In a cellular mobile communications network a mobile station is capable of receiving
a downlink signal from each of a plurality of base stations and transmitting an
uplink signal to the plurality of base stations through a wireless channel. A transmission
property of the downlink signals from the plurality of base stations to the mobile
station is measured, and decided, in dependence upon the measure of the transmission
property, a preferred base station transmitting the downlink signal with a preferred
transmission property among the plurality of the base stations. The mobile station
includes, in the uplink signal, data indicating the preferred base station(s) for
transmitting the subsequent downlink signal to the mobile station. The base stations
receiving the uplink signal identify from the data the preferred based station(s)
and only the base station(s) identified as the preferred base station(s) transmits
a subsequent downlink signal to the mobile station. Interference in such a cellular
mobile telecommunications network can therefore be reduced.