Mobility-Adaptive Beam Width Control for Antenna Alignment
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Solution Overview
Problem
In high-frequency wireless communication systems, such as 5G, beamforming is used to mitigate radio propagation loss, but existing methods struggle to maintain optimal beam alignment with mobile devices, leading to unintended beam steering and reduced radio signal quality due to changes in device mobility.
Innovation Solution
An electronic device controls its beam width based on mobility information, adjusting the number of operating antenna elements and power ratios to maintain optimal beam alignment and signal quality, even during movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming is used to mitigate radio propagation loss, then signal quality is improved, but beam alignment becomes unstable during device movement
Solution Approach 1:
The patent applies dynamics by making the beamforming configuration adaptive rather than static. The system dynamically adjusts beam parameters (width, direction, number of antenna elements) based on real-time mobility detection. When movement is detected via sensor data (accelerometer, gyroscope), the system transitions from a fixed beam configuration to a dynamic one that can track and maintain alignment with the base station, thus resolving the contradiction between achieving high signal quality through beamforming and maintaining beam alignment stability during movement.
2Reliability
If beam width is reduced to improve signal focus, then signal quality is improved, but beam steering accuracy deteriorates during motion
Solution Approach 1:
The system dynamically adjusts beam width based on detected mobility state. During stationary conditions, a narrow beam width is used to maximize signal focus and quality. When motion is detected, the system transitions to a wider beam width that provides a broader coverage area, compensating for the device's movement and maintaining beam steering accuracy. This dynamic adaptation resolves the contradiction by allowing the beam width to be optimized for different operational states rather than being fixed.
Solution Approach 2:
The patent changes the beamforming parameters (width, direction, antenna element activation) based on mobility conditions. The system monitors sensor data and adjusts beam parameters accordingly - using narrow, focused beams when stationary and wider, more robust beams when moving. This parameter adaptation allows the system to maintain both signal quality and steering accuracy across different mobility states.
3Reliability
If orientation compensation is applied to maintain beam direction, then beam alignment is improved for stationary devices, but alignment deteriorates during device movement
Solution Approach 1:
The system transitions from static orientation compensation (designed for stationary devices) to dynamic beam tracking that adapts to mobility. When movement is detected, the system activates mobility-adaptive beam tracking that uses sensor data to predict and compensate for position changes, maintaining alignment with the base station. This dynamic approach resolves the contradiction by making the beam alignment system adaptable to both stationary and mobile scenarios.
Solution Approach 2:
The system implements feedback loops that continuously monitor device motion via sensors and adjust beamforming parameters in response. The feedback mechanism allows the system to detect when the device is moving and switch from stationary-oriented compensation to mobility-adaptive tracking, maintaining beam alignment across different operational states. This feedback-driven adaptation resolves the contradiction between optimized stationary alignment and mobility versatility.
Data Source
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AI summary
An electronic device comprises a first communication circuit configured to transmit at least one radio frequency (RF) signal, at least one antenna structure, electrically coupled to the first communication circuit, and including a plurality of antenna elements, at least one processor operatively coupled to the first communication circuit, and memory operatively coupled to the at least one processor. The memory stores instructions that, when executed by the at least one processor, causes the processor to perform a plurality of operation. The plurality of operations comprises identifying mobility information of the electronic device, identifying a beam width of a beam formed by at least a part of the plurality of antenna elements based on at least part of the mobility information of the electronic device, the beam being used to search for or communicate with an external electronic device, and forming the beam having the identified beam width.