NetALM: Network Based Application Layer Multicast for Multiparty Video Conference in OverLay Networks

Abstract

AbstractThe purpose of this work is to maintain efficient backup routes for reconstructing overlay trees quickly. In most conventional methods, after a nodes leaves the trees, its children start searching for a new parent. In real time applications, this kind of reactive approach is not suited because this approach takes a lot of time to find a new parent. We propose a NetALM: Network based Application Layer Multicast protocol, which is used to form a multicast tree in a hierarchical order. In this proactive approach allows a node to finds its new parent immediately and switch to the backup smoothly. In our proposal, the structure of the overlay tree is resource aware. The higher capability resource nodes will be in the higher level of the tree. This tree structure is used to do smooth data distribution for our multiparty video conference application. In this application, we are dividing the users into two categories are Participants and Spectators. Participants can send both audio and video packets to other ends. However, Spectators can not send any audio and video packets; they can only receive the audio and video packets. Using these two methods we can utilize the internet bandwidth.KeywordsApplication Layer MulticastOverlay treeParticipantsSpectatorpeer to peer