Reference Node Configuration for Positioning Accuracy
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately determining the location of user equipment (UE) due to limitations in existing positioning methods, which often rely on precise time synchronization and are susceptible to errors from group delay issues and signal obstructions.
Innovation Solution
Configuring a UE to operate as a reference node, allowing it to provide additional positioning measurements and compensate for group delays by transmitting and receiving positioning reference signals, thereby enhancing the accuracy of network-based positioning methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing positioning methods are used, then network-based positioning can be achieved, but accuracy is limited due to group delay errors and signal obstructions
Solution Approach 1:
A reference node is introduced as an intermediary device between the network and the user equipment. This reference node, located at a known position, measures positioning reference signals from multiple network nodes and provides compensation information to correct group delay errors and improve positioning accuracy for UEs in challenging environments.
Solution Approach 2:
The reference node continuously monitors positioning reference signals and provides feedback information about signal characteristics and group delays to the network. This feedback enables the network to compensate for timing errors and improve the accuracy of location estimates for user equipment.
2Measurement precision
If reference node configuration options are provided to network entities, then positioning accuracy can be improved, but device complexity increases
Solution Approach 1:
The reference node is pre-configured with its known location information and positioning capabilities before being activated. The network entity receives capability information from the reference node in advance, allowing the system to be set up with necessary configuration options without requiring complex real-time configuration decisions during positioning operations.
Data Source
AI summary
Techniques are provided for configuring a user equipment (UE) to operate as a reference node. An example method of operating a user equipment as a reference node includes providing an indication of one or more reference node configuration options to a network entity, the one or more reference node configuration options comprising a registration configuration option indicating the user equipment is registered on a network as a reference node and a regular user equipment, receiving an indication to obtain positioning measurements based on the one or more reference node configuration options, obtaining one or more positioning measurements, and reporting the one or more positioning measurements to a positioning entity.