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Performance evaluation of multipath transport protocol in heterogeneous network environments

Sarwar, Golam and Boreli, Roksana and Lochin, Emmanuel and Mifdaoui, Ahlem Performance evaluation of multipath transport protocol in heterogeneous network environments. (2012) In: IEEE 12th International Symposium on Communications and Information Technologies (ISCIT), 02-05 Oct 2012, Gold Coast, Australia .

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Official URL: http://dx.doi.org/10.1109/ISCIT.2012.6381048

Abstract

Performance of multipath transport protocols is known to be sensitive to path asymmetry. The difference between each path in terms of bandwidth, delay and packet loss has a potential to significantly decrease the overall performance of a data flow carried over multiple asymmetric paths. In this paper, we evaluate and analyse reliable data transfer in Concurrent Multipath Transfer extension of Stream Control Transport Protocol (CMT-SCTP) under various conditions of network asymmetry, with a focus on the use case where 3G and Wi-Fi networks are simultaneously available. We identify various causes of performance degradation, review the impact of CMT-SACK extension under path asymmetry and show that the total achievable goodput of a reliable in-order data flow over multiple heterogeneous paths is ruled by the characteristics of the worst path as perceived by the transport protocol. To support our study, we derive a simple analytical model of the receiver window blocking and validate it via simulation.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Other partners > National ICT Australia - NICTA (AUSTRALIA)
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Deposited By:Emmanuel Lochin

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