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UA-MAC: An Underwater Acoustic Channel Access Method for Dense Mobile Underwater Sensor Networks

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  • Chao Lv
  • Shuo Wang
  • Min Tan
  • Lan Chen

Abstract

The long propagation delay and low data rate characteristics of acoustic communication attach many challenges to underwater wireless sensor networks. In this paper, a TDMA based underwater acoustic channel access method (UA-MAC) is proposed mainly to improve channel utilization in dense mobile underwater wireless sensor networks (MUWSN). In UA-MAC, the time slot of each node accessing to the acoustic channel is assigned according to a preverified template, which aims to minimize amount of slots so as to decrease the end-to-end delay. In addition, a piggyback based protocol is implemented to synchronize and schedule the network. The simulation results show that UA-MAC is much superior to common TDMA in throughput, channel utilization, and end-to-end delay especially in dense scenario. Based on the low-power low-cost underwater acoustic nodes we developed, the experiments were carried out to validate the proposed UA-MAC.

Suggested Citation

  • Chao Lv & Shuo Wang & Min Tan & Lan Chen, 2014. "UA-MAC: An Underwater Acoustic Channel Access Method for Dense Mobile Underwater Sensor Networks," International Journal of Distributed Sensor Networks, , vol. 10(2), pages 374028-3740, February.
    • Handle: RePEc:sae:intdis:v:10:y:2014:i:2:p:374028
    DOI: 10.1155/2014/374028
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