OLSR-Based UAV Route Construction Method with Reservation of in-Flight and Crossing Links

Abstract

Unmanned aerial vehicles (UAVs) are attracting attention for applications such as delivery services. In dense UAV traffic, efficient route management is critical for safe navigation. We previously proposed a distributed UAV management system based on a virtual circuit concept, where UAV routes are established over a multi-hop wireless network formed by devices installed in individual houses. To avoid collisions, the system reserves both UAV routes and their crossing links. However, as the number of UAVs increases, link availability decreases, leading to frequent route construction failures. This letter proposes an improved method that reserves only the links currently used by UAVs in flight and their crossing links. Simulation results confirm the effectiveness of the proposed method.