FIELD: metering forward data transfer speed and power level in mobile communication systems.
SUBSTANCE: access terminal measures carrier-to-noise ratio of forward pilot-signal channel, evaluates forward data transfer speed by matching measured carrier-to-noise ratio with its reference value, sets up difference between measured carrier-to-noise ratio and its reference value as margin information, and transfers definite direct data transfer speed and margin information over reverse transmission channel. During reception of forward data transfer speed and margin information access network reduces transmission power level by power corresponding to margin information and executes forward data transfer at forward data transfer speed and reduced transmission power level.
EFFECT: reduced excess transmission power and noise, enhanced forward throughput of system.
42 cl, 10 dwg
