UE Multipath Reflector Localization Without Synchronization
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Solution Overview
Problem
Existing wireless communication technologies face challenges in accurately identifying and mapping reflectors in an environment for precise positioning and ranging, especially in vehicle-to-everything (V2X) communications, due to the lack of efficient methods for combining UE-specific information without requiring synchronization and minimizing procedural overhead.
Innovation Solution
The technology enables UE-to-UE communication for exchanging information to identify reflectors by time-aligning and aligning local coordinate systems, using multipath channel measurements to determine reflector locations, and combining information from multiple UEs to enhance accuracy and reduce computational complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UE-specific information is combined using existing wireless communication technologies, then reflector identification can be achieved, but synchronization requirements increase procedural overhead and complexity
Solution Approach 1:
The system enables UEs to autonomously perform reflector identification using their own local coordinate systems and measurements without requiring external synchronization coordination. Each UE independently processes its own measurements and exchanges only essential information, eliminating the need for complex centralized synchronization mechanisms.
Solution Approach 2:
The reflector identification process is divided into independent UE-specific measurement tasks rather than requiring a unified synchronized measurement campaign. Each UE performs local measurements and processing independently, then shares results through lightweight information exchange, breaking the monolithic synchronization requirement into separable units.
2Loss of information
If traditional reflector identification methods are used, then positioning information can be obtained, but the procedural overhead and complexity increase
Solution Approach 1:
UEs perform local coordinate system alignment and measurement processing in advance before reflector identification. By preparing measurement data and coordinate transformations beforehand, the actual reflector identification process requires minimal additional procedural steps, reducing overall time loss.
Solution Approach 2:
The patent combines multiple functions including coordinate system alignment, measurement processing, and reflector identification into a unified workflow. This integration eliminates redundant procedural steps that would otherwise be required when performing these functions separately, reducing procedural overhead while maintaining complete positioning information.
Data Source
AI summary
This specification describes an apparatus comprising: means for receiving, at a target user equipment, UE, a signal including information indicative of supporting UE measurements of signals transmitted from the target UE to a supporting UE via a multipath communications channel, the supporting UE measurements including delay and angle measurements of the signals transmitted from the target UE to the supporting UE via the multipath communications channel; means for time-aligning the supporting UE measurements with target UE measurements of signals transmitted from the supporting UE to the target UE via the multipath communications channel, the target UE measurements including delay and angle measurements for the signals transmitted from the supporting UE to the target UE via the multipath communications channel; means for determining, based on the time-aligned measurements, an association between a component of the target UE measurements and at least one respective component of the supporting UE measurements, wherein the associated components are determined to correspond to a particular reflector in an environment of the target UE; and means for determining, based on the associated components, location information for the particular reflector.