Assisting UE Positioning Signal Configuration
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately determining the position of user equipment (UE) due to reliance on limited positioning signals, which can result in inaccuracies, especially when signals have low received signal strength or no line of sight, leading to inefficiencies in resource usage and increased latency.
Innovation Solution
The system incorporates assisting UEs to transmit additional positioning signals to the target UE, enhancing positioning accuracy by providing supplementary measurements, and dynamically or statically configuring the target UE to receive these signals, either periodically, semi-persistently, or aperiodically, based on UE capability and network instructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning signals are transmitted from base stations only, then network resource usage is limited, but positioning accuracy deteriorates due to limited signal sources and coverage
Solution Approach 1:
The patent enables user equipment to perform dual functions: serving as both ordinary communication devices and positioning signal sources. Assisting UEs transmit positioning signals to target UEs, allowing regular devices to contribute to positioning functionality without requiring dedicated positioning infrastructure, thereby improving accuracy while managing system complexity
Solution Approach 2:
The system leverages existing UE devices to provide positioning services to other UEs. By enabling UEs to autonomously transmit and receive positioning signals, the network utilizes device resources for positioning purposes, reducing the need for additional dedicated positioning infrastructure and improving overall positioning capability
2Measurement precision
If additional positioning signals from assisting UEs are transmitted, then positioning accuracy improves, but network signaling overhead and resource usage increase
Solution Approach 1:
The patent implements selective positioning signal transmission where assisting UEs transmit positioning signals only when needed based on target UE location requirements, network configuration, and measurement conditions. This partial action approach provides sufficient positioning accuracy without generating excessive signaling overhead from continuous transmissions by all devices
Solution Approach 2:
The system dynamically adjusts positioning signal transmission based on real-time conditions including target UE position requirements, assisting UE availability, and network state. Configuration parameters such as transmission periodicity and assisting UE selection are adapted dynamically to balance positioning accuracy with signaling overhead
3Measurement precision
If positioning measurements are performed continuously, then positioning accuracy is maintained, but device energy consumption and processing load increase
Solution Approach 1:
The patent implements periodic positioning measurements instead of continuous monitoring. Target UEs perform positioning measurements at configured intervals based on network instructions and positioning requirements, maintaining acceptable positioning accuracy while significantly reducing energy consumption and processing load compared to continuous measurement approaches
Solution Approach 2:
The measurement periodicity and triggering conditions are dynamically adjusted based on positioning accuracy requirements, UE mobility state, and network conditions. The system transitions between continuous, periodic, and on-demand measurement modes to optimize the balance between positioning accuracy and device resource consumption
Data Source
AI summary
Systems and methods for measuring at and reporting by a target user equipment (UE) of one or more positioning signals sent from one or more assisting UEs to the target UE are disclosed herein. The target UE may receive a positioning signal from an assisting UE according to a communication received at the target UE. The target UE may proceed to perform a positioning measurement using the positioning signal received from the target UE. The positioning measurement may be used by the target UE to estimate its own position, or the positioning measurement may be sent to another entity within a wireless communications system to be used in estimating the physical position of the UE. The handling of multiple received positioning signals from various sources, and the handling of situations where, for example, a transmission reception point (TRP) and an assisting UE may schedule overlapping positioning signals, ate also discussed.