Antenna Beam Width Configuration Using Tilted Cross-Polarized Beams
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Solution Overview
Problem
Current cross-polarized antennas in wireless communications lack versatile MIMO or beamforming functionality in the elevation dimension due to fixed down tilt angles, limiting their coverage and performance.
Innovation Solution
Implementing high-beam and low-beam transmission signals with different antenna tilts, beam-widths, and polarizations, including orthogonal polarizations and side-lobe suppression to enhance MIMO and beamforming capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed beam width is used for all PUCCH resources, then the configuration is simple, but it cannot adapt to different channel conditions and user requirements
Solution Approach 1:
The patent implements dynamic beam width configuration by introducing multiple beam width parameters (first beam width for first PUCCH resources, second beam width for second PUCCH resources) that can be adjusted based on different channel conditions and user requirements, transforming the static beam width into a dynamic parameter that adapts to varying operational needs
Solution Approach 2:
The patent changes the beam width parameter from a fixed value to multiple configurable values (first beam width and second beam width), allowing the system to select appropriate beam width parameters based on different PUCCH resource types, channel conditions, and coverage enhancement requirements
2Measurement precision
If a narrow beam width is used, then the beam precision is improved, but the coverage area is reduced
Solution Approach 1:
The patent applies different beam width characteristics to different PUCCH resource scenarios: narrow beam width (first beam width) is applied to scenarios requiring high precision and low interference, while wide beam width (second beam width) is applied to scenarios requiring extended coverage, making each beam configuration locally optimized for its specific use case
Solution Approach 2:
The system dynamically selects between narrow and wide beam widths based on the specific PUCCH resource configuration and channel conditions, allowing the beam width to adapt its precision-coverage tradeoff according to real-time operational requirements rather than being fixed
3Area of stationary object
If a wide beam width is used, then the coverage area is improved, but the beam precision is reduced
Solution Approach 1:
The patent applies wide beam width (second beam width) specifically to PUCCH resources that require extended coverage, while maintaining narrow beam width (first beam width) for resources that prioritize precision, ensuring that wide beams are used only where coverage is the primary requirement
4Adaptability or versatility
If separate beam widths are configured for different PUCCH resources, then the channel adaptation is improved, but the configuration complexity increases
Solution Approach 1:
The patent introduces configurable beam width parameters that can be adjusted based on channel conditions, allowing the system to optimize beam characteristics for different PUCCH resource types and channel environments while maintaining a structured parameter-based configuration approach
Data Source
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AI summary
Using high-beam and low-beam transmission signals that have different antenna tilts, different beam-widths, and different polarizations than one another may provide performance advantages in wireless networks. The high-beam transmission signal and the low-beam transmission signal may have orthogonal polarizations. For example, the high-beam transmission signal and the low-beam transmission signal may be linearly polarized signals having different electromagnetic field (E-field) polarization angles with respect to the y-axis, e.g., +/- forty-five degrees with respect to a vertically polarized wave. As another example, the high-beam transmission signal may be a vertically polarized signal, and the low-beam transmission signal may be a horizontally polarized signal, or vice-versa. In addition to having orthogonal polarizations, the low-beam transmission signal may have a greater antenna beam down-tilt angle, and a wider beam-width than the high-beam transmission signal.