权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Reliable Multicast Network Configuration

可靠的组播网络配置

基本信息

批准号：
11650400
负责人：
TANAKA Yoshiaki
金额：
$ 2.24万
依托单位：
Waseda University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650400/
关键词：
Reliable Multicast Telecommunication Network Topology 網構成

项目摘要

Reliable multicast has got much attention as a next generation's technology on information delivery systems. It guarantees the information deliveries without errors on large-scale multicasting.However, reliable multicast methods have two major problems. One is that they cannot work well as the number of receivers increases when only the sender retransmits lost packets to all of receivers simultaneously. This retransmission method is called the global recovery. The other is ACK implosion. Network congestion occurs by concentration of many returned ACKs.Local recovery system has been presented to cope with these problems. It can localize the influence of retransmissions by grouping nodes. Several ways of retransmissions, for instance using unicast, multicast, and subcast, have already been proposed.This study focuses on these retransmission methods with local recovery systems since they must be the better solutions for large-scale multicasting on worldwide network. The appropriate retransmission method, however, may depend on network topologies. This paper therefore compares local-recovery-based retransmission methods and finds the suitable one for typical kinds of network topologies ; star, ring, delta-star, and Waxman's model which represents current Internet topology. The suitable network topology for the reliable multicasting is also discussed from the viewpoint of network construction cost.

可靠组播作为下一代信息传输系统的技术，受到了广泛的关注。可靠多播技术保证了大规模多播中信息的无差错传输。一个是，当只有发送者同时向所有接收者重传丢失的数据包时，随着接收者数量的增加，它们无法正常工作。这种重传方法称为全局恢复。另一种是ACK内爆。由于大量ACK报文的集中返回而导致网络拥塞，本地恢复系统就是为了科普这些问题而提出的。它可以通过分组节点来局部化重传的影响。目前已经提出了几种重传方式，如单播、多播和子播，本文主要研究这些具有本地恢复系统的重传方法，因为它们是全球网络上大规模多播的较好解决方案。然而，适当的重传方法可能取决于网络拓扑。因此，本文比较了本地恢复为基础的重传方法，并找到合适的一个典型的网络拓扑结构;星星，环，三角洲-星星，和Waxman的模型，代表当前的互联网拓扑结构。从网络建设成本的角度讨论了可靠组播的网络拓扑结构。