Sidelink Positioning Configuration via Network Intermediary
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Solution Overview
Problem
Current Sidelink positioning technologies face challenges in achieving accurate positioning for Vehicle to Everything (V2X) and Public Safety scenarios due to limitations in Positioning Reference Signal (PRS) configuration and resource allocation.
Innovation Solution
A method and apparatus for requesting positioning configuration information, where a target terminal transmits a request to a network side device for configuring PRS configuration information and/or transmission resources, enabling improved Sidelink positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If PRS configuration interaction is performed in Sidelink positioning, then positioning accuracy is improved, but system complexity increases
Solution Approach 1:
The network side device acts as an intermediary that centrally manages and coordinates PRS configuration information for multiple terminals. Instead of terminals directly negotiating complex positioning parameters with each other, the network side device receives positioning requests, determines appropriate PRS configurations, and distributes this information to relevant terminals, thereby improving positioning accuracy while managing system complexity centrally
Solution Approach 2:
The system dynamically adjusts PRS configuration parameters (such as time resources, frequency resources, and signal patterns) based on specific positioning requirements and network conditions. By changing these parameters adaptively rather than using fixed configurations, the system achieves higher positioning accuracy while optimizing resource usage and managing complexity
2Reliability
If PRS transmission resources are allocated for Sidelink positioning, then positioning performance is enhanced, but resource consumption increases
Solution Approach 1:
The PRS transmission resources are designed to serve multiple purposes simultaneously. The same time-frequency resources allocated for PRS transmission are also utilized for other Sidelink communications and network operations, reducing the need for dedicated exclusive resources for positioning while maintaining positioning performance
Solution Approach 2:
The system allocates PRS transmission resources selectively based on actual positioning needs rather than continuously or universally. PRS transmissions are activated only when positioning services are required for specific terminal pairs, and the resource allocation is optimized to provide just enough capacity for accurate positioning without excessive overhead
Data Source
AI summary
A positioning configuration information request method and a terminal are provided. The positioning configuration information request method includes: transmitting, by a target terminal, a first request to a first network side device. The first request is used for requesting the first network side device to configure first Positioning Reference Signal (PRS) configuration information or a first PRS transmission resource. The first PRS configuration information or the first PRS transmission resource is used for Sidelink positioning. The positioning configuration information request method further includes receiving, by the target terminal, a first response from the first network side device. The first response includes the first PRS configuration information or the first PRS transmission resource.