Papers by Yiouli Kritikou
This document presents the OneFIT functional and system architecture for the management and contr... more This document presents the OneFIT functional and system architecture for the management and control of infrastructure coordinated opportunistic networks (ONs). The most relevant building blocks "Cognitive management System for the Coordination of the Infrastructure" (CSCI) and the "Cognitive Management system for the Opportunistic Network" (CMON) are described.
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Cognitive radio networks operation relies on the capability to gather information about the surro... more Cognitive radio networks operation relies on the capability to gather information about the surrounding environment, as regards both internal network status (presence and capabilities of other devices belonging to the same network) and external systems potentially coexisting with the cognitive network. In particular, retrieving information at the local level is a function required to all wireless networks, and goes under the name of neighbour discovery. Under this aspect, cognitive networks make no exception. Similarly, cognitive networks share with traditional wireless networks the necessity of a function for retrieving and exchanging information on a network wide scale, referred to in the following as network discovery. The definition of efficient neighbour and network discovery strategies for cognitive networks, taking into account their specific characteristics, is one of the goals of the research activities undergoing within the framework of the ACROPOLIS NoE. In this work, nei...
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2008 Ieee 19th International Symposium on Personal Indoor and Mobile Radio Communications, Sep 1, 2008
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Telematics and Informatics
The continuously increasing need for mobility has brought about not only significant facilities i... more The continuously increasing need for mobility has brought about not only significant facilities in several aspects of human initiative, but also growing traffic congestions, a phenomenon that leads to unpleasant everyday situations at a short time level, but in the long run also to the degradation of the level of quality of living in large cities and the alienation between people. The management of traffic stands, thus, as a fundamental prerequisite for confronting those issues, enhancing transportation and improving the social fabric. This paper considers the concept of car pooling as a structured approach to this problem, by specifying, developing and validating a mobile-community-driven system for collaborative transportation, namely the ''transportation management-car pooling system''. This system is capable of proposing optimal, reliable and secure community matches (taking into consideration personality features, talking interests, driving style, etc.), based o...
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According to the B3G concept, diverse radio access technologies (RATs) can converge into one comp... more According to the B3G concept, diverse radio access technologies (RATs) can converge into one composite radio environment, where the user is "always best connected" and can move between the various technologies seamlessly. Cognitive wireless networks [1],[2] have emerged as a complementary concept to B3G networks. In general, cognitive systems establish their behaviour, in a reactive or proactive manner, based on external triggers (environment), as well as their goals, principles (policies, rules), experience and knowledge. This requires, among other things, advanced terminal management functionality for dynamically selecting and adapting to the most appropriate technology, in a seamless, transparent and robust manner. This paper emphasizes on the management of user equipment and discusses on how to further progress the relevant work. The work of this paper complements legacy methods for network selection by presenting cognitive mechanisms and an associated knowledge-based ...
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VTC Spring 2009 - IEEE 69th Vehicular Technology Conference, 2009
The continuous evolution of wireless systems has resulted in a number of new and powerful wireles... more The continuous evolution of wireless systems has resulted in a number of new and powerful wireless networking standards. The concept of Beyond the Third Generation Systems (B3G) emerged in an attempt to exploit the variety of the available access standards to the benefit of end-users, operators and manufacturers. In this context, a key topic in the research area of B3G/4G
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VTC Spring 2009 - IEEE 69th Vehicular Technology Conference, 2009
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VTC Spring 2009 - IEEE 69th Vehicular Technology Conference, 2009
The continuous evolution of wireless systems has resulted in a number of new and powerful wireles... more The continuous evolution of wireless systems has resulted in a number of new and powerful wireless networking standards. The concept of Beyond the Third Generation Systems (B3G) emerged in an attempt to exploit the variety of the available access standards to the benefit of end-users, operators and manufacturers. In this context, a key topic in the research area of B3G/4G
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ABSTRACT Cognitive radio networks operation relies on the capability to gather information about ... more ABSTRACT Cognitive radio networks operation relies on the capability to gather information about the surrounding environment, as regards both internal network status (presence and capabilities of other devices belonging to the same network) and external systems potentially coexisting with the cognitive network. In particular, retrieving information at the local level is a function required to all wireless networks, and goes under the name of neighbour discovery. Under this aspect, cognitive networks make no exception. Similarly, cognitive networks share with traditional wireless networks the necessity of a function for retrieving and exchanging information on a network wide scale, referred to in the following as network discovery. The definition of efficient neighbour and network discovery strategies for cognitive networks, taking into account their specific characteristics, is one of the goals of the research activities undergoing within the framework of the ACROPOLIS NoE. In this work, neighbour and network discovery solutions currently under investigation within the ACROPOLIS joint research activities are presented, and future research lines are identified. The paper first presents algorithms and results on neighbour discovery and Medium Access Control, and moves then to network wide protocols by presenting the work carried out in ACROPOLIS on routing for underlay cognitive networks. The paper provides then an overview on the common simulation platform developed within ACROPOLIS to investigate neighbour and network discovery, and finally discusses future research directions on such topics. Index Terms ?? Cognitive radio, neighbour discovery, network discovery
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This deliverable reports the final feasibility evaluation results of the solutions for the autono... more This deliverable reports the final feasibility evaluation results of the solutions for the autonomous cognitive radio functionalities developed in WP4. A description of the tools (simulation or analytical models) that have been used to evaluate the feasibility of each solution is presented. Furthermore, results of empirical feasibility tests, obtained for each of the autonomous functionalities, are reported.
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This work investigates the impact of neighbour discovery on distributed learning schemes applied ... more This work investigates the impact of neighbour discovery on distributed learning schemes applied on optimal network selection based on the acquisition by the selecting device of context information on the capabilities and status of surrounding networks. The work introduces the problem of neighbour discovery in multiple channel and cognitive networks, and identifies the trade-offs between neighbour discovery performance and overall network performance. Next, an optimal network selection algorithm based on distributed learning is introduced, and key parameters and components relevant to its operation are presented, focusing in particular on the common control channel required to exchange the context information. Finally, the paper discusses the relation between neighbour discovery and the distributed learning process at the basis of the context information acquisition; a model for mapping the learning process on a neighbour discovery problem is proposed, and the potential impact of ne...
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The current circumstances on a worldwide level urgently impose to exploit technology in order to ... more The current circumstances on a worldwide level urgently impose to exploit technology in order to reduce environmental pollution, CO2 emissions and waste. Moreover, current technologies and the provisioned evolution steps take into consideration these facts and contribute to achieve greener footprint. This paper presents the status of the Cognitive Management Technologies and the evolutionary directions of the research that is
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Innovations in E-learning, Instruction Technology, Assessment, and Engineering Education, 2007
—The following paper discusses on the evolution of cognitive networks in conjunction with the dev... more —The following paper discusses on the evolution of cognitive networks in conjunction with the development of advanced e-services, making a brief description of their role in modern society. E-services are delivered through a specific model, which is described in detail, and find several applications in peoples’ everyday activities. E-learning has proven to be a very important application of e-services, since
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Procedia - Social and Behavioral Sciences, 2014
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Evolution of Cognitive Networks and Self-Adaptive Communication Systems, 2013
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Technologies for the Wireless Future, 2008
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Papers by Yiouli Kritikou