Proactive Caching for Vehicular Ad hoc Networks Using The City Model

摘要: Caching at Roadside Units (RSUs) is a promising technique to alleviate the load on network backhaul in Vehicular AdHoc Networks (VANETs). It also allows us minimize communications latency between RSUs and connected vehicles, which are interested massive multimedia contents. This work proposes novel proactive caching schemes for city mobility environment. We adopt Manhattan model, where streets arranged an organized manner movable nodes allowed traverse along grid of horizontal vertical streets. Exploiting information about vehicles demand patterns increases capability enables proactively cache desired files before its actual demand. The main objective this study how communication receive their data items. non-clustered scheme optimization problem formulated find optimal decision each RSU. extend our by considering clustered cluster cooperate together serve with minimum latency. Due complexity these problems, we propose sub-optimal policy scheme. compare performance that policy. Numerical results reveal has great gain when compared reactive baseline Furthermore, manifest significant over