Buffer Management for Efficient Data Dissemination in Vehicular Network

As there is a tremendous increase in the demand for the data dissemination in wireless networks, it is necessary to investigate an effective mechanism in order to improve the cooperative data dissemination in telematic applications. In this paper we have considered cooperative data dissemination with respect to Roadside WLANs as an infrastructure. With respect to cooperative data dissemination the contents or the data are stored at the access point (AP) and as and when required, the contents are downloaded from the content server in the internet and are disseminated to the mobile users. When multiple users request for the data, providing a satisfactory services to users cannot be achieved with the existing approach. To provide satisfactory dissemination services to the nomadic users with reduced delay, it is necessary to optimally utilize the available buffer space. Effective buffer management will thereby reduce the frequent download from the content server and thereby improve the performance with respect to content download time, latency and chunk cache hit ratio. In this paper we propose a mechanism to optimally use the available buffer space based on the user mobility and content popularity. Buffer management is carried out in this proposed work by determining the frequent set of data using least popularly used algorithm.