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METHOD FOR CARRYING OUT A BLIND HANDOVER IN AN INTERFREQUENCY HANDOVER IN MOBILE COMMUNICATION SYSTEMS
METHOD FOR CARRYING OUT A BLIND HANDOVER IN AN INTERFREQUENCY HANDOVER IN MOBILE COMMUNICATION SYSTEMS
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机译:在移动通信系统中进行频率切换的盲切换方法
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摘要
The invention relates to a method for carrying out a blind handover in an intersystem and interfrequency handover in mobile communication systems, whereby a mobile station is supplied by several base stations prior to the handover i.e. it can receive several other base stations in addition to the supplying base station. According to the invention, measurement of the propagation time of the signals received from the base station is carried out by the mobile station on the air interface. The measured propagation times are transmitted to one of the base stations. The location of the mobile station is determined using the transmitted propagation time measuring data by the mobile communication network. With the aid of a data base, at least one suitable base station for an intersystem or interfrequency handover is then selected using the determined location and the data necessary for a handover is transmitted to the mobile station from the selected base station. The mobile station can carry out the handover to the selected base station using said information.
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