Apparatus and method for loading radiomap database, and terminal device

A method of loading a radiomap database (DB), comprising:

• calculating, by a moving information calculation unit, moving information of a terminal based on a difference between a previous location and estimated final location of the terminal as the terminal moves;
• and
• loading, by a loading performance unit, a radiomap DB including information about a neighboring node of a reference point, located in a direction in which the terminal moves, based on a radiomap DB including information about a neighboring node of each reference point and the moving information calculated by the moving information calculation unit.

A terminal device, comprising:

• a radiomap DB loading unit configured to load a radiomap DB of an area, corresponding to a direction and distance in and by which a terminal moves, based on a radiomap DB including moving information resulting from the movement of the terminal and information about a neighboring node of each reference point;
• and
• a location estimation unit configured to estimate a location of the corresponding terminal based on the radiomap DB loaded by the radiomap DB loading unit.