The Role of Legacy Mobile Networks in Infrastructure Resilience: Evidence from the Southern Brazil Flood

• URL: http://arxiv.org/abs/2509.08595v1
• Date: Wed, 10 Sep 2025 13:48:38 GMT
• Title: The Role of Legacy Mobile Networks in Infrastructure Resilience: Evidence from the Southern Brazil Flood
• Authors: Daniel Meyer, Lisandro Z Granville, Leandro M. Bertholdo,
• Abstract summary: The study identifies the leading causes of mobile network disruptions, primarily related to flooding and prolonged power outages.<n>Results reveal the significant vulnerability of modern networks (4G/5G) during the event and the essential role played by legacy technologies (2G/3G) in sustaining basic connectivity under adverse conditions.
• Score: 1.330057826180996
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: This paper investigates the resilience of mobile communication networks during the extreme flooding that affected Rio Grande do Sul, Brazil, in May 2024. Based on regulatory data and technical insights from operators, the study identifies the leading causes of mobile network disruptions, primarily related to flooding and prolonged power outages. The results reveal the significant vulnerability of modern networks (4G/5G) during the event and the essential role played by legacy technologies (2G/3G) in sustaining basic connectivity under adverse conditions. The findings underscore the necessity of disaster-aware infrastructure planning, taking into account the ongoing significance of legacy systems, diversified power supply strategies, and resilient network designs to enhance service continuity during future crises.

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