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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...
Digital Identity has grown separately in the IP Multimedia Subsystem (IMS) and the Internet in general. On the one hand secure but walled garden services are offered on the other hand the focus is on openness and third party integration. However, future Telco-business needs an inter-working of IMS and Internet. This paper discusses use cases, economical benefits and technical solutions for bridging...
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...
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...
This paper outlines the design and implementation of a prototypical IMS online charging architecture compliant to 3GPP Rel. 6 specifications for the Open IMS Playground of the Fraunhofer Institute FOKUS. It describes the integration of an IMS Gateway Function (IMS GWF) into a SIP application server to be able to carry out IMS session control for prepaid subscribers as well as service level credit...
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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