The impact of HSPA core network features on latency for M2M and OG-like traffic patterns

In this paper we present an analysis of influence of core network features on RTT for modelled M2M and Online Gaming traffic in a live 3G/HSPA network. Test traffic simulating multiplayer real-time games and M2M applications, was generated by an application on 10 mobile phones in parallel, sending data to a remote server. APNs with different combinations of hardware/features (proxy server, different GGSNs and firewalls, usage of Service Awareness feature) were chosen, and the traffic was recorded on the Gn interface in the mobile core. The goal of these experiments was to evaluate any eventually significant variation of average recorded RTTs in the core, that would clearly indicate either the impact of used APN on delay for a specific traffic pattern, or selectivity of the APN towards different traffic patterns.