Multimedia communication using co-located care of address for bearer traffic

• US 20050265278A1
• Filed: 04/12/2005
• Published: 12/01/2005
• Est. Priority Date: 04/13/2004
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Mahendran, Arungundram C., Hsu, Raymond Tah-Sheng
• Granted Patent: US 7,924,771 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04L 12/64 Hybrid switching systems
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]
• CPC Class Codes: H04W 80/10 adapted for application session management, e.g. SIP [Session Initiation Protocol] connection management H04W76/00; arrangements for session management H04L67/14
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

In a wireless communications system in which a mobile node seeks a communication session with a correspondent node by first signaling for initialization of the communication session through a first data path via an intermediate node. Thereafter, contents of the communication is established through a second data path in which the mobile node and the correspondent node communicate straightforwardly without going through the intermediate node.

Claims

1. A method in a wireless communication system, comprising:

acquiring first and second addresses;

signaling for initialization of a communication session with said first address; and

transmitting contents of said communication session with said second address.

2. The method of claim 1 further including signaling for initialization of said communication session via a first communication path, and transmitting said contents of said communication session via a second communication path.

3. The method of claim 1 further including providing a home address as said first address and providing a co-located care-of address as said second address.

4. The method of claim 3 wherein said transmitting said contents includes transmitting said contents in a first network, said method further including updating said co-located care of address during said transmitting said contents in a second network.

5. A method of communicating with a correspondent node in a communication system supported by IP (Internet Protocol), comprising:

(a) signaling for initialization of a communication session through a first communication path by sending an invite message to said correspondent node via a proxy entity; and

(b) transmitting contents of said communication session straightforwardly to said correspondent node through a second communication path.

6. The method of claim 5 further including acquiring first and second addresses prior to step (a), and wherein step (a) further including signaling for initialization of said communication session using said first address and step (b) further including transmitting said contents of said communication session using said second address.

7. The method of claim 6 wherein step (b) further including transmitting said contents in a first network, said method further including (c) updating said second address during said transmitting said contents in a second network.

8. The method of claim 7 wherein step (a) further including signaling for initiation of said communication session under mobile IP and step (b) further including transmitting contents of said communication session under simple IP.

9. An apparatus in a wireless communication system, comprising:

means for acquiring first and second addresses;

means for signaling for a communication session using said first address; and

means for transmitting contents of said communication session using said second address.

10. The apparatus of claim 9 further including means for signaling for initialization of said communication session via a first communication path, and means for transmitting said contents of said communication session via a second communication path.

11. The apparatus of claim 9 further including means for providing a home address as said first address and means for providing a co-located care-of address as said second address.

12. The apparatus of claim 11 further including means for updating said co-located care of address when said apparatus moves from one network to another network in said wireless communication system.

13. An apparatus in a wireless communication system supported by the IP (Internet Protocol), comprising:

means for sending an invite message for initialization of a communication session to a correspondent node via a proxy entity through a first communication path; and

means for transmitting contents of said communication session straightforwardly to said correspondent node through a second communication path.

14. The apparatus of claim 13 further including means for acquiring first and second addresses, such that said apparatus uses said first address for sending said invite message through said first communication path and uses said second address for transmitting said contents of said communication session through said second communication path.

15. The apparatus of claim 14 further including means for updating said second address when said apparatus moves from one network to another network in said wireless communication system.

16. An apparatus in a communication system, comprising:

a memory circuit having computer-readable instructions for acquiring first and second addresses, signaling for initialization of a communication session with said first address, and transmitting contents of said communication session with said second address; and

a processor circuit coupled to said memory circuit for processing said computer-readable instructions.

17. The apparatus of claim 16 wherein said memory circuit further including computer-readable instructions for signaling for initialization of said communication session via a first communication path, and transmitting said contents of said communication session via a second communication path.

18. The apparatus of claim 17 further including a home address as said first address and a co-located care-of address as said second address.

19. The apparatus of claim 18 wherein said memory circuit further including computer-readable instructions for updating said co-located care of address when said apparatus moves from a first network to a second network in said communication system.

20. An apparatus for communication with a correspondent node in a wireless communication system supported by the IP (Internet Protocol), comprising:

a memory circuit having computer-readable instructions for signaling for initialization of a communication session through a first communication path by sending an invite message to said correspondent node via a proxy entity, and transmitting contents of said communication session straightforwardly to said correspondent node through a second communication path; and

a processor circuit coupled to said memory circuit for processing said computer-readable instructions.

21. The apparatus of claim 20 wherein said memory circuit further including computer-readable instructions for acquiring first and second addresses, and using said first and second addresses respectively in conjunction with said first and second communication paths.

22. The apparatus of claim 21 wherein said memory circuit further including computer-readable instructions for updating said second address when said apparatus moves from one network to another network in said wireless communication system.

23. The apparatus of claim 21 wherein said first and second addresses respectively include a HoA (Home Address) and a CCoA (Co-located Care-Of Address).

24. The apparatus of claim 23 wherein said computer-readable instructions further including sending said invite message under mobile IP and transmitting contents of said communication session under simple IP.

25. Electrical signals transmitted via a carrier wave in a wireless communication system between first and second nodes, said electrical signals comprising computer-readable instructions for:

acquiring first and second address;

signaling for initialization of a communication session through a first communication path using said first address; and

transmitting contents of said communication session through a second communication path using said second address.

26. The electrical signals of claim 25 further comprising computer-readable instructions for updating said second address when one of said first and second nodes moves from one network to another network in said wireless communication system.