数字视频广播中可靠组播的实现

Reliable Multicast Based on Digital Video Broadcasting

数字视频广播是一种新型的电视广播技术 ,它和计算机技术相融合 ,利用现有的有线电视网络实现大范围远距离的可靠内容的广播。由于不是所有的主机都需要这些报文 ,因此IP广播浪费了网络资源 ,而将IP组播技术用于数字视频广播 ,能有效地利用网络资源。

Digital video broadcasting is a new TV broadcasting technology, which combines with computer technology, utilizes existing CATV network to realize reliable broadcasting in wide range and long distance. The use of IP broadcast can waste more network resources because not all computer require those messages. Therefore, we can adhibit IP multicast technology for digital video broadcasting to make use of network resource effectively.