Patent ID: 9532381
Filing Date: 2016-12-27
CPC Classification: H04W

Claim Text:
1. A hidden node detection apparatus in a wireless communication system, the apparatus comprising: a sensing unit to sense a first communication device transmitting a data signal from among a plurality of communication devices sharing a wireless channel; a transmitter to generate a reception notification signal in response to the sensing, and transmit the reception notification signal to a plurality of communication devices through a band identical to a transmission band of the data signal, wherein the transmitter transmits the reception notification signal continuously when an intensity of the transmitted data signal is greater or equal to a set threshold or a frame length of the transmitted data signal is less than an overall frame length value; and a controller to prevent a collision with the data signal transmitted from the first communication device through the wireless channel by delaying processing of a data transmission request when the data transmission request is input from a second communication device among the plurality of communication devices while maintaining the transmitting of the reception notification signal, wherein the controller controls a data signal of the second communication device when the transmission of the reception notification signal is suspended.