An analytical study of cooperative data dissemination in push-based mobile environments

Caching is an important technique for improving the data retrieval performance of mobile clients who store frequently needed data items in their local cache, often of a limited size. With the concept of cooperative data dissemination (CDD), the mobile clients not only retrieve data items from mobile support stations, but also from the cache in their peers. This paper describes a CDD framework in a push-based mobile environment and proposes a generic analytical model for evaluating the performance of the CDD framework in terms of the access latency and the tune-in time. Analytical results show that CDD effectively reduces the data access latency and tune-in time in the push-based mobile environment. The results of this work provide requisite knowledge and insights for designing new CDD frameworks in the push-based mobile environment.