Network device and method for efficient data transmission/reception using transport layer in mobile ad-hoc network

PURPOSE: An effective data transceiving method using a transport layer in a mobile ad hoc network and a network device using the method are provided to reduce the number of ACK packets for a data packet under a mobile ad hoc network environment, thereby increasing the utilization of a TCP link and improving the performance of a transport layer protocol. CONSTITUTION: If a receiving host receives a packet from a transmission host(S500), the receiving host decides whether packet loss for transmitted packets occurs(S510). If so, the receiving host transmits an ACK signal to the transmission host(S540). If the packet loss does not occur, the receiving host checks whether a flag for requesting an ACK request is set in a header of the received packet(S520). If so, the receiving host sends the ACK signal to the transmission host(S540). If the flat is not set, the receiving host transmits the received packet to a receiving application(S530).