水下磁感应通信作为一种新型的水下通信方式,通过无线磁通信中继级联可以构成水下链式网络.本文提出了一种基于磁感应通信的水下链式网络MAC协议-LM-MAC(Level and Magnetic based Medium Access Control Protocol),依据拓扑位置生成每个节点的不同等级值,每个节点根据等级控制数据转发规则.每个节点设置了接收、发送、监听和睡眠四种状态机,根据工作条件不同进行状态转换.最后,本文采用OPNET仿真平台进行仿真实验,建了单链网络和双链网络拓扑,在通信距离与网络结构相同的情况下与IEEE802.11MAC进行了横向对比,仿真结果表明了 LM-MAC协议可以减少网络通信负荷,在传输延时、数据包成功投递率等方面有10％左右的优化,因此能够较好地适用于水下磁感应通信网络环境.
LM-MAC Protocol of Underwater Chain Network Based on Magnetic Induction Communication
As a new underwater communication mode,magnetic induction communication can form an underwater chain network through wireless magnetic communication relay cascade.This paper proposes an underwater chained network MAC protocol,i.e.,LM-MAC,based on lever and magnetic induction communication,which generates different level values for each node according to the topology location,where each node controls the data forwarding rules according to the level value and Each node is set with four state machines:receiving,sending,listening and sleeping,and the state transition is following to different working conditions.It also Finally,this paper uses OPNET platform to carry out simulation experiments,builds single-link network and dual-link network topology,and makes horizontal comparison with IEEE802.11MAC under the condition that the communication distance and network structure are the same.Simulation results show that LM-MAC protocol can reduce the network communication load and optimize about 10％in terms of transmission delay and successful delivery rate of packets and other aspects.So it can be better applied to the underwater magnetic induction communication networks.
Magnetic induction communicationUnderwater chain networkLM-MAC protocolOPNET
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