随机网络编码数据传输的仿真实现

Simulation and Implementation of Data Transmission Based on Random Linear Network Coding

基于随机网络编码方法,构造了在实验室内实现单源组播网络数据传输的仿真模型:用局域网内的网络终端代表单源组播网络的节点,以IP地址和端口号代表有向信道,采用UDP网络通信实现数据传输,从而对单源组播网络进行了仿真。运用Java编程实现了有限域的算术运算,根据随机网络编码的编码规则,分别编写了单源组播网络的源节点、中间节点和宿点的工作程序,形成了一个完整的软件系统,该仿真模型可以适合于任意单源组播网络。

Based on random network coding, a simulation model is created, which can implement data transmission for single-source multicast network in laboratory. In a single-source multicast network; a node is represented by a terminal in a local network, a directed channel is represented by a socket(an IP address and a port number), and an UDP network communication denotes data transmission in directed channel, which can simulate a single-source multicast network.. With Java programming, we implement the arithmetic operation of limited fields, and write respective program for source node, interval node and rank node based on coding rule of random network coding method. These programs form a whole software system. The presented simulation model can be fit for general single-source multicast network.