Performance analysis of dynamic adaptive video streaming over mobile content delivery networks

Mobile Content Delivery Networks (MCDNs) are designed to effectively support the delivery of continuous and discrete media to mobile consumers over cellular networks. Enabling large scale content distribution at a reasonable cost and without overloading the mobile core network is a crucial design goal for network operators. Nowadays, a key task for network operators is the development of efficient MCDNs due to the day-by-day video traffic increase in the network. In this paper, a novel concept of MCDN is proposed with the target of flexibly adapting the video caching and transport in the cellular network to the mobility of the users. By means of simulation we show that there exists a video chunk length which provides the best tradeoff between the traffic volume generated in the network and the size of the cache in the CDN nodes. New challenges are discussed and practical considerations for wide-scale deployments in next generation cellular networks are discussed.