期刊名称：International Journal of Computer Science & Technology
印刷版ISSN：2229-4333
电子版ISSN：0976-8491
出版年度：2011
卷号：2
期号：2(Version 1)
出版社：Ayushmaan Technologies
摘要：In network communications, there are many methods to deliver data from sources to destinations. During the past few years, we have observed the emergence of new applications that use multicast transmission. In many distributed applications require a group of destinations to be coordinated with a single source. Multicasting is a communication paradigm to implement these distributed applications. However in multicasting, if at least one of the members in the group cannot satisfy the service requirement of the application, the multicast request is said to be blocked. On the contrary in manycasting, destinations can join or leave the group, depending on whether it satisfies the service requirement or not. This dynamic membership based destination group decreases request blocking. Manycast is proposed basing on the adaptation to QoS request, and the measures parameters involved in QoS generally include bandwidth, delay, delay jitter, packet loss rate and cost. Each application requires its own QoS threshold attributes. Destinations qualify only if they satisfy the required QoS constraints set up by the application. Due to multiple constraints, burst blocking could be high. We propose one algorithm to minimize request blocking for the manycast problems. Using NS2 based simulation results, we have analysis these parameters for manycast algorithm and then focuses on introducing how it is simulated based on NS2 and analyzing algorithm performance.ent
关键词：NS2 (NetworkSimulator-2); manycast; optical burst-switched;networks (OBS); quality of service (QoS); simulation.ng.e
