Dynamic Virtual Antenna Array Configuration for 3D Beamforming
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Solution Overview
Problem
Current antenna array designs fail to effectively adapt to the 3D and time-varying characteristics of user equipment (UE) distribution in real-world radio communications, limiting the efficiency of 3D beamforming and communication performance.
Innovation Solution
A dynamic antenna array configuration method that transforms a physical antenna array into a virtual antenna array based on time-varying baseband channel statistics, allowing for adaptive matching of azimuth and elevation spreads, and enabling the same beamforming algorithm to be applied for both 2D and 3D scenarios by dynamically selecting antenna mapping patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed antenna array configuration is used, then the device complexity is reduced, but the adaptability to 3D and time-varying UE distribution characteristics deteriorates
Solution Approach 1:
The patent implements dynamic antenna array configuration by enabling the base station to adaptively adjust the mapping pattern between physical antenna elements and virtual antenna ports based on time-varying channel conditions and UE distribution characteristics. This allows the system to transition from a static to a dynamic configuration, improving adaptability to 3D spatial variations while maintaining manageable complexity through algorithmic control.
Solution Approach 2:
The patent changes the mapping parameters between physical antenna elements and virtual antenna ports dynamically. By adjusting the mapping pattern based on channel statistics and UE distribution, the system can optimize the virtual antenna array configuration for different 3D spatial scenarios without requiring physical reconfiguration of the antenna hardware, thus improving adaptability while controlling complexity.
2Productivity
If 3D beamforming is implemented with accurate UE distribution matching, then the communication efficiency is improved, but the signal processing complexity increases
Solution Approach 1:
The patent creates a virtual antenna array that replicates the essential spatial characteristics of the physical antenna array in a simplified mathematical model. By working with virtual antenna ports rather than directly processing all physical antenna elements, the system achieves 3D beamforming with reduced computational complexity while maintaining communication efficiency through the virtual representation of the antenna array.
Solution Approach 2:
The patent segments the complex task of 3D beamforming into manageable components: channel estimation, channel statistics analysis, mapping pattern selection, and beamforming weight calculation. This segmentation allows each component to be optimized independently, reducing overall signal processing complexity while achieving accurate UE distribution matching and improved communication efficiency.
3Measurement precision
If dynamic mapping pattern selection is performed, then the spatial resolution is optimized, but the baseband processing overhead increases
Solution Approach 1:
The patent performs preliminary analysis of channel statistics and UE distribution characteristics to pre-determine optimal mapping patterns. By anticipating the spatial resolution requirements based on historical channel data and UE distribution trends, the system can prepare appropriate mapping configurations in advance, reducing the real-time baseband processing overhead while maintaining optimized spatial resolution.
Solution Approach 2:
The patent implements feedback mechanisms where channel estimation results and channel statistics are continuously monitored to dynamically adjust the mapping pattern selection. This feedback loop enables the system to optimize spatial resolution adaptively while managing baseband processing time efficiently by only performing detailed processing when channel conditions or UE distribution changes warrant a mapping pattern update.
Data Source
AI summary
A method (40) of antenna array dynamic configuration for 3-Dimension beamforming in wireless network is provided, comprising: determining (41) dynamically a mapping pattern for transforming a physical antenna array into a virtual antenna array based on time-varying downlink or uplink baseband channel statistics, from a set of candidate mapping patterns; and configuring (42) the physical antenna array as different virtual antenna arrays according to the dynamically determined mapping pattern. The corresponding apparatus, antenna array and wireless base station system are also provided. These are used to improve radio transmission bandwidth communication efficiency.