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针对水下无线传感器网络长传播时延、低带宽、时空不确定等特点,提出了一种基于时间规划的媒体接入控制(MAC)协议.该协议主要通过规划时间序列合理安排数据传输时机,以避免数据冲突的发生,并以数据队列的形式传输有效数据,使得在一个握手周期内可以完成多个数据的传输,从而提高了信道的利用率.最后通过NS2仿真实验表明,当网络负载较高时,该协议能较大程度地减少控制包开销,提高网络吞吐量.
Aiming at the characteristics of long time delay, low bandwidth and uncertain time-space of underwater wireless sensor networks, a media access control (MAC) protocol based on time planning is proposed.This protocol mainly arranges the timing of data transmission by planning time series, So as to avoid the occurrence of data collision and transmit valid data in the form of data queue so that the transmission of multiple data can be completed in one handshake cycle and thus the utilization of the channel is improved.Finally through NS2 simulation experiments show that when the network load is more When high, the protocol can reduce control packet overhead to a great extent and improve network throughput.