Lens-Based Antenna Reception for FR2 MIMO Frequency Adaptation
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Solution Overview
Problem
In high frequency bands, such as the FR2 band, path loss and increased overhead and calculation requirements pose challenges for efficient MIMO-based communication due to the need for a large number of antennas, which complicates signal transmission and reception.
Innovation Solution
A method and apparatus that utilize lenses to adjust the frequency of wireless signals to match antenna element spacing, allowing flexible communication without altering the physical arrangement of antennas, by applying reference frequency information to determine the appropriate lens for each antenna element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large number of antennas are used to transmit and receive wireless signals in high frequency bands, then path loss is compensated and communication quality is improved, but overhead and calculation requirements increase
Solution Approach 1:
The patent divides the antenna array into multiple sub-arrays or groups, where each group is independently controlled. This segmentation reduces the computational complexity of channel estimation and beamforming by breaking down the large-scale MIMO problem into smaller, more manageable sub-problems, while still maintaining the overall antenna gain needed to compensate for path loss in high frequency bands.
Solution Approach 2:
The patent employs channel estimation and beamforming techniques for only a subset or representative portion of the antenna elements rather than all elements. This partial action approach reduces overhead and calculation requirements while maintaining sufficient communication quality by focusing computational resources on the most critical antenna elements or directions.
2Reliability
If a large number of antennas are used to improve communication in high frequency bands, then path loss is reduced, but the physical arrangement and spacing of antenna elements becomes more complex
Solution Approach 1:
The patent segments the large antenna array into multiple smaller sub-arrays with simpler, more manageable physical arrangements. Each sub-array can be independently positioned and configured, reducing the overall structural complexity while maintaining the total number of antenna elements needed for path loss compensation in high frequency bands.
Solution Approach 2:
The patent explores three-dimensional antenna array configurations and spatial arrangements that optimize performance while managing physical complexity. By utilizing vertical and horizontal dimensions strategically, the system can achieve the required antenna gain and coverage without requiring excessively complex two-dimensional planar arrangements.
3Adaptability or versatility
If the frequency of wireless signals varies, then communication can adapt to different conditions, but the lens configuration for each antenna element must be adjusted
Solution Approach 1:
The patent designs lenses with broad bandwidth characteristics that can operate effectively across a wide range of frequencies without requiring frequent reconfiguration. These universal lenses are engineered to maintain their focusing properties across multiple frequency bands, reducing the complexity of adapting lens configurations when signal frequencies vary.
Solution Approach 2:
The patent adjusts lens configurations for only a subset of antenna elements or for representative frequency points rather than optimizing every antenna element at every possible frequency. This partial adjustment approach maintains frequency adaptability while significantly reducing the overall complexity of lens configuration management across the antenna array.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves MIMO-based communication performance by enabling efficient signal transmission and reception with a large number of antennas, adapting to frequency variations and maintaining communication quality without changing the antenna structure.
Implementation Method 1
receiving the first signal incident on at least part of the plurality of antenna elements of the first antenna after being refracted at the first lens
Data Source
AI summary
A method for operating a first communication node in a communication system includes the steps of: receiving a first command from a second communication node; identifying reference frequency information for determining, on the basis of the received first command, a lens to be applied to a first antenna that is included in the first communication node and includes a plurality of antenna elements; receiving first scheduling information indicating that a first signal is to be transmitted to the first communication node; determining, on the basis of the first scheduling information, a first frequency at which the first signal is transmitted; determining a first lens on the basis of the reference frequency information and the first frequency; and receiving a first signal incident on at least some of the plurality of antenna elements after being refracted from the first antenna through the first lens.