Patent ID: 8516127

Claim:
A method for maintaining connections between a terminal and a plurality of servers in a stand-by state in which the terminal is connected to the servers, comprising: synchronizing timers associated with respective ones of the connections to the plurality of servers by generating, by the terminal, timers for maintaining the connections to the plurality of servers; determining whether any one of the generated timer expires; simultaneously sending packets for connection maintenance notifications to all the servers having communication connections to the terminal when the timer expires, and determining whether data to be transmitted/received by the terminal exists when the timer does not expire; determining whether a remaining time until an expiration schedule of the timer is equal to or less than a preset RT time when the data to be transmitted/received exists; and simultaneously sending the packets for the connection maintenance notifications to all the servers having the communication connections to the terminal when the remaining time until the expiration schedule of the timer is equal to or less than the preset RT time.