应用层语义可靠的自适应多播

Internet上的可靠多播具有很大的应用前景,但是同时也面临着挑战,主要是因为Internet的异构性以及IP Multicast仍不能广域内得以实现.提出了一种应用层语义可靠的自适应多播体系结构(application semantics reliable multicast,简称ASRM).ASRM不以IP Multicast为基础,而是采用一种混合IP单播和多播的方法来实现多点数据通信.ASRM采用一种简单、自然,且具有更好的伸缩性的方法来命名多播会话,并可以在转发过程中,根据变换模型、变换规则和

An Application-Level Semantic Reliable Multicast Architecture for the Internet

Reliable multicast is a useful network service but challenged by the Internet heterogeneity and the nonsupport of IP Multicast in wide-area Internet. In this paper, an application-level semantic reliable multicast (ASRM) is presented, which realizes application-level semantic reliable multicast data delivery. ASRM uses a hybrid way that combines unicast delivery with multicast delivery instead of using global IP multicast as the basis. ASRM provides a simpler and more natural way to name and locate the sessions.During the data forwarding,ASRM can use application-defined semantics to transcode content according to the transcoding models,rules and user'preferences.Thus,it can cope with the heterogeneity problem very well.ASRM is suitable for wide-area, limited scale,reliable multicast applications.