DVTS/XCAST with TCP-Friendly Rate Control

Adaptive-ness of multicast stream is a strongly desired for P2P multicast to be accepted broadly on the Internet. One way to achieve this is use the layered multicast technique. But it was pointed out that there are obstacles to apply it on the Internet. In this paper, we apply TFRC (TCP Friendly Rate Control) scheme onto XCAST, while TFRC is considered basically for unicast. As a proof of concept, we have implemented TFRC with XCAST onto DVTS and we were able to confirm that they achieve necessary characteristics for P2P multicast such as stability, flexibility, fairness and smoothness. These characteristics were independently observed for each sub-path of XCAST tree.