One-touch caching for content delivery in wireless consumer networks

As consumer traffic rapidly increases, content caching becomes common in intermediate nodes for rapid content transportation reducing content-trip delay. Compared with wired content caching systems, wireless caching systems require a lighter-weight caching mechanism because of limited processing capability. In this paper, we address that one-touch caching just keeping the most-recently requested content and replacing a random content among existing contents for storage of the new content significantly enhances caching performance with little computational overhead. Through simulation results, it is demonstrated that our scheme shows hit-ratio comparable to LFU (least-frequently-used) and LRU (least-recently-used) caching strategies.