Hierarchical Proactive Caching for Vehicular Ad Hoc Networks

摘要: Recently, emerging vehicular applications are increasing the demand of vehicles which form significant burdens on network backhaul and represents a cause to quality experience (QoE) decay users. Proactive caching is promising technique mitigate load core networks by some expected data items. This work proposes hierarchical proactive scheme jointly considers in roadside units (RSUs). Minimization vehicle communication latency main objective our study. The optimization problem formulated find optimal decision at RSUs vehicles. Numerical results show that has great performance gain compared baseline reactive scenario. Moreover, reveal vehicles, with small memory cache size, effective impact total latency.