Dual-Polarized Antenna Array Calibration With On-Demand Precision
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Solution Overview
Problem
Non-co-located dual-polarized antenna arrays in wireless communication systems face challenges with increased latency and power consumption during calibration, particularly as array sizes grow, and existing calibration methods may not efficiently address interference and performance reliability issues associated with feedline crossings.
Innovation Solution
A method is introduced where a first wireless communication device transmits capability information indicating the type of calibration for its non-co-located dual-polarized antenna array, allowing for online and mixed offline/online calibration, enabling incremental and on-demand calibration improvements, thereby reducing latency and power consumption, and enhancing calibration accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional calibration methods are used for non-co-located dual-polarized antenna arrays, then calibration can be performed, but latency and power consumption increase significantly, especially for large array sizes
Solution Approach 1:
The calibration process is divided into multiple types (Type I, Type II, Type III) with increasing precision and resource consumption. Type I provides basic calibration with lower latency, Type II provides enhanced calibration with moderate latency, and Type III provides full calibration with higher latency but maximum accuracy. This segmentation allows the system to select appropriate calibration depth based on operational needs, resolving the contradiction between calibration accuracy and latency.
Solution Approach 2:
The patent implements on-demand calibration where only necessary calibration operations are performed based on current operational requirements. Instead of always performing complete calibration, the system performs partial calibration (Type I or Type II) when full calibration is not needed, reducing latency and power consumption while maintaining sufficient calibration accuracy for the current operating conditions.
2Measurement precision
If traditional calibration methods are used for non-co-located dual-polarized antenna arrays, then calibration can be performed, but power consumption increases significantly, especially for large array sizes
Solution Approach 1:
The calibration process is segmented into multiple types with different power consumption levels. Type I calibration consumes the least power, Type II consumes moderate power, and Type III consumes the most power. The system can select the appropriate calibration type based on power availability and performance requirements, resolving the contradiction between calibration accuracy and power consumption.
Solution Approach 2:
The system performs only the necessary calibration operations based on current needs, avoiding unnecessary power consumption. By implementing on-demand calibration with multiple types, the system consumes power proportionally to the calibration depth required, rather than always performing complete high-power calibration sequences.
3Adaptability or versatility
If non-co-located dual-polarized antenna arrays are used, then device design flexibility improves, but interference and performance reliability issues arise due to feedline crossings
Solution Approach 1:
The patent introduces calibration as an intermediary process that compensates for the interference and performance issues introduced by non-co-located antenna configurations. By performing calibration to determine and correct for phase and amplitude differences between antenna elements, the system maintains performance reliability despite the physical separation and feedline crossings inherent in non-co-located designs.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless communication device may transmit, to a second wireless communication device, capability information including an indication of a type of calibration associated with a non-co-located dual-polarized antenna array of the first wireless communication device. The first wireless communication device may communicate, using the non-co-located dual polarized antenna array, based at least in part on the calibration associated with the non-co-located dual polarized antenna array. Numerous other aspects are described.