Abstract
Internet-based vehicular ad hoc (IVANET) network is a exponentially growing technique that is a combination of wired and wireless components while a Vehicular Ad hoc Network (VANET) is for ubiquitous communication. Cache the frequently accessed data items in a local cache of vehicles is an optimization approach as vehicles are not limited with resources. So important research issue is to invalidate the cache on update of data on server. For Moving vehicles access to valid data should be fast. In this paper, we have propose a Cooperative Gateway Cache Invalidation scheme and it is a modification of Cooperative Cache Invalidation (CCI) technique. It takes the advantage of cooperation of Gateways in different regions along with the underlying location management scheme to reduce the number of broadcast operations and the corresponding query delay. We developed an analytical model for technique for cost of query communication. We evaluated the performance of our cache invalidation schemes through simulations using customized NS2.35 by varying query arrival rate. Our simulation results indicate that the proposed schemes can reduce the query delay. (C) 2015 The Authors. Published by Elsevier B.V.