This paper takes an exploratory look on control plane signaling in a mobile cellular core network. In contrast to most contributions\nin this field, our focus does not lie on the wireless or user-oriented parts of the network, but on signaling in the core network. In\nan investigation of core network data we take a look at statistics related to GTP tunnels and their signaling. Based on the results\nthereof we propose a definition of load at the GGSN and create an initial load queuing model.We find signs of user devices putting\nburden on the core network through their behavior.
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