44,641 research outputs found

    Balancing Requirements For Customer Value Of Mobile Services

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    Designing business models for mobile services is a complex undertaking because it requires multiple actors to balance different design requirements. A business model can be seen as a blueprint of four interrelated components or domains: service, technology, organization and finance domain. Little attention has been paid to how these different domains are related to each other. This knowledge is needed to enhance our understanding of what constitutes a viable business model. In this paper the connections between two of these domains, namely service and technology domain, are explored by analysing critical design issues in business models for mobile services, i.e. targeting, creating value, branding and customer retention in the service domain, and security, quality of service, management of service profiles, system integration and accessibility in the technology domain. A causal framework is developed, which link these critical design issues to expected customer value and business model viability.

    More than 'pretend competition' in German telecommunications

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    In a globally networked economy, the telecommunications sector – which was long in the hands of a state-run company – must not close its eyes to competition. All the same, Germany was late in starting to deregulate the industry and so far has concentrated more on competition among service providers than among network operators. Even though several steps have been taken to open the telecommunications market further, the former monopolist continues to dominate it so strongly that critics speak of mere 'pretend' competition.ICT, fixed line, telephony, regulation

    Living on the Edge: The Role of Proactive Caching in 5G Wireless Networks

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    This article explores one of the key enablers of beyond 44G wireless networks leveraging small cell network deployments, namely proactive caching. Endowed with predictive capabilities and harnessing recent developments in storage, context-awareness and social networks, peak traffic demands can be substantially reduced by proactively serving predictable user demands, via caching at base stations and users' devices. In order to show the effectiveness of proactive caching, we examine two case studies which exploit the spatial and social structure of the network, where proactive caching plays a crucial role. Firstly, in order to alleviate backhaul congestion, we propose a mechanism whereby files are proactively cached during off-peak demands based on file popularity and correlations among users and files patterns. Secondly, leveraging social networks and device-to-device (D2D) communications, we propose a procedure that exploits the social structure of the network by predicting the set of influential users to (proactively) cache strategic contents and disseminate them to their social ties via D2D communications. Exploiting this proactive caching paradigm, numerical results show that important gains can be obtained for each case study, with backhaul savings and a higher ratio of satisfied users of up to 22%22\% and 26%26\%, respectively. Higher gains can be further obtained by increasing the storage capability at the network edge.Comment: accepted for publication in IEEE Communications Magazin

    Personal security in travel by public transport : the role of traveller information and associated technologies

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    Acknowledgement This research reported in this paper has been funded by a grant award from the Engineering and Physical Sciences Research Council: EP/I037032/1.Peer reviewedPublisher PD

    Wi-Fi Offload: Tragedy of the Commons or Land of Milk and Honey?

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    Fueled by its recent success in provisioning on-site wireless Internet access, Wi-Fi is currently perceived as the best positioned technology for pervasive mobile macro network offloading. However, the broad transitions of multiple collocated operators towards this new paradigm may result in fierce competition for the common unlicensed spectrum at hand. In this light, our paper game-theoretically dissects market convergence scenarios by assessing the competition between providers in terms of network performance, capacity constraints, cost reductions, and revenue prospects. We will closely compare the prospects and strategic positioning of fixed line operators offering Wi-Fi services with respect to competing mobile network operators utilizing unlicensed spectrum. Our results highlight important dependencies upon inter-operator collaboration models, and more importantly, upon the ratio between backhaul and Wi-Fi access bit-rates. Furthermore, our investigation of medium- to long-term convergence scenarios indicates that a rethinking of control measures targeting the large-scale monetization of unlicensed spectrum may be required, as otherwise the used free bands may become subject to tragedy-of-commons type of problems.Comment: Workshop on Spectrum Sharing Strategies for Wireless Broadband Services, IEEE PIMRC'13, to appear 201
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