SPF算法在有线电视网中的应用

Application of SPF Algorithm in Cable TV Network

有线电视网的IP化、双向化发展存在诸多难点,组播作为电视业务中最重要的传输形式,能使传统有线电视网络实现智能化。针对有线电视网中的组播提出一条新的道路,通过SPF算法来计算有线电视网传输链路中最短路径开销,并构建树型结构,从而建立组播协议分发树,以期为传统有线电视网的发展创新做有益的尝试。

There are many difficulties in the development of IP and bidirectional CATV network. Multicast,as the most important transmission form of TV service,can make the traditional CATV network intelligent. This article proposes a new way for multicast in CATV network. SPF algorithm is used to calculate the shortest path in the transmission link of CATV network. A tree structure is designed to establish a multicast protocol distribution tree,in order to make a useful attempt for the development of traditional cable TV networks.