Dynamic Broadcast Beam Weighting for Wireless Signal Coverage
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Solution Overview
Problem
In wireless communications systems, fixed broadcast beam weighted values fail to adapt to varying cell environments, leading to weak signal coverage due to obstacles, which limits the system's ability to optimize antenna directivity patterns effectively.
Innovation Solution
A method to determine a broadcast beam weighted value based on an angle path loss spectrum, where the beam angle power spectrum allocates higher transmit powers to directions with larger signal path losses, ensuring better coverage by dynamically adjusting the antenna weights in real-time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed broadcast beam weighted value is preset to form a fixed broadcast beam, then the system complexity is reduced and ease of operation is improved, but the adaptability to different cell environments deteriorates and signal coverage becomes weak in obstructed directions
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed broadcast beam weighted value to a dynamic determination method. The base station determines broadcast beam weighted values based on angle path loss spectra that reflect real-time cell environment characteristics, allowing the system to adapt to varying obstruction patterns and environmental conditions while maintaining operational simplicity through automated determination.
Solution Approach 2:
The patent changes the parameter of broadcast beam weighted values from fixed preset values to dynamically determined values based on angle path loss spectra. This parameter change enables the system to adapt to different cell environments by adjusting the weighted values according to measured or predicted path loss characteristics in different directions, thereby improving signal coverage in obstructed areas.
2Device complexity
If a fixed broadcast beam weighted value is used, then the device complexity is reduced, but the measurement precision of signal coverage in different directions deteriorates
Solution Approach 1:
The patent changes the broadcast beam weighted values from fixed parameters to dynamically determined parameters based on angle path loss spectra. This allows the system to achieve precise signal coverage measurement and optimization in different directions by adjusting the weighted values according to actual path loss characteristics, without significantly increasing device complexity since the determination can be performed through software processing.
3Productivity
If the broadcast beam is formed using preset fixed weighted values, then the system operates with low complexity, but the signal coverage in directions blocked by obstacles becomes weak
Solution Approach 1:
The patent changes the broadcast beam weighted values from fixed to dynamically determined values based on angle path loss spectra. This parameter change improves reliability by ensuring that the broadcast beam configuration matches the actual cell environment, providing sufficient signal coverage in all directions including those blocked by obstacles, while maintaining productivity through automated determination processes.
Solution Approach 2:
The patent implements feedback by using measured or predicted angle path loss spectra to determine the broadcast beam weighted values. The system continuously adapts to environmental changes by incorporating path loss information from different directions, ensuring reliable signal coverage while maintaining operational efficiency through automated feedback-driven adjustment.
Data Source
Figure 1
Figure 2
Figure 2.a~2.b
AI summary
Embodiments of this application disclose a method and an apparatus for determining a broadcast beam weighted value in a wireless communications system. The method in the embodiments of this application includes: obtaining an angle path loss spectrum of a target cell at a current moment, where the angle path loss spectrum includes signal path loss values of a target base station in the target cell in a plurality of directions; determining a beam angle power spectrum based on the angle path loss spectrum, where the beam angle power spectrum includes signal transmit powers of the target base station in the plurality of directions, and in the beam angle power spectrum, a signal transmit power in a direction with a relatively large signal path loss value in the angle path loss spectrum is relatively large; determining a broadcast beam weighted value based on the beam angle power spectrum; and forming a target broadcast beam based on the broadcast beam weighted value.