Dynamic PRS Configuration Selection for Precise 5G Positioning
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Solution Overview
Problem
Existing PRS configurations in 5G R16 are static, which limits positioning precision and increases system overheads, necessitating a dynamic configuration to meet high-precision requirements while reducing signaling overheads.
Innovation Solution
A method for processing PRS configurations involves sending multiple sets of configurations to a base station or TRP, each set tailored for UE positioning, allowing selection of the most suitable configuration based on current needs, thereby optimizing positioning precision and reducing overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If static PRS configurations are used, then system overheads are reduced, but positioning precision deteriorates
Solution Approach 1:
The patent applies dynamics by enabling the base station to select from multiple pre-configured PRS configuration sets based on current positioning requirements. Instead of using a fixed static configuration, the system dynamically switches between different configuration sets (e.g., different PRS resources, frequency offsets, or time patterns) to match the actual positioning needs, thereby improving precision without permanently increasing system overhead.
Solution Approach 2:
The patent implements parameter changes by defining multiple PRS configuration sets with different parameters (such as different PRS resource allocations, frequency domain offsets, or time domain patterns). The base station changes the active configuration parameters according to the positioning requirements, allowing the system to optimize positioning precision by selecting appropriate parameter combinations without continuously signaling new configurations.
2Measurement precision
If multiple PRS configuration sets are transmitted, then positioning accuracy is improved, but signaling overheads increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple PRS configuration sets in advance and transmitting them to the base station before actual positioning operations. This allows the base station to have multiple ready-to-use configurations without requiring real-time signaling during positioning, thereby improving positioning accuracy while minimizing signaling overhead during critical operations.
Solution Approach 2:
The patent segments the PRS configuration into multiple discrete sets, each optimized for different positioning scenarios. Instead of transmitting a single comprehensive configuration or continuously updating configurations, the system divides the configuration space into separate sets that can be independently selected and activated, reducing the need for continuous signaling.
3Productivity
If dynamic PRS configuration selection is implemented, then positioning efficiency is enhanced, but device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the base station to autonomously select the appropriate PRS configuration set from the pre-configured options based on its understanding of current positioning requirements. The base station itself performs the configuration selection without requiring complex centralized control or additional signaling for configuration management, thereby improving positioning efficiency while keeping the system relatively simple.
Data Source
AI summary
A method for processing a position reference signal (PRS) configuration, includes: sending, by a location management function (LMF), first configuration information including a plurality of sets of PRS configurations, wherein the plurality of sets of PRS configurations correspond to a same base station or a same transmission reception point (TRP), and each of the plurality of sets of PRS configurations is configured for a positioning measurement of user equipment (UE).