Design and Evaluation of a Multi-source Multi-destination Real-time Application on Content Centric Network

Abstract

Multi-source multi-destination class of applications can range from interactive AR/VR games and high-definition video conferencing to non real-time file sharing applications; and also includes similar applications in other environments including IoT and data center. These applications require efficient synchronization among the end points with varying level of loss and delay tolerance. Also application specific requirements like throughput, end-to-end latency and mobility of end points impose even more stringency. IP based solutions often fail to meet these requirements due to lack of efficient multicast. In this paper we study this problem in the context of multi-party video conferencing system, and propose an information-centric solution based on content-centric networking (CCN). CCN, with its innate support for multicast delivery and service centricity, is used to deliver content and control state in a secure and reliable manner. We address the challenge of synchronizing participant states for a real-time experience through a media agnostic notification framework aided by service functions in the CCN network. Then, we implement a proof-of-concept testbed appropriate for this architecture and demonstrate its impact using scalability, QoE and reliability metrics.