PRS Resource Configuration for Accurate Wireless Positioning
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Solution Overview
Problem
Certain wireless communications networks face limitations in positioning reliability and accuracy.
Innovation Solution
Implementing methods and apparatuses for configuring positioning reference signal resources, including determining and transmitting positioning assistance data to enable accurate location estimates, and enabling/disabling sets of positioning reference signals based on user equipment location, with dynamic PRS configurations and hybrid positioning frameworks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If positioning reference signal resources are configured for all user equipment, then positioning coverage is improved, but network signaling overhead and resource waste increase
Solution Approach 1:
The patent segments positioning reference signal resources by grouping user equipment based on their positioning requirements and characteristics. Different PRS resource configurations are assigned to different groups, allowing the system to provide comprehensive positioning coverage only where needed rather than universally to all devices, thus reducing overall signaling overhead while maintaining positioning reliability for target users.
Solution Approach 2:
The patent implements local quality by providing enhanced positioning reference signal resources specifically to user equipment that requires high positioning accuracy (such as emergency services or location-based applications), while using minimal or no PRS resources for devices that do not require positioning. This targeted approach improves positioning reliability for critical applications without generating unnecessary signaling overhead across the entire network.
2Measurement precision
If positioning reference signal resources are configured for all user equipment, then positioning accuracy is improved, but network resource waste increases
Solution Approach 1:
The patent employs dynamic PRS resource configuration where the allocation of positioning reference signal resources is adjusted in real-time based on user equipment's current positioning needs, mobility state, and service requirements. This dynamic adaptation ensures high positioning accuracy is maintained only when and where necessary, preventing permanent allocation of PRS resources to all devices and thereby reducing overall network resource consumption.
Solution Approach 2:
The patent changes key parameters of PRS resources (such as bandwidth, periodicity, and power allocation) based on the specific positioning requirements of different user equipment groups. By adjusting these parameters dynamically rather than using fixed high-accuracy configurations for all devices, the system maintains positioning accuracy for users who need it while significantly reducing the total quantity of network resources consumed.
3Adaptability or versatility
If dynamic positioning reference signal configuration is implemented, then positioning adaptability is improved, but system complexity increases
Solution Approach 1:
The patent implements self-service mechanisms where user equipment autonomously reports its positioning requirements, mobility characteristics, and service needs to the network. Based on this self-reported information, the network automatically configures appropriate PRS resources without requiring complex manual intervention or centralized control for each device. This self-service approach enhances positioning adaptability while keeping system complexity manageable by leveraging the capabilities of the user equipment itself.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for positioning reference signal resource configuration. One method includes receiving, at a location server, a positioning reference signal resource configuration from at least one base station. The method includes determining positioning assistance data based on the positioning reference signal resource configuration. The positioning assistance data includes the positioning reference signal resource configuration for performing measurements and/or performing computation of a location estimate. The method includes transmitting the positioning assistance data to a user equipment or to a target device to enable the user equipment or the target device to perform the measurements and/or perform the computation of the location estimate.