Method and apparatus for supporting idle mode in mobile communication system

In the method of operation of a mobile communication system including a paging controller, comprising the steps of: determining the first base station to the paging controller of the terminal when the terminal enters the idle mode from the first base station included in the first paging zone with the terminal the first and the second base station to the second paging zone process, and the paging controller informs to the base station list and the paging controller the location update of the MS included in the case of performing a location update from the second base station included in the second paging zone when receiving a packet arrival notification from the old serving BS of the MS wherein the packet arriving first paging zone, and wherein the receiving process and the mobile station that the packet arrival notifications to inform the at least one base station included in the second paging zone and if the process of performing a network re-entry to the third base station 3 the base station comprises the step of forwarding a packet destined for the terminal from the old serving base station, using the process and wherein the tunnel a third base station is generated to create a tunnel to the previous serving base station and performing a binding update.