초록 ▼

The power transmitted by an r.f. transmitting and receiving station, such as a mobile station, to a fixed base station, is controlled as a function of power received by the mobile station to obtain a constant receiving power level in the fixed station despite variations in the relative location of t

The power transmitted by an r.f. transmitting and receiving station, such as a mobile station, to a fixed base station, is controlled as a function of power received by the mobile station to obtain a constant receiving power level in the fixed station despite variations in the relative location of the stations. The power received by the mobile station is measured and sampled at predetermined instants. At each predetermined instant, the power to be received by the mobile station at a following predetermined instant is estimated as a function of the measured power, to derive an estimated power. R.f. signal power transmitted by the mobile station is reduced between the successive instants in proportion to the estimated power.

대표청구항 ▼

A transmission power control device in a radio communication transmitting and receiving station, comprising: means for measuring power of a signal received by said station at predetermined instants, means for estimating at each predetermined instant a signal power which will be received by said stat

A transmission power control device in a radio communication transmitting and receiving station, comprising: means for measuring power of a signal received by said station at predetermined instants, means for estimating at each predetermined instant a signal power which will be received by said station at a next predetermined instant, as a function of said measured power, thereby producing an estimated power, said estimating means comprising subtractor means for computing a difference in said measured signal power received at a predetermined instant and the estimated power of the received and measured power, means for multiplying a power difference by a predetermined factor less than 1, thereby deriving a product, adder means for adding said product of said power difference and said factor to said estimated power of the received and measured power so as to establish said estimated power of the power which will be received and measured at the next instant, and means for memorizing said next instant estimated power during a time interval between the two instants, thereby applying it to said adder and subtractor means at said next instant, and means for reducing a signal power transmitted by said station between successive instants, in proportion to said estimated power.