Cell Antenna Direction Analysis for Misalignment Detection

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Solution Overview

Problem

Antennas in cellular communication networks may not be pointing to the correct directions, leading to unreliable network performance analysis and maintenance operations.

Innovation Solution

An automated method for analyzing antenna directions by calculating a characteristic user direction and comparing it to the antenna azimuth direction, indicating an anomaly if the difference exceeds a pre-set threshold angle, using network-related data such as handover and user equipment data to identify misalignments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual checking of antenna directions is performed, then accuracy in identifying misaligned antennas can be ensured, but time consumption and operational effort increase significantly

Engineering Contradiction:
Improveantenna direction accuracyVSAvoidtime consumption
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The system enables automated self-diagnosis of antenna alignment by having the base station automatically calculate characteristic user directions from network data (handover data, user equipment locations) and compare them against configured antenna azimuth directions, eliminating the need for manual field measurements and inspections

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical inspection methods with an automated computational system that uses network operational data and mathematical calculations to determine antenna direction accuracy, substituting human effort with algorithmic processing

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If automated analysis method is implemented, then time and effort are saved, but complexity of the analysis system increases

Engineering Contradiction:
Improveanalysis efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The system leverages existing multi-functional network elements (base stations that already perform handover management and user equipment location tracking) to also perform antenna direction analysis, avoiding the need for dedicated specialized hardware and minimizing system complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces a software module or processing unit that acts as an intermediary between existing network data sources and the analysis requirements, translating available network data into characteristic user directions without requiring fundamental changes to the network infrastructure

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If automated analysis is performed continuously, then network quality is maintained, but energy consumption increases

Engineering Contradiction:
Improvenetwork qualityVSAvoidenergy consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system performs antenna direction analysis periodically or on-demand based on triggering events (such as handover operations or changes in network conditions) rather than continuously, reducing energy consumption while maintaining network quality through regular monitoring intervals

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system maintains continuous network operation and quality by using always-available network data (handover data, user equipment locations) that are continuously generated by normal network operations, eliminating the need for separate continuous measurement campaigns

Inventive Principle:
Principle #20Continuity of useful action

Data Source

PatentUS12476722B2Method for analysing antenna directions in a communication network
Publication Date: 2025.11.18 ELISA OYJ
  • US12476722B2 patent drawing
  • US12476722B2 patent drawing
  • US12476722B2 patent drawing

AI summary

A computer implemented method for analysing antenna directions in a communications network. The method includes at least obtaining network related data; calculating a characteristic user direction of a first cell of a first base station; calculating a difference between the characteristic user direction and the antenna azimuth direction of the first cell; and responsive to detecting that the calculated difference is greater than a pre-set threshold angle, indicating an anomaly in the first cell.