Conference Paper

A combined mobility and QoS framework for delivering ubiquitous services

Centre for Telecommun. Res., King's Coll. London, London
DOI: 10.1109/PIMRC.2008.4699885 Conference: Personal, Indoor and Mobile Radio Communications, 2008. PIMRC 2008. IEEE 19th International Symposium on
Source: IEEE Xplore


From a network perspective, the major challenge in providing seamless connectivity whilst maintaining the required level of QoS to users results from the negative interactions that occur between mobility and QoS. These interactions, particularly those of mobility and QoS, have been the subject of much research. In this paper, we discuss the various approaches that have already been taken to combine QoS and mobility mechanisms, and present a new framework to combine such mechanisms with the aim of reducing the negative interactions that might arise between them. We propose the concept of enhanced nodes which is a special IP router with an extra sub-layer of mobility, QoS and security features. Our framework is illustrated with an example of a QoS-based mobility selection mechanism.

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Available from: A. Hamid Aghvami
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    ABSTRACT: The demand for resource-hungry applications whilst on the move is growing, and is being fuelled in particular by the increasing availability of high-quality multimedia services. To this end, micro-mobility protocols play an important role in providing seamless data delivery to terminals as they roam across different networks. However, such protocols typically lead to bottleneck congestion occurring within the access network. Within moving networks, in which a potentially vast number of terminals are present, the bottleneck congestion problem is significantly magnified, and can lead to increased call dropping probability and/or quality-of-service degradation. This paper therefore presents a novel mechanism, designed to ensure that the continuity of all sessions of a moving network is seamlessly preserved as it performs handovers to and within micro-mobility- enabled access networks.
    No preview · Conference Paper · Jun 2009