Antenna-Assisted Two-Point Positioning via Gain Tables
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current two-point positioning methods in wireless communication, such as TOA and RSS algorithms, face challenges in precision and reliability due to the need for three base stations and are affected by environmental factors like NLOS, making them costly and less accurate compared to three-point positioning methods.
Innovation Solution
A positioning system utilizing antenna-assisted TOA and RSS algorithms with multiple antennas in two wireless communication modules to determine the position of a mobile device, allowing for two-point positioning without the need for an intelligent antenna array and improving accuracy and reliability by ignoring environmental interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If TOA or RSS algorithm is applied to two-point positioning method, then the positioning cost is reduced, but the positioning precision deteriorates
Solution Approach 1:
The patent introduces antenna gain tables as an intermediary element that mediates between the received signal strength and the position determination. By incorporating antenna-specific gain characteristics stored in tables, the system compensates for the insufficient information in two-point positioning, thereby improving precision without adding base stations.
Solution Approach 2:
The patent changes the parameter set used in positioning from basic RSS/TOA values to enhanced parameters that include antenna gain information. By utilizing multiple antenna gain tables corresponding to different antennas, the system transforms the positioning calculation to achieve higher precision with only two base stations.
2Measurement precision
If AOA algorithm is used for two-point positioning, then the positioning precision is improved, but the device complexity increases
Solution Approach 1:
The patent uses antenna gain tables that copy and store pre-characterized antenna radiation patterns and gain information. Instead of requiring complex real-time angle measurement hardware, the system copies angular information indirectly through signal strength measurements combined with stored gain characteristics, achieving AOA-like precision without AOA hardware complexity.
3Measurement precision
If AOA algorithm is applied, then the positioning precision is improved, but the cost increases
Solution Approach 1:
The patent replaces expensive intelligent antenna array systems with simpler, cheaper antenna elements whose characteristics are captured in lookup tables. The gain tables serve as a low-cost substitute for complex hardware, enabling precise positioning without requiring expensive AOA-capable antenna arrays.
4Measurement precision
If AOA algorithm is used, then the positioning precision is improved, but the reliability deteriorates due to environmental factors
Solution Approach 1:
The patent converts the potentially harmful effect of environmental factors into a benefit by using antenna gain tables that can account for directional characteristics. The tables store gain information that helps distinguish between direct and reflected signals, allowing the system to identify and compensate for NLOS conditions rather than being degraded by them.
Data Source
AI summary
An antenna-assisted two-point positioning system for positioning a mobile device is disclosed. The antenna-assisted two-point positioning system comprises a first wireless communication module comprising first antennas, a second wireless communication module comprising second antennas, a storage module, and a processing module. The mobile device transmits a first signal strength to a first antenna for a first receive signal strength and a second signal strength to a second antenna for a second receive signal strength. The second wireless communication module and the first wireless communication module determine a first position and a second position corresponding to the mobile device. The storage module stores first antenna gain tables corresponding to the first antennas and second antenna gain tables corresponding to the second antennas. The processing module is used for judging whether an environmental interference factor is ignorable to selectively judge that the mobile device is located at the first or second position.