通信网络实验报告

三、实验结果分析

各发送节点发包间隔较大，当网络中发送节点较少时，网络还未饱和。逐渐往网络中增加负载，网络总吞吐量逐渐增大，之后，网络吞吐量逐渐趋向于平稳，此时，网络即达到了饱和状态。 四、思考题

1、总结IEEE 协议饱和吞吐量和哪些因素有关。

任选一个时隙，网络中有节点在发送数据的概率 当有节点在发送数据包时，数据包发送成功的概率 数据包发送成功和发送失败所需的时间

2、为什么在数据包长度较长时，采用RTS/CTS模式更合理

\隐藏终端\多发生在大型单元中（一般在室外环境），这将带来效率损失，并且需要错误恢复机制。当需要传送大容量文件时，尤其需要杜绝\隐藏终端\现象的发生。

实验三 动态源路由协议路由选择验证

一、实验目的 1、 2、

了解DSR路由协议的优缺点。

理解DSR路由协议中路由发现过程和路由维护过程。

3、掌握DSR路由协议性能的仿真分析方法。 二、实验结果

Time(s): , Node: 1, Route path: 2 Time(s): , Node: 1, Route path: 2 Time(s): , Node: 1, Route path: 2 Time(s): , Node: 1, Route path: 2 Time(s): , Node: 1, Route path: 2 Time(s): , Node: 1, Route path: 2 Time(s): , Node: 1, Route path: 2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 4-2 Time(s): , Node: 1, Route path: 5-4-2

Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 5-4-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2

Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 3-2 Time(s): , Node: 1, Route path: 2 Time(s): , Node: 1, Route path: 2 Time(s): , Node: 1, Route path: 2 Time(s): , Node: 1, Route path: 2 Time(s): , Node: 1, Route path: 2 Time(s): , Node: 1, Route path: 2 Time(s): , Node: 1, Route path: 2 三、实验结果分析

仿真过程中路由表变化：2，4-2，5-4-2，3-2，2。当节点[1]在节点[2]的传输范围内时，节点[1]和[2]之间直接通信，不需要中间节点。随着节点[1]的移动，节点[1]离开节点[2]的传输范围并渐渐远离，最后又逐渐靠近。在节点[1]离开节点[2]的传输范围，节点[1]和[2]需要通过中间节点来通信，而且节点[1]离节点[2]越远，需要的中间节点越多。