Method to Transfer Data Packets From First Portable Source Endpoint Belonging to Moving Network to Second Destination Endpoint Belonging to Second, Preferably Packet Oriented Network

• US 20080267186A1
• Filed: 11/11/2005
• Published: 10/30/2008
• Est. Priority Date: 12/01/2004
• Status: Abandoned Application

• Current Assignee: Nokia Networks (Nokia Corporation)
• Original Assignee: Nokia Networks (Nokia Corporation)
• Inventors: Eisl, Jochen, Farr, Louise, Boukis, Konstantinos
• Application Number:
  US11/791,634
• Publication Number:
  US 20080267186A1
• Time in Patent Office: Days
• US Class Current: 370/392
• CPC Class Codes: H04L 61/2514 between local and global IP addresses
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 84/005 Moving wireless networks

Abstract

Address translation is performed by a home domain of a first, e.g., mobile, network which may be moving relative to a second, e.g., packet oriented network, to convert the address of a first endpoint in the mobile network, associated with the home address of the first network to a second destination endpoint belonging to the second network.

Claims

1-15. -15. (canceled)

16. A method of transferring data packets from a first endpoint of a portable source belonging to a first network that is mobile to a second destination endpoint belonging to a second network that is packet oriented, where the first network may be moving relatively to the second network, comprising:

translating addresses for data packets by a home network domain of the first network, where a first address of the first endpoint is associated with a home address of the first network.

17. A method according to claim 16, wherein said translating is based on a set of identifiers used to distinguish the data packets and determine which of the addresses is used for translation.

18. A method according to claim 17, wherein said translating is further based on static configuration parameters, including at least one of address header information, user policies, network policies, state information related to a packet, and state information related to a current location of the first network.

19. A method according to claim 18, further comprising translating additional addresses for additional data packets destined to the first network, before the additional data packets are forwarded to the current location of the first network.

20. A method according to claim 19, further comprising, when the data packets are originated by the first endpoint,

forwarding the data packets to the home network domain of the first network;

and

replacing, in the home network domain, a source address field with a mobile access point home address for a mobile router located in the first network and corresponding to the first endpoint.

21. A method according to claim 20, further comprising using a tunnelling mechanism which hides a private address allocated to the first endpoint from any transport network located outside the first network.

22. A method according to claim 21, wherein the home domain of the first network serves additional moving networks.

23. A method according to claim 22, further comprising assigning, by the home domain, an individual network address prefix for the first network and each additional moving network served by the home domain.

24. A method according to claim 23, further comprising obtaining the private address and a public address by the first endpoint during one of an authentication procedure and any later time.

25. A method according to claim 24, further comprising supporting a handover process from the first network to one of the additional moving networks served by the home domain of the first network by associating the first address of the first endpoint when moved to the additional moving network with a moving address of the additional moving network.

26. A method according to claim 25, further comprising:

initiating the handover process; and

sending the additional data packets to both the first network and the additional moving network until the handover process is completed.

27. A method according to claim 26, further comprising allocating to a second endpoint, which is subject to a future handover request, a second address from a specific network address prefix maintained by a moving network domain.

28. A method according to claim 27, further comprising obtaining, by a third endpoint, a third address from a network prefix with special significance which is registered with another home network domain of the third endpoint, to by-pass translating performed by the home network domain of the first endpoint.

29. A mobile access point located in a first network transferring data packets from a first endpoint of a portable source belonging to the first network that is mobile to a second destination endpoint belonging to a second network that is packet oriented, where the first network may be moving relatively to the second network, said mobile access point comprising:

means for employing a tunneling mechanism for transfer of data packets, which hides a private address allocated to the first endpoint from any transport network located outside the first network.

30. A home access point located in a home network domain of a first network transferring data packets from a first endpoint of a portable source belonging to the first network that is mobile to a second destination endpoint belonging to a second network that is packet oriented, where the first network may be moving relatively to the second network, said home access point comprising

means for translating addresses to replace a source address field with a home address of the first endpoint and vice versa.