Adaptive Beamforming Gain Control for Wireless Systems
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in beamforming due to fixed beamforming gains, which lead to high overhead in beam training procedures, especially when mobility is involved, and do not effectively adapt to changing communication environments.
Innovation Solution
The system controls adaptive beamforming gain by adjusting beam width, allowing for increased beamforming gain without changing the direction of the beam, using phase combinations and precoding matrices to optimize reception power, and dynamically adjusting beamforming gains based on signal quality and environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fixed beamforming gain is used in beam training, then beam direction matching can be achieved, but overhead increases especially when mobility is involved
Solution Approach 1:
The patent applies dynamics by transitioning from fixed beamforming gain to adaptive beamforming gain that can be dynamically adjusted based on signal quality measurements. The system continuously adapts the beamforming gain value rather than using a predetermined fixed value, allowing the beam training process to respond to changing channel conditions and mobility scenarios, thereby reducing overhead while maintaining matching accuracy.
Solution Approach 2:
The patent changes the parameter of beamforming gain from a fixed value to an adaptive value that is determined through measurement and adjustment. The system measures signal quality and uses this information to adjust the beamforming gain parameter dynamically, enabling more efficient beam training with reduced overhead while maintaining precise direction matching.
2Reliability
If beamforming gain is increased to improve reception signal quality, then signal quality improves, but system complexity increases due to need for adaptive control
Solution Approach 1:
The patent implements feedback by measuring the signal quality of the received signal and using this measurement to adjust the beamforming gain. The system creates a closed-loop control where the output (signal quality) is fed back to adjust the input parameters (beamforming gain), enabling automatic optimization of reception quality without manual intervention or complex external control systems.
Solution Approach 2:
The system performs self-service by autonomously determining and adjusting its own beamforming gain based on measured signal quality. The receiving device uses its own measurements to control its transmission parameters, eliminating the need for complex external coordination or control infrastructure, thereby improving reliability while managing complexity through self-regulation.
3Power
If beam width is reduced to increase beamforming gain, then reception power increases, but coverage area decreases
Solution Approach 1:
The patent changes the beamforming gain parameter adaptively based on measured signal quality rather than using a fixed narrow beam configuration. By adjusting the gain value dynamically, the system can achieve high reception power when needed without permanently committing to a narrow beam width, thus maintaining the ability to cover larger areas when conditions require it while still achieving high power concentration when signal quality demands it.
Data Source
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AI summary
An apparatus and a method for controlling a beamforming gain in a wireless communication system are provided. The method includes determining whether to control a beamforming gain, controlling the beamforming gain via change of a beam width if it is determined to control the beamforming gain, and transmitting or receiving a signal according to the controlled beamforming gain.