Plurality of autonomous mobile robots and controlling method for the same

A method for controlling a mobile robot, the method comprising:

• determining, by a control unit of a mobile robot, a first distance between an antenna of the first mobile robot and a first antenna of the second mobile robot and a second distance between the antenna of the first mobile robot and a second antenna of the second mobile robot, respectively, when a signal is received through the first antenna and the second antenna of the second mobile robot;
• determining, by the control unit, two intersections between a first circle and a second circle, the first circle having the first distance as a radius and the second circle having the second distance as a radius;
• and
• determining, by the control unit, one of the two intersections as a relative position of the first mobile robot based on an intensity of the signal received in the first antenna and the second antenna.