Design and Performance Evaluation of New Mechanisms for the Future Internet - New Paradigms and Economic Aspects

互联网对社会和经济目的的重要性在过去几年中有所增加，特别是由于智能手机和平板电脑的市场大幅增长。然而，用于互联网中的流量管理的机制仍然基于自其最初开始以来未改变的概念，并且不能科普用户、网络运营商和服务提供商的日益增长的要求，诸如用户感知的体验质量（QoE）和服务提供商的经济考虑。为了应对新的需求，ÖkoNet项目在设计新的交通管理机制时考虑了所有相关利益方的经济利益。其中一个例子是在ÖkoNet第一阶段研究的视频内容的高效传输。这里，考虑了用户设备的QoE、能耗和网络运营商的成本。针对在移动的网络运营商处实现的该场景开发了QoE监测机制。在本项目的第二阶段，以两个正交用例为例，研究了流量管理机制设计原则“经济流量管理”和“为争斗而设计”的适用性。从用例中获得的结果被集成到当前或未来机制开发人员的指南中，并且可以适应正在开发的特定机制。此外，该指南还讨论了技术机制评估的具体方法，同时考虑到经济影响以及潜在的范例。第一个用例考虑了在内容中心网络（CCN）中使用HTTP自适应流媒体的视频内容的高效分发。特别考虑了关于QoE的视频传播性能、域间流量的成本和可用视频源的有效使用。第二个用例研究了移动的云计算，评估了云资源消耗、用户设备功耗、QoE和移动的网络信令负载等方面的成本。为了验证从模型中获得的知识，建立了一个原型，用于评估现实世界的约束下开发的策略。

The importance of the Internet for social and economic ends has increased over the last years, especially due to the large market growth for smartphones and tablet computers. However, the mechanisms used for traffic management in the Internet are still based on concepts unchanged since its initial inception and cannot cope with the increasing requirements of users, network operators and service providers, such as the Quality of Experience (QoE) perceived by the user and economic considerations of the service providers. In order to deal with the new requirements, the project ÖkoNet considers the economic interests of all involved stakeholders during the design of new traffic management mechanisms.One example for this is the efficient transmission of video content studied during the first phase of ÖkoNet. Here, the QoE, energy consumption of user equipment and costs for the network operators were considered. A QoE Monitoring mechanism was developed for this scenario which was implemented at a mobile network operator. Furthermore, the developed QoE models were recommended for ITU standardisation.In the second phase of this project, the applicability of the traffic management mechanism design principles 'Economic Traffic Management' and 'Design for Tussle' is studied on the example of two orthogonal use cases. Results obtained from the use cases are integrated in a guideline for developers of current or future mechanisms and can be adapted for the specific mechanism under development. Furthermore, the guideline discusses specific approaches for the evaluation of technical mechanisms while considering economic influences as well as the underlying paradigms.The first use case considers the efficient distribution of video content using HTTP adaptive streaming in content centric networks (CCN). The performance of video dissemination regarding QoE, cost of inter-domain traffic and efficient use of available video sources are especially considered. The second use case studies Mobile Cloud Computing and evaluates costs for consumption of cloud resources, power consumption of the user equipment, QoE and the signalling load on the mobile network.For both scenarios, traffic management mechanisms are developed iteratively using methods from analytic and simulative performance evaluation. In order to validate the knowledge obtained from the models, a prototype is built, which is used to evaluate the developed strategies under real-world constraints.