Uplink Data Transmission Power Control via TPMI

The patent implements dynamic power adjustment by configuring the terminal with full transmission power capability while allowing adaptive power selection based on channel conditions, data priority, and terminal capability. The base station dynamically controls the power level through RRC signaling and DCI indicators, enabling the system to switch between high-power mode for critical data and lower-power mode for routine traffic, thus resolving the contradiction between transmission performance and energy consumption.

The patent changes the power parameter from fixed to variable by introducing multiple power configuration options (full power, partial power, dynamic power). The terminal capability indicator allows the base station to select appropriate power parameters based on terminal conditions, and the DCI field provides fine-grained power adjustment. This parameter flexibility enables optimization of the balance between transmission speed and energy consumption.

The patent segments the capability indication into two parts: a terminal capability indicator (TCI) that reports supported TPMI configurations, and a base station configuration that selects appropriate TPMI based on the TCI. This segmentation allows the terminal to indicate its capabilities without implementing complex configuration logic, while the base station handles the complex selection and configuration tasks, thus reducing terminal complexity while maintaining adaptability.

The terminal capability indicator acts as an intermediary between terminal hardware capabilities and base station configuration decisions. Instead of the terminal directly implementing complex TPMI selection logic, the TCI provides a simplified interface that conveys capability information to the base station, which then makes the configuration decisions. This intermediary approach reduces terminal complexity while preserving transmission adaptability.