Compressed Beamforming Positioning With a Single Fixed Wireless Node
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Solution Overview
Problem
Existing wireless communication systems, particularly 5G NR, face challenges in accurately determining the location of non-fixed wireless devices without reliance on GPS, which lacks fine resolution, and require methods that can utilize a single fixed wireless device for precise positioning.
Innovation Solution
A first wireless device configures a three-dimensional (3D) space with discrete points using established compressed beamforming (CBF) reports and calculates the location of a second wireless device based on updated CBF reports, leveraging a pre-calibrated configuration to enhance positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS is used for wireless device positioning, then global coverage is achieved, but positioning precision deteriorates due to lack of fine resolution
Solution Approach 1:
The patent introduces compressed beamforming reports as an intermediary mechanism between the wireless device and the positioning system. These reports contain channel state information that serves as a mediator to infer device location without direct GPS signals, thereby achieving high-precision positioning independent of GPS infrastructure
Solution Approach 2:
The patent replaces the GPS satellite-based electromagnetic positioning system with a ground-based wireless communication system that uses beamforming channel characteristics. This substitution leverages the existing wireless communication infrastructure to achieve positioning, eliminating dependency on external GPS systems while maintaining or improving precision
2Measurement precision
If multiple fixed wireless devices are used for positioning, then positioning accuracy improves, but device complexity increases
Solution Approach 1:
The patent enables a single fixed wireless device to perform positioning by utilizing its own beamforming capabilities and the channel state information from the moving device. The system serves itself by leveraging the inherent directional characteristics of beamformed signals, eliminating the need for multiple external reference devices
Solution Approach 2:
The patent changes the approach from using multiple devices to using a single device by transforming the positioning parameters. Instead of relying on geometric positioning from multiple points, the system uses beamforming parameters (beam direction, gain, channel state information) to determine location, thereby reducing system complexity while maintaining accuracy
Data Source
AI summary
A first wireless device may obtain a configuration of a three-dimensional (3D) space. The 3D space may include a set of discrete points. The configuration may include a set of established compressed beamforming (CBF) reports. Each of the set of established CBF reports may be associated with at least one discrete point of the set of discrete points. The first wireless device may receive an updated CBF report from a second wireless device. The first wireless device may calculate a location of the second wireless device based on the updated CBF report and the set of established CBF reports. The first wireless device may be an access point (AP), a base station, a network node, a network entity, or a transmission reception point (TRP). The second wireless device may be a station (STA) or a UE.