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文章针对传统共享树组播算法在网络资源消耗和负载平衡方面的不足,提出了一种基于网络编码的共享树组播算法。该算法在减小网络编码节点个数,最大限度提高链路共享程度的情况下,对多点到多点的组播建立具有网络编码功能的共享树进行数据传输。仿真结果表明,该算法较传统共享树组播方法而言更能有效减少波长资源消耗并均衡网络负载。
Aiming at the shortage of traditional shared tree multicasting algorithm in network resource consumption and load balancing, this paper proposes a shared tree multicasting algorithm based on network coding. The algorithm reduces the number of network coding nodes and maximizes the degree of link sharing, and establishes a shared tree with network coding for data transmission from multi-point to multi-point multicast. The simulation results show that this algorithm can reduce the wavelength resource consumption and balance the network load more effectively than the traditional shared tree multicast method.