Abstract: In a Content Distribution Network(CDN) based on overlay networks with network coding technology, a strategy which is to select the right neighbors to transfer block based upon the degrees of them is proposed. The selection probability of each neighbor is determined by its degree. After this strategy is applied, the utilization of network is improved, and the distribution progress is shortened. Simulation experimental results show that the performance of content distribution is obviously better than the baseline system.

Key words: Degree-Based(DB) strategy, Content Distribution Network(CDN), network coding, P2P network

摘要： 在使用网络编码的基于重叠网络的内容分发网络中，针对节点的选择问题，提出使用节点度所决定的概率来选择邻居节点的策略。仿真实验结果表明，该策略可以改进对网络中节点间带宽的利用率，加快内容分发的过程，与现有策略相比，各种性能都有不同程度的 提高。

关键词: 基于节点度的策略, 内容分发网络, 网络编码, 对等网络

CLC Number: 

• TP393