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In the past few years, the concept of pervasive connectivity has become of crucial importance. New protocols have therefore been standardized to enable IPv6 mobility, such as the Network Mobility Basic Support (NEMO BS) protocol. This protocol is particularly suited for providing a global IPv6 connectivity in intelligent transportation systems. Yet, despite its popularity and maturity, it still suffers from various limitations which prevent its adoption in large-scale commercial deployments. Among these are operator specific issues such as the lack of practical and efficient bootstrapping procedure. Also, a global connectivity enables the provision of value-added services whose attractiveness mainly depends on their ease of configuration. In this paper, we focus on solutions to address both the bootstrapping of NEMO BS and service discovery in a mobile environment. By investigating various bootstrapping proposals, we advocate the use of a standardized solution extended with the missing pieces to operate in a NEMO BS environment. We also expose how operator services could be exported and announced in the mobile subnet. Authentication and authorization to access these services are also investigated. Experiments on a prototype show that our proposal brings the missing blocks towards the deployment of network mobility service in intelligent transportation systems. Copyright © 2009 John Wiley & Sons, Ltd.

The Transmission Control Protocol (TCP) is one of the core components of the TCP/IP protocol suite. It has been extensively used for the past three decades (and counting) as the privileged connection-oriented transport mode for many Internet applications, including access to web contents. Nevertheless, experience with TCP can sometimes be rather poor for various reasons which include (but are not limited to) sub-optimized forwarding path capabilities. Because a TCP session can only be established over a single path (by definition), this restriction is not only unable to take into account the dramatic evolution of terminal technologies towards multi-interfaced devices, but also the ability to benefit from several yet potential forwarding paths for the sake of improved Quality of Experience (QoE).

Internet actors should work on an action plan to mitigate the increase of Routing Information Base (RIB) and Forwarding Information Base (FIB) table sizes and the load induced by routing updates churn (BGP Instability Report, n.d.).

Network selection in an environment of heterogeneous wireless networks (HWNs) has been widely studied, but mobility-related factors were not well considered by selection schemes in the literature. Since vertical handover (VHO) corresponds to permutation of networks, the selection of a network actually becomes the selection of a permutation when VHO properties are considered. In this paper, we propose a best permutation scheme (Basic Besper) for mobility-based network selection in a generic HWN environment and two methods (i.e. Simplified Besper and Enhanced Besper) to further improve the time complexity of Basic Besper. According to our performance evaluations, Bespers could always select the best network and permutation based on mobility-related factors and many advantages compared with classic best network schemes are demonstrated. Furthermore, the two methods (especially Enhanced Besper) could find the best network quite rapidly, which is important for the continuity of real-time applications during VHOs.

Recently, network selection for heterogeneous wire- less networks has been widely studied by categorizing and employing various factors to decide the best network. Mobility- related factors can be used to represent mobility features of mobile terminals (MTs) and mobility support capabilities of wireless networks, but they are complicated in usage and are not well used in related works. In this paper, we study the usage of these factors and provide a scheme to use them in the same way as other factors in a network selection framework. By analysis and simulations, we demonstrate that mobility-related factors should be considered in network selection schemes, and our scheme achieves the goal of selecting the most appropriate network for MTs with various mobility features. Index Terms—network selection; heterogeneous wireless net- works; always best connected; vertical handover

This paper proposes some comparison of proposed techniques to enable seamless mobility. Seamless Mobility between various mobile access systems and also fixed access will become an important feature for operators, to propose new convergent services and architectures. Many standardization bodies propose some protocols and architectures to set up such seamless mobility but it is quite difficult to have a clear view about on-going studies. The goal of this paper is to bring knowledge about this important feature for mobile operators and integrated operators.