Patent ID: 6160800
Filing Date: 2000-12-12
Classification: H04B,Y02D

Abstract:
A time division multiple access (TDMA) communicating method comprising the steps of:performing a time division multiple access for a one-point-to-multi-point communication between a base station and a plurality of subscriber stations as outdoor units with radio frequencies corresponding to zones;transmitting, from the subscriber stations, TDMA signals with time slots of a common TDMA synchronous frame by each of the subscriber stations in the outdoor units in such a manner that the TDMA signals of the subscriber stations do not overlap;receiving a plurality of TDMA signals with different radio frequencies transmitted by each of the subscriber stations in the outdoor units said receiving step being performed by a plurality of reception units;converting, in the base station, the TDMA signals of the subscriber stations into signals with a same frequency, said converting step being performed by a plurality of converters;combining the converted signals so as not to overlap the TDMA signals, said combining step being performed by a combining unit in the base station;demodulating the combined signal, said demodulating step performed by a demodulating circuit in the base station; andobtaining information signals of the subscriber stations from the demodulating signal by a TDMA control circuit on the base station.