A data dissemination mechanism based on evaluating behavior for vehicular delay-tolerant networks

Abstract

Vehicular delay-tolerant networks are widely used in intelligent transport application. Vehicle nodes exchange and share various information in vehicular delay-tolerant networks. However, current delay-tolerant network routing algorithms do not take into account the dynamic characteristic of traffic flow, and they do not effectively resist cyber attacks, such as black hole attack. To address this issue, we propose a data dissemination mechanism for vehicular delay-tolerant networks. In this mechanism, we develop a combined model to estimate the real-time traffic density. Simultaneously, we propose the metrics which include node interaction dispersion, node interaction freshness, node interaction participation, and node interaction contribution to evaluate behavior of nodes. Based on these metrics, a routing method is constructed. In this routing method, a relay node is selected by evaluating communication interaction behaviors among vehicle nodes. Considering the factors of traffic flow density and communication behaviors of vehicle nodes, a message forwarding strategy scheme is built for different traffic density scenarios. Extensive simulations show that the proposed mechanism exhibits superior performance over existing methods in forwarding traffic information and alleviates negative effects from black hole attacks.

Bio-inspired Probabilistic Opportunistic Routing for Vehicular Delay-Tolerant Networks Using A Hybrid Swarm Approach

“…A data dissemination mechanism based on evaluating behavior for VDTNs [22] defines a routing protocol that estimates traffic density for SCF node selection decisions. This mechanism also takes into account the behavior of vehicles under a predefined interaction score, calculated using four parameters; namely, node interaction freshness, node interaction dispersion, node interaction contribution, and node interaction participation.…”

Selfishness in Vehicular Delay-Tolerant Networks: A Review

“…Although the two networks, VANET and VDTN [25,26], are independent and self-governed due to in-built node cooperation, some nodes may not contribute to the network performance by sharing resources. It is likely that some nodes in the network while using the resources of the network may not relay messages for other nodes; these nodes are termed selfish nodes.…”