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:
Jul. 28, 2009
Filed:
Apr. 18, 2005
Hideaki Takahashi, Yokohama, JP;
Masahiro Inoue, Yokosuka, JP;
Ichiro Okajima, Yokohama, JP;
Narumi Umeda, Yokohama, JP;
Hideaki Takahashi, Yokohama, JP;
Masahiro Inoue, Yokosuka, JP;
Ichiro Okajima, Yokohama, JP;
Narumi Umeda, Yokohama, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
A mobile hostas an embodiment of the invention comprises a data link layer connection establishment notification unitfor notifying the network layer that a connection to a link layer in the data link has been established during a Dormant state; a router information requesting unitfor transmitting, in response to the notification by the data link layer connection establishment notification unita router request signal which requests for transmission of router advertisement information to the access routerexisting on the access linkto which the mobile host is connected; and a network layer movement detection unitfor detecting a default router, based on the router advertisement information returned from the access routerin response to the router request signal.