Collision Classification MAC Protocol for Underwater Acoustic Communication Networks Using Directional Antennas
Collision Classification MAC Protocol for Underwater Acoustic Communication Networks Using Directional Antennas
复制标题
使用定向天线的水声通信网络的碰撞分类 MAC 协议
DOI：
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复制
发表时间：
2022
影响因子：
4.1
通讯作者：
Zhang Jiarong
中科院分区：
文献类型：
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作者：
Yang Jianmin;Qiao Gang;Hu Qing;Xu Lingji;Xiao Peng;Zhang Jiarong
传统水声通信网络（UACN）普遍采用全向传输技术，导致大量数据包冲突，导致网络吞吐量低、端到端时延高。与全向传输技术相比，定向技术仅在指定方向上发送和接收数据包。这可以显着降低冲突概率并提高网络性能。然而，它也会导致耳聋问题，当发送节点向接收节点发送数据包但接收节点由于其天线波束关闭而无法回复发送者时，就会出现耳聋问题。为了解决这个问题，本研究提出了一种针对 UACN 的冲突分类媒体访问控制（CC-MAC）协议。该协议将水声通道分为两个子通道，节点在两个子通道上传输相应的数据类型。发送节点可以根据接收到的数据包的类型和到达的子信道来估计接收节点当前的状态（即无冲突、正常冲突、耳聋），并选择正确的选项以提高网络效率。最后，我们通过仿真验证了CC-MAC的性能，表明该协议实现了更高的网络吞吐量和更低的端到端延迟。
Traditional underwater acoustic communication networks (UACNs) generally use omnidirectional transmission technology that causes a large number of data-packet collisions, thus resulting in low network throughput and high end-to-end delays. Compared with omnidirectional transmission technology, directional technology only sends and receives data packets in a specified direction. This can significantly reduce the probability of collisions and improve network performance. However, it also causes a deafness problem, which occurs when the sending node sends a data packet to the receiving node but the receiving node is unable to reply to the sender, because its antenna beam is closed. To resolve this issue, this study proposes a collision classification media access control (CC-MAC) protocol for UACNs. With this protocol, the underwater acoustic channel is divided into two subchannels, and the nodes transmit corresponding data types on them. The sending node can estimate the current status of the receiving node (i.e., no collision, normal collision, deafness) according to the type of the data packet received and the sub-channel it arrived on, and it can choose correct options to improve network efficiency. Finally, we verify the performance of CC-MAC via simulations, showing that the protocol achieved higher network throughput and lower end-toend delays.