Wireless Communication Apparatus Transmission Power Control
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Solution Overview
Problem
In a carrier aggregation system, independent transmission power control for multiple component carriers increases control data, potentially reducing throughput.
Innovation Solution
A wireless communication apparatus that selects and uses different calculation formulas for transmission power control based on the type and access method of each component carrier, reducing the amount of control data required between transmitter and receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If independent transmission power control is performed for each component carrier, then transmission quality is maintained, but control data increases
Solution Approach 1:
The patent combines transmission power control for multiple component carriers into a unified control mechanism. Instead of independently controlling power for each component carrier, the system performs joint power control that considers all component carriers simultaneously, thereby reducing the amount of control data while maintaining overall transmission quality.
Solution Approach 2:
The invention creates a universal transmission power control formula that can be applied across different component carriers with different access methods. This multi-functional control mechanism handles various scenarios (different access methods, different carrier types) through a single unified approach, reducing the need for separate control data for each component carrier.
2Measurement precision
If different calculation formulas are used for different component carriers, then power control accuracy is improved, but system complexity increases
Solution Approach 1:
The patent applies local quality by selecting specific calculation formulas based on the access method of each component carrier. Different formulas are used for different access methods (e.g., licensed access vs. unlicensed access), allowing optimized power control accuracy for each local condition while maintaining overall system manageability through standardized selection criteria.
Solution Approach 2:
The invention changes the parameter of calculation formula selection based on access method characteristics. By dynamically selecting appropriate formulas according to access method parameters, the system achieves accurate power control for diverse component carriers without requiring complex manual configuration or multiple independent control systems.
Data Source
AI summary
In a case where transmission power control is performed for a plurality of CCs in CA, information transmitted between a transmitter and a receiver in terms of the transmission power control is reduced. A wireless communication apparatus according to the present invention is a wireless communication apparatus configured to perform communication using at least two or more types of component carriers, including transmission power control units 106-1 to 106-3 configured to select one calculation formula from a plurality of different calculation formulas depending on a type of the component carrier and calculate transmission power of the component carrier, and an RF unit 107 configured to perform communication using the component carrier based on the calculated transmission power.