Mobile communication device and mobile communication system

A mobile communication system comprising a plurality of terminals and a mobile communication device that sends data to said terminals via an orthogonal frequency division multiplexing method,

• said mobile communication device comprising:
• a mapping table in which information on a code rate and frequency sending efficiency is made to correspond to a communication quality index, said communication quality index being sent from the terminals based on a reception quality of a reference signal sent to the terminals;
• and
• a resource management unit that, for wireless resource blocks that said mobile communication device can allocate to the terminals, manages a number of resource blocks already allocated to terminals and a number of free resource blocks;
• said mobile communication device further comprising:
• a data communication speed calculation unit that, based on an application start request from a terminal of the terminals, refers to information on the number of free resource blocks, managed by said resource management unit, and said mapping table and calculates a data communication speed based on the communication quality index, the code rate, and the frequency sending efficiency received from the terminal;
• a statistical traffic amount calculation unit that performs a statistical calculation by collecting traffic amounts sent from said mobile communication device to the terminals, and calculates a statistical value of a traffic amount of said mobile communication device during each hour of the 24 hours of a day;
• a free resource blocks conversion unit that calculates a statistical value of the number of free resource blocks during each hour of the 24 hours of a day from the statistical value of the traffic amount;
• a maintaining time calculation unit that calculate an estimated maintaining time of the data communication speed, calculated by said data communication speed calculation unit, from the statistical value of free resource blocks calculated by said free resource blocks conversion unit;
• and
• a sending unit that sends the data communication speed and the maintaining time to the terminals,
• each of said terminals comprising a control unit that controls parts;
• and a display unit wherein:
• said control unit displays on said display unit the data communication speed and the maintaining time sent from the mobile communication device, and information for prompting a user to select whether or not activation of the application will continue and said control unit controls a connection of the application based on the selection of the user.