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Nowadays the need for wireless communication services and networks is continuously increasing for different kind of mobile applications (commercial, entertainment, military, aeronautics, navigation, etc.) Bandwidth management is an important task of the administrative tool to provide quality of service (QoS) for real time applications (voice, video and so on). IEEE 802.11 standard is widely used in...
In this paper, providing Quality of Service (QoS) to mobile hosts belonging to a real-time service class is the main issue and a new path prediction scheme based on Neural Networks (NNs) is proposed, in order to obtain a good management of system resources and service continuity, by making advanced bandwidth reservation on the Access Points (APs) where a generic user will move into. The prediction...
In factory communication systems, wireless networks are likely to complement wired automation networks, rather than replacing them. There is therefore an increasing interest in the way wireless and wired systems will interact and form a hybrid network. The hybrid network architecture proposed in this paper specifically addresses WLAN infrastructures in industrial environments. The paper discusses...
Cross-layer interaction is an indispensable part of cross-layer design, which has been proved to greatly improve the performance of wireless networks. In this paper, a scheme for cross-layer interaction management (CLIM) is proposed. It has the following distinct advantages. Firstly, CLIM achieves efficiency by considering the modularity of protocol stack. Secondly, in CLIM, implementing cross-layer...
We consider the problem of several users transmitting packets to a base station, and study an optimal scheduling formulation involving three communication layers, namely, the medium access control, link, and physical layers. We assume Markov models for the packet arrival processes and the channel gain processes. Perfect channel state information is assumed to be available at the transmitter and the...
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