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:
Nov. 15, 2011
Filed:
Jul. 20, 2007
Applicants:
Hiroyuki Ishii, Yokosuka, JP;
Yousuke Iizuka, Yokosuka, JP;
Inventors:
Hiroyuki Ishii, Yokosuka, JP;
Yousuke Iizuka, Yokosuka, JP;
Assignee:
NTT DoCoMo, Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04Q 7/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A mobile station includes a handover controller. When the mobile station simultaneously communicates with a plurality of radio base stations by using first channels and communicates only with a certain one of the plurality of radio base stations by using a second communication channel, and even when the radio quality of the certain radio base station communicating by using the second communication channel becomes deteriorated, the handover controller maintains communications with the certain radio base station communicating by using the second communication channel.