Distance-Vector-Based Opportunistic Routing for Underwater Acoustic Sensor Networks
Distance-Vector-Based Opportunistic Routing for Underwater Acoustic Sensor Networks
复制标题
水声传感器网络中基于距离矢量的机会路由
DOI：
10.1109/jiot.2019.2891910
复制
发表时间：
2019-04-01
影响因子：
10.6
通讯作者：
Chen, Weiqi
中科院分区：
文献类型：
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作者：
Guan, Quansheng;Ji, Fei;Chen, Weiqi
随着水下物联网的发展，水声传感器网络（UASN）已被认为是海洋工程中勘探和开发海洋资源的一种有前途的技术。由于时间可变性、频率选择性和非常有限的可用带宽，水声（UWA）信道通常被认为是当今使用中最具挑战性的通信媒体之一。UWA链路的高度动态性要求为uasn提供自适应、可扩展和高效的路由方案。深度路由由于不需要传感器的全维位置信息就能高效地工作而备受关注。但存在空洞区和绕行转发等问题。为此，本文提出了一种基于距离矢量的机会路由（DVOR）方案来解决这些问题。DVOR使用一种查询机制来建立UWA节点的距离向量，它记录了到汇聚点的最小跳数。在此基础上，提出了一种基于距离向量的机会路由方法来协调分组转发。DVOR在机会转发中信令开销低，并且能够避免空白区和绕路长的问题。仿真结果表明，DVOR在分组传送率、能效和端到端平均时延等方面都优于现有的路由协议。
With the advance of the Internet of Underwater Things, underwater acoustic sensor network (UASN) has been considered as a promising technology for oceanic engineering to explore and exploit marine resources. Due to the time variability, frequency selectivity, and the very limited available bandwidth, underwater acoustic (UWA) channels are generally known as one of the most challenging communication media in use today. The highly dynamic nature of UWA links calls for adaptive, scalable, and efficient routing schemes for UASNs. Depth-based routing has attracted much attention because it can work efficiently without the need for full-dimensional location information of sensors. However, it suffers from the problems of void region and detouring forwarding. To this end, this paper proposes a distance-vector-based opportunistic routing (DVOR) scheme to address these problems. DVOR uses a query mechanism to establish the distance vectors for UWA nodes, which record the smallest hop counts toward the sink. Then, an opportunistic routing is developed to coordinate the packet forwarding based on the distance vectors. DVOR has a low signaling overhead in opportunistic forwarding, as well as the ability to avoid the problems of void region and long detour. Simulation results show that DVOR outperforms the existing routing protocols in terms of packet delivery ratio, energy-efficiency, and average end-to-end delay.