Adopting a Gateway Centric View for Cellular Network Content Delivery

John Paul Rula
2017 unpublished
Mobile traffic is expected to grow tenfold by 2019, topping 24 exabytes of monthly traffic and accounting for nearly half of all Internet traffic. This growth is driven by the increasing number of smart phones and tablets, and the data demands of high bandwidth services enabled by next-generation cellular networks such as LTE/5G. As in the wired Internet, network usage is dominated by content consumption, with the vast majority served through content delivery networks (CDNs). CDNs host and
more » ... cate popular content across thousands of servers worldwide, directing users to "nearby" servers. This replica selection is a key determinant of client performance, yet replica selection for cellular clients has previously been overlooked, due to high radio latency, inconsistent throughput, and a limited number of ingress locations which dominated end-to-end latency. NGCNs and their improved performance place a renewed emphasis on replica selection policies for cellular clients. We find that the performance of existing replica selection systems in cellular networks is hindered by their opacity, the dynamic assignment of clients to infrastructure components, the emergence of centralized DNS within cellular networks, and the growth of public DNS in global mobile operators. This opacity prohibits network probes from entering these networks, rendering existing monitoring and measurement systems ineffective.
doi:10.21985/n26q44 fatcat:sfa2gz3lvvgcfgamg6inrsgiaa