TY - GEN
T1 - Achieving stable network performance for wireless sensor networks
AU - Lin, Shan
AU - Zhou, Gang
AU - Wu, Yafeng
AU - Whitehouse, Kamin
AU - Stankovic, John A.
AU - He, Tian
PY - 2008
Y1 - 2008
N2 - Extensive empirical results reveal that interference can cause link qualities to change quickly and dramatically. For such highly dynamic links, the short term link quality estimations widely used in existing protocols require frequent measurements and may not be accurate. As a result, when these links are selected, end-to-end communication quality varies significantly. Also, route changes occur frequently, introducing traffic oscillation and excessive overhead in network protocols. To achieve good and stable network performance, it is not enough to use short term link estimation. It is essential to characterize a link's capacity to perform well at a desired level in the presence of interference and environmental changes. Therefore, we propose a performance metric called competence. We have incorporated the competence metric into routing algorithm designs. We have also designed and implemented a maintenance framework that stabilizes performance at both link and network layers. This framework allocates the desired performance level among multiple links along an active route by using an end-to-end feedback loop, and enforces the performance level of each link through adaptive transmission power control and retransmission control. In real system evaluations with 48 TMotes, our solution outperforms previous protocols significantly and achieves end-to-end stable performance for more than 99% of the time over 24 hours.
AB - Extensive empirical results reveal that interference can cause link qualities to change quickly and dramatically. For such highly dynamic links, the short term link quality estimations widely used in existing protocols require frequent measurements and may not be accurate. As a result, when these links are selected, end-to-end communication quality varies significantly. Also, route changes occur frequently, introducing traffic oscillation and excessive overhead in network protocols. To achieve good and stable network performance, it is not enough to use short term link estimation. It is essential to characterize a link's capacity to perform well at a desired level in the presence of interference and environmental changes. Therefore, we propose a performance metric called competence. We have incorporated the competence metric into routing algorithm designs. We have also designed and implemented a maintenance framework that stabilizes performance at both link and network layers. This framework allocates the desired performance level among multiple links along an active route by using an end-to-end feedback loop, and enforces the performance level of each link through adaptive transmission power control and retransmission control. In real system evaluations with 48 TMotes, our solution outperforms previous protocols significantly and achieves end-to-end stable performance for more than 99% of the time over 24 hours.
KW - feedback control
KW - interference
KW - stable performance
KW - wireless sensor network
UR - http://www.scopus.com/inward/record.url?scp=78751563326&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78751563326&partnerID=8YFLogxK
U2 - 10.1145/1460412.1460499
DO - 10.1145/1460412.1460499
M3 - Conference contribution
AN - SCOPUS:78751563326
SN - 9781595939906
T3 - SenSys'08 - Proceedings of the 6th ACM Conference on Embedded Networked Sensor Systems
SP - 453
EP - 454
BT - SenSys'08 - Proceedings of the 6th ACM Conference on Embedded Networked Sensor Systems
T2 - 6th ACM Conference on Embedded Networked Sensor Systems, SenSys 2008
Y2 - 5 November 2008 through 7 November 2008
ER -