Transmission power control method for a wireless communication system
AssigneeHitachi, Ltd.
InventorsTakashi Yano, Satoshi Tamaki
Life of this patent
Estimating the term…
Abstract
Transmission power relative to a propagation path having a variation in gain is controlled to increase communication channel capacity, and a data rate is controlled in accordance with the variation of the increased communication channel capacity. In order to increase the communication channel capacity, the transmission power is determined so that the sum of noise power (=received noise power/propagation path gain) converted into one at a transmitter and the transmission power becomes constant. As a result, contrary to the background art, the transmission power is controlled to be reduced when the propagation path gain decreases and to be increased when the propagation path gain increases.
Claims8
An information processing device comprising:
- a unit configured to generate a first pilot signal for measuring a channel gain;
- a unit configured to receive an input of control information generated based on the channel gain and transmitted by a base station;
- and
- a unit configured to set a transmit power for a second pilot signal and a data signal transmission to the base station based on the control information,
- wherein the transmit power for the first pilot signal is not controlled by the control information.
An information processing device comprising:
- a unit configured to generate a first pilot signal for measuring an equivalent noise power;
- a unit configured to receive an input of control information generated based on the equivalent noise power and transmitted by a base station;
- and
- a unit configured to set a transmit power for a second pilot signal and a data signal transmission to the base station based on the control information,
- wherein the transmit power for the first pilot signal is not controlled by the control information.
Dependencies are inferred from the claim text.