to the first request;

transmitting a second request to a second proxy agent associated with the second node for the route optimization between the first and second nodes, wherein the second proxy agent is separate from the first proxy agent; and

receiving a second response from the second proxy agent in response to the second request.

56. The method of claim 55, further comprising authorizing an optimized route between the first and second nodes through the first and second proxy agents.

57. The method of claim 55, wherein the second proxy agent is a network routing agent (NRA).

58. The method of claim 55, wherein said transmitting the first request comprises generating the first request to comprise an identifier of the second proxy agent, and wherein said transmitting the second request comprises generating the second request to comprise an identifier of the first proxy agent.