PATENTSCOPE sera indisponible durant quelques heures pour des raisons de maintenance le lundi 03.02.2020 à 10:00 AM CET
Recherche dans les collections de brevets nationales et internationales
Une partie du contenu de cette demande n'est pas disponible pour le moment.
Si cette situation persiste, contactez-nous auObservations et contact
1. (WO2008049968) MÉTHODE DE TRANSFERT DANS UN SYSTÈME DE COMMUNICATION
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS :
1. A method, comprising:
sending a transport connection establishment request from a first network node to a second network node;
obtaining a node name for said second network node;
detecting a handover condition in said first network node;
obtaining a second address for said first network node;
updating said second address for said first network node to a name service node; and
sending a transport connection migration request to said second network node, said transport connection migration request comprising a token identifying said connection .
2. The method according to claim 1, the method further comprising:
adding a public key of said first network node to said transport connection establishment request;
obtaining a public key for said second network node;
computing a shared secret with said public key of said first network node and said public key of said second network node; and
computing said token using said shared secret.
3. The method according to claims 1 or 2, the method further comprising:
detecting a timer expiry for a reply to said transport connection migration request;
obtaining a second address for said second network node using said node name for said second network node; and
sending said transport connection migration request to said second network node, said transport connection migration request comprising said token.

4. The method according to any of the preceding claims 1 - 3, the method further comprising:
starting a first transport process upon sending a transport connection migration request in said first network node;
starting a second transport process upon receiving a transport connection migration request in said first network node;
detecting connection migration completion of said first transport process; and
abandoning said second transport process.
5. The method according to any of the preceding claims 1 - 4, wherein said transport connection comprises a transport control protocol connection.
6. The method according to any of the preceding claims 1 - 5, wherein said name service node comprises a domain name server.
7. A communication system comprising:
a first network node configured to send a trans-port connection establishment request to a second network node, to obtaining a node name for said second network node, to detect a handover condition, to obtain a second address, to request updating of said second address for said first network node to a name service node and to send a transport connection migration request to said second network node, said transport connection migration request comprising a token identifying said transport connection;
said second network node configured to receive said transport connection establishment request and to receive said transport connection migration request; and
said name service node to receive said request for updating of said second address for said first network node.
8. The communication system according to claim 7, the system further comprising: said first network node configured to add a public key of said first network node to the transport connection establishment request, to obtain a public key for said second network node, to compute a shared se-cret with said public key of said first network node and said public key of said second network node and to compute said token using said shared secret; and
said second network node configured to provide said public key for said second network node to said first network node.
9. The communication system according to claims 7 or 8, the system further comprising:
said first network node configured to detect a timer expiry for a reply to said transport connection migration request, to obtain a second address for said second network node using said node name for said second network node and to send said transport connection migration request to said second network node, said transport connection migration request comprising said token.
10. The communication system according to any of the preceding claims 7 - 9, the system further comprising :
said first network node configured to start a first transport process upon sending a transport connection migration request, to start a second transport process upon receiving a transport connection migration request, to detect connection migration completion of said first transport process and to abandon said second transport process.
11. The communication system according to any of the preceding claims 7 - 10, wherein said transport connection comprises a transport control protocol connection .
12. The communication system according to any of the preceding claims 7 - 11, wherein said name service node comprises a domain name server.

13. A network node comprising:
a transport entity configured to send a transport connection establishment request to a second network node, to obtaining a node name for said second network node, to detect a handover condition, to obtain a second address, to request updating of said second address for said network node to a name service node and to send a transport connection migration request to said second network node, said transport connection migration request comprising a token identifying said transport connection.
14. A network node comprising:
means for sending a transport connection establishment request to a second network node;
means for obtaining a node name for said second network node;
means for detecting a handover condition;
means for obtaining a second address;
means for requesting the updating of said second address for said network node to a name service node; and
means for sending a transport connection migration request to said second network node, said transport connection migration request comprising a token iden-tifying said transport connection.
15. A computer program comprising code adapted to perform the following steps when executed on a data-processing system:
sending a transport connection establishment re-quest to a second network node;
obtaining a node name for said second network node;
detecting a handover condition;
obtaining a second address;
requesting the updating of said second address for said network node to a name service node; and sending a transport connection migration request to said second network node, said transport connection migration request comprising a token identifying said transport connection.
16. The computer program according to claim

15, wherein said computer program is stored on a computer readable medium.
17. The computer program according to claim

16, wherein said computer readable medium is a remov-able memory card.
18. The computer program according to claim 16, wherein said computer readable medium is a magnetic or an optical disk.