Localized Mobility Management for SDN-Integrated LTE Backhaul Networks

Wang, D., Zhang, L. , Qi, Y. and Quddus, A. U. (2015) Localized Mobility Management for SDN-Integrated LTE Backhaul Networks. In: 2015 IEEE 81st Vehicular Technology Conference (VTC Spring), Glasgow, Scotland, 11-14 May 2015, ISBN 9781479980888 (doi: 10.1109/VTCSpring.2015.7145916)

Abstract

Small cell (SCell) and Software Define Network (SDN) are two key enablers to meet the evolutional requirements of future telecommunication networks, but still on the initial study stage with lots of challenges faced. In this paper, the problem of mobility management in SDN-integrated LTE (Long Term Evolution) mobile backhaul network is investigated. An 802.1ad double tagging scheme is designed for traffic forwarding between Serving Gateway (S-GW) and SCell with QoS (Quality of Service) differentiation support. In addition, a dynamic localized forwarding scheme is proposed for packet delivery of the ongoing traffic session to facilitate the mobility of UE within a dense SCell network. With this proposal, the data packets of an ongoing session can be forwarded from the source SCell to the target SCell instead of switching the whole forwarding path, which can drastically save the path-switch signalling cost in this SDN network. Numerical results show that compared with traditional path switch policy, more than 50 signalling cost can be reduced, even considering the impact on the forwarding path deletion when session ceases. The performance of data delivery is also analysed, which demonstrates the introduced extra delivery cost is acceptable and even negligible in case of short forwarding chain or large backhaul latency.

• Item Type: Conference Proceedings
• Additional Information: The research leading to these results has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement No.317941.
• Keywords: Long term evolution, mobility management (mobile radio), quality of service, software defined networking, synchronisation, telecommunication network topology, telecommunication traffic, wireless LAN, IEEE 802.1ad double tagging scheme, LTE mobile backhaul network, QoS, S-GW, SCell network, SDN, backhaul latency, data delivery, delivery cost, dynamic localized forwarding scheme, forwarding chain, forwarding path deletion, localized mobility management, packet delivery, path switch policy, path-switch signalling cost, quality of service, serving gateway, small cell, software defined network, telecommunication networks, traffic forwarding, traffic session, handover, mobile computing, mobile radio mobility management, switches.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Zhang, Professor Lei
• Authors: Wang, D., Zhang, L., Qi, Y., and Quddus, A. U.
• College/School: College of Science and Engineering > School of Engineering
• ISSN: 1550-2252
• ISBN: 9781479980888
• Copyright Holders: Copyright © 2015 IEEE
• First Published: First published in 2015 IEEE 81st Vehicular Technology Conference (VTC Spring)
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher