摘要
反馈重发是实现可靠组播的一种有效方式,在利用该方式的一些可靠组播协议中,报文修复机制存在的某些不足影响了可靠组播的效率,其中主要的影响因素是修复报文的发送次数和扩散程度。分析了一些典型可靠组播协议中的报文修复机制,提出了一种新的报文修复机制,该机制利用反馈消息判断出需要修复的大体区域,然后采取措施将修复报文约束在该区域内,最后对该机制的特性进行了分析,并与其它修复机制做了一定的比较。
ARQ is an effective mean of implementing reliable multicast, but there are some shortcomings in recovery mechanisms of some reliable multicast protocols that use ARQ, which influence the efficiency ofreliable multicast. The efficiency is reduced as a result of sending the same packet frequently or sending a packet to many hosts that do not need it. The recovery mechanisms of some typical reliable multicast protocols is analyzed, and a new mechanism is put forward, which makes use of feedback message to determine the area of recovery and sent packets to this area for recovering. Finally, the feature of this new mechanism is analyzed, and some comparisons with other mechanisms are obtained.
出处
《计算机工程与设计》
CSCD
北大核心
2006年第16期3058-3061,共4页
Computer Engineering and Design
关键词
可靠组播
报文
扩散
反馈消息
修复
reliable multicast
packet
diffusion
feedback message
recovery
