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A System Architecture for Live Immersive 3D-Media Transcoding over 5G Networks

Doumanoglou, Alexandros; Zioulis, Nikolaos; Griffin, David; Serrano, Javier; Phan, Truong Khoa; Jimenez, David; Zarpalas, Dimitrios; Alvarez, Federico; Rio, Miguel; Daras, Petros

The upcoming 5G networks, bring Network Function Virtualization (NFV) capabilities enabling deployment of application service intelligence on their Next Generation Core (NGC). Application specific logic is packaged into Virtual Network Functions (VNFs) so that their instantiation and deployment can be done at any node of the NGC, with their management and orchestration being maintained by the 5G infrastructure. However, such management cannot be optimal without application context. In this paper, we propose a 5G oriented system architecture for a next generation augmented virtuality tele-immersive two-player video game. In the presented video game, real-time 3D-Reconstruction technology is utilized to create 3D avatars of the players and embed them inside the game environment. The application also supports real-time spectating of the game action by a considerable amount of spectators that join the live game via client software designed for desktop PCs, smartphones and tablets, connected through mobile or fixed access networks. To distribute the 3D traffic to such a number of consumers that have different device capabilities and are located at varying geographical locations while offering the highest possible Quality of Experience, is a challenging task. One contemporary way to address this problem is via adaptive streaming. To realize this concept, real-time 3D-Media Transcoders need to be employed. The proposed system architecture considers packaging the aforementioned 3D-Media Transcoders as VNFs that can be deployed on 5G infrastructure. In the paper, it is shown that such an architecture can decrease costs for a given level of offered QoE, with evident benefits for the game service's shareholders. While the application type presented in this paper is fixed, the proposed system architecture can be adopted by other applications of similar context with similar benefits gained from the flexible deployment of virtualised applications in 5G networks.

This work is part of the 5G-MEDIA project which has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 761699.
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