水声传感器网络MAC协议UW-CSMA/CA的NAV优化  

Research on NAV Optimization of MAC Protocol UW-CSMA/CA in Underwater Acoustic Network

作　　者：李莉 李进 路晨贺 靳晓珂 魏宗博 LI Li;LI Jin;LU Chenhe;JIN Xiaoke;WEI Zongbo(College of Computer Science and Technology,Shenyang University of Chemical Technology,Shenyang 110142,China;Key Laboratory of Intelligent Technology for Chemical Process Industry of Liaoning Province,Shenyang 110142,China)

机构地区：[1]沈阳化工大学计算机科学与技术学院,辽宁沈阳110142 [2]辽宁省化工过程工业智能化技术重点实验室,辽宁沈阳110142

出　　处：《无线电工程》2022年第3期509-514,共6页Radio Engineering

基　　金：辽宁省自然科学基金指导计划(2019-ZD-0075);辽宁省教育厅基础研究项目(LJ2020022);北京信息科技大学北京市传感器重点实验室开放课题(2020CGKF005)。

摘　　要：水声传感器网络UW-CSMA/CA协议依据源节点与目的节点间最大传播延时确定NAV,这将导致发生网络延时冗余问题,从而降低网络吞吐量。基于此协议,提出了一种根据节点实际距离计算NAV的AN-MAC协议。该协议根据节点间的实际传输距离计算出传播延时并存储在控制帧中,将节点间实际传播延时替换最大延时来计算NAV,可以有效减少网络冗余延时。为了提高仿真结果的有效性,在NS-Miracle仿真器中将Bellhop和世界海洋仿真系统WOSS相结合,对2种协议进行仿真和比较。结果表明,AN-MAC协议较UW-CSMA/CA协议在吞吐量和传输延时方面均有改善。The UW-CSMA/CA protocol of underwater acoustic sensor network determines NAV according to the maximum transmission delay between the source node and destination node.This will lead to the problem of network delay redundancy and thus reducing the network throughput.Based on this protocol,AN-MAC protocol is proposed to calculate NAV according to the actual distance between nodes.According to the actual transmission distance between nodes,the propagation delay is calculated and stored in the control frame.The NAV is calculated by replacing the maximum delay with the actual propagation delay between nodes,which can effectively reduce the network redundancy delay.In order to improve the availability of the simulation results,Bellhop and WOSS are combined in NS-Miracle simulator to simulate and compare the two protocols.Compared with UW-CSMA/CA protocol,the throughput and transmission delay of AN-MAC protocol is better.

关 键 词：水声传感器网络协议 握手机制 网络分配向量 网络延时 归一化吞吐量 

分 类 号：TN929.3[电子电信—通信与信息系统]