The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 2008
Filed:
Feb. 05, 2003
Daisuke Ochi, Yokohama, JP;
Ken Igarashi, Yokohama, JP;
Daisuke Ochi, Yokohama, JP;
Ken Igarashi, Yokohama, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
An object is to ensure reachability of data even with movement of a session between communication nodes. A home node HN-1 generates a home session address HSA-1 and establishes a session with communication correspondent. On the occasion of movement of the session, the home node HN-1 notifies a foreign node FN-1 that it desires to move the session to the foreign node FN-1. The foreign node FN-1 internally generates an IP address HSA-1, copies a state of the session in the home node HN-1, and thereafter notifies a communication mediator nodeof correspondence update information 'HSA-1→HNA-2' in order to let the communication mediator nodepass data addressed to HSA-1 to a home node identification address HNA-2 by tunneling. The communication mediator nodepasses the data to HNA-2 by tunneling on the basis of the correspondence update information and another communication mediator nodeagain passes the data to a care-of address CoA-2 by tunneling.