Wireless power transmission system, method and apparatus for communication channel allocation and power transmission in wireless power transmission system
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PURPOSE: A communication channel allocation and power transmission method and an apparatus thereof in a wireless power transmission system are provided to perform communication between a source device and a target device without interference to the other electronic device. CONSTITUTION: A power converting unit(114) converts DC voltage into AC voltage by using a resonant frequency. The power converting unit generates wake-up power or charge power. A source resonator(116) transmits the wake-up power or charge power through magnetic coupling. A control and communication unit(115) selects a communication channel for control for performing communication with the target device. The control and communication unit transmits an initial control signal to the target device through the selected communication channel. [Reference numerals] (114) Power converting unit; (115) Control and communication unit; (122) Rectifying unit; (126) Control and communication unit