Patent ID: 7453814

Claim:
A method of searching for information in a mobile communication system, comprising: determining if a target IP address is an effective address; if the target IP address is an effective address, determining if a packet call corresponding to the target IP address exists in a packet data protocol context database; if the target IP address does not exist in the packet data protocol (PDP) context database, setting a trigger flag for the target IP address; and performing at least one of a tracing or monitoring operation for the packet call of target IP address based on the set trigger flag, said method further comprising deactivating the tracing or monitoring operation after a predetermined period of time, said deactivating including: checking whether the tracing or monitoring operation is in an active state; and if the tracing or monitoring operation is in the active state, terminating activation and transmitting a result of the inactivation, wherein if the tracing or monitoring operation is in an inactive state, checking whether a trigger flag for tracing or monitoring the packet call of target IP address is set, and if the trigger flag is set removing the trigger flag and terminating the tracing or monitoring operation for the packet call of target IP address.