OAM Beam Direction Feedback for Non-Aligned Wireless Links
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Solution Overview
Problem
Current OAM communication systems face challenges with large errors and high costs due to the need to know the deflection state of the transceiver array, leading to poor communication effects and limited application scope, especially under non-alignment conditions.
Innovation Solution
A method and apparatus for determining OAM beam transmission direction by sending multiple OAM beams and receiving beam information, allowing for effective alignment without obtaining the deflection state of the transceiver array, enabling communication even in motion and expanding application to mobile scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the deflection state of the transceiver array is obtained or estimated to control the OAM beam radiation direction, then the communication effect is improved, but the error is large and the costs are high
Solution Approach 1:
The patent implements a feedback mechanism where the receiver detects the OAM beam signal quality from multiple transmitting directions and feeds back beam information to the sender. The sender then determines the optimal OAM beam transmission direction based on this feedback, creating a closed-loop system that continuously optimizes beam alignment without requiring precise prior knowledge of transceiver array deflection states.
Solution Approach 2:
The patent performs preliminary beam scanning by transmitting multiple OAM beams in different directions before actual communication. This preliminary action identifies the optimal transmission direction in advance, avoiding the need for complex real-time deflection state estimation during data transmission.
2Reliability
If the deflection state of the transceiver array is obtained or estimated to control the OAM beam radiation direction, then the communication effect is improved, but the costs are high
Solution Approach 1:
The feedback mechanism allows the system to achieve optimal beam alignment through simple signal quality detection and direction information exchange, avoiding the need for complex deflection state estimation algorithms and reducing computational costs while maintaining communication effectiveness.
Solution Approach 2:
The patent uses multiple inexpensive OAM beam transmission attempts in different directions rather than investing in complex deflection state measurement equipment. Each beam transmission is a simple, low-cost probe that provides useful information for determining the optimal direction.
3Manufacturing precision
If the OAM beam radiation direction is controlled based on static model, then the alignment is achieved, but the application scope is limited
Solution Approach 1:
The patent transitions from a static alignment model to a dynamic adaptive model where the OAM beam transmission direction is continuously adjusted based on real-time feedback from the receiver. This dynamic approach allows the system to adapt to changing conditions such as transceiver motion, expanding application scope to mobile scenarios while maintaining alignment accuracy.
4Measurement precision
If multiple OAM beams are transmitted in different directions to determine the optimal transmission direction, then the alignment accuracy is improved, but the time consumption increases
Solution Approach 1:
The patent transmits multiple OAM beams in different directions, which is more than the single-direction transmission in traditional systems. This excessive action in terms of number of transmissions achieves better alignment accuracy through comparison of signal qualities from multiple directions.
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
This approach simplifies the determination of effective OAM beam transmission and reception directions, reducing errors and costs, and enables reliable communication under non-alignment conditions, including mobile scenarios, thus enhancing communication efficiency and scope.
Implementation Method 1
transmitting, based on the plurality of transmitting directions, a plurality of first OAM beams to a receiver
Data Source
AI summary
The present disclosure provides a method and apparatus for determining an OAM beam transmission direction, a terminal device, an access network device and a storage medium and belongs to the field of communication technologies. The method includes: determining, by a sender, a plurality of transmitting directions; based on the plurality of transmitting directions, sequentially transmitting a plurality of first OAM beams to a receiver; receiving beam information sent by the receiver, and based on the beam information, determining the OAM beam transmission direction.