Title: Load sharing and session preservation with multiple mobile routers for large scale mobile networks

Authors: Eun Kyoung Paik, Hosik Cho, Thierry Ernst, Yanghee Choi

Addresses: School of Electrical Engineering and Computer Science, Seoul National University, Seoul 151 744, Korea; now working at Future Technology Lab, KT, Korea. ' School of Electrical Engineering and Computer Science, Seoul National University, Seoul 151 744, Korea. ' Keio University, Jun Murai Lab, 5322 Endo, Fujisawa-shi, Kawagawa 252-8520 Japan; now working at INRIA – France. ' School of Electrical Engineering and Computer Science, Seoul National University, Seoul 151 744, Korea

Abstract: By means of NEtwork MObility (NEMO) support, users can organise their various communication devices into a subnet called mobile network. The Mobile Router (MR) provides the connectivity to the internet and mobility management transparency for the rest of the mobile nodes in the mobile network. So, the MR must assure reliable communications and a high data rate for the group of nodes behind it. In support of broadband wireless communications, the use of multiple MRs would allow the transfer of large volumes of data to a group of mobile nodes. This paper addresses the protocol issues arising from the use of multiple MRs, and analyses the influence of mobility patterns on load sharing and session preservation. Then, two mobility-aware selection schemes are proposed, which select a MR. Firstly, the best-connected MR selection scheme is designed for regular mobility and is based on the fact that the most recently updated binding remains effective for the longest period of time. It preserves the connection from the mobile network to the internet whether the accessible area is continuous or not, and this even in a fast handoff environment. Secondly, the most-beneficial MR selection scheme is designed for random mobility. The simulation results show that the performance varies depending on the hardware configuration. Based on these results, it was found that application-awareness is critical to achieve good performance.

Keywords: IPv6; load sharing; mobile IPv6; mobile routers; multihoming; multi-homing; network mobility; NEMO; session preservation; vehicular area networks; VAN; mobile networks; load sharing; session preservation; internet; mobility management; wireless networks; mobility patterns; simulation.

DOI: 10.1504/IJWMC.2008.019718

International Journal of Wireless and Mobile Computing, 2008 Vol.3 No.1/2, pp.56 - 68

Published online: 25 Jul 2008 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article