Johan M. Karlsson

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The client-server model is fast becoming the most common form of network architecture used in data communications. It's popularity can be seen in the phenomenal expansion of the World Wide Web. It is essential that students understand the client-server model, and that they learn how to design client-server networks and to analyze their performance. This(More)
This paper presents a method for improving filter-based network-state estimation by adding detection and estimation of sudden changes in the system state. This can be of benefit in various contexts, e.g. in network management and adaptive streaming applications. In particular, it is shown that the performance of available-bandwidth estimation can be(More)
LTE and LTE-Advanced mobile technologies have integrated discontinuous reception (DRX) power saving method to optimize the power consumption at the user equipment (UE). The DRX method was proposed by the 3rd Generation partnership Project (3GPP), and since then, the traffic behavior has been analyzed in several studies with a standard 3-state DRX model to(More)