Reliable Data Dissemination Strategy based on Systematic Network Coding in V2I Networks

In this paper, we propose a real-time data dissemination system based on systematic network coding (SNC) in Vehicular to infrastructure (V2I) network. We consider the delivery of data broadcasted over packet erasure V2I channels where the speed of vehicles changes over time. Unlike conventional existing SNC, we propose an encoding algorithm that adaptively determines how many packets need to be network coded together while explicitly considering traffic state. Specifically, we adopt regression models for estimating traffic states and show that the proposed approach outperforms in terms of decoding error rate in time-varying traffic. Our experiment results using actual highway traffic data show that the decoding error rate of the proposed approach can be reduced by 11.11% and thus confirm the effectiveness and reliability.