Dynamic shielding to secure multi-hop communications in vehicular platoons

Abstract Vehicular platoons are among the most advanced driving assistance systems that may generate considerable fuel savings and increase traffic efficiency. However, communication between vehicles in a platoon is always vulnerable to eavesdropping due broadcast nature of wireless channels. To address this issue, we investigate security issues from physical layer perspective for multi-hop vehicular platooning. The dynamic shielding secured transmission scheme proposed guarantee confidential private information. Specifically, neighboring can alternately act as friendly shielders, which transmit jamming signals interfere with eavesdroppers without knowing channel state information, thus secrecy capacity would increase. mathematical derivation obtained performance analysis. Meanwhile, numerical results verify properties, efficiency, adaptability scheme.