Adaptive Antenna Beam Control for Changing User Directions
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Solution Overview
Problem
Conventional antenna control devices face challenges in dynamically adjusting radiation patterns to suit varying wireless environments, especially in mobile systems with changing user distributions, leading to inefficient communication quality and the need for frequent pattern resets.
Innovation Solution
An autonomous antenna control device that includes a weight unit, an arrival direction detector, a distribution information calculator, a signal quality calculator, and a radiation pattern selector to dynamically set weight values for radiation patterns based on detected arrival directions and signal quality, allowing for adaptive radiation pattern generation across multiple areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional antenna control devices use fixed radiation patterns, then device complexity is reduced, but adaptability to changing wireless environments deteriorates
Solution Approach 1:
The patent implements dynamic radiation pattern adjustment by continuously monitoring arrival directions of reception signals and automatically updating weight values in response to changing environmental conditions. The system transitions from static pre-configured patterns to dynamic adaptive patterns that evolve with the wireless environment, resolving the contradiction between simplicity and adaptability.
Solution Approach 2:
The antenna control device performs autonomous adaptation by detecting arrival directions, calculating optimal weight values, and adjusting radiation patterns without external intervention. The system serves itself by automatically responding to environmental changes, eliminating the need for manual reconfiguration while maintaining adaptability.
2Measurement precision
If antenna control devices perform environmental inspection before operation, then radiation pattern accuracy is improved, but loss of time increases
Solution Approach 1:
The patent eliminates the need for preliminary environmental inspection by implementing continuous real-time monitoring of arrival directions. The system is prepared to detect and respond to environmental changes immediately upon operation, achieving both accuracy and time efficiency by removing the pre-operation inspection step entirely.
Solution Approach 2:
The system maintains continuous monitoring and adjustment of radiation patterns throughout operation, replacing discrete pre-operation inspection with ongoing adaptive optimization. This continuous action ensures pattern accuracy is maintained without requiring time-consuming initial environmental surveys.
3Reliability
If radiation patterns are frequently reset to adapt to user distribution changes, then communication quality is improved, but productivity decreases
Solution Approach 1:
The patent implements continuous feedback monitoring of arrival directions and automatic adjustment of weight values in response to detected changes. This closed-loop control maintains communication quality by adapting to user distribution changes without requiring manual intervention or system resets, thereby preserving productivity while ensuring reliability.
Data Source
AI summary
An antenna control device includes a weight unit in which weight values to be superimposed on transmission/reception signals are set for forming radiation patterns using a plurality of antennas and a weight synthesis unit that superposes the weight values on the transmission/reception signals. The antenna control device further includes an arrival direction detector that detects arrival directions of the reception signals, a distribution information calculator that calculates distribution information of the detected arrival directions, a signal quality calculator that calculates signal quality information of each of the radiation patterns, and a radiation pattern selector that selects a radiation pattern on the basis of the distribution information and signal quality information for the radiation patterns, and sets the weight values corresponding to the selected radiation pattern in the weight unit.