Patent ID: 6947749

Claim:
An apparatus for increasing a cell capacity in a mobile communication system using an adaptive sectorization, said mobile communication system including a base station system having a plurality of sectors, said base station system including a transceiver for performing a variety of functions associated with transmission/reception of data, said transceiver including a radio frequency (RF) controller, said apparatus comprising: an adaptive sector unit for determining a user distribution of each of said sectors on the basis of a received signal strength indicator (RSSI) of each of said sectors from said RF controller, for, in a forward link, receiving RF signals of two forward paths for each of said sectors from said transceiver, switching paths corresponding to variable beams of each of said sectors from one of said sectors with a highest one of the user distributions to another one of said sectors with a lowest one of the user distributions in consideration of the respective user distributions of said sectors to generate beam signals of m forward paths for each of said sectors, and outputting the generated beam signals, and for, in a reverse link, receiving beam signals of m reverse paths, containing y fixed beam paths, for each of said sectors, mixing the received beam signals into ones of two reverse paths and outputting the resulting signals to said transceiver; an analog beam former for, in said forward link, receiving said beam signals of said m forward paths for each of said sectors from said adaptive sector unit, converting the received beam signals into antenna signals of n forward paths for each of said sectors to form a multibeam of fixed beams and variable beams for each of said sectors, and outputting the resulting antenna signals, and for, in said reverse link, receiving antenna signals of n reverse paths for each of said sectors, converting the received antenna signals into said beam signals of said m reverse paths and outputting the resulting beam signals to said adaptive sector unit; a power amplifier for power-amplifying said antenna signals of said n forward paths for each of said sectors from said analog beam former and outputting the resulting signals; and a front-end unit for, in said forward link, receiving n-path antenna signals of each of said sectors from said power amplifier and transmitting the received antenna signals through λ/3 antennas for each of said sectors, and for, in said reverse link, receiving n-path antenna signals from said λ/3 antennas for each of said sectors, performing noise removal and filtering functions with respect to the received antenna signals and outputting the resulting signals to said analog beam former over said n reverse paths for each of said sectors.