Ack/nak transmission method in wireless communication system

PURPOSE: A transmission method for transmitting ACK(ACKnowledgement) or NAK(Negative-ACKnowledgement) in a wireless communication system is provided to reduce the transmission number and time of packets by adding packet data to a beacon message. CONSTITUTION: The value of ACK is different from the value of NAK in a master node(S201). A sequence number for a plurality of sensor nodes is determined in the master node(S203). A packet is transmitted from the sensor nodes to the master node(S205). One response packet is generated in the master node(S207). The response packet includes response information for a reception state of the transmitted packets. [Reference numerals] (AA) Start; (BB) End; (S201) Setting ACK and NAK with different values; (S203) Determining the sequence of a plurality of sensor nodes; (S205) Transmitting a first packet from a plurality of sensor nodes to a master node; (S207) Receiving the packet in the master node; (S209) Confirming the packet in the master node; (S211) Normal packet?; (S213) Generating a response packet displaying a node ID according to the sequence of a plurality of sensor nodes corresponding to the ACK/NAK values and transmitting to a plurality of sensor nodes; (S215) Block packet?; (S217) Generating a response packet displaying a node ID according to the sequence of a plurality of sensor nodes corresponding to a Block value; (S219) Receiving the response packet from a plurality of sensor nodes; (S221) Confirming the transmission success of the packet