Mobility and Physical-Layer-Assisted Routing Protocol for UAV Networks in Jamming Environments
摘要
We consider flying ad hoc networks (FANETs) operating in jamming environment, where jammer significantly impairs the performance of routing protocols, leading to unstable network communications and data loss. To improve the performance of routing protocols in jamming environments, this paper proposes an enhanced OLSR protocol based on cross-layer optimization. The scheme proposed introduces the packet error rate and the packet losses caused by Acknowledgement Timeout as evaluation indicators of node network performance at the physical layer and link layer, and combines node mobility to evaluate the available communication time of nodes. A node willingness value calculation method that comprehensively considers communication time and network performance is designed to optimize the selection of MPR nodes. We implement the optimized protocol on the EXata simulation platform. Simulation results show that compared with the reference protocol, in the presence of jammer, the protocol can improve the packet delivery rate by 17% and reduce the overhead by 26%.