SYSTEM AND METHOD FOR KEEP-ALIVE COMMUNICATION

PURPOSE: A keepalive communication system and a communication method thereof are provided to prevent network overload caused by unnecessarily frequent keepalive message transmission by determining an optimal period of keepalive in currently accessed communication path by a client. CONSTITUTION: A client(100) includes a keepalive transmission module(110), a keepalive frequency increase module(120) and a keepalive frequency decrease module(130). The keepalive transmission module transmits a keepalive message every keepalive frequency. When a keepalive message is transmitted, the keepalive frequency increase module increases the keepalive frequency. When a keepalive message is failed to be transmitted due to application of the keepalive frequency increased by the keepalive frequency increase module, the keepalive decrease module decreases the keepalive frequency. [Reference numerals] (100) Client; (110) Keepalive transmission module; (120) Keepalive frequency increase module; (130) Keepalive frequency decrease module; (140) Keepalive frequency retention module; (150) Reply reception module; (160) Successful transmission determination module