Method and system for packet data transmission

• US 20020186696A1
• Filed: 06/11/2002
• Published: 12/12/2002
• Est. Priority Date: 06/12/2001
• Status: Active Grant

• Current Assignee: LG-Ericsson Company Limited (Telefonaktiebolaget LM Ericsson)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lim, Byung Keun
• Granted Patent: US 7,333,452 B2
• Time in Patent Office: Days
• US Class Current: 370/395.52
• CPC Class Codes: H04L 61/4511 using domain name system [DNS]
• CPC Class Codes: H04L 61/4535 using an address exchange platform which sets up a session between two nodes, e.g. rendezvous servers, session initiation protocols [SIP] registrars or H.323 gatekeepers
• CPC Class Codes: H04L 61/5053 Lease time; Renewal aspects
• CPC Class Codes: H04L 61/5076 Update or notification mechanisms, e.g. DynDNS
• CPC Class Codes: H04L 67/55 Push-based network services
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 60/06 De-registration or detaching
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 76/32 Release of transport tunnels
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]
• CPC Class Codes: H04W 88/005 Data network PoA devices

Abstract

A system and method for transmitting packet data in a communications system assigns an IP address to a terminal based on a network access identifier corresponding to the terminal, and then sends packet data to the terminal using the IP address. The terminal may be a simple IP user terminal or a mobile IP user terminal, and the packet data being sent preferably corresponds to an IP push service. In order to send the packet data, a protocol link is established between the terminal and network. Transmission of packet data on this link may be managed using an information table which relates information corresponding to the IP address to the network access identifier. This table is updated with information relating to the IP address when, for example, the network access identifier changes, when a point-to-point protocol timer expires, when an IP registration expires a location of the terminal changes. Upon expiration of any of the aforementioned time periods, the link between the terminal and network may be eliminated, thereby freeing the IP address for use by other terminals in the system.

Claims

1. A method for transmitting packet data in a communications system, comprising:

assigning an IP address to the terminal based on a network access identifier corresponding to the terminal; and

sending data to the terminal using said IP address.

2. The method of claim 1, further comprising:

establishing a point-to-point protocol link between the terminal and a network associated with said network access identifier.

3. The method of claim 1, wherein said assigning step includes assigning an IP address to a simple IP user of the terminal.

4. The method of claim 1, wherein said assigning step includes assigning an IP address to a mobile IP user of the terminal.

5. The method of claim 1, further comprising:

updating information relating to the IP address when said network access identifier for the terminal changes.

6. The method of claim 1, further comprising:

providing an information table which includes information relating the IP address to said network access identifier.

7. The method of claim 6, further comprising:

updating information relating to the IP address in said table when said network access identifier for the terminal changes.

8. The method of claim 7, wherein said updating step is performed when a point-to-point protocol timer expires.

9. The method of claim 7, wherein said updating step is performed when an IP registration expires.

10. The method of claim 7, wherein said updating step is performed based on changes in a location of the terminal.

11. The method of claim 1, further comprising:

receiving a request from an IP service provider for the IP address of the terminal; and

sending data from the IP service provider to the terminal using the IP address.

12. The method of claim 11, wherein the request from the IP service provider is made regardless of whether the terminal requested service from the IP service provider.

14. The system of claim 13, wherein the packet data processor is connected to the terminal by a point-to-point protocol link.

15. The system of claim 13, wherein the IP address assigned to the terminal is a simple IP address assigned in accordance with a packet service request from the terminal.

16. The system of claim 13, further comprising:

a home agent which allots the IP address to the terminal in accordance with an IP registration request from the terminal.

17. The system of claim 13, wherein one of a simple IP address and a mobile IP address is assigned to the terminal.

19. The system of claim 13, wherein the domain name processor updates the IP address assigned to the terminal in accordance with changes in said network access identifier.

20. The system of claim 13, wherein the domain name processor updates the IP address assigned to the terminal when a location of the terminal changes.

21. The system of claim 13, wherein the domain name processor updates the IP address of the terminal in accordance with an allotment/count of the IP address.

22. The system of claim 13, wherein the domain name processor updates the IP address of the terminal when a point-to-point protocol time expires.

23. The system of claim 13, wherein the domain name processor updates the IP address of the terminal when an IP registration time expires.

24. The system of claim 20, wherein the domain name system includes:

a processor which sends a request from an IP service provider requesting the IP address of the terminal, said packet service providing server sending said request regardless of whether the terminal requested service from the IP service provider.

26. The method of claim 25, wherein said network service is an internet network service and said network address is an IP address.

27. The method of claim 26, wherein said IP address includes a domain name generated based on the network access identifier.

28. The method of claim 26, wherein the internet network service is an IP push service.

29. The method of claim 26, wherein the terminal is a simple IP user terminal.

30. The method of claim 26, wherein the terminal is a mobile IP user terminal.

31. The method of claim 25, further comprising:

updating information relating to the network address to reflect changes in the network access identifier assigned to the terminal.

32. The method of claim 25, further comprising:

updating information relating to the network address to reflect movement of the terminal from one area to another.

33. The method of claim 25, wherein the network access identifier is an identifier relating to at least one of an accounting information, an authentication information, and authorization information.

34. The method of claim 25, wherein said accounting information is wireless link record information.

35. The method of claim 25, further comprising:

generating a point-to-point link with the terminal,

wherein said point-to-point link carries network service information to the terminal.

36. The method of claim 29, further comprising:

cancelling a link with the terminal if no data exchange takes place with the terminal upon expiration of a predetermined timer period.

37. The method of claim 29, further comprising:

cancelling a link with the terminal upon expiration of a registration time life.

39. The system of claim 38, wherein said network service is an internet network service and said network address is an IP address.

40. The system of claim 39, wherein said IP address includes a domain name generated based on the network access identifier.

41. The system of claim 39, wherein the internet network service is an IP push service.

42. The system of claim 39, wherein the terminal is a simple IP user terminal.

43. The system of claim 39, wherein the terminal is a mobile IP user terminal.

44. The method of claim 38, wherein said second processor updates information relating to the network address to reflect changes in the network access identifier assigned to the terminal.

45. The system of claim 38, wherein said second processor updates information relating to the network address to reflect movement of the terminal from one area to another.

46. The system of claim 38, wherein the network access identifier is an identifier relating to at least one of an accounting information, an authentication information, and authorization information.

47. The system of claim 38, wherein said accounting information is wireless link record information.

48. The system of claim 38, further comprising:

means for generating a point-to-point link with the terminal,

wherein said point-to-point link carries network service information to the terminal.

49. The system of claim 42, further comprising:

means for cancelling a link with the terminal if no data exchange takes place with the terminal upon expiration of a predetermined timer period.

50. The system of claim 42, further comprising:

means for cancelling a link with the terminal upon expiration of a registration time life.

13. A system for transmitting packet data, comprising:

a packet data processor which assigns a network access identifier to a terminal; and

a domain name processor which generates an IP address for the terminal based on said network access identifier.

18. The system of clam 13, wherein in the domain name processor stores information in a table relating said network access identifier to the IP address assigned to the terminal.

25. A method for providing information in a communications system, comprising:

assigning a network access identifier to a terminal requesting network service; and

generating a network address for the terminal based on the network access identifier.

38. A system for providing information in a communications system, comprising:

a first processor which assigns a network access identifier to the terminal requesting network service; and

a second processor which generates a network address for the terminal based on the network access identifier.

51. An apparatus, comprising:

a storage unit which stores information relating an IP address for a mobile terminal to a network access identifier assigned to said mobile terminal.

52. The apparatus of claim 51, further comprising:

a processor for updating information relating to the IP address.

53. The apparatus of claim 52, wherein the processor updates said information relating to the IP address when said network access identifier changes.

54. The apparatus of claim 52, wherein the processor updates said information relating to the IP address when a location of the terminal changes.

55. The apparatus of claim 52, wherein the processor updates said information relating to the IP address in accordance with an allotment/count of the IP address.

56. The apparatus of claim 52, wherein the processor updates said information relating to the IP address when a predetermined time period expires.

57. The apparatus of claim 52, wherein the processor updates said information relating to the IP address when an IP registration time expires.