Stratos: A Resilient LoRa Mesh Communication Network for Disaster Zones

Author(s)	Mr. Tejendra Sai Kadiyala, Ms. Naga Sujini G
Country	India
Abstract	In disaster scenarios, conventional communication infrastructure such as cell towers, internet lines often collapses, isolating victims and hindering rescue coordination. Stratos: A Resilient LoRa Mesh Communication Network for Disaster Zones proposes a decentralized, self-organizing communication framework designed to operate without external connectivity. The system utilizes LoRa mesh networking to form multi-hop communication links between portable nodes, ensuring message delivery even if individual nodes fail. A Raspberry Pi-based gateway aggregates local data and hosts a Wi-Fi captive portal, enabling civilians to send SOS messages directly from smartphones without internet access. Integrated BLE beacons assist in device discovery and crowd density estimation, while TinyML based prioritization classifies messages by urgency and ensures critical alerts are transmitted first. All messages are geotagged for offline map visualization, helping rescuers track affected regions in real time. By combining low-power wireless networking, local intelligence, Project Stratos delivers a scalable, life-saving communication solution for disaster-hit environments.
Keywords	LoRa Mesh Network, Disaster Communication, TinyML, Wi-Fi Captive Portal, BLE Beacons, Offline Mapping, Emergency Response.
Field	Computer > Electronics
Published In	Volume 17, Issue 2, April-June 2026
Published On	2026-04-27

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