Robot and controlling method thereof

A method of controlling a robot, the method comprising:

• transmitting first identification information of the robot and first state information of the robot to an external server;
• based on receiving, from the external server, information comprising second identification information of at least one other robot, second type information of the at least one other robot, second state information of the at least one other robot, and driving information about a planned movement route of the at least one other robot, storing the received information and updating stored information corresponding to the at least one other robot based on the received information of the at least one other robot;
• identifying that a communication error has occurred in communication between the robot and the external server,
• based on identifying that the communication error originated from the external server, determining whether the robot is to operate as a master robot by comparing the second type information and the second state information with first type information of the robot and the first state information based on most recent updated information based on a time point when the communication error occurred;
• based on determining that the robot is to operate as the master robot, planning a movement route of the at least one other robot based on task information of the at least one other robot;
• and
• transmitting the planned movement route to the at least one other robot.

A non-transitory computer-readable recording medium storing therein computer-readable instructions, the computer-readable instructions being used for executing a method, the method comprising:

• transmitting first identification information of a robot and first state information of the robot to an external server;
• based on receiving, from the external server, information comprising second identification information of at least one other robot, second type information of the at least one other robot, second state information of the at least one other robot, and driving information about a planned movement route of the at least one other robot, storing the received information and updating stored information corresponding to the at least one other robot based on the received information of the at least one other robot;
• identifying that a communication error has occurred in communication between the robot and the external server,
• based on identifying that the communication error originated from the external server, determining whether the robot is to operate as a master robot by comparing the second type information and the second state information with first type information of the robot and the first state information based on most recent updated information based on a time point when the communication error occurred;
• based on determining that the robot is to operate as the master robot, planning a movement route of the at least one other robot based on task information of the at least one other robot;
• and
• transmitting the planned movement route to the at least one other robot.