Scheduling Strategy for Realistic Implementation of Video on Demand over IPTV System

The tradeoffs in employing multicasting technology for implementing large scale video on demand (VoD) over Internet Protocol Television (IPTV) system, in general, come to the scheduled multicasting streams and limited video or television program selections. The scheduling strategies presented in this paper will provide several advantages. First, we proposed a near Video on demand architecture combining multicasting and unicasting batching with no scheduled multicasting stream. Second, we dynamically adjust the admission threshold to alleviate the server loads and improve bandwidth utilization. The idea of virtual community with the introduction of the chatting robots in our system is constructed to fulfill the dynamic adjustment of the batching time. Key-Words: multicast streaming, IPTV, VoD, virtual community