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It has been estimated that by the end of 2020 there will be 50 billion connected devices world-wide. Such projections entice the industry to explore and tap a wide range of opportunities that the M2M (Machine-toMachine) communication concept offers, enabling novel business cases, enhanced workflow efficiency and improved quality of life. It is therefore no(More)
Wireless communication technologies enable communication among different devices that are within a certain radius. Although, this radius is definite, communication when using wireless communication technologies is more flexible than when using wireline approach. This paper presents results from a measurement study where we measured energy consumption of(More)
This paper presents a context-aware system that uses Machine-to-Machine communication to retrieve sensor data collected by an Android operating system smartphone. It uses the eXtensible Messaging and Presence Protocol for communication with a remote server where data are stored, while both ends are implemented in the Open Service Gateway initiative(More)
Machine-to-Machine (M2M) systems and technologies currently constitute a hot topic in the field of Information and Communication Technology (ICT), and reflect an increasing need for technologies enabling applications in diverse areas, as well as interactions between continuously increasing numbers of connected devices. Important participants in making M2M(More)
This paper presents a proposal for modeling agent mobility using UML Sequence Diagram. Our notation is focused on representing agent migration path and includes modeling of three basic mobility elements: agent creation, mobility path and current agent location. Four variants of graphical notation are presented. In a case study we explain one variant of(More)
In this article we propose a novel approach, enabled by software agents, in mobile service provisioning process: energy-efficient collaborative downloading. The main idea is that mobile users, represented with their agents and corresponding profiles, interested in the same content download some parts directly from a service server and others afterwards(More)
The reduction of cost and complexity is a key driver in the evolution of mobile networks. This reduction not only applies to the pre-operational state (e.g. the deployment phase of a new network), but to the operational state as well. During the operational state, self-optimization processes can be performed to reduce the operating expenses (OPEX) of(More)
It has been estimated that by the end of 2020 there will be 50 billion connected devices in Machine-to-Machine (M2M) networks. Such projections should encourage us to deal with the corresponding problems in heterogeneous M2M systems. First of all, devices can communicate through different access technologies (e.g. wireline, 2G/3G, WiFi, Bluetooth) and their(More)
Recent technical advancements in computing devices and communication networks, combined with changes in the way people use Information and Communication Technology (ICT) systems, have transformed the ICT industry. In this paper, we present the Collaborative Urban Computing (CUC) paradigm which supports serendipitous cooperation between a set of users(More)