Sidelink Positioning Reference Signal Resource Sensing for UE Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems, particularly in 5G, face challenges in accurately determining candidate sensing resources for sidelink positioning reference signals, leading to inefficiencies in channel sensing and PRS transmission.
Innovation Solution
A method and system for user equipment (UE) to receive a candidate sensing resource configuration, perform channel sensing, detect resources below a signal strength threshold, and transmit sidelink positioning reference signals (PRS) on selected resources, with a sidelink resource management component determining and transmitting the configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If channel sensing is performed on all available resources, then positioning accuracy is improved, but signaling overhead and processing complexity increase
Solution Approach 1:
The patent segments the sensing resource pool into multiple candidate sensing resource sets, where each set corresponds to a specific PRS resource. The UE only performs sensing on the candidate resources associated with selected PRS resources rather than all available resources, reducing processing complexity while maintaining positioning accuracy for the selected resources.
Solution Approach 2:
The network configures candidate sensing resource sets in advance before the UE performs sensing. This preliminary configuration allows the UE to efficiently identify which resources to sense based on received signaling, avoiding the need to process all available sensing resources and reducing overall system complexity.
2Productivity
If candidate sensing resource configuration is provided for each PRS resource, then sensing efficiency is improved, but signaling overhead increases
Solution Approach 1:
The candidate sensing resource sets are designed to serve multiple purposes: they identify resources for PRS transmission, indicate resources for channel sensing, and enable resource selection for both uplink and sidelink communications. This multi-functionality reduces the need for separate signaling for each purpose, thereby reducing overall signaling overhead while maintaining sensing efficiency.
3Measurement precision
If UE selects sensing resources based on signal strength threshold, then resource selection accuracy is improved, but detection complexity increases
Solution Approach 1:
The UE performs sensing and threshold comparison only on the candidate sensing resources that are configured and indicated by the network, rather than evaluating all possible sensing resources. This partial action approach maintains resource selection accuracy for the relevant resources while reducing the overall detection complexity by limiting the scope of evaluation.
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a sidelink resource management component determines a candidate sensing resource configuration associated with a set of candidate sensing resources for channel sensing by a user equipment (UE), the set of candidate sensing resources comprising candidate resources associated with a sidelink (SL) positioning reference signal (PRS) transmission by the UE. The sidelink resource management component transmits the candidate sensing resource configuration to the UE. The UE performs channel sensing and selects resource(s) for SL PRS transmission based on the candidate sensing resource configuration.