UE-Specific PRS Configuration for Adaptive Positioning Accuracy
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Solution Overview
Problem
Existing cellular networks provide a single PRS configuration for all users, failing to meet the diverse positioning demands of different users regarding accuracy and delay, leading to suboptimal positioning performance.
Innovation Solution
Implementing a UE-specific PRS configuration determined by the LMF or UE, allowing for tailored PRS settings based on individual user needs, separate from the cell-specific configuration, to enhance positioning accuracy and meet specific user demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cell-specific PRS configuration is used for all users, then the system complexity is reduced and ease of operation is improved, but the positioning accuracy and adaptability to different user demands deteriorate
Solution Approach 1:
The patent segments the PRS configuration into two distinct types: cell-specific PRS configuration (common for all users) and UE-specific PRS configuration (customized for individual users). This segmentation allows the system to maintain a simple common configuration while providing customized configurations for users with specific positioning demands, thereby resolving the contradiction between ease of operation and positioning accuracy.
Solution Approach 2:
The patent applies local quality by providing differentiated PRS configurations tailored to specific user equipment needs. Instead of applying a uniform configuration across all users, the system selectively applies UE-specific configurations to users who require enhanced positioning accuracy, while other users continue to use the cell-specific configuration. This localized customization resolves the contradiction by improving accuracy only where needed.
2Device complexity
If a single PRS configuration is provided for all users, then the device complexity is reduced, but the adaptability to different positioning demands deteriorates
Solution Approach 1:
The patent divides the PRS configuration system into two independent but complementary parts: cell-specific configuration (maintaining simplicity) and UE-specific configuration (providing adaptability). This segmentation allows the system to keep the overall structure relatively simple while enabling customized configurations for different users with different positioning demands.
Solution Approach 2:
The patent creates a universal PRS configuration framework that can serve multiple purposes: the cell-specific configuration serves as a baseline for all users, while UE-specific configurations can be applied selectively to meet diverse positioning demands. This multi-functionality approach allows a single configuration system to handle both simple and complex positioning requirements.
3Measurement precision
If UE-specific PRS configuration is implemented for all users, then positioning accuracy and individual demand satisfaction are improved, but the system complexity and signaling overhead increase
Solution Approach 1:
The patent applies local quality by providing UE-specific PRS configurations only to users who have specific positioning demands that cannot be met by the cell-specific configuration. Users with standard positioning needs continue to use the simpler cell-specific configuration, thereby avoiding unnecessary complexity while maintaining high accuracy for users who require it.
Solution Approach 2:
The patent implements partial action by selectively applying UE-specific configurations only to the extent necessary - i.e., only for users whose positioning demands are not met by the cell-specific configuration. This avoids the excessive complexity that would result from applying UE-specific configurations to all users, while still achieving the necessary positioning accuracy for those who need it.
Data Source
AI summary
A positioning reference signal (PRS) configuration method, performed by a location management function (LMF) includes: determining a user equipment (UE) specific positioning reference signaling (PRS) configuration for the UE in response to determining that a cell specific PRS configuration used for positioning of the UE does not meet positioning demands of the UE; and sending the determined UE specific PRS configuration.