Sidelink PRS Priority Control for UL Conflict-Free Positioning
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Solution Overview
Problem
Existing sidelink (SL) positioning reference signal (PRS) transmission methods lack effective mechanisms to determine priority information, leading to inefficiencies and conflicts with uplink (UL) transmissions, which can result in inaccurate positioning and increased packet loss.
Innovation Solution
A method and device for determining priority information of SL PRS transmission, allowing for prioritized SL PRS transmission based on priority information, which includes priority values, IDs, QoS, and conflict resolution with UL transmissions using priority relationships and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If SL PRS transmission is performed without priority determination mechanism, then transmission simplicity is maintained, but transmission conflicts with UL transmissions occur and positioning accuracy deteriorates
Solution Approach 1:
The patent applies preliminary action by determining priority information for SL PRS transmission before the actual transmission occurs. The priority determination is performed in advance based on pre-configured parameters or signaling information, allowing the transmission device to pre-establish the transmission sequence and resolve potential conflicts with UL transmissions before they occur, thereby improving positioning accuracy without adding complexity during the transmission process itself
Solution Approach 2:
The patent implements feedback mechanisms where the transmission device receives priority information through signaling from the network or from the other SL device, processes this feedback information to determine transmission priority, and adjusts the transmission accordingly. This feedback loop ensures that priority-based conflict resolution is dynamically adapted to current transmission conditions while maintaining positioning accuracy
2Reliability
If priority information is determined for SL PRS transmission, then transmission conflicts are reduced and positioning accuracy improves, but determination process complexity increases
Solution Approach 1:
The patent applies parameter changes by transforming the complex priority determination problem into a set of manageable parameter comparisons. Instead of evaluating multiple complex factors simultaneously, the system uses predefined parameters such as priority levels, timing information, and power levels that can be directly compared to determine transmission priority. This parameter-based approach improves transmission reliability while keeping the determination process simple and systematic
Solution Approach 2:
The patent implements local quality by assigning different priority characteristics to different SL PRS transmissions based on their specific properties. Each transmission is evaluated according to its local characteristics (such as associated service type, timing requirements, or power levels) rather than applying a uniform complex determination process to all transmissions. This allows reliable priority resolution through simple local comparisons
3Productivity
If SL PRS transmission priority is not managed, then device complexity is minimized, but packet loss increases and resource allocation becomes inefficient
Solution Approach 1:
The patent applies dynamics by implementing a flexible priority management system that can adapt transmission priority based on current conditions. The priority determination is not static but can be dynamically adjusted based on received signaling information, changing transmission conditions, or priority level modifications. This dynamic approach improves resource allocation efficiency by ensuring high-priority transmissions get adequate resources while avoiding the complexity of rigid, pre-programmed transmission control
Solution Approach 2:
The patent implements self-service by enabling the transmission device to autonomously determine and execute priority-based transmission control based on received priority information. The device independently processes priority signals, compares them with current transmission parameters, and automatically adjusts its transmission behavior without requiring complex external control. This self-service mechanism improves resource allocation efficiency while minimizing the complexity of transmission control
Data Source
AI summary
A sidelink (SL) positioning reference signal (PRS) transmission method, performed by a first device, includes: determining priority information of SL PRS transmission; and performing the SL PRS transmission with a second device according to the priority information of the SL PRS transmission.