期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2011
卷号：2
期号：4
页码：1644-1646
出版社：TechScience Publications
摘要：Internet vehicular Ad hoc network (IVANET) is a combination of wired Internet and Vehicular Ad hoc Network (VANET) through roadside infrastructure for universal communication among vehicles. A key optimization technique in IVANET is to cache frequently accessed data items in local storage of vehicles. A critical design issue is how to keep cache copies valid or invalidate them when original data item changed. This is important in IVANET where vehicles move very fast. Only 40% data updating is needed in city while 60% data updating is needed on highway. In this paper we have improved the data cache invalidation scheme on highway. This scheme shows better performance in handover and reduces the cache invalidation data drop in vehicles.
