Sidelink Positioning Priority Scheduling for Overlapping NR Signals
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Solution Overview
Problem
In NR V2V or V2X sidelink communication systems, conflicts between sidelink communications and uplink transmissions lead to collisions, necessitating improved techniques to resolve these conflicts and enhance communication reliability.
Innovation Solution
A method for managing sidelink positioning by detecting overlapping symbols between SL PRS and other communications, retrieving priority information, and determining a schedule for transmission or reception based on this priority, thereby reducing collisions and maintaining throughput for higher priority communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If UEs autonomously select resources for sidelink communications based on predefined sensing and resource selection procedures, then resource allocation flexibility is improved, but resource conflicts and collisions increase
Solution Approach 1:
The patent introduces a priority mechanism as an intermediary layer between autonomous resource selection and conflict resolution. Priority values are assigned to different sidelink messages and uplink transmissions, acting as a mediator that resolves conflicts when resource overlaps occur. This maintains the flexibility of autonomous selection while improving reliability through structured conflict management.
Solution Approach 2:
The patent changes the parameter of resource selection by introducing priority values as an additional dimension for resource allocation decisions. Instead of relying solely on sensing and random selection, the system now considers priority parameters when resolving conflicts, transforming the resource allocation process from purely autonomous to priority-guided autonomous selection.
2Measurement precision
If UEs prioritize sidelink positioning transmissions over other communications, then positioning accuracy is improved, but throughput of other communications may decrease
Solution Approach 1:
The patent applies partial action by allowing UEs to prioritize SL PRS transmissions only when they overlap with lower priority communications. Instead of always prioritizing positioning, the system selectively applies priority based on the specific communication context, maintaining positioning accuracy when needed while preserving throughput for other communications when no conflict exists.
Solution Approach 2:
The priority mechanism is dynamic rather than static. UEs evaluate the priority of each transmission in real-time and adjust resource allocation decisions accordingly. This dynamic approach allows the system to favor positioning when conflicts arise with low-priority traffic, while maintaining normal throughput operations when no conflicts exist.
3Reliability
If UEs detect and resolve conflicts between overlapping transmissions, then collision reduction is improved, but computational complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-assigning priority values to different types of sidelink messages and uplink transmissions before conflicts occur. This preliminary classification simplifies the conflict resolution process, as UEs only need to compare pre-defined priority values rather than performing complex real-time analysis, thereby reducing computational complexity while maintaining collision reduction effectiveness.
Data Source
AI summary
Techniques relating to prioritization of sidelink positioning reference signals (SL PRS) for sidelink positioning in a new radio (NR) system are described. In one embodiment. a method to manage communications for a user equipment (UE) includes detecting a set of overlapping symbols between a SL PRS and a message in a slot for a frame in a time domain of a NR system, retrieving priority information for the SL PRS from a data storage device, and determining a schedule for transmission or reception of the SL PRS and the message based on the priority information. Other embodiments are described and claimed.