MULTI-SECTOR BASE STATION APPARATUS IN MOBILE COMMUNICATION SYSTEM

摘要

PURPOSE: A multi-sector base station apparatus in the mobile communication system is provided to increase the efficiency of call channels and to reduce channel interference by embodying a 7FA(Frequency Allocation) digital unit using a 1FA digital unit. CONSTITUTION: A base station modem unit(110) is comprised of a plurality of base station modems(110-1-110-n). A central processing unit(120) generates sector conversion data according to sector conversion signals outputted from a base station controller. A sector conversion control unit(130) generates control signals for sector conversion according to the sector conversion data. A sector conversion unit(140) transfers the sectors of the transmitting signals obtained from the base station modems(110-1-110-n) and the received signals transmitted from a mobile station. A base station modem output digital combination unit(150) is composed of a plurality of combiners(151-157) which combine each of the FA transmitting signals obtained from the sector conversion unit(140) by FA and output them. An intermediate frequency modulation unit(160) modulates transmitting data by sectors outputted from the base station modem output digital combination unit(150) into intermediate frequency signals. A radio frequency modulation unit(170) modulates the intermediate frequency signals into radio frequency signals and outputs them to antennas(ANT1,ANT2,ANT3). A radio frequency demodulation unit(180) demodulates the radio frequency signals into the original signals. An intermediate frequency demodulation unit(190) extracts the intermediate frequency signals from the demodulated radio frequency signals and transports them to the base station modem unit(110).