Method and apparatus for transmitting packet in wireless communication system

An apparatus for transmitting a packet in a wireless communication system, the apparatus comprising:

• a packet classifying unit configured to determine whether the packet is a response packet;
• a transmission unit configured to transmit the packet;
• and
• a control unit configured to control the transmission unit to transmit the packet with a higher channel access opportunity than another packet transmission apparatus of the wireless communication system;
• if the packet is the response packet,
• wherein the packet classifying unit is configured to analyze the history of a first number of packets consecutively transmitted from a source to a destination and the history of a second number of packets consecutively transmitted from the destination to the source and determine the second number of packets to be response packets, the second number of packets being consecutively transmitted from the destination to the source after the first number of packets are consecutively transmitted from the source to the destination.