Sequence delivery of messages

• US 6,414,950 B1
• Filed: 08/24/1998
• Issued: 07/02/2002
• Est. Priority Date: 10/14/1997
• Status: Expired due to Term

• Current Assignee: WSOU Investments, LLC (WSOU Holdings, LLC)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Rai, Girish, Chuah, Mooi, Parsons, Philip M.
• Primary Examiner(s): MARCELO, MELVIN C
• Application Number:
  US09/138,680
• Time in Patent Office: 1,408 Days
• Field of Search: 370/338, 370/352-356
• US Class Current: 370/338
• CPC Class Codes: H04L 12/4633 Interconnection of networks using encapsulation techniques, e.g. tunneling
• CPC Class Codes: H04L 2212/00 Encapsulation of packets
• CPC Class Codes: H04L 47/16 in connection oriented networks, e.g. frame relay
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/166 IP fragmentation; TCP segmentation
• CPC Class Codes: H04L 69/168 specially adapted for link layer protocols, e.g. asynchronous transfer mode [ATM], synchronous optical network [SONET] or point-to-point protocol [PPP]
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 36/0011 for data sessions of end-to-end connection
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 4/24 Accounting or billing
• CPC Class Codes: H04W 8/12 between location registers or mobility servers
• CPC Class Codes: H04W 80/02 Data link layer protocols
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]

Abstract

A coupled data network which ensures in sequence delivery of messages is disclosed. The copuled data network includes a foreign network and a home network. The foreign network includes a foreign mobile switching center and a base station, the base station including an access hub with a serving inter-working function. The home network includes a home mobile switching center, the home mobile switching center including a home inter-working function. A roaming end system is a subscriber to the home network and operates within the foreign network, a message being transportable between the roaming end system and the home inter-working function through the serving inter-working function using a protocol that ensures in sequence delivery of data packets.

Claims

1. A coupled data network comprising:

a foreign network that includes a foreign mobile switching center and a base station, the base station including an access hub with a serving inter-working functions;

a home network that includes a home mobile switching center, the home mobile switching center including plural home inter-working functions, one of which collects accounting data for billing purposes; and

a roaming end system subscribed to the home network and operating within the foreign network, a message being transportable between the roaming end system and the home inter-working functions through the serving inter-working functions using a protocol that ensures in sequence delivery of data packets.

2. The network of claim 1, wherein

the foreign mobile switching center includes a serving registration server, and the access hub including a proxy registration agent,

the home mobile switching center includes a home registration server, and

the roaming end system including an end registration agent, the end registration agent being coupled to the proxy registration agent, the proxy registration agent being coupled to the serving registration server, the serving registration server being coupled to the home registration server.

3. The network of claim 2, wherein the home registration server includes a module to authenticate that the foreign network is authorized to host the roaming end system.

4. The network of claim 2, wherein the home registration server includes a module to authenticate that the roaming end system is authorized to receive services of the home network.

5. The network of claim 2, wherein the serving registration server includes a module to authenticate that the roaming end system is a subscriber of the home network.

6. The network of claim 2, wherein:

the home registration server includes a module to authenticate that the foreign network is authorized to host the roaming end system;

the home registration server includes a module to authenticate that the roaming end system is authorized to receive services of the home network; and

the serving registration server includes a module to authenticate that the roaming end system is a subscriber of the home network.

7. The network of claim 1, wherein

the foreign mobile switching center includes a serving registration server,

the home mobile switching center includes a plurality of unassigned home inter-working functions;

and

the roaming end system including an end registration agent to form a registration request, the end registration agent sending the registration request through the serving registration server to the home registration server, the home registration server including a module to select an active home inter-working function from the plurality of unassigned home inter-working functions based on the registration request.

8. The network of claim 7, wherein:

the serving inter-working function is regarded as an active serving inter-working function;

the foreign network further includes a plurality of serving inter-working functions; and

the serving registration server includes a module to select the active serving inter-working function from the plurality of serving inter-working functions based on the registration request.

9. The network of claim 7, wherein the home registration server includes a module to authenticate that the foreign network is authorized to host the roaming end system.

10. The network of claim 7, wherein the home registration server includes a module to authenticate that the roaming end system is authorized to receive services of the home network.

11. The network of claim 7, wherein the serving registration server includes a module to authenticate that the roaming end system is a subscriber of the home network.

12. The network of claim 7, wherein:

the registration request includes service type information; and

the home registration server includes a module to control the selection of the active home inter-working function based on the service type information.

13. The network of claim 12, wherein the service type information specifies a request for one of public internet service and private intranet service.

14. The network of claim 12, wherein the service type information specifies a request for one of mobile service and fixed service.

15. The network of claim 7, wherein:

the registration request includes quality of service information; and

the home registration server includes a module to control the selection of the active home inter-working function based on the quality of service information.

16. The network of claim 15, wherein the quality of service information specifies a request for one of constant bit rate service, real time variable bit rate service, non-real time variable bit rate service, unspecified bit rate service and available bit rate service.

17. The network of claim 1, further comprising:

a second end system subscribed to the home network and operating as a fixed end system within the home network; and

a home base station that includes a home access hub with a second home inter-working function, a second message being transportable between the second end system and a second communications server through the second home inter-working function.

18. The network of claim 1, further comprising:

a second end system subscribed to the home network and operating as a mobile end system within the home network;

a home mobile switching center having a second home inter-working function, the first home inter-working function being included in the home mobile switching center; and

a home base station that includes a home access hub with a second serving inter-working function, a second message being transportable between the second end system and a second communications server through the second serving inter-working function and through the second home inter-working function.

19. The network of claim 1, wherein the first home inter-working function includes a home accounting collection module to collect accounting data on message traffic transported through the first home inter-working function.

20. The network of claim 1, wherein:

the home network further includes a home mobile switching center that includes a home accounting server; and

the home accounting collection module includes a sub-module to periodically send accounting reports to a home accounting server.

21. The network of claim 20, wherein:

the home network further includes a home billing processor; and

the home accounting server includes a module to send accounting reports to the home billing processor, the home billing processor including a module to prepare customer bills based on the accounting reports from the home accounting server.

22. The network of claim 21, wherein:

the foreign network further includes a foreign accounting server and a foreign billing processor;

the first serving inter-working function includes a foreign accounting collection module to collect accounting data on message traffic transported through the first serving inter-working function, the foreign accounting collection module including a sub-module to periodically send accounting reports to the foreign accounting server, the foreign accounting server including a module to send accounting reports to the foreign billing processor, the foreign billing processor including a module to send accounting reports to the home billing processor, the home billing processor including a module to prepare customer bills based on the accounting reports from the foreign billing processor.

23. The network of claim 1, wherein:

the home network further includes a home billing processor;

the foreign network further includes a foreign accounting server and a foreign billing processor;

the first serving inter-working function includes a foreign accounting collection module to collect accounting data on message traffic transported through the first serving inter-working function, the foreign accounting collection module including a sub-module to periodically send accounting reports to the foreign accounting server, the foreign accounting server including a module to send accounting reports to the foreign billing processor, the foreign billing processor including a module to send accounting reports to the home billing processor, the home billing processor including a module to prepare customer bills based on the accounting reports from the foreign billing processor.

24. The network of claim 1, wherein:

the foreign mobile switching center includes a foreign accounting server; and

the foreign accounting collection module includes a sub-module to periodically send accounting reports to the foreign accounting server.

25. The network of claim 1, wherein:

the home mobile switching center includes a home accounting server;

a home accounting collection module in said home inter-working function includes a sub-module to periodically send accounting reports to the home accounting server.

26. The network of claim 25, wherein:

the home network further includes a home billing processor; and

the home accounting server includes a module to send accounting reports to the home billing processor, the home billing processor including a module to prepare customer bills based on the accounting reports from the home accounting server.

27. The network of claim 1, wherein:

the foreign network further includes a foreign accounting server and a foreign billing processor;

the foreign accounting collection module includes a sub-module to collect accounting data on message traffic transported through the first serving inter-working function, the foreign accounting collection module further including a sub-module to periodically send accounting reports to the foreign accounting server, the foreign accounting server including a module to send accounting reports to the foreign billing processor, the foreign billing processor including a module to send accounting reports to a home billing processor, the home billing processor including a module to prepare customer bills based on the accounting reports from the foreign billing processor.

28. The network of claim 1, wherein:

the foreign mobile switching center includes a foreign accounting server;

the home mobile switching center includes a home accounting server;

the foreign accounting collection module includes a sub-module to periodically send accounting reports to a foreign accounting server; and

a home accounting collection module includes a sub-module to periodically send accounting reports to a home accounting server.

48. The network of claim 28, wherein:

the home mobile switching center includes a home accounting server;

a home accounting collection module in a home inter-working function includes a sub-module to periodically send accounting reports to the home accounting server.

49. The network of claim 48, wherein:

the home network further includes a home billing processor; and

the home accounting server includes a module to send accounting reports to the home billing processor, the home billing processor including a module to prepare customer bills based on the accounting reports from the home accounting server.

29. A wireless data network coupled to a foreign network that includes a foreign mobile switching center and a base station that includes an access hub with a serving inter-working function, the wireless data network comprising:

a home network that includes a home mobile switching center, the home mobile switching center including plural home inter-working functions, one of which collects accounting data for billing purposes; and

an end system subscribed to the home network and operating within the foreign network, a message being transportable between the end system and the home accounting function through the serving inter-working function using a protocol that ensures in sequence delivery of data packets.

30. The network of claim 29, wherein the foreign mobile switching center including a serving registration server, and the access hub including a proxy registration agent, the data network comprising:

the home mobile switching center includes a home registration server;

the end system including an end registration agent, the end registration agent being coupled to the proxy registration agent, the proxy registration agent being coupled to the serving registration server, the serving registration server being coupled to the home registration server.

31. The network of claim 30, wherein the home registration server includes a module to authenticate that the foreign network is authorized to host the end system.

32. The network of claim 30, wherein the home registration server includes a module to authenticate that the end system is authorized to receive services of the home network.

33. The network of claim 29, wherein the foreign mobile switching center includes a serving registration server,

the home mobile switching center includes a home registration server and a plurality of unassigned home inter-working functions, and

the end system including an end registration agent to form a registration request, the end registration agent sending the registration request through the serving registration server to the home registration server, the home registration server including a module to select an active home inter-working function from the plurality of unassigned home inter-working functions based on the registration request.

34. The network of claim 33, wherein the home registration server includes a module to authenticate that the foreign network is authorized to host the end system.

35. The network of claim 33, wherein the home registration server includes a module to authenticate that the end system is authorized to receive services of the home network.

36. The network of claim 33, wherein:

the registration request includes service type information; and

the home registration server includes a module to control the selection of the active home inter-working function based on the service type information.

37. The network of claim 36, wherein the service type information specifies a request for one of public internet service and private intranet service.

38. The network of claim 36, wherein the service type information specifies a request for one of mobile service and fixed service.

39. The network of claim 33, wherein:

the registration request includes quality of service information; and

the home registration server includes a module to control the selection of the active home inter-working function based on the quality of service information.

40. The network of claim 39, wherein the quality of service information specifies a request for one of constant bit rate service, real time variable bit rate service, non-real time variable bit rate service, unspecified bit rate service and available bit rate service.

41. The network of claim 29, further comprising:

a second end system subscribed to the home network and operating as a fixed end system within the home network; and

a home base station that includes a home access hub with a second home inter-working function, a second message being transportable between the second end system and a second communications server through the second home inter-working function.

42. The network of claim 29, further comprising:

a second end system subscribed to the home network and operating as a mobile end system within the home network;

the home mobile switching center having a second home inter-working function, and

a home base station that includes a home access hub with a second serving inter-working function, a second message being transportable between the second end system and a second communications server through the second serving inter-working function and through the second home inter-working function.

43. The network of claim 29, wherein the first home inter-working function includes a home accounting collection module to collect accounting data on message traffic transported through the first home inter-working function.

44. The network of claim 29, wherein:

the home mobile switching center includes a home accounting server; and

the home accounting collection module includes a sub-module to periodically send accounting reports to a home accounting server.

45. The network of claim 44, wherein:

the home network further includes a billing processor; and

the home accounting server includes a module to send accounting reports to the billing processor, the billing processor including a module to prepare customer bills based on the accounting reports from the home accounting server.

46. The network of claim 45, wherein:

the foreign network further includes a foreign accounting server and a foreign billing processor;

the first serving inter-working function includes a foreign accounting collection module to collect accounting data on message traffic transported through the first serving inter-working function, the foreign accounting collection module including a sub-module to periodically send accounting reports to the foreign accounting server, the foreign accounting server including a module to send accounting reports to the foreign billing processor, the foreign billing processor including a module to send accounting reports to the home billing processor, the home billing processor including a module to prepare customer bills based on the accounting reports from the foreign billing processor.

47. The network of claim 29, wherein:

the home network further includes a home billing processor;

the foreign network further includes a foreign accounting server and a foreign billing processor;

the first serving inter-working function includes a foreign accounting collection module to collect accounting data on message traffic transported through the first serving inter-working function, the foreign accounting collection module including a sub-module to periodically send accounting reports to the foreign accounting server, the foreign accounting server including a module to send accounting reports to the foreign billing processor, the foreign billing processor including a module to send accounting reports to the home billing processor, the home billing processor including a module to prepare customer bills based on the accounting reports from the foreign billing processor.

50. The network of claim 29, wherein:

the foreign network further includes a foreign accounting server and a foreign billing processor;

the foreign accounting collection module includes a sub-module to collect accounting data on message traffic transported through the first serving inter-working function, the foreign accounting collection module further including a sub-module to periodically send accounting reports to the foreign accounting server, the foreign accounting server including a module to send accounting reports to the foreign billing processor, the foreign billing processor including a module to send accounting reports to a home billing processor, the home billing processor including a module to prepare customer bills based on the accounting reports from the foreign billing processor.

51. The network of claim 29, wherein:

the foreign mobile switching center includes a foreign accounting server;

the home mobile switching center includes a home accounting server;

the foreign accounting collection module includes a sub-module to periodically send accounting reports to a foreign accounting server; and

a home accounting collection module includes a sub-module to periodically send accounting reports to a home accounting server.

52. A home network for use in a coupled data network coupled to a foreign network that includes a foreign mobile switching center, which includes a serving hub with serving inter-working function and a proxy registration agent, and a roaming end system which is subscribed to the home network and operating within the foreign network, said roaming end system including an end registration agent, comprising:

a home mobile switching center including plural home inter-working functions, one of which collects accounting data for billing purposes and a home registration server;

wherein a message being transportable between the roaming end system and the home inter-working functions through the serving inter-working function using a protocol that ensures in sequence delivery of data packets

and the end registration agent being coupled to the proxy registration agent, the proxy registration agent being coupled to the serving registration server, the serving registration server being coupled to the home registration server.

53. The network of claim 52, wherein the home registration server includes a module to authenticate that the foreign network is authorized to host the roaming end system.

54. The network of claim 52, wherein the home registration server includes a module to authenticate that the roaming end system is authorized to receive services of the home network.

55. The network of claim 52, wherein:

the home registration server includes a module to authenticate that the foreign network is authorized to host the roaming end system;

the home registration server includes a module to authenticate that the roaming end system is authorized to receive services of the home network; and

wherein the serving registration server includes a module to authenticate that the roaming end system is a subscriber of the home network.

56. A roaming end system for use in a coupled data network coupled to a foreign network, that includes a foreign mobile switching center, which includes a serving hub with a serving inter-working function and a proxy registration agent, and a home network that includes a home mobile switching center including a home inter-working function and a home registration server, comprising:

the roaming end system subscribed to the home network and operating within the foreign network, a message being transportable between the roaming end system and the home inter-working function through the serving inter-working function using a protocol that ensures in sequence delivery of data packets.

57. A coupled data network comprising:

a foreign network that includes a foreign mobile switching center and a base station, the base station including an access hub with a serving inter-working function;

a home network that includes a home mobile switching center, the home mobile switching center including a home inter-working function;

a roaming end system subscribed to the home network and operating within the foreign network, a message being transportable between the roaming end system and the home inter-working function through the serving inter-working function using a protocol that ensures in sequence delivery of data packets; and

wherein the first home inter-working function includes a home accounting collection module to collect accounting data on message traffic transported through the first home inter-working function.

58. A wireless data network coupled to a foreign network that includes a foreign mobile switching center and a base station that includes an access hub with a serving inter-working function, the wireless data network comprising:

a home network that includes a home mobile switching center, the home mobile switching center including home inter-working function;

an end system subscribed to the home network and operating within the foreign network, a message being transportable between the end system and the home inter-working functions through the serving inter-working function using a protocol that ensures in sequence delivery of data packets; and

wherein the first home inter-working function includes a home accounting collection module to collect accounting data on message traffic transported through the first home inter-working function.

59. A wireless data network coupled to a foreign network that includes a foreign mobile switching center and a base station that includes an access hub with a serving inter-working function, the wireless data network comprising:

a home network that includes a home mobile switching center, the home mobile switching center including home inter-working function;

an end system subscribed to the home network and operating within the foreign network, a message being transportable between the end system and the home inter-working functions through the serving inter-working function using a protocol that ensures in sequence delivery of data packets; and

wherein;

the foreign network further includes a foreign accounting server and a foreign billing processor;

the foreign accounting collection module includes a sub-module to collect accounting data on message traffic transported through the first serving inter-working function, the foreign accounting collection module further including a sub module to periodically send accounting reports to the foreign accounting server, the foreign accounting server including a module to send accounting reports to the foreign billing processor, the foreign billing processor including a module to send accounting reports to a home billing processor, the home billing processor including a module to prepare customer bills based on the accounting reports from the foreign billing processor.

60. A wireless data network coupled to a foreign network that includes a foreign mobile switching center and a base station that includes an access hub with a serving inter-working function, the wireless data network comprising:

a home network that includes a home mobile switching center, the home mobile switching center including home inter-working function;

an end system subscribed to the home network and operating within the foreign network, a message being transportable between the end system and the home inter-working functions through the serving inter-working function using a protocol that ensures in sequence delivery of data packets; and

wherein;

the foreign mobile switching center includes a foreign accounting server;

the home mobile switching center includes a home accounting server;

the foreign accounting collection module includes a sub-module to periodically send accounting reports to a foreign accounting server; and

a home collection module includes a sub-module to periodically send accounting reports to a home accounting server.