Abstract
Due to the potentials in promoting the driving safety and easing the traffic congestion, vehicular networks, especially vehicle-to-vehicle (V2V) communications, have recently been receiving much attention. The data dissemination protocol for V2V applications should not only provide end-to-end transmissions with low error probability and high throughput but also offer antieavesdropping capabilities. To achieve this goal, we in this paper propose a secrecy-enhanced relaying protocol for vehicular environments. Based on the network topology and the velocity of the moving vehicles, the proposed scheme first generates the relay candidate set, from which a single relay is then selected opportunistically to assist the source. By using the superposition coding strategy, the selected relay jointly sends the source message and the artificial interference to enable secure communications. We derive the tight closed-form expressions for the upper and lower bounds of the secrecy outage probability, based on which we analyze the diversity order of the system. The method to generate the interference signal is introduced, and the choice of superposition weight factor is also given. The analytical and simulation results show that the proposed relay-aided protocol yields a better performance than the competing alternatives in terms of both the secrecy performance and the implementation complexity.
Highlights
In the last few years, we have witnessed a large increase in the number of vehicles and critical traffic accidents as well
These two factors make the wireless communications for vehicular networks error-prone, which indicates the necessity for developing novel protocols to support the stringent QoS requirements in vehicular environments
A relay-aided data dissemination protocol is presented for vehicular networks with secrecy constraints
Summary
In the last few years, we have witnessed a large increase in the number of vehicles and critical traffic accidents as well. The existence of the obstacles such as buildings, trees, and traffic lights will lead to poor channel quality These two factors make the wireless communications for vehicular networks error-prone, which indicates the necessity for developing novel protocols to support the stringent QoS requirements in vehicular environments. The developed PHY-security methods in [28, 29] are effective in improving the secrecy performance of relay systems, none of them take the characteristic of the vehicular networks into consideration Besides that, in these schemes, the channel state information (CSI) regarding the eavesdropping link is assumed to be available, which may not hold for vehicular applications. A secrecy-enhanced data dissemination protocol is proposed in this paper for vehicular networks, using relay transmission and cooperative jamming techniques.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Distributed Sensor Networks
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
