OAM Antenna Sub-Rings for Multi-Mode Wireless Coordination
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Solution Overview
Problem
Wireless communications systems using circular antenna panels for orbital angular momentum (OAM) face coordination issues leading to reduced signal strength and efficiency, particularly when multiple OAM modes are transmitted simultaneously.
Innovation Solution
Implementing a UCA antenna structure divided into multiple subsets or sub-rings, each generating a respective OAM mode, and transmitting an indication of an OAM base value to facilitate efficient communication with a second wireless node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If circular antenna panels are used for OAM communication, then multiple OAM modes can be transmitted simultaneously, but coordination issues arise leading to reduced signal strength and communication efficiency
Solution Approach 1:
The patent divides the uniform circular array antenna panel into multiple subsets or sub-rings, with each sub-ring dedicated to generating a specific OAM mode. This segmentation eliminates coordination issues between antenna elements by assigning fixed roles to each sub-ring, thereby maintaining signal strength while enabling simultaneous transmission of multiple OAM modes through spatial division multiplexing.
2Productivity
If multiple OAM modes are transmitted simultaneously using a full UCA array, then communication capacity increases, but signaling complexity and hardware coordination requirements increase
Solution Approach 1:
By segmenting the UCA array into fixed sub-rings where each sub-ring generates a predetermined OAM mode, the patent eliminates the need for complex dynamic coordination signaling. The receiving device can identify which sub-rings are active and what OAM modes they generate based on predefined relationships, significantly reducing signaling overhead while maintaining high communication capacity through simultaneous multi-mode transmission.
Solution Approach 2:
The patent establishes predetermined relationships between sub-rings and OAM modes in advance, so that when transmission begins, the receiving device already knows the mapping between active sub-rings and their corresponding OAM modes. This preliminary configuration eliminates the need for real-time coordination signaling during transmission, reducing signaling complexity while enabling efficient multi-mode communication.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A first wireless node may transmit, to a second wireless node, an indication of an orbital angular momentum (OAM) base value that is associated with one or more OAM modes. The OAM base value may correspond to a number of antenna elements of an antenna ring at the first wireless node, and for each of the one or more OAM modes. Based on the OAM base value, the first wireless node may communicate reference signaling according to the one or more OAM modes using the number of antenna elements of the antenna ring. The second wireless node may use a same number of antenna elements based on the indicated OAM base value.