A wireless communication system including: a wireless terminal configured to: establish each of at least one session between the wireless terminal and each of at least one server via a wireless communication with a wireless base station, and transmit each of at least one specified signal for maintaining the established at least one session using a periodic radio resource allocated to the wireless terminal, and a control apparatus including a processor configured to: obtain each of at least one time-out time set for each of the at least one session, determine a resource periodicity of the periodic radio resource based on the shortest time-out time among the at least one time-out time, and determine each of at least one signal periodicity for transmitting each of the at least one specified signal based on the determined resource periodicity.