Sidelink Positioning Slot Allocation for PSSCH and SL PRS
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Solution Overview
Problem
The challenge in determining a resource for a sidelink positioning reference signal (SL PRS) in communication systems like NR is not adequately addressed, impacting positioning techniques.
Innovation Solution
A method and terminal device are provided to transmit or receive the first physical sidelink shared channel (PSSCH) in a slot, utilizing a first reference signal for sidelink positioning, and a computer-readable storage medium is used to facilitate this process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the first slot is used for both PSSCH transmission and SL PRS transmission, then spectral efficiency is improved and resource utilization is optimized, but the complexity of resource allocation and signal interference increases
Solution Approach 1:
The first slot is segmented into different time intervals: a first time interval for PSSCH transmission and a second time interval for SL PRS transmission. This temporal segmentation allows both signals to coexist in the same slot without mutual interference, resolving the contradiction between resource utilization efficiency and signal interference management.
Solution Approach 2:
The patent introduces time domain dimensionality within the slot to separate PSSCH and SL PRS transmissions. By utilizing different time intervals within the same slot, the system achieves multi-functional resource usage while avoiding signal collision, thus improving spectral efficiency without excessive complexity.
2Productivity
If the first slot is used for both PSSCH transmission and SL PRS transmission, then resource utilization is optimized, but transmission latency may increase due to shared resource constraints
Solution Approach 1:
The first slot is divided into a first time interval for PSSCH and a second time interval for SL PRS. This segmentation enables sequential transmission of both signals within the same slot, optimizing resource utilization while maintaining controlled transmission timing that prevents excessive latency accumulation.
3Measurement precision
If SL PRS is transmitted in the first slot with PSSCH, then positioning accuracy is enhanced through additional reference signals, but the complexity of signal processing and interference cancellation increases
Solution Approach 1:
The first slot is segmented into distinct time intervals: the first time interval for PSSCH and the second time interval for SL PRS. This temporal separation simplifies signal processing by eliminating mutual interference between the two signals, allowing the receiving device to process each signal independently and accurately, thus enhancing positioning accuracy without excessive processing complexity.
Solution Approach 2:
The time interval segmentation acts as an intermediary mechanism that separates the PSSCH and SL PRS signals in the time domain. This intermediary structure enables clear distinction between the two signals during reception, simplifying the signal processing requirements while maintaining the benefits of having both signals available for positioning.
Data Source
AI summary
Provided are a method for wireless communication, a terminal device and storage medium. The method includes: a terminal device sending or receiving a first PSSCH in a first slot, wherein the first slot is also used for transmitting a first reference signal, and the first reference signal is used for sidelink positioning.