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The Future Internet is an initiative driven by the idea of restructuring the chaotic and unorganized Internet. Current service environments within the Internet are missing important capabilities like performance elasticity, scalability, reliability or seamless interoperability between service providers. The Internet has to become a more secure space enabling new approaches for Quality of Service and...
Mobility in a wireless heterogeneous scenario in which the mobile devices are able to connect to more than one access technology available in their vicinity requires a re-consideration on the access network reselection mechanisms. The present paper describes and evaluates the opportunity of introducing novel access reselection procedures which enable a network provider to optimize the allocation of...
With the development of novel access technologies e.g. LTE, WiMAX etc., the mobile devices are able to establish services over multiple wireless connections with different momentary capabilities. Being imported from the fixed line communication, the current services deployed are lacking an efficient mechanism of adaptation to the momentary connectivity conditions, which deters the efficiency of the...
With the evolution towards mass wireless broadband communication, a novel set of applications tailored for this environment will be developed that are able to communicate their requirements towards core networks and foremost to adopt to a change in access network conditions of users. This paper will present their characteristics and how they can be developed and tested with the 3GPP Evolved Packet...
Diameter protocol is getting more and more important roles in Next Generation Mobile Network Infrastructure. However, in many cases Diameter interfaces are still under standardization. In this paper, we introduce a flexible Diameter based testing system. The strong point of this system is the capability to keep up with the development of Diameter related standards. It is also friendly, scalable and...
Mobility in a wireless heterogeneous scenario in which the mobile devices are able to connect to more than one access technology requires a new architectural development for the network connectivity management. The present paper describes and evaluates a set of architectural options for integrating the novel network discovery and selection functionality in the 3GPP evolved packet core which enables...
The wide adoption of web-based distributed systems and consequently their complexity leads to an increasing demand for performance and QoS testing tools for these systems. Pushing forward open NGN protocols has resulted in a proliferation of benchmarking, interoperability and prototyping tools, yet there is still no solid strategy for integrating these efforts, collecting test information and processing...
The evolution of telecommunication networks towards a NGN may positively impact the transformation of the digital divide, a symptom of the differences in economic and social development between countries, into a digital opportunity. With regard to the telecommunication sector, the NGN evolution with its standardization process and the establishment of open APIs provides a more accessible framework...
The IP Multimedia Subsystem (IMS) as defined by the 3GPP emerges as blueprint for a central architecture to provide Next Generation Network (NGN) services. As overlay architecture for IP based access networks, it provides standardized interfaces to services which will merge the advantages of traditional telephony networks with the benefits of Internet services. This paper will evaluate how good the...
The IP multimedia subsystem (IMS) as an overlay architecture for IP based core networks is the target of many trials with mobile and fixed network operators these days since it promises to enable fixed mobile convergence. The Open IMS Core project of the Fraunhofer Institute for Open Communication Systems (FOKUS) is based upon open-source software and offers the core network functionality of an IMS,...
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