Prosuming live multimedia content in 5G-enabied smart cities

This paper presents a localized crowd-sourced multimedia production and distribution workflow to enable today's mobile producers of multimedia content to serve their content in real-time to other users, who may be both located nearby or remote to the producers, while at the same time drastically reducing the bandwidth utilization, both in uplink...

Experimental Evaluation of Group Communications Protocols for Data Dissemination at the Tactical Edge

Data dissemination is one of the fundamental requirements for any military network. Types of data include Situation Awareness data such as position reports, sensor data, and Commander's Operational Orders and Intelligence Reports. Different data types have different dissemination patterns and requirements. Some data types such as position...

Experimental Evaluation of Group Communications Protocols for Tactical Data Dissemination

Network-centric warfare depends on the timely dissemination of battlefield information for Situation Awareness (SA) and Command and Control (C2). A significant percentage of SA and C2 data is sent to multiple recipients at the same time, which naturally calls for group communication protocols for efficient dissemination. Several variations of...

Telling autonomous systems what to do

Recent progress in Artificial Intelligence, sensing and network technology, robotics, and (cloud) computing has enabled the development of intelligent autonomous machine systems. Telling such autonomous systems "what to do" in a responsible way, is a non-trivial task. For intelligent autonomous machines to function in human society and...

Cloudified mobility and bandwidth prediction in virtualized LTE networks

Network Function Virtualization involves implementing network functions (e.g., virtualized LTE component) in software that can run on a range of industry standard server hardware, and can be migrated or instantiated on demand. A prediction service hosted on cloud infrastructures enables consumers to request the prediction information on-demand...

Performance assessment and Self-Organisation of Virtual Sectorisation in a realistic LTE network

Active Antenna Systems (AAS) technology is one of several advanced features that enable a mobile network operator to cost-efficiently increase its network capacity to cope with the exponential mobile data traffic growth and the ever more demanding performance requirements. AAS can be exploited to perform e.g. Virtual Sectorisation (ViS), i.e....

DREAM: An ICT architecture framework for heterarchical coordination in power systems

Agent based techniques are used to coordinate demand and supply for increasing the embedding capacity of dispersed, badly predictable, renewable energy based power systems. VPPs (Virtual Power Plants) using this technology have demonstrated their feasibility in field tests and currently are scaled up to satisfy requirements for massive rollout ...

Self-Optimisation of Vertical Sectorisation in a Realistic LTE Network

Vertical Sectorisation (VS) is a feature that exploits the capabilities of Active Antenna Systems (AAS) to improve service performance and network capacity, by splitting a single cell into an inner and outer sector. The attained gains primarily depend on the suitable and timely (de)activation of VS in response to the observed/estimated traffic...

Mobility and bandwidth prediction as a service in virtualized LTE systems

E2E blocking probability of IPTV and P2PTV

Increased Internet speeds together with new possibilities for tailor-made television services have spurred the interest in providing television via the Internet. Several television services are readily available and both IP-layer and application-layer (P2P) technologies are used. When disregarding commercial influences, customers will choose for...

A distributed topology information system for optical networks based on the semantic web

The research networking community has embraced novel network architectures to provide e-Science applications with dedicated connections instead of shared links. IP and optical services converge in these new infrastructures to form hybrid networks. Lightpaths are the services offered to clients in the optical portion of the network. They are...

On the Quality of Experience of SopCast

Peer-to-Peer (P2P) file sharing has become immensely popular in the Internet. Recently, there has been a growing interest in academic and commercial environments for live streaming using P2P technology. A number of new P2P digital television (P2PTV) applications have emerged. Such P2PTV applications are developed with proprietary technologies...

On the potential of personal networks for hospitals

Objective: Today, there are many barriers that prevent seamless electronic voice and data communication with remote content and services that the user wants to access at a certain time and place. This is especially the case in hospitals, where the communication needs are very complex and context dependent, and where strict privacy and safety...

Effects of distributed teamwork and time pressure on collaborative planning quality

Distributed teamwork is not without its difficulties. The detrimental aspects of geographical dispersion of team members on effective teamwork are often invoked to justify reluctance 'to go virtual', despite the fact that for some tasks, and under some conditions, distributed environments may be as good as, or perhaps even better than, meeting...

An audit logic for accountability

We describe a policy language and implement its associated proof checking system. In our system, agents can distribute data along with usage policies in a decentralized architecture. Our language supports the specification of conditions and obligations, and also the possibility to refine policies. In our framework, the compliance with usage...

Virtual reality applied to teletesting

The activity "Virtual Reality applied to Teletesting" is related to a wider European Space Agency (ESA) initiative of cost reduction, in particular the reduction of test costs. Reduction of costs of space related projects have to be performed on test centre operating costs and customer company costs. This can accomplished by increasing the...

Learner Support to Foster Self-Explanation in the context of Advanced Distributed Learning

Several studies suggest that group-oriented, collaborative activities can have a positive impact on individual learning. The effect of collaborative activities on learning appears to be the result of several underlying mechanisms. In this research we focus on a mechanism that has shown to be a powerful cognitive mechanism for learning, and which...