基于网络编码技术的水声网络路由协议研究

Research on Routing Protocol of Underwater Acoustic Network Based on Network Coding Technique

针对水声通信传输速率低、时延大的缺点,提出在水声环境下将随机网络编码方法应用于节点之间广播通信,利用NS-2仿真软件对网络编码路由协议NCR（Network Coding Routing）进行仿真,并分别从投递率、投递时延、协议开销和冲突率4个网络性能评价指标进行了分析。发现在节点数量为50的随机网络拓扑结构中,与传统的泛洪（Flooding）方式相比,NCR协议的数据包投递率大约提高了20%~50%,网络时延降低了大约50%~60%,NCR协议改善了水声通信网络传输效率,提高投递率,提高能量利用效率和传输可靠性,时延和数据冲突率有效降低,网络性能获得明显改善。

Duo to some disadvantages of underwater acoustical communication,such as low transmission speed,long delay and etc.,this paper proposes a random network coding technique in underwater acoustical environment,and simulate NCR（ Network Coding Routing） protocol with NS-2. The results show that not only the packet delivery ratio is increased by 20% through 50%,but also the packet delivery average delay is reduced by 50% through 60%. The network performance has been improved.