Abstract:
A method of generating networks by utilizing a multi-channel so that channels may be efficiently used, inter-channel interference may be avoided, and a network may be energy efficiently managed is provided. Through a super personal area network (PAN) coordinator that manages all networks based on a multi-channel, a PAN capable of avoiding inter-channel interference may be formed. In addition, it is possible to grasp use states of channels used for transmitting and receiving beacon frames, to observe a change in a network topology, and to form an energy efficient PAN.
Abstract:
A high frequency transmitting and receiving apparatus of a wireless communication system low-noise amplifies a signal that is received from a transmitting and receiving antenna through a low noise amplifier in a reception mode, and amplifies a signal be transmitted through a power amplifier in a transmission mode and transmits the signal through the transmitting and receiving antenna, and the high frequency transmitting and receiving apparatus is connected between the transmitting and receiving antenna and the low noise amplifier and turns on a switch in a reception mode and turns off the switch in a transmission mode, thereby separating transmitting and receiving signals.