Resilient UAVs Location Sharing Service Based on Information Freshness and Opportunistic Deliveries

TL;DR

This paper introduces FlySafe, a resilient UAV location sharing service that maintains spatial awareness and device discovery accuracy despite false location injections, using opportunistic delivery and information freshness.

Contribution

FlySafe is a novel location service for UAVs that enhances resilience to false data and improves spatial awareness through opportunistic methods and freshness metrics.

Findings

Achieved 94.15% spatial awareness in simulations.

Resilient to false location injections.

94.53% device discovery accuracy with <2m error.

Abstract

Unmanned aerial vehicles (UAV) have been recognized as a versatile platform for a wide range of services. During the flight, these vehicles must avoid collisions to operate safely. In this way, they demand to keep spatial awareness, i.e., to know others in their coverage area. However, mobility and positioning aspects hamper building UAV network infrastructure to support reliable basic services. Thus, such vehicles call for a location service with up-to-date information resilient to false location injection threats. This work proposes FlySafe, a resilient UAVs location sharing service that employs opportunistic approaches to deliver UAVs' location. FlySafe takes into account the freshness of UAVs' location to maintain their spatial awareness. Further, it counts on the age of the UAV's location information to trigger device discovery. Simulation results showed that FlySafe achieved spatial awareness up to 94.15% of UAV operations, being resilient to~false locations injected in the network. Moreover, the accuracy in device discovery achieved 94.53% with a location error of less than 2 m.