Security is one of the most critical issues to Vehicular Ad-hoc Networks (VANETs) since the information transmitted is asynchronous and distributed. Vulnerability and instability are two of the challenges remain to be...Security is one of the most critical issues to Vehicular Ad-hoc Networks (VANETs) since the information transmitted is asynchronous and distributed. Vulnerability and instability are two of the challenges remain to be addressed by the research community and the industry. In this paper, we first proposed a trust reliability based model and extended the GPSR protocol to TM-GPSR protocol. Then, we improved the LET-GPSR protocol based on the link connection time prediction. On this basis, combined the decision index of the TM-GPSR and LET-GPSR protocols, we proposed the RC-GPSR routing protocol. We built the standard testing platform on the NS2 and SUMO, the average end-to-end delay and packet delivery rate of GPSR protocol and the three updates protocols under different node density, node speed, and malicious node ratio are simulated and evaluated. The results showed that under the same conditions, compared with GPSR protocol, RC-GPSR protocol has a lower average end-to-end delay and a higher packet delivery rate, which effectively improves the link stability and security.展开更多
Sensor networks are composed of large number of densely deployed sensor nodes.Nodes of sensor networks are usually powered by batteries.Sensor nodes need to work in a physically insecure environment.The nodes are susc...Sensor networks are composed of large number of densely deployed sensor nodes.Nodes of sensor networks are usually powered by batteries.Sensor nodes need to work in a physically insecure environment.The nodes are susceptible to various types of active attacks namely selective forwarding and sinkhole attacks in such environment.These attacks infuse malevolent packets by compromising the node.Geographical routing protocols of wireless sensor networks have been developed without considering the security and energy aspects against these attacks.In this paper,a secured routing protocol named trust based energy aware greedy perimeter stateless routing protocol(TEGPSR)is proposed for mobile sensor networks by incorporating trust based mechanism in energy aware greedy perimeter stateless routing protocol(EGPSR).Simulation results prove that TEGPSR outperforms the EGPSR by reducing overhead and improving the delivery ratio of the networks.展开更多
基金financially supported by the National Natural Science Foundation of China (No. 62106060)
文摘Security is one of the most critical issues to Vehicular Ad-hoc Networks (VANETs) since the information transmitted is asynchronous and distributed. Vulnerability and instability are two of the challenges remain to be addressed by the research community and the industry. In this paper, we first proposed a trust reliability based model and extended the GPSR protocol to TM-GPSR protocol. Then, we improved the LET-GPSR protocol based on the link connection time prediction. On this basis, combined the decision index of the TM-GPSR and LET-GPSR protocols, we proposed the RC-GPSR routing protocol. We built the standard testing platform on the NS2 and SUMO, the average end-to-end delay and packet delivery rate of GPSR protocol and the three updates protocols under different node density, node speed, and malicious node ratio are simulated and evaluated. The results showed that under the same conditions, compared with GPSR protocol, RC-GPSR protocol has a lower average end-to-end delay and a higher packet delivery rate, which effectively improves the link stability and security.
文摘Sensor networks are composed of large number of densely deployed sensor nodes.Nodes of sensor networks are usually powered by batteries.Sensor nodes need to work in a physically insecure environment.The nodes are susceptible to various types of active attacks namely selective forwarding and sinkhole attacks in such environment.These attacks infuse malevolent packets by compromising the node.Geographical routing protocols of wireless sensor networks have been developed without considering the security and energy aspects against these attacks.In this paper,a secured routing protocol named trust based energy aware greedy perimeter stateless routing protocol(TEGPSR)is proposed for mobile sensor networks by incorporating trust based mechanism in energy aware greedy perimeter stateless routing protocol(EGPSR).Simulation results prove that TEGPSR outperforms the EGPSR by reducing overhead and improving the delivery ratio of the networks.
