Method for setting power control initial value using indication light in visible light communications and transmission/receive apparatus using the same

An apparatus using a method for setting a power control initial value by using an indication light in visible light communications, the apparatus comprising:

• a visible light communication transmitter for generation of a plurality of indication lights each having a power level different from the others whereby a transmitted power initial value is set simultaneously with alignment of a position between a visible light communication transmitter and a visible light communication receiver at the very beginning of communication, and for transmission of data to the visible light communication receiver by using the transmitted power initial value according to a selected power level selected by the visible light communication receiver;
• and
• a visible light communication receiver for alignment of a communication position simultaneously with measurement of Received Signal Strength Indication (RSSI) of the indication light on detection of the indication light transmitted from the visible light communication transmitter, for selection of a power level whose RSSI is in a preset threshold rage and which is adequate for transmission/reception among the plurality of power levels different from each other, and for provision of information on the selected power level of the visible light communication transmitter.