Dynamic Anchor UE Selection for V2X Positioning Accuracy
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in sidelink communication, particularly in vehicle-to-everything (V2X), vehicle-to-vehicle (V2V), and vehicle-to-pedestrian (V2P) positioning, where non-anchor user equipment (UEs) may have inaccurate positioning estimates, leading to reduced system accuracy and increased errors.
Innovation Solution
A method and apparatus that determine the accuracy of positioning estimates for non-anchor sidelink UEs and configure them as anchor UEs when the estimates meet specific accuracy conditions, using confidence values based on comparison of predicted and expected observation error variances, coincidence of independent sensor measurements, or Kalman filter innovations, to improve positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If non-anchor UEs are used for positioning in distributed systems, then system coverage and flexibility are improved, but positioning accuracy deteriorates due to inaccurate positioning estimates
Solution Approach 1:
The patent implements dynamic anchor UE selection where non-anchor UEs can be configured as anchor UEs based on their positioning estimate accuracy. This dynamic reconfiguration allows the system to adapt to changing conditions and maintain positioning accuracy while preserving the flexibility of distributed positioning architecture.
Solution Approach 2:
The system changes the operational parameter of UEs by transitioning them between non-anchor and anchor states based on positioning estimate accuracy thresholds. This parameter change enables the system to maintain high positioning accuracy by ensuring only UEs with sufficient accuracy contribute as anchors to the positioning network.
2Reliability
If more UEs are configured as anchor UEs to improve positioning accuracy, then system reliability improves, but device complexity increases due to additional accuracy verification requirements
Solution Approach 1:
The patent establishes clear parameter thresholds for positioning estimate accuracy that determine whether a non-anchor UE can be configured as an anchor UE. This parameter-based approach simplifies the decision-making process and reduces system complexity by providing objective criteria for anchor UE selection, while still ensuring high positioning reliability.
3Measurement precision
If anchor UE selection is based on multiple accuracy criteria (confidence values, sensor coincidence, Kalman filter innovations), then positioning accuracy improves, but difficulty of detecting and measuring increases
Solution Approach 1:
The patent segments the accuracy assessment into distinct components: confidence values from positioning estimates, coincidence of independent sensor measurements, and Kalman filter innovations. Each component is evaluated separately using established methods, and their results are combined to determine overall positioning accuracy. This segmentation makes the complex measurement process more manageable and implementable.
Data Source
AI summary
A method of wireless communication by a positioning entity includes determining an accuracy of a positioning estimate of a first non-anchor sidelink user equipment (UE). The method also includes determining the accuracy satisfies an accuracy condition. The method further includes configuring the first non-anchor sidelink UE as a first anchor UE based on the positioning estimate satisfying the accuracy condition.