Sidelink Ranging Resource Allocation for UE Positioning
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Solution Overview
Problem
Current NR sidelink communication systems lack dedicated resources for sidelink ranging, making it difficult to determine distance and angle between user equipment (UEs) for positioning, especially when UEs are outside base station coverage or in an idle state, as existing channels and reference signals are not suited for ranging purposes.
Innovation Solution
A sidelink communication method that determines a sidelink ranging resource set configuration parameter and allocates sidelink ranging resources, allowing UEs to transmit sidelink ranging signals for positioning, using time-frequency resources and configuring periodic sidelink ranging resource sets through multiplexing in time or frequency division, enabling autonomous resource selection based on downlink signaling or pre-configured information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing NR sidelink communication systems use general-purpose channels and reference signals, then system complexity is reduced and ease of operation is improved, but ranging functionality cannot be achieved and measurement precision deteriorates
Solution Approach 1:
The patent segments the sidelink resource pool into dedicated ranging resource sets separated from general data transmission resources. This segmentation allows ranging functionality to be implemented without interfering with existing communication operations, adding versatility while maintaining manageable system complexity through structured resource division.
Solution Approach 2:
The patent designs sidelink ranging signals that can serve multiple purposes: they enable distance and angle measurements for positioning while also functioning as communication signals between UEs. This multi-functionality achieves ranging capability without requiring entirely separate dedicated infrastructure, thus improving adaptability while controlling complexity.
2Measurement precision
If dedicated sidelink ranging resources are allocated, then ranging precision is improved, but resource overhead increases and system complexity worsens
Solution Approach 1:
The patent applies local quality by allocating dedicated ranging resources only in specific time-frequency regions where ranging measurements are needed, rather than dedicating resources across the entire spectrum. This allows high measurement precision in ranging operations while minimizing overall resource overhead by confining dedicated resources to localized areas of the resource pool.
Solution Approach 2:
The patent implements partial action by providing dedicated ranging resources only when ranging functionality is required, rather than allocating full dedicated resources continuously. The system can dynamically adjust the extent of dedicated resource allocation based on actual ranging needs, achieving sufficient measurement precision without excessive resource consumption.
3Ease of operation
If UEs autonomously select sidelink ranging resources, then ease of operation is improved for out-of-coverage scenarios, but resource coordination becomes difficult and interference increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring resource pools and ranging resource set structures before UEs need to perform autonomous selection. This preliminary setup provides a framework that guides autonomous resource selection, making it easier for UEs to operate independently while maintaining better resource coordination and reducing interference through pre-established rules.
Data Source
AI summary
A sidelink communication method that can include determining a sidelink ranging resource set configuration parameter, on the basis of the sidelink ranging resource set configuration parameter, determining a sidelink ranging resource, and by means of the sidelink ranging resource, transmitting a sidelink ranging signal.