可靠组播差错恢复研究综述

A Survey of Reliable Multicast Error Recovery Mechanisms

组播技术提供了一种一对多或者多对多的数据传输模型,提高了数据传输效率,但是组播本身仅提供尽力而为的服务,不能保证可靠。由于网络拥塞,链路或者节点故障等原因,丢包时有发生。物联网警报信息和重要文件分发等一些应用要求接收者必须接收到完整数据,因此可靠组播差错恢复是一个重要研究课题。随着网络技术发展,涌现出了新型组播,新的可靠组播机制被提出。本文对可靠组播中差错恢复的相关工作进行了充分调研,首先介绍了差错恢复常用的保障技术及特点,然后对现有的可靠组播差错恢复的研究工作进行了详细介绍,最后提出了未来可靠组播可以研究的方向。

Multicast technology provides a one-to-many or many-to-many data transmission model to improve data transmission efficiency,but multicast itself only provides best-effort services and cannot guarantee reliability.Due to network congestion,link or node failure,etc.,packet loss occurs from time to time.Some applications such as IoT alarm information and important document distribution require the receiver to receive complete data,so error recovery of reliable multicast is an important research topic.With the development of network technology,new types of multicast have emerged,and new reliable multicast mechanisms have been proposed.This article fully investigates the related work of error recovery in reliable multicast.First,it introduces the commonly used guarantee technology and characteristics of error recovery.Then,it introduces the existing research work of reliable multicast error recovery in detail,and finally summarizes this article.