Antenna Signal Link Gain Control for Varying Coupling Attenuation

The gain factor is changed from a static predetermined value to a dynamic variable that adapts to varying coupling attenuation conditions. The control unit continuously adjusts the gain factor based on detected antenna signal power and mobile radio terminal responses, enabling the system to adapt to changing operating states and coupling conditions while maintaining operational simplicity through automated control.

The gain factor adjustment is performed periodically at predetermined intervals rather than continuously or in real-time. This periodic adjustment approach allows the system to adapt to varying coupling attenuation while avoiding interference with the mobile radio terminal's power control operations, which occur at different time scales. The detection unit measures antenna signal power, and the control unit adjusts the gain factor only at these periodic intervals when the mobile radio terminal is not actively adjusting its transmit power.

The system uses the mobile radio terminal's own power control responses as the measurement basis for determining coupling attenuation. Instead of implementing complex external surveying equipment or procedures, the control unit leverages the existing power control mechanism of the mobile radio terminal. By detecting how the terminal's transmit power changes in response to gain factor adjustments, the system self-determines the coupling attenuation with sufficient precision without requiring additional complex measurement infrastructure.