Beam Locking via Inertial Sensing in Wireless Systems
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Solution Overview
Problem
In wireless communication systems, mobile user stations frequently experience beam direction misalignment with base stations due to movement, leading to deteriorated communication quality, which is difficult to manage with traditional beam training methods that require frequent and overhead-intensive control messages.
Innovation Solution
The implementation of motion recognition sensors to measure user station movement and adjust beam directions using calculated beam control parameters, enabling continuous beam locking and hybrid beamforming to maintain optimal communication quality without frequent system overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional beam training methods are used to maintain beam alignment, then beam direction accuracy is improved, but system overhead increases due to frequent control messages
Solution Approach 1:
The patent replaces the traditional beam training mechanism (which relies on control message exchanges) with an inertial sensing mechanism. Motion recognition sensors (accelerometers, gyroscopes) directly measure device movement and orientation changes, substituting the mechanical control message-based beam adjustment system with a sensor-based inertial measurement system that calculates beam control parameters without requiring frequent network communication.
Solution Approach 2:
The user station performs self-service beam alignment by using its own motion recognition sensors to detect movement and calculate beam control parameters autonomously. The device serves itself by generating beam adjustment commands based on inertial measurements, eliminating the need for continuous network-based beam training and reducing system overhead.
2Power
If narrow beam width is used to improve signal strength, then receive gain is improved, but serviceable area reduces
Solution Approach 1:
The patent implements dynamic beam tracking that adapts to user movement. When the user moves, the inertial sensors detect the motion and the system dynamically adjusts the beam direction to maintain alignment with the base station. This dynamic adjustment allows the system to use narrow beams for high gain while compensating for movement-induced misalignment, effectively maintaining both signal strength and serviceability.
Solution Approach 2:
The system employs feedback from motion recognition sensors to continuously monitor user movement and orientation changes. This feedback loop enables real-time beam direction adjustment, allowing the narrow beam to track the user's position and maintain optimal alignment with the base station, thereby preserving both high signal strength and extended serviceable area.
3Reliability
If frequent beam training is performed to maintain alignment during user movement, then beam locking reliability is improved, but communication efficiency deteriorates due to increased overhead
Solution Approach 1:
The patent substitutes the network-based beam training mechanism with a local inertial sensing system. Motion recognition sensors continuously track device movement and orientation, enabling the system to maintain beam locking reliability through local sensor data rather than frequent network-based training, thus preserving communication efficiency.
Solution Approach 2:
The system performs preliminary beam alignment using inertial sensors before communication quality deteriorates. By continuously monitoring motion and proactively adjusting beam direction based on predicted movement, the system maintains reliable beam locking without waiting for quality degradation that would trigger traditional retraining, thereby avoiding efficiency loss.
Data Source
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AI summary
To retain a beam direction of beamforming in a wireless communication system, an apparatus for the beamforming includes a detector for measuring change of at least one of a movement and a motion of the apparatus; and a processor for determining a beam control parameter for aligning a beam direction with a counterpart apparatus by compensating for the change of the beam direction according to at least one of the movement and the motion.