TY - GEN
T1 - Energy efficiency of cooperative dense wireless sensor networks
AU - Quek, Tony Q.S.
AU - Win, Moe Z.
AU - Dardari, Davide
PY - 2006
Y1 - 2006
N2 - Decentralized detection in a network of wireless sensor nodes involves the fusion of information about a phenomenon of interest (POI) from geographically dispersed sensor nodes. In this paper, we investigate a binary decentralized detection problem in a dense wireless sensor network (WSN). We assume that the strength of the POI varies spatially. We consider a fusion architecture which allows cooperation among the nodes. In order to allow the nodes to cooperate, we propose a consensus flooding protocol and analyze the average energy consumption when cooperation is present. Unlike similar works, we analyze the effect of a realistic sensing model, flooding protocol and network connectivity on the system reliability and energy consumption. We demonstrate that a trade-off exists among spatial diversity gain, average energy consumption, delivery ratio of the flooding protocol, network connectivity, node density, and POI intensity in the cooperative architecture. Consequently, we are able to determine when the additional performance gain provided by cooperation outweighs the increase in average energy consumption required to cooperate.
AB - Decentralized detection in a network of wireless sensor nodes involves the fusion of information about a phenomenon of interest (POI) from geographically dispersed sensor nodes. In this paper, we investigate a binary decentralized detection problem in a dense wireless sensor network (WSN). We assume that the strength of the POI varies spatially. We consider a fusion architecture which allows cooperation among the nodes. In order to allow the nodes to cooperate, we propose a consensus flooding protocol and analyze the average energy consumption when cooperation is present. Unlike similar works, we analyze the effect of a realistic sensing model, flooding protocol and network connectivity on the system reliability and energy consumption. We demonstrate that a trade-off exists among spatial diversity gain, average energy consumption, delivery ratio of the flooding protocol, network connectivity, node density, and POI intensity in the cooperative architecture. Consequently, we are able to determine when the additional performance gain provided by cooperation outweighs the increase in average energy consumption required to cooperate.
UR - http://www.scopus.com/inward/record.url?scp=33847761812&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847761812&partnerID=8YFLogxK
U2 - 10.1145/1143549.1143815
DO - 10.1145/1143549.1143815
M3 - Conference contribution
AN - SCOPUS:33847761812
SN - 1595933069
SN - 9781595933065
T3 - IWCMC 2006 - Proceedings of the 2006 International Wireless Communications and Mobile Computing Conference
SP - 1323
EP - 1330
BT - IWCMC 2006 - Proceedings of the 2006 International Wireless Communications and Mobile Computing Conference
T2 - IWCMC 2006 - 2006 International Wireless Communications and Mobile Computing Conference
Y2 - 3 July 2006 through 6 July 2006
ER -