| 摘要 |
PURPOSE: A multicast signal transmission power control method and a base station using the same are provided to reduce interference power with respect to a mobile station of other cell and a mobile station not receiving a multi-cast signal and to effectively utilize base station transmission power. CONSTITUTION: A mobile station(21) demodulates a multi-cast signal(4) received by a receiver(6) and outputs the multi-cast signal from a multi-cast signal output terminal(7). On the other hand, a reception power measurement unit(22) measures the received power and transmits the value to a base station(11) via a transmitter(23). The base station(11) gives the reception power value of the mobile station to a reception quality retrieval device(16) and a memory(13) stores the received power value by each mobile station. Then a minimum received power(Cmin)(18) is retrieved among a plurality of stored received power values, compared with a required reception power value(Cref)(15), a difference(Cref-Cmin) is given to a transmission power control unit(17) as an output of the reception quality retrieval device(16). The transmission power control unit(17) controls the transmission power in response to the received(Cref-Cmin). |
