SOUNET: Self-Organized Underwater Wireless Sensor Network

Abstract

In this paper, we propose an underwater wireless sensor network (UWSN) named SOUNET where sensor nodes form and maintain a tree-topological network for data gathering in a self-organized manner. After network topology discovery via packet flooding, the sensor nodes consistently update their parent node to ensure the best connectivity by referring to the time-varying neighbor tables. Such a persistent and self-adaptive method leads to high network connectivity without any centralized control, even when sensor nodes are added or unexpectedly lost. Furthermore, malfunctions that frequently happen in self-organized networks such as node isolation and closed loop are resolved in a simple way. Simulation results show that SOUNET outperforms other conventional schemes in terms of network connectivity, packet delivery ratio (PDR), and energy consumption throughout the network. In addition, we performed an experiment at the Gyeongcheon Lake in Korea using commercial underwater modems to verify that SOUNET works well in a real environment.

Cross Deployment Networking and Systematic Performance Analysis of Underwater Wireless Sensor Networks

“…In conclusion, our approach proves that CBCL and CDNM are better than NBCL, and at the same time, compared to some previous works ([ 19 ] (2011), [ 20 ] (2013), [ 21 ] (2014), [ 22 ] (2015), [ 26 ] (2016) and [ 27 ] (2017)), the SQPCM can be employed to evaluate the systematic performance of a network on coverage, connectivity durability and rapid-reactivity, as shown in Table 4 .…”

Robot Delay-Tolerant Sensor Network for Overhead Transmission Line Monitoring

“…Massachusetts Institute of Technology (MIT) has daknet [21], where buses or public service vehicles are used as DMC to provide Internet services in remote rural areas. In underwater wireless sensor network (UWSN), an autonomous underwater vehicle (AUV) is also used as a mobile node for message transmitting [22,23]. This research also developed a DTSN mobile node, the Inspection Robot [6,7] for constructing the grid monitoring system in remote areas.…”

UCMAC: A Cooperative MAC Protocol for Underwater Wireless Sensor Networks

“…We assume that all nodes, which are equivalent in terms of capability and physical specification, are fixed on the seabed without timing synchronization and that they acquire propagation delay information from/to one-hop-distance neighbors through network initialization [ 35 ]. In addition, the nodes configure a distributed and partially connected mesh topology where they are connected to their one-hop distance neighbors.…”