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Simulation of Vertical Handover Algorithms with NCTUns

Alexander GarcĂ­a, Lina Escobar, Andres Navarro, Adriana Arteaga, Fabio Guerrero and Carlos Salazar

The 2010 Summer Computer Simulation Conference (SCSC 10)
Ottawa, Canada, July 11-14, 2010


This paper presents the simulation of Vertical Handover Algorithms (VHA) using NCTUns and tested on scenarios with WiFi/GPRS or WiFi/WiMAX Mobile networks: The first evaluates parameters such as the network bandwidth, economic cost of the connection and the mobile node mobility and uses a cost function to evaluate candidate networks. The second is based on application requirements such as bandwidth, latency and % packet loss rate. The third organizes the nodes connections to balance the load on connection points, optimize battery consumption, or both. We developed several scripts in C and PERL language for inclusion in the tool like other components, and use a NCTUns API to communicate with the simulation engine. In simulation scenario we use the multi-interface node for Intelligent Transportation System (ITS) networks or a node for each technology, but they behave as a single node with multiple interfaces. Simulations results are used to analyze the VHAs performance measuring handover delay, number of avoided handovers and computational cost of the algorithms.

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