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Network-controlled mobility within radio access networks based onWLAN technologies
Authors:Karine Guillouard  Philippe Bertin  Youssef Khouaja  Jean-Christophe Rault  Jean-Marie Bonnin
Affiliation:1. France Telecom R&D, 4, rue du Clos Courtel, BP 59, 35512, Cesson Sévigné, France
2. GET/ENST Bretagne, rue de la Chataigneraie, BP 78, 35512, Cesson Sévigné, France
Abstract:This article presents a network-controlled approach of user terminal mobility within anIP based WirelessLAN Access Network. In a first part, this article makes a review of the mobility support, on the subject of emergingWLAN technologies asHIPERLAN/2 andIEEE 802.11, on the one hand, and, regardingIP networks as currently studied withinIETF, on the other hand. Both types ofIP mobility protocols are presented, either global mobility protocols such as MobileIP, or local mobility management protocols (micro mobility). In the next part, the overall principles of our mobility management approach are explained; this approach is based on the implementation of a new network entity dedicated to the control of user terminal mobility. The last part details a practical implementation of this approach. The implementation is carried out on the basis of Hierarchical MobileIPv6 (HMIPv6). The experimental results confirm the importance to carefully plan and control the user terminal mobility within largeIP based Access Networks, as this brings benefit to the user as well as to the operator.
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