Hidden node detection method and apparatus in wireless communication system
First Claim
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.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is a hidden node detection method and apparatus in a wireless communication system, the apparatus including 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 the a plurality of communication devices through a band identical to a transmission band of the data signal, 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.
4 Citations
20 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A hidden node detection method in a wireless communication system, the method comprising:
-
sensing a first communication device transmitting a data signal, from among a plurality of communication devices sharing a wireless channel; generating a reception notification signal in response to the sensing, and transmitting the generated reception notification signal to the plurality of communication devices through a band identical to a transmission band of the data signal, wherein the reception notification signal is transmitted 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 preventing 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 transmission of the reception notification signal, wherein a data signal of the second communication device is controlled by a controller when the transmission of the reception notification signal is suspended. - View Dependent Claims (18, 19, 20)
-
Specification