Base Station Power Control for Interference Mitigation
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Solution Overview
Problem
Existing base station transmission power settings only consider coverage range and user terminal feedback, leading to high interference with neighboring base stations, which degrades communication quality.
Innovation Solution
Implement a power control method that determines and adjusts transmission power based on interference thresholds, using pilot signals and spatial loss analysis to minimize interference on neighboring base stations, employing beam-forming techniques to optimize signal strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the base station transmission power is increased to extend coverage range, then the coverage rate is improved, but the interference strength on neighboring base station terminals increases
Solution Approach 1:
The patent applies local quality by differentiating transmission power settings for different spatial directions. The base station identifies terminals belonging to neighboring base stations and applies targeted power reduction specifically toward those directions, while maintaining normal power levels in other directions. This spatially-selective power control reduces interference to neighboring cells without compromising overall coverage range.
Solution Approach 2:
The patent implements dynamic power adjustment by continuously monitoring terminal feedback and interference conditions. The base station dynamically modifies transmission power based on real-time channel conditions, terminal locations, and interference measurements. This dynamic control allows the system to adapt power levels to current conditions, optimizing the balance between coverage and interference mitigation.
2Power
If the base station transmission power is increased to improve signal strength, then the communication coverage is extended, but the communication quality of neighboring base station terminals deteriorates
Solution Approach 1:
The patent applies local quality by differentiating transmission power settings for different spatial directions. The base station identifies terminals belonging to neighboring base stations and applies targeted power reduction specifically toward those directions, while maintaining normal power levels in other directions. This spatially-selective power control reduces interference to neighboring cells without compromising overall coverage range.
Solution Approach 2:
The patent implements feedback mechanisms where terminals report channel quality indicators and the base station adjusts power accordingly. The system continuously monitors communication quality metrics and uses this feedback to fine-tune transmission power levels, ensuring that signal strength remains sufficient for coverage while interference to neighboring cells is kept below harmful thresholds.
3Area of stationary object
If the base station transmits at high power to ensure coverage, then the signal reaches distant terminals, but interference threshold is exceeded causing communication failure
Solution Approach 1:
The patent applies local quality by differentiating transmission power settings for different spatial directions. The base station identifies terminals belonging to neighboring base stations and applies targeted power reduction specifically toward those directions, while maintaining normal power levels in other directions. This spatially-selective power control reduces interference to neighboring cells without compromising overall coverage range.
Solution Approach 2:
The patent implements preliminary action by proactively identifying potential interference issues before they cause communication failures. The base station pre-calculates interference thresholds and adjusts power levels in advance based on predicted terminal locations and channel conditions. This preventive approach ensures that interference thresholds are not exceeded while maintaining adequate coverage.
Data Source
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AI summary
Disclosed are a base station, a terminal and power control methods thereof, and the power control method for a base station, when the base station transmits information to a user terminal, includes: a first transmission power at which the data information is transmitted to the user terminal is acquired; a first strength of data interference on a terminal attributed to a neighboring base station is determined based on the first transmission power; it is determined whether a difference value between the first strength of the data interference and an interference threshold is larger than 0 to acquire a determination result; and if the determination result is larger than 0, the first transmission power is lowered to a second transmission power so that when the data information is transmitted at the second transmission power, a second strength of the data interference on the terminal attributed to the neighboring base station does not exceed the interference threshold, thereby solving the technical problem in the prior art that there is too excessive interference on other terminals when a base station transmits data signals.