发明名称 |
USER EQUIPMENT AND MOBILE COMMUNICATION METHOD |
摘要 |
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 (100A) 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 (100A) 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. |
申请公布号 |
EP2894839(A1) |
申请公布日期 |
2015.07.15 |
申请号 |
EP20130835513 |
申请日期 |
2013.09.05 |
申请人 |
NTT DOCOMO, INC. |
发明人 |
TANAKA, ITSUMA;OHASHI, AKI;HIMENO, HIROMI;SAKURAMOTO, HIDEYUKI |
分类号 |
H04M3/42;H04M3/00;H04M3/02;H04W36/00;H04W48/18;H04W88/06 |
主分类号 |
H04M3/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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