Relative TRP Beam Configuration for Positioning Data Compression
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Solution Overview
Problem
The amount of assistance data needed for UE-based positioning in wireless networks is large, making timely delivery via available network resources costly and difficult.
Innovation Solution
Provision of relative beam configuration information for transmission reception points (TRPs) to user equipment (UEs), including azimuth and elevation angles, identifiers, and differential parameters, allowing UEs to estimate their position using network-assisted data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If absolute beam configuration information is provided for all TRPs, then UE positioning accuracy is improved, but network resource cost and data delivery complexity increase
Solution Approach 1:
The patent merges beam configuration information by providing absolute beam configuration for a subset of TRPs and relative beam configuration for other TRPs. This combining approach reduces the total data size while maintaining positioning accuracy, as the relative configurations can be derived from the absolute reference configurations.
Solution Approach 2:
The patent applies local quality by providing detailed absolute beam configuration information only for specific reference TRPs that are most critical for positioning, while using relative beam configuration for other TRPs. This selective approach optimizes the distribution of information quality across different TRPs based on their importance.
2Reliability
If complete beam configuration information is transmitted to all UEs, then positioning reliability is improved, but network resource consumption increases
Solution Approach 1:
The patent extracts only the essential absolute beam configuration information for reference TRPs and transmits it to UEs, while the remaining TRP configurations are derived through relative beam configuration parameters. This extraction approach provides sufficient positioning reliability without transmitting redundant complete information for all TRPs.
Solution Approach 2:
The patent segments the beam configuration information into two parts: absolute configuration for reference TRPs and relative configuration for other TRPs. This segmentation allows the network to transmit minimal necessary data while ensuring complete positioning information is available at the UE side through combination of both parts.
3Productivity
If relative beam configuration information is used for all TRPs, then network resource efficiency is improved, but positioning accuracy may deteriorate
Solution Approach 1:
The patent performs preliminary action by providing absolute beam configuration information for reference TRPs in advance, which serves as a foundation for deriving relative configurations. This preliminary provision of reference data ensures that subsequent relative configurations can be accurately interpreted, maintaining positioning accuracy while improving efficiency.
Data Source
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AI summary
Embodiments include methods, performed by a network node (or function), for providing positioning assistance data to one or more user equipment (UEs) in a wireless network. Suchmethods include determining relative beam configuration information for one or more transmission reception points (TRPs) in the wireless network based on absolute beam configuration information for one or more associated TRPs in the wireless network. Such methods also include transmitting, to one or more UEs, positioning assistance data including the relative beam configuration information for the one or more TRPs. Embodiments also include complementary methods performed by a UE, as well as network nodes (or functions) and UEs configured to perform such methods.