Antenna Tilt Adjustment Using Spatial User Distribution

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Solution Overview

Problem

Existing methods for optimizing antenna tilt angles in vertically sectorized cells rely on trial and error, leading to inefficient and time-consuming processes, often resulting in incorrect decisions and prolonged optimization times due to the lack of a prior understanding of user equipment spatial distribution.

Innovation Solution

A method that determines an optimized tilt angle for a beam emitted from an antenna in a vertically sectorized cell by using a-priori knowledge of the spatial distribution of user equipment, obtained through dedicated measurements and signal analysis, allowing for precise and rapid adjustment of beam tilt angles without physical antenna reorientation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If trial and error methods are used to optimize antenna tilt angles, then optimization can be performed without prior spatial distribution data, but the optimization process becomes time-consuming and inefficient

Engineering Contradiction:

Improveability to optimize without prior spatial dataVSAvoidoptimization time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent performs spatial distribution measurement and analysis before optimizing antenna tilt angles. By obtaining a-priori knowledge of user equipment spatial distribution through dedicated measurements and signal analysis, the system prepares optimization data in advance, eliminating the need for time-consuming trial and error processes during actual optimization.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If trial and error optimization is performed, then no prior spatial distribution information is needed, but incorrect decisions are made and optimization accuracy decreases

Engineering Contradiction:

Improveindependence from spatial distribution dataVSAvoidoptimization accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The system performs preliminary spatial distribution analysis by configuring user equipments with dedicated measurements, collecting measurement data, and analyzing spatial distribution patterns before optimization. This a-priori knowledge provides accurate information about user equipment locations, enabling precise tilt angle optimization decisions rather than relying on inaccurate trial and error methods.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP3097716B1Determining an adjustment of a tilt angle for an antenna serving a vertically sectorized cell of a radio network

Publication Date: 2019.03.06 NOKIA SOLUTIONS & NETWORKS OY

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AI summary

There is provided a method and an apparatus for determining an adjustment of a tilt angle (α1, α2) for a beam emitted from an antenna (130) of a base station (100) which is serving a vertically sectorized cell (150) of a cellular radio telecommunication network. The method comprises (a) configuring user equipments (162, 164) being located in the vertically sectorized cell (150) with dedicated measurements, (b) collecting the dedicated measurements for a specific time interval, (c) obtaining a spatial user equipment distribution among a first sector (152) of the cell (150) and a second sector (154) of the cell (150) based on the collected dedicated measurements, (d) ascertaining an optimized spatial overlap region between the first sector (152) and the second sector (154) based on the obtained spatial user equipment distribution, and (e) determining the adjustment of the tilt angle (α1, α2) based on the ascertained optimized spatial overlap region.