Beam Angular Resolution Signaling for UE Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing techniques for providing assistance data for UE-based positioning in wireless networks face challenges in efficiently delivering large amounts of accurate angular information, which can be costly and difficult to deliver in a timely manner.
Innovation Solution
The proposed solution involves determining the angular resolution of positioning assistance data for each beam in a wireless network and transmitting it in two parts: a first part with a coarse resolution and an optional second part with a finer resolution, depending on the accuracy known by the network node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If large amounts of accurate angular information are provided for UE-based positioning, then positioning accuracy is improved, but signaling overhead and network resource usage increase
Solution Approach 1:
The angular positioning assistance data is divided into two separate parts: a first part containing angular information at a first (coarser) resolution, and a second part containing angular information at a second (finer) resolution. This segmentation allows the network to selectively provide only the necessary precision level, reducing overall signaling overhead while maintaining positioning accuracy when needed.
Solution Approach 2:
Different beams are assigned different resolution levels based on local requirements. The network determines the angular resolution needed for each particular beam individually, providing finer resolution only where necessary for accurate positioning, rather than uniformly providing high-resolution data for all beams. This local optimization reduces total signaling overhead while maintaining positioning accuracy where required.
2Measurement precision
If high-resolution angular positioning data is transmitted for all beams, then positioning accuracy is improved, but network resource usage and transmission cost increase
Solution Approach 1:
The patent changes the resolution parameter of angular information based on beam-specific requirements. Instead of using a fixed high resolution for all beams, the network adjusts the angular resolution parameter individually for each beam, transmitting finer resolution data only when the determined angular resolution for that beam exceeds the first resolution threshold. This dynamic parameter adjustment reduces network resource consumption while maintaining positioning accuracy.
3Measurement precision
If detailed angular information is provided for each beam, then UE positioning accuracy is improved, but the complexity of data management and transmission increases
Solution Approach 1:
The positioning assistance data structure is segmented into two distinct parts with different resolution levels. This segmentation simplifies data management by organizing information hierarchically - the first part provides baseline angular information for all beams, while the second part provides supplemental finer-resolution data only where needed. This structured approach reduces the overall complexity compared to managing uniform high-resolution data for all beams.
Data Source
AI summary
Embodiments include methods, performed by a network node, for providing positioning assistance data to one or more user equipment (UEs) in a wireless network. Such methods include determining an angular resolution of angular positioning assistance data for each particular beam of a plurality of beams transmitted by one or more transmission reception points (TRPs) in the wireless network. Such methods also include transmitting, to one or more UEs, the angular positioning assistance data for the plurality of beams. For each particular beam, the angular positioning assistance data includes a first part having a first resolution and, when the determined angular resolution for the particular beam is greater than the first resolution, a second part having a second resolution that is greater than the first resolution. Other embodiments include complementary methods performed by a UE, as well as network nodes and UEs configured to perform such methods.