Nested RTT Sidelink Positioning Adaptive PRS Timing
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently performing sidelink (SL) positioning due to fixed order restrictions in transmitting and receiving positioning reference signals (PRS), which limits the flexibility in resource utilization and accuracy in positioning.
Innovation Solution
A method for wireless communication that involves obtaining configuration information for SL PRS, receiving and transmitting SL PRS between devices, and reporting timing information of the transmitted SL PRS to enable flexible selection of SL PRS transmission and reception orders based on service requirements and channel conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed order restriction is applied for transmitting and receiving SL PRS, then the procedure is simple to implement, but the flexibility in resource utilization is limited and positioning accuracy is reduced
Solution Approach 1:
The patent applies the dynamics principle by changing the fixed transmission order of SL PRS to a flexible dynamic order. The first device can now transmit SL PRS in either the first or second time slot based on channel conditions and service requirements, rather than being constrained to a fixed sequence. This dynamic adjustment enables the system to optimize positioning accuracy while maintaining procedural simplicity through adaptive resource allocation.
2Device complexity
If fixed order restriction is applied for transmitting and receiving SL PRS, then the implementation is straightforward, but the adaptability to different service requirements and channel conditions is limited
Solution Approach 1:
The patent implements adaptability by enabling the first device to dynamically select between transmitting SL PRS in the first or second time slot based on real-time channel conditions and service requirements. This dynamic resource allocation allows the system to adapt to varying network conditions while maintaining relatively simple configuration, resolving the contradiction between implementation simplicity and operational flexibility.
Solution Approach 2:
The patent applies parameter changes by allowing the transmission time slot parameter to vary between fixed and flexible modes. The system can change the transmission parameter (time slot selection) based on channel conditions, thereby achieving adaptability without significantly increasing device complexity. This parameter flexibility enables optimized resource utilization across different service scenarios.
3Extent of automation
If fixed transmission order is used for SL PRS, then the system is easier to control, but the efficiency of SL transmission resources is reduced
Solution Approach 1:
The patent resolves this contradiction by introducing dynamic control where the first device autonomously selects the optimal transmission time slot based on channel conditions. This dynamic approach improves resource efficiency by avoiding fixed-order limitations while maintaining ease of control through automated adaptation. The system automatically adjusts transmission parameters without requiring complex manual intervention, thereby enhancing productivity while preserving controllability.
Data Source
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AI summary
Provided are a method by which a first device performs wireless communication and an apparatus supporting same. The method may comprise the steps of: acquiring configuration information related to a sidelink (SL) positioning reference signal (PRS) for SL-based positioning; receiving a first SL PRS from a second device; transmitting a second SL PRS to the second device; and reporting, to the second device, information related to the timing of the transmitted second SL PRS. For example, first SL positioning may be performed on the basis of the first SL PRS, the second SL PRS, and the information related to the timing of the transmitted second SL PRS.