Nima Nafisi

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Context-aware computing can play a major role to improve the services of mobile networking systems. In this paper, we focus on optimizing handover decisions based not only on the signal quality, but also on the knowledge about the context of mobile devices and networks. Since context information and context processing evolves fast, we propose a flexible,(More)
  • R Ferrús, A Gelonch, O Sallent, J Pérez-Romero, N Nafisi, M Dohler
  • 2005
Beyond 3G wireless networks must be able to coordinate services within a diverse network environment. One of the most challenging problems for coordination is vertical handover (VHO), which is the decision for a mobile node to change the point of attachment between different types of networks. While traditional handover is based on received signal strength(More)
This paper develops a feasible architecture for end-to-end QoS management over B3G networks where multiple heterogeneous radio access networks (RAN) can be coordinated at radio level by means of supporting Common Radio Resource Management (CRRM) functionalities. The presented approach is claimed to be innovative as long as it is inspired in the most(More)
BACKGROUND Molecular diagnostic methods have played and continuing to have a critical role in clinical laboratories in recent years. Therefore, standardization is an evolutionary process that needs to be upgrade with increasing scientific knowledge, improvement of the instruments and techniques. The aim of this study was to design a quality assurance(More)
A link adaptation schemes is proposed to improve the efficiency to support DiffServ traffic over CDMA air interface. To differentiate the resource allocation between DiffServ PHBs and between the in/out profile packets within each AF class, two-level differentiation is done in the proposed scheme: inter-class differentiation and intra-class differentiation.(More)
— In the B3G system considered, which is based on the 3GPP UMTS architecture, the initial hypothesis made in this paper, is that the QoS management of the IP access network is taken in charge by a bandwidth broker. A pre-handover signalling for QoS-aware path selection is investigated with the goal of achieving the " Always Best Connected " paradigm.(More)
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