基于并发预约的水声传感器网络MAC协议

A MAC Protocol for Underwater Acoustic Sensor Network Based on Concurrent Reservation

由于水声信道具有高传播时延特性,基于握手接入机制的MAC协议在水声传感器网络中面临控制包交互失效问题。时隙FAMA协议通过限制发送时间的方法克服控制包失效问题,然而较长的时隙要求会影响网络性能。基于时隙FAMA协议提出了一种改进型协议,该协议通过并发预约机制减少控制包交互占据信道的时间,克服较长时隙对时隙FAMA协议性能的影响。仿真实验结果表明该协议可以有效地提高网络吞吐量。

Due to the high propagation delay of the underwater acoustic channel,the MAC protocol based on the handshake access mechanism faces the problem of control packet interaction failure in the underwater acoustic sensor network.The slotted FAMA protocol overcomes the problem of control packet failure by limiting the transmission time of the node,however,the requirement of a longer time slot affects the network performance.This paper proposes an improved protocol that uses a concurrent reservation mechanism.This mechanism can reduce the time that control packets interact to occupy the channel and overcome the impact of long time slots on the performance of slotted FAMA protocol.Simulation experiment results show that the protocol can effectively improve network throughput.