Packet transmission method and apparatus of mobile terminal

A method and an apparatus for transmitting a packet used in establishing or maintaining a connection with a server are provided. The method includes determining, when a current time is a packet transmission of at least one network service application of the mobile terminal, whether at least one other network service application having an adjustable packet transmission schedule with a packet transmission after the current time exists, adjusting, when the at least one other network service application exists, the adjustable packet transmission schedule to synchronize the packet transmission occasions of the at least one network service application with the at least one other network service application, and simultaneously transmitting a packet of the network service application having the packet transmission occasion at the current time and a packet of the at least one other network service application of which packet transmission schedule is adjusted.