A new approach for receiver driven Layered multicast congestion Control with improved round trip Time estimation

Abstract

This research introduces an efficient and new multicast congestion newlinecontrol algorithm for asymmetric paths with improved Round Trip Time newline RTT calculation In the current Internet scenario streaming applications newlinebecome popular and which use multicast approach Congestion control in newlinemulticast protocol is a difficult task and lot of research is going on in this area newlineTo enhance the bandwidth utilization instead of symmetric path an newlineasymmetric path is a viable alternative But the existing algorithms are not newlinedirectly applicable for such application In this thesis we propose a new newlineprotocol in which the receiver explicitly adjusts its reception rate according to newlinethe network conditions using TCP throughput equation and Packet Pair probe newlineIts effectiveness has been checked by using simulation techniques The most newlinepopular network simulator ns 2 is used in this analysis newlineCongestion is the major problem in the Internet multicast There is newlinea growing set of non TCP applications such as Internet audio players IP newlinetelephony video conferencing and bulk file transfer which are generally newlinecalled as multicast applications So far there have been three directions of newlinemulticast congestion control proposed namely sender driven router based newlineand receiver driven Out of these receiver driven with multi rate is more newlinesuitable for today s Internet called Multi Rate Multicast Congestion Control newline MR MCC Internet is having a very large number of computers with newlinedifferent capacities newline newline