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DBR: Depth-Based Routing for Underwater Sensor Networks

  • Hai Yan
  • Zhijie Jerry Shi
  • Jun-Hong Cui
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4982)

Abstract

Providing scalable and efficient routing services in underwater sensor networks (UWSNs) is very challenging due to the unique characteristics of UWSNs. Firstly, UWSNs often employ acoustic channels for communications because radio signals do not work well in water. Compared with radio-frequency channels, acoustic channels feature much lower bandwidths and several orders of magnitudes longer propagation delays. Secondly, UWSNs usually have very dynamic topology as sensors move passively with water currents. Some routing protocols have been proposed to address the challenging problem in UWSNs. However, most of them assume that the full-dimensional location information of all sensor nodes in a network is known in prior through a localization process, which is yet another challenging issue to be solved in UWSNs. In this paper, we propose a depth-based routing (DBR) protocol. DBR does not require full-dimensional location information of sensor nodes. Instead, it needs only local depth information, which can be easily obtained with an inexpensive depth sensor that can be equipped in every underwater sensor node. A key advantage of our protocol is that it can handle network dynamics efficiently without the assistance of a localization service. Moreover, our routing protocol can take advantage of a multiple-sink underwater sensor network architecture without introducing extra cost. We conduct extensive simulations. The results show that DBR can achieve very high packet delivery ratios (at least 95%) for dense networks with only small communication cost.

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Copyright information

© IFIP International Federation for Information Processing 2008

Authors and Affiliations

  • Hai Yan
    • 1
  • Zhijie Jerry Shi
    • 1
  • Jun-Hong Cui
    • 1
  1. 1.Department of Computer Science and EngineeringUniversity of ConnecticutStorrs

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