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.

Date of Patent:
Mar. 23, 2010

Filed:

Feb. 25, 2005
Applicants:

Tetsuo Imai, Tokyo, JP;

Soichiro Araki, Tokyo, JP;

Yoshihiko Suemura, Tokyo, JP;

Norihito Fujita, Tokyo, JP;

Tomoyoshi Sugawara, Tokyo, JP;

Inventors:

Tetsuo Imai, Tokyo, JP;

Soichiro Araki, Tokyo, JP;

Yoshihiko Suemura, Tokyo, JP;

Norihito Fujita, Tokyo, JP;

Tomoyoshi Sugawara, Tokyo, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 12/28 (2006.01);
U.S. Cl.
CPC ...
Abstract

To eliminate interruption of a service used by a user and reset of communication caused by switching of an operating server such as a process migration or the like. On receiving a session migration start request, server/network cooperation control meansissues an operating server-switching control start notification to an operating server switching control means(step S). On receiving the operating server switching control start notification, the operating server switching control meansswitches an operating server. Next, on receiving an operating server switching control completion notification, the server/network cooperation control meanssends a connection destination target network-switching request to a connection control means(step S). The connection control meansswitches the connection destination target network of the user corresponding to a user name whose connection destination target network is to be switched, from a target network including a main server to a switch destination target network including a backup server (step S).


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