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Franke J.,NEC Labs Europe Ltd. | Beyer A.,NEC Labs Europe Ltd. | Cheng B.,NEC Labs Europe Ltd.
IEEE/IFIP NOMS 2014 - IEEE/IFIP Network Operations and Management Symposium: Management in a Software Defined World | Year: 2014

The dramatic growth of mobile devices has led to a significant change in the TV industry. The trend to switch to the cloud is unstoppable, since it promises cost-savings and new ways of generating revenue. One big challenge is still to manage the virtualization of the full functionality of the set-top box in the cloud, so that it can be accessed from anywhere from any device. In this paper we present a platform-as-a-service media solution to addresses this challenge. The focus is to design and implement proper interfaces to enable interactive third-party applications to extend the capability of the virtual set-top box in the cloud. We validate the proposed APIs with some example applications and further discuss its theoretical and practical scalability. To the best of our knowledge, this is the first concrete work to discuss the design and implementation issues of application interfaces for virtual set-top box in the cloud. © 2014 IEEE.

Franke J.,NEC Labs Europe Ltd. | Cheng B.,NEC Labs Europe Ltd.
2013 17th International Conference on Intelligence in Next Generation Networks, ICIN 2013 | Year: 2013

Collaborative Web Browsing (cobrowsing) becomes more and more popular in commercial solutions. Cobrowsing allows different users to share a synchronized common view on a web page as well as sharing the interactions, such as mouse movements, highlighting text or mouse clicks, on this web page with each other. This makes it interesting for a wide range of use cases, such as customer relationship management, call center or online sales. Nevertheless existing solutions are vulnerable to man in the middle attacks by the cobrowsing server when using the secure hypertext transfer protocol (HTTPS) and they leak private data of the user to other third parties, which may potentially misuse them. We present in this paper a solution to these issues by letting a user act as proxy between the web application provider and other users. This enables the user (1) to control which web application data is propagated to whom (2) to enforce privacy policies upon private data within a cobrowse session. We present our implementation, which does not rely on browser plugins or extensions, but only on existing web standards. © 2013 IEEE.

Sembiring K.,NEC Labs. Europe Ltd. | Beyer A.,NEC Labs. Europe Ltd.
Proceedings of the International Workshop on Network and Operating System Support for Digital Audio and Video | Year: 2013

As an economic and scalable solution of providing interactive and adaptive media content across different devices, cloud-based media processing has recently attracted lots of attention from both academic and industry. Within a media cloud, a large number of media processing tasks will be dynamically spawn to run in parallel and then share resource with each other in the cloud. In such a dynamic and shared environment, how to appropriately provision cloud resource to different tasks with regards to both system efficiency and quality of service remains a challenging issue. Existing resource allocation algorithms consider generic task and only focus on maximizing system efficiency, but failed to meet the QoS requirement of media tasks. In this paper, we investigate the relationship between the properities of media tasks and their resource comsumption and accordingly propose a dynamic resource allocation solution. Our solution leverages machine learning technique to predict resource requirement and survival functions to prevent QoS degradation. © 2013 ACM.

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