MOBILE DEVICE PERFORMING DATA COMMUNICATION THROUGH CHARGING TERMINALS AND MOBILE SYSTEM INCLUDING SAME

A first mobile device including; first charging terminals, a power line communication modem configured to supply power to a second mobile device connected with the first charging terminals and to perform data communication with the second mobile device, wherein the data communication includes a plurality of data packets, and a microcontroller unit configured to generate primary data including a first data packet among the plurality of data packets, wherein the first data packet includes a first header and a first data message, wherein the first header includes a first code indicating a purpose for the first data packet, and the first data message includes upper bits indicating a destination for data and lower bits indicating a number of data packets included in a first group in the data.