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Creating context-aware ad hoc collaborative systems remains to be one of the primary hurdles hampering the ubiquitous deployment of IT and communication services. Especially under mission-critical scenarios, these services must often adhere to strict timing deadlines. We believe empowering such realtime collaboration systems requires context-aware application platforms working in conjunction with...
As a key enabler of Internet of things, cellular network based Machine-to-Machine (M2M) communications have been growing rapidly in recent years, being used in a wide range of services such as security, metering, health, remote control, tracking, and so on. A critical issue in M2M communications is the energy efficiency as typically the machine devices are powered by batteries of low capacity and...
The evolution of mobile technologies allows the emerging of ubiquitous systems, able to anticipate user needs and to seamlessly adapt to context changes. These systems present the problem of dynamic adaptation in a highly distributed, heterogeneous and volatile environment, since it may be difficult to collect and process context information from distributed unknown sources. In order to facilitate...
Mobile Peer-to-peer (P2P) realizes communications between mobile nodes without any access points. In general, Mobile P2P utilizes IEEE 802.11 Wireless LANs. However, IEEE 802.11 Wireless LANs do not support intelligent energy management schemes. Therefore, nodes should appropriately switch on and off its WLAN interface for reducing energy consumptions. In this paper, we propose energy efficient mobile...
This paper explores the notion of cross-source integration of cloud-based, context-aware information. The objective is to develop a new solution that incorporates remote, web based configuration of Android phones and advances the research area of context-aware information and web applications. It expands the notion of context-awareness harvesting from web applications, enabling automatic adaptation...
With the ongoing growth of mobile Internet usage numbers and the continuous deployment of additional mobile network nodes, the power consumption in mobile networks is increasing at dramatic rates leading to a huge amount of carbon emissions. Therefore, improving energy efficiency in mobile radio networks is of increasing relevance. The reduction of energy consumption in mobile radio networks can be...
In a largely scalable Web services-based environment, context-awareness is concerned with reasoning about the surrounding well-defined context and adapting the interpreted services accordingly (almost) on the server-side, and finally distributing the services to clients in a reliable way through trustworthy network protocols. Most of Web services-based context-aware applications are either partially...
As mobile devices still have limited battery, processing power, memory, and display size, compared to their PC counterparts, they cannot yet execute Virtual Environment (VE) and Online Gaming applications with the same fidelity and quality as their PC counterpart. In response, we have recently witnessed some research with the goal of real-time delivery of VE and multiplayer game content specifically...
Context-Aware Communication (CAC) services enable end-devices or service platforms to adapt their comportment to sensed context information, either instantly or in a deferred way. There is today no available framework for supporting the development of CAC applications in a generic way. After surveying previous works, we propose here a new approach for classifying context-aware communication systems...
Advanced context-aware telecom services require evaluating rules encompassing local or remote, raw or abstract context situations. The meteoric rise of smartphones raises the question of potential deployment of terminal-based context-aware services versus a network-centric one. In this paper we compare these two approaches through the analysis of typical context-aware services.
Due to the high cost of replication, incurred mainly by consistency management, it may be infeasible to use uninformed object replication in collaborative applications in pervasive environments, since resources are constrained, nodes are heterogeneous, and application behaviour is highly dynamic. Consequently, this paper proposes an adaptive replication scheme that dynamically creates and releases...
The Future Internet is foreseen to fully handle multimedia services which have experienced an explosive growth in the recent years. Therefore, improving the scalability of these services is getting crucial. One common approach for this purpose is the deployment of multiple replicas of a server throughout the network. The resulting issue is to direct the user request to the best server. Methods based...
This paper describes a cost-effective infrastructure and implementation for creating dynamic, scalable context-aware networks for collaboration and interaction amongst multiple parties. The infrastructure combines auto-detection and network presence sensing, hybrid peer-to-peer and client-server architectures, autonomous connection negotiation, and real-time web-based interactivity to provide a rich...
Internet video services have experienced an immense popularity in the recent years and will probably be the dominant applications of Future Internet. Therefore, the design of scalable video distribution systems that on the one hand, improve the end-users experience and deal with theirs context heterogeneity and on the other hand, optimize the cost of these services, is becoming a very important and...
Human activity is highly influenced by the context and environment of the user. Presence of other users in the vicinity can also influence the context of use and thus activity. In ubiquitous computing environments, people are surrounded by numerous computing devices helping them to carry out various tasks. However, users seek precise and fine-grained information that is not provided by the computing...
In the ever-changing pervasive computing paradigm, applications, especially those running on resource-scarce mobile devices, have to adapt to the runtime environment as the users are roaming around. Various adaptation techniques, relying on dynamic composition of components, have been proposed by a number of researchers. Nevertheless, most existing approaches only support component selection based...
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