Sidelink Positioning Accuracy Thresholds for UE Session Participation
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Solution Overview
Problem
Current sidelink positioning systems, such as those defined by 3GPP, lack mechanisms for UEs to indicate the minimum position accuracy requirements for participating in sidelink positioning sessions, leading to inefficiencies in vehicle maneuvers that require specific accuracy levels, and do not allow UEs to decline participation based on unsupported accuracy thresholds.
Innovation Solution
Implement signaling mechanisms for UEs to specify and indicate the required position and range accuracy for sidelink positioning session participation, enabling UEs to decline if they cannot meet the specified thresholds, and providing criteria and information elements for standardized accuracy specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sidelink positioning systems allow all UEs to participate in positioning sessions without accuracy criteria, then the system is simpler and more inclusive, but positioning accuracy and reliability deteriorate when specific accuracy levels are required for vehicle maneuvers
Solution Approach 1:
The patent applies preliminary action by having UEs indicate their supported positioning accuracy levels in advance through capability signaling messages before actually participating in positioning sessions. This allows the network to pre-filter and select appropriate UEs for specific positioning requirements, avoiding the need for complex real-time accuracy verification while maintaining high positioning precision when needed.
2Reliability
If sidelink positioning systems implement accuracy requirement criteria and thresholds, then positioning reliability improves for specific maneuvers, but system complexity and signaling overhead increase
Solution Approach 1:
The patent applies parameter changes by introducing configurable accuracy threshold parameters that can be adjusted based on specific application requirements. Different vehicle maneuvers (e.g., intersection traversal, lane changes, motorcade coordination) can have different accuracy thresholds set, allowing the system to maintain high reliability for critical maneuvers while keeping signaling overhead manageable through parameterization rather than hard-coded complexity.
Solution Approach 2:
The patent uses preliminary action by having UEs pre-indicate their accuracy capabilities through capability signaling, and having the network pre-determine which UEs meet the accuracy requirements for specific positioning sessions. This advance filtering mechanism ensures reliable positioning for maneuvers requiring specific accuracy levels without needing complex real-time verification procedures.
3Measurement precision
If sidelink positioning systems filter UEs based on accuracy capabilities, then positioning session quality improves, but the quantity of participating UEs decreases
Solution Approach 1:
The patent applies local quality by allowing different accuracy requirements to be applied to different positioning sessions or different vehicle maneuvers rather than imposing a uniform accuracy threshold on all positioning activities. This enables the system to use fewer high-accuracy UEs for critical maneuvers like intersection traversals while allowing more UEs with lower accuracy capabilities to participate in less critical positioning scenarios, thus maintaining positioning precision where needed while preserving a larger pool of participating UEs overall.
Data Source
AI summary
Disclosed are systems and techniques for wireless communications. For example, a first network device can determine at least one of position accuracy requirements or range accuracy requirements for other network devices to participate in a positioning session with the first network device. The first network device can transmit, to one or more second network devices, accuracy requirement information comprising at least one of the position accuracy requirements or the range accuracy requirements.