Wireless Communication Terminal, Communication Control Method of Wireless Communication Terminal, and Wireless Communication System

A communication control method of a wireless communication terminal comprising a communication part capable of capturing a plurality of communication systems and capable of executing communication by a communication protocol and a memory part and controlling the communication by the communication part by any of the plurality of communication systems using the communication protocol when the start of communication is instructed,

• said communication control method of a wireless communication terminal comprising:
• a step of storing information specifying a successfully acquired communication system among the plurality of communication systems as the success history in the memory part;
• a step of having the communication part perform a trial acquisition using the communication system specified by the success history as the target for acquisition when the start of communication is requested in a state judged as “out-of-service-area” where communication cannot be carried out;
• a step of having the communication part perform the trial acquisition using a communication system not specified by the success history among the plurality of communication systems as the target for acquisition where the trial acquisition fails;
• and
• a step of starting the communication when the trial acquisition by the communication part succeeds.

A wireless communication system comprising:

• a base station;
• and
• a wireless communication terminal performing wireless communication with the base station through a channel assigned by the base station, wherein
• the wireless communication terminal has
• a communication part capable of capturing a plurality of communication systems and capable of executing communication according to a communication protocol,
• a control part which controls communication by the communication part by any of the plurality of communication systems using the communication protocol when a start of communication is instructed, and
• a memory part,
• the memory part stores information specifying a successfully acquired communication system among the plurality of communication systems as the success history, and
• the control part
• performs the trial acquisition by the communication part using the communication system specified by the success history as the target for acquisition when the start of communication is instructed in the state judged as the “out-of-service-area” state where the communication cannot be carried out, performs the trial acquisition by the communication part using a communication system not specified by the success history among the plurality of communication systems as the target for acquisition when the trial acquisition fails, and
• starts the communication when the trial acquisition by the communication part succeeds.