Aerial UE Positioning Assistance Data Segmentation
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Solution Overview
Problem
Current wireless communication systems, particularly 5G NR, face challenges in accurately positioning aerial user equipment (UEs) due to the lack of distinct positioning assistance data, which can lead to suboptimal performance as aerial UEs rely on terrestrial UE-specific data, resulting in inadequate signal strength and coverage.
Innovation Solution
Broadcasting separate positioning assistance data for aerial UEs, including specific information on Transmission Reception Points (TRPs), resource sets, and resources, to differentiate from terrestrial UE data, ensuring accurate positioning by prioritizing aerial-specific parameters and configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If aerial UEs use terrestrial UE-specific positioning assistance data, then the system maintains simplicity in data broadcasting, but positioning accuracy and signal strength deteriorate for aerial UEs
Solution Approach 1:
The positioning assistance data is segmented into separate information elements for aerial UEs and terrestrial UEs. The network entity obtains and broadcasts distinct positioning assistance data sets, with aerial-specific data including parameters optimized for aerial positioning such as aerial TRP information and aerial-specific resource configurations, while terrestrial UE data maintains the conventional structure. This segmentation allows aerial UEs to access tailored assistance data without increasing overall system complexity.
Solution Approach 2:
Different quality and characteristics of positioning assistance data are provided locally for different UE types. Aerial UEs receive positioning assistance data with properties specifically suited for aerial positioning (such as elevated TRP locations, aerial-optimized signal parameters), while terrestrial UEs continue to receive data optimized for ground-level positioning. This local quality differentiation resolves the contradiction by providing specialized data where needed without complicating the overall system.
2Reliability
If separate positioning assistance data for aerial UEs is broadcast, then positioning reliability and signal strength improve, but the complexity of data management and broadcasting increases
Solution Approach 1:
The positioning assistance data is segmented into separate information elements for aerial UEs and terrestrial UEs. The network entity obtains and broadcasts distinct positioning assistance data sets, with aerial-specific data including parameters optimized for aerial positioning such as aerial TRP information and aerial-specific resource configurations, while terrestrial UE data maintains the conventional structure. This segmentation allows aerial UEs to access tailored assistance data without increasing overall system complexity.
Solution Approach 2:
The network entity acts as an intermediary that manages the acquisition, differentiation, and broadcasting of separate positioning assistance data for aerial and terrestrial UEs. This intermediary function centralizes the complexity of managing multiple data sets, allowing the network to handle aerial-specific parameters and configurations while presenting simplified, type-appropriate data to each UE category, thereby improving reliability without proportionally increasing operational complexity.
3Area of stationary object
If aerial-specific positioning parameters are provided, then coverage and signal strength for aerial UEs improve, but the quantity of broadcast information increases
Solution Approach 1:
Different quality and characteristics of positioning assistance data are provided locally for different UE types. Aerial UEs receive positioning assistance data with properties specifically suited for aerial positioning (such as elevated TRP locations, aerial-optimized signal parameters), while terrestrial UEs continue to receive data optimized for ground-level positioning. This local quality differentiation resolves the contradiction by providing specialized data where needed without complicating the overall system.
Solution Approach 2:
The positioning assistance data structure is designed with universal components that can serve both aerial and terrestrial UEs, combined with aerial-specific extensions. Common parameters such as basic TRP locations and general resource configurations are shared across both UE types, while aerial-specific parameters (elevated TRP information, aerial-optimized signal characteristics) are added only where needed for aerial coverage. This multi-functionality approach expands coverage to aerial UEs without proportionally increasing the total information volume.
Data Source
AI summary
Positioning assistance data is broadcast by Transmission Reception Points (TRPs) that includes information that is specific for aerial user equipment (UEs) and information that is for terrestrial UEs. The positioning assistance data may be included in positioning System Information Blocks (posSIBs), and the information for the aerial UEs and information for the terrestrial UEs may be provided together in the posSIB or may be provided in separate posSIBs. The positioning assistance data, for example, may separately list, e.g., the TRPs, resource sets, or resources to be used for positioning aerial UEs.