A synchronous duty-cycled reservation based MAC protocol for underwater wireless sensor networks  

作　　者：Alak Roy Nityananda Sarma 

机构地区：[1]Department of Information Technology,Tripura University,West Tripura,India [2]Department of Computer Science and Engineering,Tezpur University,Assam,India

出　　处：《Digital Communications and Networks》2021年第3期385-398,共14页数字通信与网络（英文版）

摘　　要：To design an energy-efficient Medium Access Control(MAC)protocol for the Underwater Wireless Sensor Networks(UWSNs)is an urgent research issue since depleted batteries cannot be recharged or replaced in the underwater environment.Moreover,the underwater acoustic channels are affected by hindrances such as long propagation delay and limited bandwidth,which appear in the design of the MAC protocol for the UWSNs.The available MAC protocols for the terrestrial wireless sensor networks exhibit low performance in energy efficiency,throughput and reliability in the UWSNs,and cannot be used in the UWSNs directly because of their unique characteristics.This paper proposes a synchronous duty-cycled reservation-based MAC protocol named Ordered Contention MAC(OCMAC)protocol.The basic mechanism of this protocol is to schedule data transmission by transmitters through the scheduling of Ready To Send(RTS)frames.The protocol eliminates the possible collision during data transmission and improves communication efficiency.The paper analyzes the performance in energy efficiency,throughput and reliability of the protocol by modeling the queuing behavior of OCMAC with a Markov Chain process.Furthermore,the analytical model is validated through a simulation study.The analysis results demonstrated that while providing good throughput and reliability,OCMAC can achieve energy saving.

关 键 词：Underwater wireless sensor networks MAC protocol Energy efficiency THROUGHPUT RELIABILITY Acoustic communication OCMAC 

分 类 号：TN929.3[电子电信—通信与信息系统] TP212[电子电信—信息与通信工程]