Patent ID: 6445924
Filing Date: 2002-09-03
Classification: H04W

Abstract:
A method of implementing handovers based on the load situation of a base transceiver station and handovers based on signal quality in a mobile communications system which includes at least mobile stations, base transceiver stations, base station controllers having information about the load structure s of the base transceiver stations, and mobile services switching centers, the method comprising:performing measurements by mobile stations in connection with a base transceiver station of a signal strength of neighboring base transceiver stations, and reporting the results of the measurements to the connected base transceiver station; relaying, by the base transceiver station, the measurement reports of the mobile stations to a base station controller; performing a handover to a channel in the base transceiver station offering better signal quality when the signal quality meets predetermined first criteria to achieve a better radio channel quality; performing handovers, intended to reduce the load of the base transceiver station in the system, from the base transceiver station to neighboring base transceiver stations; storing in the base station controller second criteria information, the meeting of which indicates that an attempt must be made to reduce the load of the base transceiver station; performing a check by the base station controller to determine if the second criteria information has been met; and in response to meeting the second criteria information, changing said first criteria by the base station controller in order to direct a part of the load of the base transceiver station to neighboring base transceiver stations.