ADAPTIVE FREQUENCY HOPPING WIRELESS SYSTEM FOR A REAL TIME INTERFERENCE AVOIDANCE AND METHOD FOR CHANGING CHANNEL USING THE SAME

摘要

The present invention relates to a wireless transceiving apparatus changing channels dynamically and a method for changing channels using the same. According to the present invention, a wireless system for changing frequencies includes a master device performing wireless communications with multiple slave devices, wherein the master device includes: a system information transceiving unit which delivers data transceiving channel information and preliminary data transceiving channel information through multiple beacon channels to the multiple slave devices in the system information transceiving period and receives transceiving channel change request signal for the preliminary data and the data transceiving channel from the slave devices; and a data transceiving unit which transceives data with the multiple slave devices through the data transceiving channels in the data transceiving period. According to the present invention, the slave device which does not need to receive data from the master device operates in a low power mode after receiving the system information from the beacon channel until the slave transceiving period starts, which can minimize the power consumption of the slave device. In addition, in the case interference occurs in the data transceiving channel between the master device and the slave device, it can be changed to the pre-searched preliminary data transceiving channel, which can actively deal with the interference circumstances.