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. 23, 2013
Filed:
Nov. 01, 2006
Applicant:
Kazuyuki Kozu, Yokosuka, JP;
Inventor:
Kazuyuki Kozu, Yokosuka, JP;
Assignee:
NTT DoCoMo, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 1/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
A communication apparatus according to the present invention is provided with a mobile station, a packet transfer apparatus, and an access pointwhich relays between the mobile stationand the packet transfer apparatus. The cellular side access pointtransmits a tunnel switch request to the second radio network area, when an authentication processing for establishing a secured connection between the mobile station and the second radio network succeeds, and when the mobile station changes from the first radio network area to the second radio network area.