Patent ID: 8824345

Claim:
A wake-up apparatus for a low power sensor node, the apparatus comprising: a wake-up signal detector receiving and detecting a wake-up signal of a sensor node; a wake-up radio frequency (RF) circuit unit filtering and amplifying the wake-up signal; and a wake-up baseband transducer detecting a wake-up address from the wake-up signal and comparing and verifying the wake-up address with a wake-up address that is provided from a server managing the sensor node, and outputting an interrupt signal for transmitting a sensing event of the sensor node or outputting a wake-up address of another sensor node in an area where the interrupt signal is to be sensed if errors are not detected when the wake-up address is verified, wherein the wake-up signal comprises: a start packet region indicating the received signal is a wake-up signal; and a wake-up address information region comprising a mode information region storing a wake-up mode method of the sensor node and a region storing a wake-up address of the sensor node, wherein start packet region information, indicating that the received signal is a wake-up signal, is output as a reversed value of 0 or 1 and has an output form of one of 2 bits, 8 bits, and 16 bits.