Patent ID: 8594042
Filing Date: 2013-11-26
Classification: H04W,Y02D

Abstract:
1. A handoff method for a terminal in an idle state in a mobile communication system, the handoff method comprising: searching for a pilot of a single base station of an active set and a pilot of at least one base station of a neighbor set; determining if, among the at least one base station of the neighbor set, there is a base station having pilot energy that is greater than that of the active set; if there is the base station having the pilot energy that is greater than that of the active set in the neighbor set, determining if a pseudo noise offset of the base station of the neighbor set is equal to that of a base station included in an active set list including previous base stations that have been active sets; if the pseudo noise offsets are equal, calculating a difference between a last time at which a previous base station functions as an active set prior to a current active set and a current time; and if the difference is greater than a threshold time, determining if a pilot energy of the active set is less than a threshold and performing a handoff to the base station of the neighbor set.