基于网络编码的无线数据流保护

网络编码是一种能显著提升网络传输性能的通信机制。而当前将网络编码应用于无线数据流保护以提高网络生存能力方面的研究还没达到如此完备的程度。本论文旨在建立基于网络编码的无线数据流保护模型，验证并实现建立进行网络编码的网络拓扑的算法。验证网络编码应用于无线数据流保护可以提高网络生存能力、减少网络资源消耗并具有远胜于传统保护的时效优势。在网络中部署和实施网络编码，必须建立适用于网络编码的传输节点拓扑并选择合适的编码模式。对于后者，许多学者出了有效的解决方法，而对于网络拓扑规划问题的研究则相对较少。鉴于此，本文论证了一种编码树拓扑结构算法，该算法与现有的编码模式一起，能够构成完整的网络编码无线数据流保护方案。通过理论论证可以证明应用网络编码方法可以在保护时节约网络资源。仿真实验表明，与传统的链路保护模式相比，使用网络编码的无线数据流保护方法具有更小的时延，也即具有传统保护方法没有的时间优势。

Wireless Data Network Coding Based Current Protection

Network coding is able to significantly improve the transmission performance of the network communication mechanism. And the current study on using network coding to approach better performance of survivability of many-to-one flows in wireless networks has not reached such a level of complete. This paper was designed to verify that network coding for protection of wireless flows can improve survivability of many-to-one flows in wireless networks, reduces network resource consumption and uses less protected time than the traditional methods of protection. In this paper, ! established a network coding-based model on protection of many-to-one wireless flows, achieve a simple kind of coding methods and try to improve it. Using network coding in network protection, we should establish an appropriate kind of network topology and choose correct way to encoding. There are kinds of way to encoding, so in this paper we present a kind of algorithm to establish coding tree topology to make up a complete scheme of protection of many-to-one wireless flows. Using this algorithm, I prove that we use less time and network resource in protection, also adds a little extra CPU consumption on coding.