Robot cleaner and location identification method thereof

A location identification method of a robot cleaner comprising a ultra wideband (UWB) communication module and a wireless communication module, the method comprising:

• identifying whether at least one electronic device capable of UWB communication and at least one electronic device capable of wireless communication are present in a space where the robot cleaner is located;
• based on the presence of a first electronic device capable of UWB communication and a second electronic device capable of wireless communication being identified, identifying a first distance between the first electronic device and the robot cleaner using the UWB communication module, identifying a second distance between the second electronic device and the robot cleaner using the wireless communication module;
• identifying a third distance between a charging station, located in the space and capable of UWB communication, and the robot cleaner using the UWB communication module;
• and
• identifying the location of the robot cleaner based on the first distance, the second distance, the third distance, the location of the first electronic device, the location of the second electronic device, and the location of the charging station,
• wherein the wireless communication includes a communication scheme different from the UWB communication.

A non-transitory computer readable recording medium storing computer instructions that cause a robot cleaner to perform an operation when executed by a processor of the robot cleaner, wherein the operation comprises;

• identifying whether at least one electronic device capable of UWB communication and at least one electronic device capable of wireless communication are present in a space where the robot cleaner is located;
• based on the presence of a first electronic device capable of UWB communication and a second electronic device capable of wireless communication being identified, identifying a first distance between the first electronic device and the robot cleaner using the UWB communication module, identifying a second distance between the second electronic device and the robot cleaner using the wireless communication module;
• identifying a third distance between a charging station, located in the space and capable of UWB communication, and the robot cleaner using the UWB communication module;
• and
• identifying the location of the robot cleaner based on the first distance, the second distance, the third distance, the location of the first electronic device, the location of the second electronic device, and the location of the charging station,
• wherein the wireless communication includes a communication scheme that is different from the UWB communication.