Abstract: The present invention relates to a method and system for performing a handover from a serving base station to a target base station.

Abstract: The present invention relates to a method of determining the position of a deep brain stimulation (DBS) electrode which finds the position of the DBS electrode with respect to a deep brain target region, by using a first volume data set containing information on the deep brain target region and a second volume data set containing information on the DBS electrode implanted toward the deep brain target region, and which includes: a first step of generating a subvolume of the deep brain target region from the first volume data set, and also generating a subvolume of the DBS electrode from the second volume data set; and a second step of overlapping and displaying the subvolume of the deep brain target region and the subvolume of the DBS electrode.

Abstract: A method for measuring a self-interference (SI) which occurs in a relay and controlling radio resources of a base station based on the measured SI, and a mobile telecommunication system using the same. The mobile telecommunication system includes a relay which calculates intensity of SI; and a base station which performs radio resource management based on the calculated SI intensity. The method for measuring SI includes calculating intensity of SI using a relay; and performing radio resource management at a base station based on the calculated SI intensity.

Abstract: A method of recognizing states and locations of user equipment in a network by using a random access (RA) channel at a base station without alteration of the conventional network environment or configurations of user equipment. A mobile communication system of an embodiment includes a first base station; and one or more second base stations having service regions smaller than a service region of the first base station. The first base station is operable to broadcast configuration information to the user equipment for connecting to at least one of the one or more second base stations. The user equipment is operable to transmit an uplink signal to at least one of the one or more second base stations in accordance with the configuration information received from the first base station, and at least one of the one or more second base stations is operable to transmit information on the user equipment that transmitted the uplink signal to the first base station after receiving the uplink signal.

Abstract: Cell search method in an asynchronous mobile communication network suitable for reducing a hardware complexity and a power consumption of a mobile terminal by improving a cell search method suggested to ETSI(European Telecommunications Standards Institute) presently, method including the steps of (a1) the user device obtaining a slot synchronization for every slot assigned to the first and second synchronization channels using the first synchronization signal transmitted from the base station, and detecting a position of an omitted synchronization code when there is the omitted synchronization code from a plurality of synchronization codes in the first synchronization signal, (b1) searching for a starting point of each frame assigned to the first and second synchronization channels and one base station group the base station is in use by using the second synchronization signal, and (c1) the user device determining a code for identifying the base station among the second codes used by the base station group fr