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:
Mar. 14, 2017
Filed:
Sep. 05, 2013
Ntt Docomo, Inc., Tokyo, JP;
Itsuma Tanaka, Tokyo, JP;
Aki Ohashi, Tokyo, JP;
Hiromi Himeno, Tokyo, JP;
Hideyuki Sakuramoto, Tokyo, JP;
NTT DOCOMO INC, Tokyo, JP;
Abstract
A mobile station and a mobile communication method are provided, which are, if being able to output a local ringing tone and a NW-provided ringing tone, capable of continuing a ringing tone outputted before a transition from LTE to 3G by aSRVCC even after the transition is made. A UE (A) executes continuation processing (aSRVCC) of a 3G voice communication service if the mobile station makes a transition of the connection destination from LTE to 3G during an alert period when the other party in the voice communication service is being alerted. Further, the UE (A) outputs a NW-provided ringing tone without outputting a local ringing tone based on data stored in the mobile station after making a transition to a second radio access system if aSRVCC is executed during a period when the NW-provided ringing tone is being outputted.