Bidimensional model based on region saturation for application layer multicast

This paper describes a new scalable ALM protocol which called BRS, especially designed for low transmission delay applications with large receiver sets. The paper focuses on nodes joining and departure procedure, region saturation is defined as the standard for elementary selection, and DCRM (degree-constrained, minimum radius spanning tree algorithm) for further selection, this helps to achieve an entire optimization for ALM topology. The simulation environment is a transit-stub topology generated using the GT-ITM generator, and the result shows that the model is effective in reducing traffic redundancy of the network, transmitting data with high speed and constringed fleetly in a disordered situation.