User Equipment Transmission Power Control via Base Station Instructions
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Solution Overview
Problem
Conventional wireless communication systems are limited by fixed maximum transmission powers for user equipment, which cannot be adjusted based on modulation methods, restricting flexibility and compliance with varying regulatory requirements.
Innovation Solution
A user equipment with a transmission unit and a control unit that adjusts maximum transmission power according to power class and modulation method, allowing for flexible power settings based on instructions from a base station, such as increasing power for Pi/2 BPSK with spectrum shaping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a predetermined maximum transmission power is assigned to a predetermined power class, then the transmission power is fixed and compliant with regulations, but the flexibility to adjust power according to modulation methods is lost
Solution Approach 1:
The patent introduces dynamic adjustability to the previously static power class system. The base station can now dynamically instruct the user equipment to adjust maximum transmission power based on modulation methods being used, transforming the fixed power class assignment into a flexible, condition-dependent power management system
Solution Approach 2:
The patent changes the power parameter from a fixed value assigned to power classes to a variable that can be adjusted based on modulation methods. The control unit modifies the maximum transmission power parameter according to instructions from the base station, allowing the system to adapt power levels to match the requirements of different modulation schemes
2Power
If the maximum transmission power is increased for specific modulation methods, then power efficiency and coverage are improved, but the risk of exceeding regulatory limits increases
Solution Approach 1:
The patent implements a feedback mechanism where the base station monitors the transmission conditions and sends instructions to the user equipment to adjust power levels accordingly. This closed-loop control ensures that power increases for specific modulation methods are authorized and tracked, maintaining regulatory compliance while optimizing performance
Solution Approach 2:
The base station acts as an intermediary between the user equipment and regulatory requirements. It receives information about modulation methods being used, determines appropriate power adjustments, and sends controlled instructions to the user equipment, ensuring that any power increases are authorized and compliant with regulations
Data Source
AI summary
A user equipment includes a transmission unit configured to transmit a signal; and a control unit configured to determine, according to a power class, a maximum transmission power for transmitting the signal. The control unit adjusts, according to an instruction from a base station apparatus, the maximum transmission power. The instruction includes information validating or invalidating adjustment of the maximum transmission power.