Configurable Coordinate System for Angle Reporting in 5G Positioning
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Solution Overview
Problem
Current wireless communication systems, particularly in the transition to 5G, face challenges in efficiently reporting angle-based measurements between base stations and positioning entities due to differences in coordinate systems, which affect positioning accuracy and spectral efficiency.
Innovation Solution
Implement a method where base stations and positioning entities determine whether to report angle-based measurements in a local coordinate system (LCS) or a global coordinate system (GCS), allowing for flexible reporting based on the system's orientation and available sensors, facilitating accurate positioning and enhanced spectral efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If angle-based measurements are reported in a fixed coordinate system (LCS or GCS), then positioning accuracy can be maintained for specific scenarios, but the system lacks flexibility to accommodate varying base station orientations and sensor capabilities
Solution Approach 1:
The patent implements a dynamic coordinate system selection mechanism where the base station can adaptively choose between LCS and GCS based on real-time conditions such as base station orientation, sensor availability, and positioning requirements. This dynamic adaptation resolves the contradiction by allowing the system to switch coordinate systems as needed rather than being fixed to one system.
Solution Approach 2:
The patent changes the parameter of coordinate system representation by allowing the base station to report angle measurements in either LCS or GCS based on determination criteria. This parameter change enables the system to optimize positioning accuracy for different scenarios while maintaining a standardized interface through the determination mechanism.
2Ease of operation
If angle-based measurements are reported in LCS, then reporting is simpler for individual base stations, but positioning accuracy deteriorates when combining measurements from multiple base stations with different orientations
Solution Approach 1:
The patent introduces a determination mechanism as an intermediary between the base station's local coordinate system and the positioning entity's global coordinate system. This intermediary evaluates whether to report in LCS or GCS based on various criteria, thereby mediating between the simplicity of LCS reporting and the accuracy requirements of multi-base station positioning.
Solution Approach 2:
Instead of always transforming local measurements to a global system, the patent inverts the approach by allowing direct GCS reporting when applicable, eliminating the need for transformation in certain scenarios and thereby maintaining both simplicity and accuracy.
3Measurement precision
If angle-based measurements are reported in GCS, then positioning accuracy is improved for multi-base station scenarios, but the complexity of coordinate system transformation and determination increases
Solution Approach 1:
The patent applies partial action by implementing coordinate system transformation and determination only when necessary for improving positioning accuracy. The determination mechanism evaluates specific conditions and applies GCS reporting or transformation only when it provides measurable benefit, rather than universally applying the more complex approach.
4Productivity
If a configurable coordinate system approach is implemented, then spectral efficiency is enhanced through optimized reporting, but the signaling overhead for configuration and determination increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring coordinate system parameters and determination criteria before angle measurement reporting. This preliminary configuration enables more efficient reporting during operation, as the determination mechanism already has the necessary parameters ready, reducing real-time signaling overhead while maintaining spectral efficiency benefits.
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a base station performs one or more angle-based measurements in a first coordinate system, determines whether to report, to a positioning entity, the one or more angle-based measurements in a local coordinate system (LCS) or a global coordinate system (GCS), and reports the one or more angle-based measurements to the positioning entity in the LCS or the GCS based on the determination. In an aspect, a positioning entity receives, from a base station, one or more angle-based measurements in an LCS of the base station or a GCS, determines whether the one or more angle-based measurements are in the LCS or the GCS, and processes the one or more angle-based measurements based on the determination.