Utilisation de CORBA pour la Communication Inter-véhicules

National audienc

Autonomic-oriented Architecture for an Intelligent Handover Management Scheme

International audienceIn the new area of heterogeneous wireless environments, roaming users with multi-interface mobile terminals should benefit from the best connectivity to services anytime and anywhere. To reach this goal, a handover management solution is needed. In this paper, we propose a mobile centered scheme in order to bring intelligence and autonomicity aspects. Our scheme is based on an autonomic-oriented architecture which is able to adapt dynamically to environment changes. It contains three main planes : the knowledge, the piloting and the control planes. The knowledge is defined as the context environment (access network availability, mobile's movement, QoS parameters, user preferences, etc.). The piloting system, driven by the knowledge, provides flexibility and efficiency thanks to advanced decision algorithms and policies governing the whole decision process. Thus, the appropriate control mechanism (i.e. the target access network) is selected while satisfying user and system requirements and ensuring service continuity for the demanding service

An Intelligent Handover Management System for Future Generation Wireless Networks

<p>Abstract</p> <p>Future generation wireless networks should provide to mobile users the best connectivity to services anywhere at anytime. The most challenging problem is the seamless intersystem/vertical mobility across heterogeneous wireless networks. In order to answer it, a vertical handover management system is needed. In our paper, we propose an intelligent solution answering user requirements and ensuring service continuity. We focus on a vertical handover decision strategy based on the context-awareness concept. The given strategy chooses the appropriate time and the most suitable access network among those available to perform a handover. It uses advanced decision algorithms (for more efficiency and intelligence) and it is governed by handover policies as decision rules (for more flexibility and optimization). To maintain a seamless service continuity, handover execution is based on mobile IP functionalities. We study our decision system in a case of a 3G/UMTS-WLAN scenario and we discuss all the handover decision issues in our solution.</p

An Overview of Vertical Handover Decision Strategies in Heterogeneous Wireless Networks

International audienceIn the next generation of wireless networks, mobile users can move between heterogeneous networks, using terminals with multiple access interfaces and non-real-time or real-time services. The most important issue in such environment is the Always Best Connected (ABC) concept allowing the best connectivity to applications anywhere at anytime. To answer ABC requirement, various vertical handover decision strategies have been proposed in the literature recently, using advanced tools and proven concepts. In this paper, we give an overview of the most interesting and recent strategies. We classify it into five categories for which we present their main characteristics. We also compare each one with the others in order to introduce our vertical handover decision approach

A Mobile-controlled Handover Management Scheme in a Loosely-coupled 3G-WLAN Interworking Architecture

International audienceIn the new area of heterogeneous environments, roaming users, using multi-interface mobile terminals, need to access to services anytime and anywhere. For that, a seamless vertical handover has to be considered. In our paper, we propose a 3G/UMTS-WLAN loosely-coupled interworking architecture with mobile IP as a service continuity solution. We focus on a mobile-controlled vertical handover management scheme. Our solution chooses the best access network according to user preferences and it maintains the ongoing session. It has several advantages to be simple and to generate minor changes at the network side. Moreover, MIP-based handover execution procedure is prepared thanks to a handover decision taken at the mobile side. The scheme proposes an interesting answer to intersystem and inter-domain mobility management issues. Finally, a simulation model is developed to validate the feasibility of the proposed 3G/UMTS-WLAN architecture

Schéma Intelligent de Décision du Handover Vertical dans les Réseaux Hétérogènes

International audienc

Architecture of an Intelligent Inter-system Handover Management Scheme

International audienceIn the next generation of wireless networks, mobile users should move across various access technologies, using multi-interface terminals and different types of services. The most important issue in such heterogeneous environment is the always best connected (ABC) concept. It allows the best connectivity to services anywhere at anytime. For that, a seamless inter-system handover solution is needed. In our paper, we propose an intelligent solution, based on the context-awareness concept, ensuring service continuity and answering user requirements. We focus on the vertical handover decision issue. It performs whether and over which access network to hand over among those available. It uses advanced decision algorithms (for more efficiency and intelligence) and it is governed by handover policies as decision rules (for more flexibility and optimization)

SHIM6-Based Mobility Management for Multi-homed Terminals in Heterogeneous Environment

International audienceMost of smart-phones are equipped with several network interfaces. This evolution highlights the benefits of multi-homing which offer user access to services not only anywhere, at any time and from any network but also simultaneously. Due to the lack of multi-homing support in existing protocols, several issues remain. The main issue is to manage several paths between two communicating nodes at a time in a mobile environment, and despite multiple paths, make sure end nodes correspond to the source and destination terminals. This paper proposes a SHIM6-based solution for mobility management of mobile terminals in multi-homing context

Considering Security and Quality of Service in SLS to improve Policy-based Mabagement of Multimedia services,” ICN-07

Abstract-This paper proposes to improve policy-based management by integrating security parameters into the Service Level Specification (SLS). Integrating those parameters in the QoS part of the Service Level Agreement (SLA) specification is of particular importance for multimedia services requiring security since QoS is negotiated when the multimedia service is deployed. Security mechanisms need to be negotiated at that time when sensible multimedia information is exchanged. In this paper we show that including security parameters in SLA specification improves the negotiation and deployment of security and QoS policies for multimedia services. The parameters this paper proposes to integrate have the advantage to be understandable by end-users and service providers