Real-Time Data Transmission Method Using Frequency Hopping Spread Spectrum

A real-time data transmission method using a frequency hopping spread spectrum, the method being applied to a transmission device that communicates real-time data, the method comprising the steps of:

• a) indexing all transmittable channels and generating at least one frequency index group, each including a plurality of channel indices, and at least one frequency group corresponding respectively to the at least one frequency index group;
• b) selecting one of the at least one frequency index group using an ID of the transmission device and setting, as a setting channel, a frequency corresponding to a channel index randomly selected from the selected frequency index group and transmitting real-time data;
• c) determining whether or not channel interference is present in the setting channel and, if it is determined that channel interference is present, retransmitting data with which an error has occurred or changing the setting channel to a new setting channel corresponding to a frequency corresponding to another channel index included in the selected frequency index group and transmitting real-time data, depending on type of the channel interference;
• and
• d) setting, as a test channel, each of a plurality of frequencies corresponding to a plurality of channel indices other than the channel index of the setting channel and analyzing the test channel and changing the setting channel using the analyzed result after a setting time.