Adaptive Data Broadcasting Using Air-Cache.

摘要

In the Data AirWaves Project at University of Maryland, we are integrating Direct Broadcast Satellite (DBS) systems with terrestrial networks to provide a hybrid and effective communication substrate lying between data resources and remote/mobile user applications. Smooth integration of these two media balances the need for rapid data dissemination to very large numbers of clients and on demand interactive data services. This paper describes the air- cache, a method for effective data broadcasting and an algorithm which rapidly adapts the content of the cache based on the 'misses' which result in explicit (on-demand) data requests. Simulation results show that the hypothesis of adapting based only on the misses performs quite reasonably and has very little deviation from a system that has complete information - both hits and misses.