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Title:
MOBILE STATION, MOBILE SWITCHING CENTER, AND MOBILE COMMUNICATION METHOD
Document Type and Number:
Japanese Patent JP2009284507
Kind Code:
A
Abstract:

To provide a mobile station, mobile center, and mobile communication method in which a mobile station automatically retries a call procedure when a selected cell does not have setting information "UE Context".

This mobile station 100 includes: a cell selecting unit 106 for retrying a cell selection process for a predetermined time period after the mobile station fails to detect a radio link formed between the mobile station and a first wireless base station for controlling a first cell; a connection retry request signal transmission unit 102 for transmitting a connection retry request signal to a second radio base station for controlling a second cell when a selected second cell is determined to be a cell using the same radio access system as the first cell; and a call retry procedure start unit 116 for starting a call retry procedure to a mobile switching center for controlling the second radio base station when a response signal received from the second radio base station with respect to a connection retry request signal is determined to reject reconnection, or when the second cell is determined to be a cell using a different radio access system from the first cell.


Inventors:
ISHII MINAMI
IWAMURA MIKIO
NISHIDA KATSUTOSHI
Application Number:
JP2009165884A
Publication Date:
December 03, 2009
Filing Date:
July 14, 2009
Export Citation:
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Assignee:
NTT DOCOMO INC
International Classes:
H04W36/16; H04W36/08; H04W36/14; H04W88/06
Domestic Patent References:
JP2007089135A2007-04-05
Foreign References:
US20080057948A12008-03-06
WO2008001452A12008-01-03
WO2007089560A12007-08-09
WO2007086679A12007-08-02
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Masakazu Ito
Shunichi Takahashi
Ichitaro Ito