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水声通信网络由于可以弥补传统海洋探测技术的不足,在海洋信息采集、环境监测、灾难预报、辅助导航、水声反潜等民用、军事领域有诸多重要应用.因此,组网技术也成为近年来水声通信领域的研究热点之一.其中数据链路层的媒质控制协议关系到信道资源的有效分配及网络性能.结合能量及网络吞吐量效率因素,本文设计了一种用于分布式远距离多跳水声通信网络的媒质控制协议协议.已有的的新性能的水声调制解调器并没有开发相应的低功耗网络媒质控制协议.有人提出了一类分布式能量有效的竞争媒质控制协议,称为Tone-Lohi(T-Lohi)协议,该协议采用了信道预约机制,共有三个类型:时间同步的T-Lohi协议、保守非时间同步T-Lohi协议及主动非时间同步T-Lohi协议.本文在分析该类协议的基础上讨论了分布式多跳水声通信网络的竞争型媒质控制协议.设计了多跳式的T-Lohi协议,通过采用动态竞争回合、优先权及新的竞争者计数方式等策略,将T-Lohi协议从单跳方式扩展为多跳方式,该协议不需要时间同步.为了充分结合原协议的优点,平衡网络信道利用效率和数据包丢失概率,本文还对竞争回合周期进行了改进.在OPNET仿真平台下对该协议的网络吞吐量性能、丢报率和公平性进行了仿真,验证了所设计协议的有效性.
Since underwater acoustic communication network can make up for the deficiency of traditional marine detection technology, it has many important applications in civil and military fields such as marine information collection, environmental monitoring, disaster prediction, auxiliary navigation, underwater acoustic anti-submarine, etc. Therefore, One of the hot topics in the field of underwater acoustic communication, in which the media control protocol at the data link layer is related to the effective allocation of channel resources and network performance.Based on the energy and network throughput efficiency factors, Media Control Protocol for Multi-Hop Acoustic Communication Networks Existing state-of-the-art underwater acoustic modems do not develop a corresponding low-power network media control protocol. Some proposed a class of distributed energy-efficient competing media control protocols Tone-Lohi (T-Lohi) protocol, which uses a channel reservation mechanism, there are three types: time synchronization T-Lohi protocol, non-time synchronization T-Lohi protocol and active non-time synchronization T-Lohi protocol. Based on the analysis of this kind of protocol, this paper discusses the competitive media control protocol of distributed multi-hop underwater acoustic communication network, and designs multi-hop The T-Lohi protocol extends the T-Lohi protocol from single-hop to multi-hop by using strategies such as dynamic rounds of competition, priority and new competitor counting methods, which do not require time synchronization. In order to fully incorporate the original protocol , This paper also improves the cycle of the round of competition by simulating the network throughput performance, loss reporting rate and fairness of the protocol under the OPNET simulation platform, and verifies The effectiveness of the design agreement.