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:
Apr. 22, 2008
Filed:
Mar. 06, 2003
Shinichi Isobe, Yokosuka, JP;
Ken Igarashi, Yokohama, JP;
Atsushi Iwasaki, Yokosuka, JP;
Kenji Nishimura, Yokosuka, JP;
Takashi Koshimizu, Yokosuka, JP;
Shinichi Isobe, Yokosuka, JP;
Ken Igarashi, Yokohama, JP;
Atsushi Iwasaki, Yokosuka, JP;
Kenji Nishimura, Yokosuka, JP;
Takashi Koshimizu, Yokosuka, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
A mobile communication systemaccording to the present invention comprises handover control apparatusand radio terminal unit. The handover control apparatuscontrols handover of a radio terminal unitbetween access routers-provided in respective base stations-for radio communication with the radio terminal unit. The handover control apparatuscounts the number of relay routers for every candidate access router-for a destination of the radio terminal unit, from a gateway deviceand determines a COR on the basis of the number of relay routers for every access routerthus counted.