Small-Cell Base Station Power Adjustment for Interference Reduction
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Solution Overview
Problem
Small-cell base stations in wireless communication systems experience interference due to overlapping signal coverage, necessitating a dynamic power adjustment mechanism to reduce signal interference.
Innovation Solution
A control device and method that collect signal quality information from terminal devices, determine the number of interfered terminals for each small-cell base station, group them based on interference levels, and adjust power levels to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If small-cell base stations transmit signals via the same frequency bands to provide wider signal coverage, then signal coverage is improved, but signal interference between base stations increases
Solution Approach 1:
The patent applies dynamic power adjustment where base stations continuously monitor interference levels and adjust their transmission power in real-time. Base stations with higher interference levels reduce their power, while those with lower interference maintain higher power, creating a dynamic equilibrium that optimizes both coverage and interference management.
Solution Approach 2:
The patent changes the power parameter of base stations based on measured interference levels. By establishing a correspondence relationship between interference levels and power adjustments, the system dynamically modifies transmission power to resolve the contradiction between coverage and interference.
2Object-generated harmful factors
If power of small-cell base stations is dynamically adjusted to reduce interference, then signal interference is reduced, but system complexity increases
Solution Approach 1:
The patent implements a self-service mechanism where base stations autonomously monitor their own interference levels and adjust their power without external intervention. Each base station uses its own measurements to determine appropriate power levels, eliminating the need for complex centralized control systems.
Solution Approach 2:
The patent establishes a feedback loop where base stations continuously measure interference levels, compare them against threshold values, and adjust power accordingly. This closed-loop feedback mechanism simplifies control by using local measurements rather than requiring complex system-wide coordination.
3Device complexity
If power adjustment is performed without considering individual base station interference levels, then implementation is simplified, but signal quality for terminals suffering interference deteriorates
Solution Approach 1:
The patent applies local quality by tailoring power adjustment decisions to individual base stations based on their specific interference levels. Each base station's power is adjusted according to its local interference conditions rather than applying a uniform adjustment strategy, thereby improving signal quality for affected terminals while maintaining implementation simplicity through localized decision-making.
Data Source
AI summary
A control device and a control method for dynamically adjusting power of small-cell base stations are provided. The control device determines the number of interfered terminals of each small-cell base station according to signal quality information of terminal devices, divides the small-cell base stations into a plurality of groups, and adjusts the power of the small-cell base stations of each group in order.