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Publications (13)3.66 Total impact

  • Michael Boc, Alexandru Petrescu, Christophe Janneteau
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    ABSTRACT: Proxy Mobile IPv6 (PMIPv6) relies on centralized data and signaling anchoring. Communications of mobile users are tunneled to and from a local mobility anchor (LMA) for routing decision. In a hierarchical architecture this centralization generates bottlenecks and scalability issues. In distributed architectures, PMIPv6 could be extended and optimized to take advantage of the distribution of network functions. This paper proposes a PMIPv6 extension to perform routing optimization in flat and distributed architectures. The key idea is that data traffic performances can be improved by re-considering anchors location. In a distributed architecture, the LMA would attribute the most adapted anchor to handle a flow with regards to the network usage. The anchor could be relocated to follow mobility of the user for instance. Basically, the extension allows the LMA to control the data path of a flow from the source to the destination by determining one or several intermediate anchor(s) to traverse. One intermediate anchor could be chosen to achieve near-zero triangular data path, to apply a specific type of service on the flow (e.g., buffering, charging, filtering, etc.), to offload the flow to a specific network, or to perform smart traffic steering.
    14th International Symposium on Wireless Personal Multimedia Communications, WPMC 2011, Brest, France, October 3-7, 2011; 01/2011
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    ABSTRACT: This paper addresses the challenge of enabling efficient multimedia group communications in today's highly heterogeneous networking environment. In particular, such an environment calls for a multiparty delivery solution capable of finding an optimal balance between two apparently contradictory needs: on one hand personalizing the service delivery for each user based on his particular context to offer the desired quality of experience, and on the other hand optimizing network resources by maximizing the use of traffic aggregation techniques like IP multicast when possible. The proposed context-aware multimedia multiparty delivery architecture reaches this objective by optimizing the service delivery for each user through dynamic adaptations at the session, transport, and network layers. These adaptations encompass means for dynamic selection of the best user device (if multiple are available), media coding, access network, routing path, transport connection type, transport reliability scheme, and QoS support. Both the networking context of the user and his environmental context (typically acquired from sensors) are taken into account in that process. In particular, the architecture (a) enables dynamic clustering of users with similar contexts into subgroups receiving the same content but in different formats (e.g. different media codings); and (b) for each subgroup it builds a QoS-enabled multiparty transport overlay tree maximizing the use of IP multicast when available for efficient use of network resources. This architecture has been validated and evaluated both through simulation and prototyping; and the results obtained are presented hereunder.
    Future Network and Mobile Summit, 2010; 07/2010
  • 04/2010: pages 171 - 201; , ISBN: 9780470661314
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    ABSTRACT: Future networks are envisioned to satisfy the user needs and improve their quality of experience. This requires the networks to support context-aware information, where context of the user, session, network and environment will greatly influence the way the session is delivered: new approaches are required to deal with the overall context information and network reaction to constantly context changes. This paper presents a context-aware architecture that provides delivery of multiparty services in heterogeneous and mobile environments. The architecture, its elements and functionalities are described through a specific application to a context-driven use case scenario. We show that this architecture is able to provide personalized and multiparty services to the users, addressing their characteristics and preferences, and optimizing network support while mobility and heterogeneous environments are in place.
    Proceedings of the International Conference on Ultra Modern Telecommunications, ICUMT 2009, 12-14 October 2009, St. Petersburg, Russia; 01/2009
  • Proceedings of the 5th International Conference on Mobile Multimedia Communications, MobiMedia 2009, London, UK, September 7-9, 2009; 01/2009
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    ABSTRACT: Mobile routers allow complete networks to be mobile. This article examines which modifications to the routing mechanism of standard IPv6 router have to be accomplished to provide network mobility as a mobile router (MR). A router's packet routing mechanism is controlled by entries in routing tables. Thus in case of network mobility, the natural approach consists in extending the capabilities of routing table management. We describe limitations of standard routing table management and propose extensions for mobile net- works. Our solution requires only minor changes to a normal router and provides good performance.
    01/2009;
  • IEEE Vehicular Technology Society (VTS) News. 11/2005; 52(4).
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    Hong-Yon Lach, C. Janneteau, A. Petrescu
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    ABSTRACT: This article aims to analyze network mobility issues and requirements in the context of beyond-3G systems, and explore various approaches to the solutions, including the basic approach being pursued within the IETF NEMO working group. It starts with understanding the network mobility scenarios. Then the principle of mobile IP is revisited to serve as the basis for the subsequent discussion on the basic and advanced requirements and approaches for network mobility support. Finally, the network mobility research activities in the EU project OverDRiVE are reported.
    IEEE Communications Magazine 08/2003; · 3.66 Impact Factor
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    Christophe Janneteau, Hong-Yon Lach
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    ABSTRACT: One of the most challenging topics in the area of mobile communications is the enhancement of IP networking technologies to integrate wired and wireless systems as a seamless Beyond-3G system for mobile users. WINE GLASS, a European 5th Framework Program project, is addressing this subject by investigating and implementing enhanced IPv6-based techniques to support mobility and QoS in a wireless Internet architecture. In the WINE GLASS architecture, the reference scenario consists of two administrative domains potentially representing two different operators connected by the public Internet. Each one of the administrative domains includes its own IPv6-based infrastructure which incorporates different access networks, specifically 3G UTRAN (without the 3G Core Network) for the public context and 802.11b WLAN for the business context. The WINE GLASS architecture attempts to replace the UMTS Core Network functionality with pure IP networking solutions. Specifically, the rather complicated and expensive GPRS-based Core Network entities, such as the SGSN and GSGN, are replaced by cheaper and more conventional equipment running Internet protocols. But this benefit comes at the expense of losing the termination points for Non Access Stratum (NAS) signalling. A UTRAN-IP Gateway is introduced in the WINE GLASS architecture to solve this problem. With respect to Mobility management, WINE GLASS focuses on the macro-mobility issues to manage the handover with Mobile-IPv6 between different RNCs (SRNS Relocation) and between access networks of same or different types (i.e. vertical handover). This paper discusses the rationale for the deployment of IPv6, as well as the various possible scenarios for IPv6 deployment in future mobile data systems in comparison with the WINE GLASS architecture. Mobile-IPv6-based mobility management, including vertical handover and interworking with SRNS relocation, as well as the UTRAN-IP Gateway and the enhanced NAS procedures to support IPv6 connectivity over UTRAN are detailed. Finally, the WINE GLASS testbed is described, taking into account the implementation and deployment issues. The paper concludes on the pending open issues that will be addressed in the project before its completion in December 2001.
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    ABSTRACT: This paper describes three mobile multicast proposals from the perspective of the OverDRiVE IST project. OverDRiVE aims at enabling the delivery of spectrum efficient multi- and unicast services to vehicles. The examined approaches are the state-of-the-art of IPv6 mobile multicast, namely bi-directional tunnelling, remote subscription and multicast agent. The paper also features a comparison of these approaches, based on the requirements defined by the project.
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    ABSTRACT: 1 This work has been performed in the framework of the IST project IST-2001-35125 OverDRiVE (Spectrum Efficient Uni-and Multicast Over Dynamic Radio Networks in Vehicular Environments), which is partly funded by the European Union. The OverDRiVE consortium consists of Ericsson (co-ordinator), DaimlerChrysler, France Telecom, Motorola and Radiotelevisione Italiana as well as Rheinisch-Westfälische Technische Hochschule RWTH Aachen, Universität Bonn and the University of Surrey. The authors acknowledge the contributions of their colleagues in the OverDRiVE consortium. ABSTRACT Mobile IPv6 has no native support for mobility of entire networks, such as vehicular networks or personal area networks. This paper suggests protocol extensions for IPv6 moving networks. These extensions rely on a bi-directional tunnel between the moving network's Mobile Router and its Home Agent, providing uninterrupted connectivity for moving networks while changing access networks. Several supported configurations of moving networks are presented. The paper describes a proof-of-concept implementation using the Motorola LIVSIX IPv6 stack. Drawbacks such as crossover tunnels and excessive nested tunnelling are discussed.
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    ABSTRACT: Efficient network support of real-time group communications requires dedicated multiparty networking technologies, such as IP multicast, to send the same content simultaneously to multiple receivers, with intermediate routers duplicating packets as needed. The increasing popularity of group applications introduces new technical challenges to meet the users' new expectations of accessing them anywhere, anytime, and anyhow. The heterogeneity in group members, e.g. in terms of access to network resources, devices used, physical mobility and environment, makes it almost impossible to deliver content to all group members in the same manner. Dynamic adaptation of the multiparty delivery is thus needed to optimize group communications and maximise satisfaction of group members. Hence, although the same content is to be sent to all group members, its delivery needs to be optimized for each user based on its context. Addressing this research challenge, we propose a functional architecture for context-aware multiparty delivery. The solution presented is unique in that it allows optimization of the delivery in all layers of the 2 multiparty networking stack (i.e. session, transport, and network layers) based not only on the user networking context but also on its environmental context.
  • H. Y. Lach, C. Janneteau, A. Petrescu