Mobile communication terminal and computer readable recording medium

A mobile communication terminal having a wireless local area network (LAN) connection function, comprising:

• a communication method determining unit configured to determine whether communication through a wireless LAN is available, upon a start of a data communication operation;
• a battery remaining amount detecting unit configured to periodically detect a battery remaining amount of the mobile communication terminal when the communication method determining unit determines that communication through the wireless LAN is available, under a condition that execution of an application for the data communication operation is continuing through the wireless LAN;
• and
• a communication method selecting unit configured to perform a battery-based selecting operation for selecting a communication method to be used for the data communication operation, based on the battery remaining amount of the mobile communication terminal detected by the battery remaining amount detecting unit, wherein the communication method selecting unit switches the communication method to cellular communication from the wireless LAN if the battery remaining amount is determined to not satisfy the predetermined condition;
• wherein the battery remaining amount detecting unit does not perform the battery remaining amount detection if the communication method determining unit determines that communication through the wireless LAN is not available,
• wherein the communication method selecting unit terminates the execution of the battery-based selecting operation in a case where the application for the data communication operation through the wireless LAN is not continuously running through the wireless LAN, even if the wireless LAN communication is available.

A non-transitory computer-readable recording medium storing a program for controlling a computer for controlling a mobile communication terminal having a wireless local area network (LAN) connection function, to realize:

• a function of determining whether communication through a wireless LAN is available, upon a start of a data communication operation;
• a function of detecting a battery remaining amount of the mobile communication terminal;
• a function of performing a battery-based selecting operation for selecting a communication method based on the battery remaining amount and which selects the wireless LAN to start the data communication operation through the wireless LAN if the battery remaining amount, detected at a time when the wireless LAN is determined to be available, satisfies a predetermined condition for executing the data communications through the wireless LAN;
• a function of continuously executing the battery-based selecting operation based on the detected battery remaining amount under a condition that an application for the data communication operation is continuously running through the wireless LAN, and switching the communication method to cellular communication from the wireless LAN if the battery remaining amount is determined to not satisfy the predetermined condition;
• and
• a function of controlling the data communication operation so that the data communication operation through the wireless LAN continues with data communication through the cellular communication operation if the communication method is switched to the cellular communication,
• wherein the function of continuously executing the battery-based selecting operation controls the function of performing the battery-based selecting operation to terminate the execution of the battery-based selecting operation if the application for the data communication operation through the wireless LAN is not continuously running through the wireless LAN, even if the wireless LAN communication is available.

A non-transitory computer-readable recording medium storing a program for controlling a computer for controlling a mobile communication terminal having a wireless local area network (LAN) connection function, to realize:

• a function of determining whether communication through a wireless LAN is available, upon a start of an application which performs a data communication operation;
• a function of periodically detecting a battery remaining amount of the mobile communication terminal, when the communication through the wireless LAN is available, under a condition that execution of the application for the data communication operation is continuing through the wireless LAN;
• a function of connecting to the available wireless LAN to perform communication, when the battery remaining amount is equal to or greater than a predetermined threshold;
• and
• a function of performing an output for recommending communication through cellular communication, when the battery remaining amount becomes less than the threshold, wherein the detection of the battery remaining amount is not performed if communication through the wireless LAN is determined to not be available,
• wherein the function of performing the output for recommending communication through cellular communication is terminated if the application for the data communication operation through the wireless LAN is not continuously running through the wireless LAN, even if the wireless LAN is available.