Full-Duplex UE Positioning via Interference-Based Boundaries
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in managing and measuring the position of User Equipment (UE) in full-duplex communication systems, particularly due to inter-device interference, which affects scheduling and resource allocation.
Innovation Solution
A method is proposed where a base station sets a unit distance based on inter-device interference (IDI) size to determine position candidates for UEs by configuring intersection regions and checking overlap with boundaries, allowing for efficient UE position measurement and reconfiguration if necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex communication is implemented to improve spectral efficiency, then resource allocation efficiency is improved, but inter-device interference increases making UE position measurement difficult
Solution Approach 1:
The patent segments the UE position measurement process into multiple stages: initial position estimation using downlink signals, refinement using uplink signals, and verification using bidirectional signals. This segmentation allows the system to handle inter-device interference by processing measurements at different times and using different signal types, ultimately achieving accurate position measurement in full-duplex environments while maintaining resource allocation efficiency
Solution Approach 2:
The patent introduces an intermediary measurement approach where the system uses reference signals and pilot signals as mediators to indirectly determine UE position. Instead of directly measuring position in the presence of strong inter-device interference, the system uses these intermediary signals that can be specifically designed and configured to enable accurate position estimation even when full-duplex interference is present
2Device complexity
If traditional position measurement methods are used to maintain simplicity, then device complexity is reduced, but position measurement accuracy deteriorates in full-duplex systems
Solution Approach 1:
The patent implements a dynamic position measurement system that adapts its measurement strategy based on the communication mode. When full-duplex operation is detected, the system automatically switches to the enhanced measurement procedure involving multiple signal types and iterative refinement. This dynamic adaptation maintains simplicity in half-duplex modes while achieving high accuracy in full-duplex modes without requiring permanently complex hardware
Solution Approach 2:
The patent performs preliminary position estimation using downlink reference signals before conducting the main position measurement. This preliminary action provides an initial position estimate that guides subsequent measurement steps, allowing the system to achieve high accuracy without requiring all measurement components to operate at maximum complexity simultaneously. The preliminary estimation simplifies the overall process by providing a starting point for refinement
Data Source
AI summary
The present invention relates to a method for positioning multiple user equipments (UEs) by a base station in a wireless communication system supporting full-duplex communication and an apparatus therefor. More specifically, the present invention comprises: setting a unit distance on the basis of the magnitude of inter-device interference (IDI) with respect to a first UE; and establishing multiple boundaries around each of the multiple UEs and the base station according to relative distances on the basis of the unit distance and checking whether the boundaries overlap each other. Here, the relative distances indicate with respect to the multiple UEs, measured on the basis of the magnitude of inter-device interference (IDI).