Design of a delay-bounded media relay mechanism for P2P conferencing services on hierarchical overlay networks

P2P-SIP multimedia conference is operating that users share their resource of conference to each other in the network. It can solve the problem, such as centralized loading, single point error and expensive infrastructure. Peer-to-Peer networks have the problem that peer has difference between physical location and virtual location in overlay network. The key of establishing P2P-SIP multimedia conference is to build application multicast efficiently with physical network information. Thus, this paper proposed a delay-bounded media relay mechanism for P2P conferencing services on hierarchical overlay networks. Based on the application-layer multicast structure and the Hierarchical overlay network architecture, the media relay mechanism can improve the transportation efficiency of conferencing stream exchange.