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Mobility Management for VoIP on Heterogeneous Networks: Evaluation of Adaptive Schemes
September 2007 (vol. 6 no. 9)
pp. 1035-1047
The introduction of the IP multimedia subsystem on 3G cellular networks and the integration with other widely deployed wireless networks based on the IEEE 802.11 protocol family require support for both mobility and quality of service. When mobile systems move across heterogeneous networks, ongoing real-time sessions are affected not only by handoff delay but also by different packet delay and bit-rate. In this paper we propose a cross-layer mechanism that takes into account mobility at different layers of the network stack in order to yield better quality for VoIP, videoconferencing and other real-time applications.We describe our cross-layer architecture, adaptation techniques, a prototype implementation and experimental results.

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Index Terms:
Mobility, Adaptivity, Voice over IP
Citation:
Massimo Bernaschi, Filippo Cacace, Giulio Iannello, Massimo Vellucci, "Mobility Management for VoIP on Heterogeneous Networks: Evaluation of Adaptive Schemes," IEEE Transactions on Mobile Computing, vol. 6, no. 9, pp. 1035-1047, Sept. 2007, doi:10.1109/TMC.2007.1003
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