In a wireless communication system, a mobile terminal providing a web service receives information about a web page for a web service from a mobile terminal, receives at least one embedded object included in the web page from a web server, sets a Discontinuous Reception (DRX) interval for the mobile terminal based on a size of the at least one embedded object, transmits information about the set DRX interval to the mobile terminal, and transmits the at least one embedded object to the mobile terminal at a time the set DRX interval ends.