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:
Dec. 13, 2016
Filed:
Jan. 21, 2013
Applicants:
Yusuke Miyagawa, Tokyo, JP;
Takayuki Kido, Tokyo, JP;
Takuo Akimoto, Tokyo, JP;
Yuki Nakanishi, Tokyo, JP;
Yasuhiro Watanabe, Tokyo, JP;
Inventors:
Yusuke Miyagawa, Tokyo, JP;
Takayuki Kido, Tokyo, JP;
Takuo Akimoto, Tokyo, JP;
Yuki Nakanishi, Tokyo, JP;
Yasuhiro Watanabe, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04W 36/00 (2009.01); H04W 68/12 (2009.01); H04W 48/18 (2009.01);
U.S. Cl.
CPC ...
H04W 36/0022 (2013.01); H04W 48/18 (2013.01); H04W 68/12 (2013.01);
Abstract
When a voice call is made from or received by UE () that is present in both 3G femto area () and LTE area (), line switching for making a voice call or receiving a voice call is performed from MME () to P-CSCF () by using a predetermined protocol.