Receiver Antenna Alignment by Distance for Near-Field Signal Quality
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Solution Overview
Problem
In wireless communications systems with increased antenna array sizes, near-field communication properties change, leading to inefficiencies in signal transfer due to orientation challenges, particularly when receivers are not optimally aligned with transmitters.
Innovation Solution
Receivers dynamically adjust their antenna array orientations based on the distance to the transmitter, aligning parallel to the transmitter's orientation within a threshold distance and normal to the radial direction when beyond the threshold, enhancing signal quality and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver uses a fixed antenna array orientation, then the device complexity is reduced, but the signal quality deteriorates in near-field communications
Solution Approach 1:
The receiver dynamically adjusts its antenna array orientation based on the distance to the transmitter. When the distance is less than a threshold distance, the receiver orientates its antenna array parallel to the transmitter's antenna array; when the distance is greater than or equal to the threshold distance, the receiver orientates its antenna array normal to the radial direction. This dynamic adjustment optimizes signal quality for both near-field and far-field communications without requiring complex real-time feedback mechanisms.
Solution Approach 2:
The system changes the orientation parameter of the receiver's antenna array based on the distance parameter. By comparing the distance between transmitter and receiver to a threshold value, the system selects the appropriate orientation mode (parallel or normal), thereby adapting to different communication scenarios and maintaining high signal quality across varying distances.
2Reliability
If the receiver dynamically adjusts antenna array orientation based on distance, then the signal quality improves, but the processing overhead increases
Solution Approach 1:
The transmitter pre-calculates and transmits the threshold distance value to the receiver in advance. This allows the receiver to have the threshold information ready before communication begins, eliminating the need for real-time threshold calculation and reducing processing overhead during actual communication operations.
Solution Approach 2:
The communication space is segmented into two regions based on distance: near-field (distance < threshold) and far-field (distance ≥ threshold). Each region has a predetermined optimal orientation strategy, simplifying the decision-making process and reducing computational complexity compared to continuous optimization approaches.
3Productivity
If the receiver uses parallel orientation for near-field communications, then the signal transfer efficiency improves, but the adaptability to different communication scenarios decreases
Solution Approach 1:
The system dynamically switches between two orientation modes based on the communication scenario. For near-field communications (distance < threshold), the receiver uses parallel orientation to maximize signal transfer efficiency. For far-field communications (distance ≥ threshold), the receiver switches to normal orientation to maintain proper wavefront alignment. This dynamic adaptability ensures optimal performance across diverse communication scenarios.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. A receiver may orient its antenna arrays based on signaling from a transmitter and a distance between the receiver and the transmitter. The transmitter may transmit an indication of an orientation of its antenna array. The receiver may receive the indication and may determine the distance between the receiver and the transmitter. Based on whether the distance between the receiver and the transmitter satisfies a threshold distance from the transmitter, the receiver may select an orientation for its antenna array. The receiver may select a first antenna orientation based on the distance failing to satisfy the threshold distance and may select a second orientation based on the distance satisfying the threshold distance.