Channel Based Beamforming for Wireless User Equipment
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Solution Overview
Problem
Current user equipment (UE) relies heavily on digital beamforming for improved coverage, which increases power consumption due to the need for multiple radio-frequency chains, making analog beamforming a desirable alternative for efficient communication.
Innovation Solution
The UE employs channel-based beamforming using a predefined matrix to determine analog beams for receiving downlink communications, optimizing the use of antenna elements and reducing power consumption by applying different sequences to beam management reference signals and constructing a combined channel for eigenvector-based beamforming weights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If digital beamforming is used to improve coverage, then communication coverage is enhanced, but power consumption increases due to multiple radio-frequency chains
Solution Approach 1:
The patent replaces digital beamforming (which requires multiple RF chains and high power consumption) with analog beamforming using a single RF chain and phase shifters. The phase shifters adjust the phase of signals at the antenna elements to achieve beamforming effects, substituting the mechanical/electronic complexity of multiple RF chains with a simpler analog phase adjustment mechanism.
Solution Approach 2:
The patent changes the operating parameters by using a single RF chain with adjustable phase shifters instead of multiple fixed RF chains. The phase shift values are dynamically adjusted to steer beams in different directions, achieving coverage enhancement while maintaining low power consumption through parameter optimization rather than hardware multiplication.
2Use of energy by moving object
If analog beamforming is used to reduce power consumption, then energy efficiency is improved, but beamforming precision and adaptability may be reduced
Solution Approach 1:
The patent introduces dynamic adaptability to analog beamforming by allowing the phase shifters to be adjusted in real-time based on channel conditions. The system can dynamically change phase shift values to track moving users or adapt to changing environments, maintaining beamforming precision despite the simpler analog architecture.
Solution Approach 2:
The patent implements feedback mechanisms where the system measures channel quality and adjusts phase shift values accordingly. This closed-loop control ensures that the analog beamforming maintains high precision by continuously optimizing beam directions and widths based on actual channel conditions, compensating for the coarser control granularity of analog phase shifters.
Data Source
AI summary
The present application relates to devices and components including apparatus, systems, and methods to provide channel-based beamforming in wireless communication systems.