Practical Patching for Efficient Bandwidth Sharing in VOD Systems

Recursive Patching recursively shares existing video streams with asynchronous clients for efficient multicast in large-scale video on demand systems. In this paper, we propose Practical Patching that removes unnecessary data included in transition streams of Recursive Patching. Practical Patching dynamically expands ongoing transition streams when a new request actually arrives at the server. Simulation result confirmed that the proposed technique is better than Recursive Patching in terms of service latency and defection rate.