Hierarchical reliable multicast: performance analysis and placement of proxies
Hierarchical reliable multicast: performance analysis and placement of proxies
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分层可靠多播：性能分析和代理放置
DOI：
10.1145/354644.354648
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
F. Tobagi
中科院分区：
文献类型：
--
作者：
A. Markopoulou;F. Tobagi
使用代理进行本地错误恢复和拥塞控制是一种可扩展的技术，用于克服可靠多播 (RM) 中的许多众所周知的问题。其想法是将多播传送树划分为子组，这些子组形成以源为根的层次结构，因此称为“分层可靠多播”(HRM)。对于每个子组，都有一个指定的节点，即代理，负责收集来自子组的反馈并在本地重传丢失的数据包。任何 RM 协议的性能都受到底层组播路由树及其丢失特性的影响。此外，HRM 方法的性能在很大程度上取决于树的适当划分和代理的选择。在本文中，我们首先对人力资源管理问题进行建模，然后定义和计算适当的绩效指标，最后给出有关代理最佳位置的见解。
The use of proxies for local error recovery and congestion control is a scalable technique used to overcome a number of well-known problems in Reliable Multicast (RM). The idea is that the multicast delivery tree is partitioned into subgroups that form a hierarchy rooted at the source, hence the term Hierarchical Reliable Multicast (HRM). For each subgroup, there is a designated node, the proxy, which is responsible for collecting the feedback from the subgroup and for locally re-transmitting the lost packets. The performance of any RM protocol is affected by the underlying multicast routing tree and its loss characteristics. Furthermore, the performance of the HRM approach, in particular, strongly depends on the appropriate partitioning of the tree and the selection of proxies. In this paper, we first model the HRM problem, then define and compute appropriate performance metrics and finally give insights on the optimal location of proxies.