基于规则与感知的水声网络MAC协议  

Rule and perception based MAC protocol for UAN

作　　者：李冲 杜秀娟[1,2,3,4] 王丽娟 田晓静 LI Chong;DU Xiujuan;WANG Lijuan;TIAN Xiaojing(College of Computer,Qinghai Normal University,Xining 810008,China;Qinghai Provincial Key Laboratory of IoT,Qinghai Normal University,Xining 810008,China;The State Key Laboratory of Tibetan Intelligent Information Processing and Application,Xining 810008,China;Academy of Plateau Science and Sustainability,Xining 810008,China)

机构地区：[1]青海师范大学计算机学院,青海西宁810008 [2]青海师范大学青海省物联网重点实验室,青海西宁810008 [3]藏语智能信息处理及应用国家重点实验室,青海西宁810008 [4]高原科学与可持续发展研究院,青海西宁810008

出　　处：《通信学报》2022年第2期65-75,共11页Journal on Communications

基　　金：国家自然科学基金资助项目(No.61962052);青海省自然科学创新团队基金资助项目(No.2020-ZJ-903)。

摘　　要：针对水声网络(UAN)媒体访问控制(MAC)协议采用RTS/CTS握手机制,导致信道利用率和网络吞吐量较低的问题,提出一套信道访问规则,基于该规则设计了节点状态感知的水声网络MAC(RP-MAC)协议。当接收节点不在收发状态,并且其他邻居节点也都不在接收状态时,发送节点才会尝试发送一到多个报文给接收节点。节点通过侦听和信道规则来感知邻居节点的状态,在降低冲突与重传的同时,避免了握手控制报文的交互。理论分析与仿真实验表明,与Slotted FAMA和R-MAC等传统水声网络MAC协议比较,RP-MAC协议在不降低包交付率的前提下,实现了水声网络的并发传输,显著提高了信道利用率和网络吞吐量,降低了能量消耗。Aiming at the problem of low channel utilization and network throughput resulted by RTS/CTS handshakes in the conventional media access control(MAC) protocol for underwater acoustic network(UAN), a rule and perception based(RP-MAC) MAC protocol was proposed to avoid packet collision in underwater acoustic networks. Only when the designated receiving node was neither in sending nor receiving state, and other neighboring nodes were not in receiving state, a sending node could send one or more packets to the receiving node, which avoided the interaction of handshake control packets while reducing collision and retransmission. The status of the neighbor nodes was sensed according to the channel rules and the fields from the packets overheard. Theoretical analysis and simulation experiments show that the performance of RP-MAC protocol outperforms the Slotted FAMA and R-MAC protocol in terms of throughput and energy-consumption.

关 键 词：水声网络 MAC协议 网络性能 隐藏终端 暴露终端 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]