Cacheability Analysis of HTTP Traffic in Operational LTE Network

With the rapid increase of traffic on the web, content caching reduces user-perceived latency as well as the transmission of redundant traffic on the network. In this study, we analyze the gains of HTTP content caching at the location of SGW in an LTE Wireless network. We compare the cacheability gains for different content types such as image, video, text etc, and also for popular websites. Our analysis show that amongst all the contents, `image' type have the highest cacheability value, which means caching them is beneficial. Amongst the popular websites compared, cacheable contents from `Facebook' have the highest probability of revisits. We also explain this behavior using a related study. We extend the analysis by varying the interval of caching and studying its effect on the cacheability.