TY - GEN
T1 - Minimal cost clock synchronization using a sender-receiver protocol in wireless sensornets
AU - Chaudhari, Qasim M.
AU - Serpedin, Erchin
AU - Qaraqe, Khalid
PY - 2008
Y1 - 2008
N2 - Recent years have seen a tremendous growth in the development of small sensing devices capable of data processing and wireless communication through their embedded processors and radios. Wireless Sensor Networks (WSNs) are ad hoc networks consisting of such devices gaining importance due to their emerging applications. In WSNs, there is a need for a common notion of time among the wireless sensor nodes to accomplish major tasks such as data fusion. For the inactive nodes listening to a sender-receiver two-way timing message exchange between two nodes in an exponential link delay model, this paper derives the Maximum Likelihood Estimate (MLE) for the clock offsets of such silent nodes. Since no data transmission is involved on the part of the inactive nodes, this clock synchronization is very attractive for the low power demanding WSN scenario due to reduced power consumption.
AB - Recent years have seen a tremendous growth in the development of small sensing devices capable of data processing and wireless communication through their embedded processors and radios. Wireless Sensor Networks (WSNs) are ad hoc networks consisting of such devices gaining importance due to their emerging applications. In WSNs, there is a need for a common notion of time among the wireless sensor nodes to accomplish major tasks such as data fusion. For the inactive nodes listening to a sender-receiver two-way timing message exchange between two nodes in an exponential link delay model, this paper derives the Maximum Likelihood Estimate (MLE) for the clock offsets of such silent nodes. Since no data transmission is involved on the part of the inactive nodes, this clock synchronization is very attractive for the low power demanding WSN scenario due to reduced power consumption.
KW - Clock synchronization
KW - Maximum Likelihood Estimation
KW - Wireless Sensor Networks
UR - http://www.scopus.com/inward/record.url?scp=60349105356&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:60349105356
SN - 9781565553200
T3 - Proceedings of the 2008 - International Symposium on Performance Evaluation of Computer and Telecommunication Systems, SPECTS 2008
SP - 159
EP - 164
BT - Proceedings of the 2008 International Symposium on Performance Evaluation of Computer and Telecommunication Systems, SPECTS 2008
T2 - 2008 International Symposium on Performance Evaluation of Computer and Telecommunication Systems, SPECTS 2008
Y2 - 16 June 2008 through 18 June 2008
ER -