Exploring Mobile/WiFi Handover with Multipath TCP

Thu, 06/07/2012 - 11:22 by Gregory Detal


Mobile Operators see an unending growth of data traffic generated by their
customers on their mobile data networks. As the operators start to have a hard
time carrying all this traffic over 3G or 4G networks, offloading to WiFi is
being considered. Multipath TCP (MPTCP) is an evolution of TCP that allows the
simultaneous use of multiple interfaces for a single connection while still
presenting a standard TCP socket API to the application. The protocol
specification of Multipath TCP has foreseen the different building blocks to
allow transparent handover from WiFi to 3G back and forth.

In this paper we experimentally prove the feasibility of using MPTCP for
mobile/WiFi handover in the current Internet. Our experiments run over real
WiFi/3G networks and use our Linux kernel implementation of MPTCP that we
enhanced to better support handover.

We analyze MPTCP's energy consumption and handover performance in various
operational modes. We find that MPTCP enables smooth handovers offering
reasonable performance even for very demanding applications such as VoIP.

Finally, our experiments showed that lost MPTCP control signals can adversely
affect handover performance; we implement and test a simple but effective
solution to this issue.

Christoph Paasch, Gregory Detal, Fabien Duchene, Costin Raiciu and Olivier Bonaventure
ACM SIGCOMM workshop on Cellular Networks (Cellnet'12), 2012.
Full text
pdf   (410.13 KB)
Cite it
See here

IEEE Copyright Notice: This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.

ACM Copyright Notice: Copyright 1999 by the Association for Computing Machinery, Inc. Permission to make digital or hard copies of part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page or intial screen of the document. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, to republish, to post on servers, or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from Publications Dept., ACM Inc., fax +1 (212) 869-0481, or permissions@acm.org.

Springer-Verlag LNCS Copyright Notice: The copyright of these contributions has been transferred to Springer-Verlag Berlin Heidelberg New York. The copyright transfer covers the exclusive right to reproduce and distribute the contribution, including reprints, translations, photographic reproductions, microform, electronic form (offline, online), or any other reproductions of similar nature. Online available from Springer-Verlag LNCS series.