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M. Laner, P. Svoboda, P. Romirer-Maierhofer, N. Nikaein, F. Ricciato, M. Rupp:
"A Comparison Between One-way Delays in Operating HSPA and LTE Networks";
Talk: The 8th International Workshop on Wireless Network Measurements WinMee'12, Paderborn, Germany; 05-18-2012; in: "Proceedings of the 8th International Workshop on Wireless Network Measurements WinMee'12", (2012), 7 pages.

The detailed understanding of packet delays in
modern wireless networks is crucial to optimize applications and
protocols. We conducted high precision latency measurements
in operational LTE and HSPA networks, deploying a hybrid
approach of active probing and withe-box testing. It allowed
us to separately assess the one-way delay contributions of the
radio access network and the core network for both technologies.
The results show that LTE outperforms HSPA in the case of
medium to high data rates. However, due to differences in the
radio access procedures, the HSPA uplink connection offers lower
delay for specific traffic patterns. A comparison between our
measurement results and the requirements for delay sensitive
applications exhibits that LTE is not (yet) the generally preferable
technology. Hence, further optimizations of the LTE scheduling
and resource allocation policies are required to fully exhaust all
feasible latency improvements.

latency delay measurement hspa lte cellular network traffic type comparison