Collaborative D2D Cache System Based on SDN Network

The proliferation of data devices and wireless apps in the modern mobile environment has aided in the emergence of new content delivery techniques. Recent studies have shown that wireless caching is a successful method for resolving the conflict between the massive data traffic and the limited transmission rate. This study looks at a software-defined network caching strategy that uses two separate caches on mobile devices to store files with different popularity using different caching methods. It is possible to download the requested files locally, through device-to-device collaboration, or from cellular network. The cooperative caching strategy also aims to increase the cache hit probability. According to simulation results, the cache hit probability has been optimized through the caching strategy.