TY - GEN
T1 - Coalition-aided data transport in wireless sensor networks
T2 - 2006 IEEE Radio and Wireless Symposium
AU - Qinghai, Gao
AU - Zhang, Junshan
AU - Larish, Bryan
AU - Shen, Sherman
PY - 2006/12/1
Y1 - 2006/12/1
N2 - Consider cluster-based wireless sensor networks where sensor nodes are organized into groups to form coalitions for data aggregation and transport. We assume that each coalition head (CH) collects data from the sensors within the coalition and carries out data compression. Then, the data are transported from the coalitions to the sink. We assume that CSMA based random access is used by the CHs to reserve the channel. We examine three data transmission schemes. In Scheme 1, a node in each coalition is selected randomly by the CH to transmit the data. In Scheme 2, the node with the best channel condition in each coalition transmits the data, exploiting multiuser diversity gain. In Scheme 3, all the nodes within a coalition transmit in a cooperative manner, so the cooperative diversity gain could he achieved. We analyze the delay performance and energy consumption corresponding to the above three schemes. Finally, we investigate the optimal coalition size in the sense of maximizing the energy efficiency. Numerical examples are provided to illustrate the performance.
AB - Consider cluster-based wireless sensor networks where sensor nodes are organized into groups to form coalitions for data aggregation and transport. We assume that each coalition head (CH) collects data from the sensors within the coalition and carries out data compression. Then, the data are transported from the coalitions to the sink. We assume that CSMA based random access is used by the CHs to reserve the channel. We examine three data transmission schemes. In Scheme 1, a node in each coalition is selected randomly by the CH to transmit the data. In Scheme 2, the node with the best channel condition in each coalition transmits the data, exploiting multiuser diversity gain. In Scheme 3, all the nodes within a coalition transmit in a cooperative manner, so the cooperative diversity gain could he achieved. We analyze the delay performance and energy consumption corresponding to the above three schemes. Finally, we investigate the optimal coalition size in the sense of maximizing the energy efficiency. Numerical examples are provided to illustrate the performance.
KW - Coalition
KW - Energy efficiency
KW - Wireless sensor networks
UR - http://www.scopus.com/inward/record.url?scp=33846384660&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33846384660&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33846384660
SN - 0780394127
SN - 9780780394124
T3 - Proceedings - 2006 IEEE Radio and Wireless Symposium
SP - 83
EP - 86
BT - Proceedings - 2006 IEEE Radio and Wireless Symposium
Y2 - 17 January 2006 through 19 January 2006
ER -