Terminal Beam Alignment via Rotation Sensor Feedback
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Solution Overview
Problem
In 5G NR systems, beamforming techniques face challenges in maintaining communication quality due to misalignment of transmission and reception beams caused by terminal movement or rotation, leading to rapid deterioration of communication quality and prolonged beam recovery times.
Innovation Solution
A method and terminal configuration that utilize sensors to detect rotation or movement, performing beam sweeping procedures to align transmission and reception beams, determining rotation or movement angles, and adjusting beams accordingly to maintain alignment and prevent quality deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If beamforming technique is used to increase propagation distance, then transmission distance is improved, but communication quality deteriorates rapidly when terminal moves or rotates
Solution Approach 1:
The system dynamically adjusts the reception beam based on detected terminal movement or rotation. The controller continuously monitors sensor data and updates the reception beam direction in real-time to track the transmission beam, ensuring communication quality is maintained despite terminal movement.
Solution Approach 2:
The system uses sensors to detect terminal orientation and movement, providing feedback to the controller. Based on this feedback, the controller adjusts the reception beam to maintain alignment with the transmission beam, creating a closed-loop system that preserves communication quality.
2Measurement precision
If beam sweeping procedure is performed to align beams, then beam alignment is improved, but time consumption increases when terminal moves or rotates
Solution Approach 1:
The system performs preliminary beam alignment through beam sweeping procedure to establish an initial aligned state. Once aligned, the system uses sensor-based prediction to anticipate beam misalignment before it occurs, allowing for proactive beam adjustment rather than reactive recovery.
Solution Approach 2:
Instead of performing repeated beam sweeping procedures when terminal moves, the system dynamically predicts the new beam direction based on sensor data and directly adjusts the reception beam, significantly reducing the time required to restore alignment compared to traditional beam sweeping recovery methods.
3Measurement precision
If traditional beam alignment method is used, then beam alignment is achieved, but communication quality deteriorates during terminal movement
Solution Approach 1:
The system continuously monitors terminal orientation using sensors and provides real-time feedback to the beam adjustment mechanism. This allows the reception beam to track the transmission beam dynamically, maintaining communication quality during terminal movement rather than relying on static pre-aligned configurations.
Solution Approach 2:
The terminal performs self-adjustment of its reception beam by utilizing its own sensor data to predict and compensate for orientation changes. This self-service mechanism allows the terminal to maintain beam alignment autonomously without requiring external intervention or repeated beam sweeping procedures.
Data Source
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Figure 1B
Figure 2(a)~2(b)
AI summary
The present disclosure relates to a communication method for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail business, security and safety related service and the like) on the basis of 5G communication technology and IoT related technologies. The present disclosure relates to a method by which a terminal determines a beam in a wireless communication system, comprising the steps of: performing a beam sweeping procedure of discovering a reception beam of the terminal and a transmission beam of a transmission reception point (TRP) of the wireless communication system, the orienting directions of the reception beam and the transmission beam being aligned to each other; determining a rotation angle of the rotated terminal by using a rotation detection sensor provided to the terminal when the terminal is rotated after the beam sweeping procedure is performed; determining a reception beam on which a downlink signal is to be received on the basis of the determined rotation angle when the determined rotation angle is a predetermined angle or greater.