Research on the NAK-compression-based reliable multicast protocol

With the expanding of the scope of the multicast application,people have a higher demand in the reliability of multicast applications,especially in the unstable wireless network,and a reliable multicast transport protocol based on the negative acknowledgement(NAK) has been put forth.The paper improves the NAK-based reliable multicast transport protocol based on the analysis of the typical multicast network model.The improved protocol compresses the NAK effectively,reduces the required bandwidth,enhances the real-time property and scalability of the systems,and improves the reliability of the multicast,which can be proved by the results of the NS simulation.