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Towards short-term wireless link quality estimation
Publikationstyp
Conference Paper
Date Issued
2008
Sprache
English
Author(s)
Citation
5th Workshop on Hot Topics in Embedded Networked Sensors, HotEmNets 2008
Contribution to Conference
Publisher
ACM
Commonly, routing in sensor networks is limited to long-term stable links. Unstable links, although often promising to be of large routing progress, are not considered for packet forwarding as link estimators typically cannot handle their dynamics.
In this paper we introduce short-term link estimation to capture link dynamics at a high resolution in time and to identify when these render a link temporarily reliable or unreliable. We identify such dynamics based on packet over-hearing, predict short-term availability and unavailability, and adapt neighbor tables, thereby enlarging the set of links useable by any routing algorithm. Additionally, we show that short-term link estimation integrates seamlessly into today’s sensor network link estimators and routing protocols.
In this paper we introduce short-term link estimation to capture link dynamics at a high resolution in time and to identify when these render a link temporarily reliable or unreliable. We identify such dynamics based on packet over-hearing, predict short-term availability and unavailability, and adapt neighbor tables, thereby enlarging the set of links useable by any routing algorithm. Additionally, we show that short-term link estimation integrates seamlessly into today’s sensor network link estimators and routing protocols.
Subjects
radio dynamics
unstable links
link estimation
DDC Class
600: Technology