Base Station Transmission Power Control for Interference Management
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Solution Overview
Problem
Existing transmission power control methods in terminal apparatuses are not universally effective due to varying environmental conditions, leading to inconsistent communication quality and interference issues.
Innovation Solution
A base station apparatus determines the appropriate transmission power control method for each connected terminal apparatus based on interference conditions, using a first method with high interference resistance for terminals experiencing communication quality deterioration and a second method based on received power for those not strongly influenced by interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single transmission power control method is applied to all terminal apparatuses, then the system complexity is reduced, but communication quality deteriorates for terminals in varying environments
Solution Approach 1:
The patent segments the terminal apparatuses into different groups based on their environmental conditions and interference characteristics. The base station determines whether each terminal satisfies a specific condition regarding interference to up-link signals, and applies different transmission power control methods accordingly. This segmentation allows the system to maintain appropriate communication quality for each terminal while managing overall system complexity.
Solution Approach 2:
The patent implements a dynamic transmission power control approach where the base station continuously determines whether each terminal satisfies the interference condition and adjusts the control method accordingly. Terminals may transition between different control methods as their environmental conditions change, allowing the system to adapt to varying communication scenarios while maintaining manageable complexity through automated determination.
2Reliability
If transmission power control is optimized for each terminal apparatus, then communication quality improves, but the base station processing complexity increases
Solution Approach 1:
The patent changes the control parameter from a fixed single method for all terminals to a conditional parameter-based approach. The base station determines whether each terminal satisfies a specific condition regarding interference, and this determination result serves as a parameter that selects between different control methods. This parameter-based approach enables optimized control for each terminal while keeping the base station processing complexity manageable through clear decision criteria.
3Reliability
If a first transmission power control method with high interference resistance is applied to terminals experiencing interference, then communication quality improves, but interference to other apparatuses may increase
Solution Approach 1:
The patent implements a feedback mechanism where the base station determines whether each terminal satisfies a condition regarding interference to up-link signals. This determination is based on feedback information about the terminal's communication environment and interference characteristics. By using this feedback to select appropriate control methods, the system improves communication quality for affected terminals while preventing excessive interference to other apparatuses through informed decision-making.
Data Source
AI summary
A base station apparatus determines whether or not, with respect to a connected terminal apparatus, a condition regarding interference to an up-link signal transmitted from the terminal apparatus to the base station apparatus is satisfied; and executes transmission power control using a first method with respect to the terminal apparatus that has been determined to satisfy the condition.