An Overlap Virtual Networks Testbed for Future Real-Time Multimedia Transmission

In this paper, we argue that real-time multimedia streaming service can be deployed over multiple overlapped virtual networks in future Internet. Rather than carrying multimedia packets relying on a single network alone, our method provides network resources redundancy for reliability, avoiding service interrupted due to errors on some particular networks. In addition, it can balance traffic load as large amount of traffic congests a certain network, by which packet losses are reduced greatly. To verify this idea, a testbed based on local VINI is implemented imposing several open source components to realize our proposed idea. And then, by running a multimedia streaming service on this testbed introducing real video sequence source, we gladly find that many benefits are produced, and for the end user they have a better video quality performance.