TY - GEN
T1 - Decomposed raptor codes for data-centric storage in underwater acoustic sensor networks
AU - Cao, Rui
AU - Yang, Liuqing
PY - 2010
Y1 - 2010
N2 - Underwater acoustic sensor networks (UASN) can enable many potential oceanic applications. For the environment monitoring and event detection services, the sensor networks will record a large amount of data. But due to the harsh sea conditions and node energy constraints, real-time data delivery to the ground data center may not be feasible. Thus in-network data storage becomes a possible alternative. To enable efficient and frequent data access services, data-centric storage (DCS) protocols have been proposed for terrestrial sensor networks. However, the adverse underwater environment challenges the DCS protocol in two aspects. First, the unreliable underwater channel requires more robust design of long-distance multi-hop reliable data transport. Secondly, the high node failure rate demands higher reliability of the stored data. On the other hand, fountain codes have been studied for the advantages in data transport and storage. To adapt fountain codes into underwater DCS, we design decomposed Raptor codes (DRC) with threelayer encoding. In addition, a DRC-assisted DCS (DCS-DRC) protocol is proposed for reliable underwater in-network data storage. Analyses and simulations are provided to verify the performance and benefits of the DRC scheme and the DCS-DRC protocol.
AB - Underwater acoustic sensor networks (UASN) can enable many potential oceanic applications. For the environment monitoring and event detection services, the sensor networks will record a large amount of data. But due to the harsh sea conditions and node energy constraints, real-time data delivery to the ground data center may not be feasible. Thus in-network data storage becomes a possible alternative. To enable efficient and frequent data access services, data-centric storage (DCS) protocols have been proposed for terrestrial sensor networks. However, the adverse underwater environment challenges the DCS protocol in two aspects. First, the unreliable underwater channel requires more robust design of long-distance multi-hop reliable data transport. Secondly, the high node failure rate demands higher reliability of the stored data. On the other hand, fountain codes have been studied for the advantages in data transport and storage. To adapt fountain codes into underwater DCS, we design decomposed Raptor codes (DRC) with threelayer encoding. In addition, a DRC-assisted DCS (DCS-DRC) protocol is proposed for reliable underwater in-network data storage. Analyses and simulations are provided to verify the performance and benefits of the DRC scheme and the DCS-DRC protocol.
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U2 - 10.1109/OCEANS.2010.5664386
DO - 10.1109/OCEANS.2010.5664386
M3 - Conference contribution
AN - SCOPUS:78651338025
SN - 9781424443321
T3 - MTS/IEEE Seattle, OCEANS 2010
BT - MTS/IEEE Seattle, OCEANS 2010
T2 - MTS/IEEE Seattle, OCEANS 2010
Y2 - 20 September 2010 through 23 September 2010
ER -