Sidelink Positioning Partial Sensing for Power-Efficient Resource Selection
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Solution Overview
Problem
Existing wireless communication systems, particularly in 5G, face challenges in efficiently performing sidelink positioning for vehicles and pedestrians outside network coverage, with limited resources and power efficiency being key issues.
Innovation Solution
A method for sidelink positioning that involves determining sets of resources for sidelink positioning, configuring partial sensing, and selecting optimal resources based on sensing results, facilitated by a UE or location server, to enhance positioning accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If full sensing of all resources is performed for sidelink positioning, then positioning accuracy is improved, but power consumption and processing complexity increase significantly
Solution Approach 1:
The patent applies partial sensing by selecting and sensing only a subset of resources (e.g., first set of resources) instead of all available resources for sidelink positioning. This partial action approach maintains acceptable positioning accuracy while significantly reducing power consumption and processing requirements compared to full sensing of all resources.
Solution Approach 2:
The patent segments the resource sensing process into multiple stages or subsets. Resources are divided into different sets (first set, second set, etc.), and sensing is performed selectively on specific segments based on positioning requirements, thereby reducing overall sensing complexity and energy usage while maintaining positioning performance.
2Measurement precision
If comprehensive resource sensing is performed for sidelink positioning, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent implements partial sensing where the UE performs sensing operations on only a portion of available resources rather than comprehensively sensing all resources. This reduces the computational burden and device complexity while maintaining sufficient positioning accuracy for the application requirements.
Solution Approach 2:
The sensing process is segmented into manageable subsets of resources. The UE divides the resource space into multiple sets and performs sensing on selected sets, thereby breaking down the complex full-resource sensing task into simpler, more manageable operations that reduce overall device complexity.
3Reliability
If all resources are allocated for sidelink positioning, then positioning reliability is improved, but resource utilization efficiency decreases
Solution Approach 1:
The patent employs partial resource allocation for sensing operations. Instead of allocating and sensing all available resources, the UE performs partial sensing on selected resources that are sufficient for achieving reliable positioning. This improves resource utilization efficiency while maintaining positioning reliability through intelligent resource selection.
Solution Approach 2:
The patent introduces dynamic resource selection where the UE adaptively chooses which resource sets to sense based on current positioning requirements, channel conditions, and traffic patterns. This dynamic approach optimizes the balance between positioning reliability and resource utilization efficiency, allowing the system to use only the necessary resources at any given time.
Data Source
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AI summary
Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) may determine one or more sets of time, frequency, and/or spatial resources for sidelink positioning. The UE may determine a partial sensing configuration for sidelink positioning. The UE may perform partial sensing of the one or more sets resources for sidelink positioning according to the partial sensing configuration. Based on the results of the partial sensing, the UE may select a first set of resources for sidelink positioning from the one or more sets of resources for sidelink positioning, for use by the UE or another entity, for transmitting sidelink positioning reference signals. In another aspect, a location server may determine a selection window configuration that specifies a selection window and periodicities to be used for partial sensing of one or more sets of resources for sidelink positioning, and send the selection window configuration to a UE.