Network Node Beam Configuration for 5G Localization Accuracy
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Solution Overview
Problem
In 5G wireless networks, high frequency links face challenges in maintaining beam alignment due to user movement and environmental blockages, requiring efficient localization and resource management to optimize antenna beam configuration.
Innovation Solution
A network node configures high frequency beams based on the accuracy of user node localization at low frequency, adjusting beam parameters such as number and width to optimize resource usage and interference, by tracking the rate of change of the radio beacon signal and incorporating movement measurement values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high frequency narrow beams are used for localization, then localization accuracy is improved, but resource usage and interference increase
Solution Approach 1:
The patent dynamically adjusts beam parameters (number of beams, beam width) based on the determined localization accuracy from low frequency measurements. This allows the system to optimize resource usage by using narrower, more focused beams only when high precision is needed, while using wider, fewer beams when lower precision suffices, thus resolving the contradiction between localization accuracy and resource consumption
Solution Approach 2:
The system changes key parameters (beam width, number of beams) based on the determined accuracy value. When low frequency localization accuracy is high, the system reduces the number of high frequency beams and increases beam width, thereby reducing resource usage while maintaining sufficient localization performance
2Measurement precision
If more high frequency beams are used for localization, then beam alignment accuracy is improved, but network resource usage and interference increase
Solution Approach 1:
The system dynamically adapts the number and configuration of high frequency beams based on the low frequency localization accuracy. When accuracy is sufficient, fewer beams are used, which directly reduces network interference while maintaining adequate beam alignment performance
Solution Approach 2:
The system uses low frequency localization results as a coarse approximation or 'copy' of the true position, then refines this with a reduced set of high frequency beams. This two-stage approach achieves good beam alignment with fewer high frequency beams, thereby reducing interference
3Quantity of substance
If low frequency links are used for coarse localization, then resource usage is reduced, but localization accuracy decreases
Solution Approach 1:
The localization process is segmented into two stages: first, low frequency links provide coarse localization; second, high frequency beams provide fine-tuned positioning. This segmentation allows each frequency band to be used for its optimal purpose, balancing resource usage and accuracy
Solution Approach 2:
Low frequency localization is performed as a preliminary step to establish a coarse position estimate before initiating high frequency beam-based localization. This preliminary action reduces the search space for high frequency beams, improving overall efficiency while maintaining accuracy
Data Source
AI summary
A network node for a wireless communication system is configured to localize a user node in a first localization operation carried out at a first frequency; determine an accuracy value associated with the first localization operation; and adjust at least one beam parameter for radio beams to be used in a second localization operation based on the determined accuracy value, the second localization operation carried out at a second frequency that is greater than the first frequency. The network node is configured to determine the accuracy value associated with the first localization operation by tracking a rate of change of an angle of a radio beacon signal transmitted from the user node relative to the network node.