Abstract. The 5G ESSENCE project's context is based on the concept of Edge Cloud Computing and Small Cell-as-a-Service (SCaaS) -as both have been previously identified in the SESAME 5G-PPP project of phase 1-and further "promotes" their role and/or influences within the related 5G vertical markets. 5G ESSENCE's core innovation is focused upon the development/provision of a highly flexible and scalable platform, offering benefits to the involved market actors. The present work identifies a variety of challenges to be fulfilled by the 5G ESSENCE, in the scope of an enhanced architectural framework. The proposed technical approach exploits the profits of the centralization of Small Cell functions as scale grows through an edge cloud environment, based on a two-tier architecture with the first distributed tier being for offering low latency services and the second centralized tier being for the provision of high processing power for computing-intensive network applications. This permits decoupling the control and user planes of the Radio Access Network (RAN) and achieving the advantages of Cloud-RAN without the enormous fronthaul latency restrictions. The use of end-to-end network slicing mechanisms allows for sharing the related infrastructure among multiple operators/vertical industries and customizing its capabilities on a per-tenant basis, creating a neutral host market and reducing operational costs.
Abstract-Successful deployment of new network protocols on the Future Internet is not a trivial task. Deployable protocol design is necessary but not sufficient condition for protocol's success, unless it takes all stakeholders involved in the deployment process into account. This paper investigates the challenges of deploying a new transport protocol on the Internet, using Multipath TCP -a TCP variant that transmits along several network paths at the same time -as an example and proposes a framework for its adoption process based on diffusion theory. The paper distinguishes the roles of adopters and other stakeholders in the deployment process, and presents scenarios that enhance Multipath TCP deployment and adoption. One key finding is that the role of end users is not of significant importance for Multipath TCP deployment, because they are not necessarily in a position to make a conscious adoption decision.
Revealing one's interests in communication has been recognized as a growing problem in the Internet. We postulate that it is desirable for future information retrieval systems to provide privacy in both what information is requested and what information is received, without raising obstacles to the deployment of accounting and access control mechanisms. This paper outlines a solution that fulfills this requirement in the context of broker-based systems, that is, systems in which brokers facilitate the communication between a consumer and a provider (of information). Broker-assisted communication is a common paradigm used in many settings, including contemporary information-centric networking approaches. We present the design and the evaluation of a solution that conceals consumers' interests, without hiding consumer identity or location. The developed solution is applied over a system of hierarchically organized brokers; similar systems are used in many information lookup services. Because in these systems, information is distributed in various locations, traditional private information retrieval (PIR) protocols exhibit significant communication overhead. Our solution achieves up to 97% less communication overhead compared with a PIR protocol, without additional computational overhead.
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