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. 24, 2012
Filed:
Jun. 26, 2009
Mikio Iwamura, Yokohama, JP;
Wuri Andarmawanti Hapsari, Yokosuka, JP;
Shogo Yabuki, Yokosuka, JP;
Alf Zugenmaier, Munich, DE;
Mikio Iwamura, Yokohama, JP;
Wuri Andarmawanti Hapsari, Yokosuka, JP;
Shogo Yabuki, Yokosuka, JP;
Alf Zugenmaier, Munich, DE;
NTT DOCOMO, Inc., Tokyo, JP;
Abstract
A mobile communication method according to the present invention communicates between a mobile station (UE) and a radio base station (eNB) by using a certain key. The method includes the step of: (A) acquiring, at a radio base station managing a re-establishment target cell for the mobile station (UE), a first key (K) for generating a certain key from a switching center (MME) in a procedure for re-establishment of the mobile station (UE), the certain key to be used for communication between the mobile station (UE) and a next re-establishment target cell for the mobile station (UE).