Ntt Docomo, Inc.

Aki Ohashi

Hiromi Himeno

Itsuma Tanaka

Hideyuki Sakuramoto

Masashi Kanauchi

Kyoko Masuda

Kenji Tsuruta

Kei Akiyama

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.

Mobile station and mobile communication method

A mobile station and a mobile communication method are provided, which are capable of continuing output of an announcement sound even if a transition is made from LTE to 3G by SRVCC when the announcement sound is being received from a network side in response to a call request to a call-terminating terminal. A UEA executes continuation processing (SRVCC) of a 3G voice communication service if the mobile station makes a transition of a connection destination from LTE to 3G. Further, the UEA receives the announcement sound via LTE or 3G, and outputs the announcement sound after requesting alerting of the other party and before starting the alerting of the other party. The UEA outputs the announcement sound even after making a transition to 3G if the continuation processing of the voice communication service is executed during a period when the announcement sound is being outputted.

When a browser is started up by a user, a packet call establishment request unit of a cellular phone requests the start of processing for establishing a packet call, and a communication control unit executes a packet all establishment processing. A mobile communication network sends a packet call establishment response message to the cellular phone, then sends packet data. A packet date storage unit of the cellular phone stores the packet data in a memory when packet data is received before the packet call establishment response message. If the packet call establishment response message is received thereafter, the packet data storage unit reads the packet data from the memory, and deletes the packet data from the memory. The packet processing execution unit displays a screen corresponding to the packet data on the display. Thereby, instances when packet data is discarded is decreased.

Mobile communication apparatus that stores packet data in a packet call establishment process

It is an object of the present invention to improve the convenience for users by enabling messages during call out from the user of the communication terminal on the outgoing side to the user of a communication terminal on the incoming side, which are transmitted from the communication terminal on the outgoing side, to be checked by the user of the communication terminal on the outgoing side when calling out. The outgoing terminalincludes a display device, a call connection establishment unitthat transmits call out signals for calling out to the incoming terminal, a transmitted information setting and adding unitthat adds display information that is displayed in the incoming terminalto the call out signal, and a display control unitthat displays on the display devicethe display information added to the call out signal when the call out signal is transmitted.

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Tokyo, Japan

Aki Ohashi