Performance-aware replication of distributed pre-recorded IPTV content

Video recording in IPTV systems is a promisingservice that provides time-shifted services in relation to storing TV content closer to user devices such as set-top boxes. Existingapproaches do not support collaboration between nodes which have correlated contents, a fact that can affect the performance of the overall system. To make this service more interactive and proactive, this paper presents the architecture using theSmart Personal Information Network (Smart PIN) as a novel performance-based content sharing network for IPTV content which uses a user-centric utility-based Multimedia Data Replication Scheme (MDRS). This allows the exchange of data based on both network performance and user interest in exchangedmultimedia content in order to achieve efficient content sharing. The proposed solution is evaluated through extensive simulations and results show much improved behaviour in comparison with two other existing general purpose data replication schemes