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.

Date of Patent:
Oct. 25, 2016

Filed:

May. 29, 2014
Applicant:

Ntt Docomo, Inc., Chiyoda-ku, Tokyo, JP;

Inventors:

Keiji Machida, Tokyo, JP;

Itsuma Tanaka, Tokyo, JP;

Yuusuke Okazaki, Tokyo, JP;

Kazuo Sugiyama, Tokyo, JP;

Assignee:

NTT DOCOMO, INC., Chiyoda-ku, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/00 (2009.01); H04W 68/00 (2009.01); H04W 60/00 (2009.01); H04W 48/18 (2009.01); H04W 60/04 (2009.01); H04W 88/06 (2009.01);
U.S. Cl.
CPC ...
H04W 60/005 (2013.01); H04W 48/18 (2013.01); H04W 60/00 (2013.01); H04W 60/04 (2013.01); H04W 88/06 (2013.01);
Abstract

Location information of a mobile communication terminal is registered promptly. When the mobile communication terminal receives a first location registration response signal, in which a predefined value indicative of a cause of rejecting the registration of the location information is set, the mobile communication terminal transmits a location registration request signal to a second mobile communication network when there is the second mobile communication network over which the mobile communication terminal can communicate, based on the predefined value. When it is determined that there is not the second mobile communication network or the location registration of the mobile communication terminal in the second mobile communication network is not completed, the mobile communication terminal carries out a first location registration operation of retransmitting the location registration request signal to the first mobile communication network.


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