Four-Bit Wireless Link Estimation
Rodrigo Fonseca, Omprakash Gnawali, Kyle Jamieson, and Philip Levis
Published in Proceedings of the Sixth Workshop on Hot Topics in Networks (HotNets VI), November 2007.
We consider the problem of estimating link quality in an ad-hoc wireless mesh. We argue that estimating links well requires combining information from the network, link, and physical layers. We propose narrow, protocol-independent interfaces for the layers, which in total provide four bits of information: 1 from the physical layer, 1 from the link layer, and 2 from the network layer. We present a link estimator design with these interfaces that reduces packet delivery costs by up to 44% over current approaches and maintains a 99% delivery ratio over large, multihop testbeds.
Paper (227KB)
BibTeX entry
@inproceedings{hotnets07fonseca, author = "Rodrigo Fonseca and Omprakash Gnawali and Kyle Jamieson and Philip Levis", title = "{Four-Bit Wireless Link Estimation}", booktitle = "{Proceedings of the Sixth Workshop on Hot Topics in Networks (HotNets VI)}", year = {2007}, month = {November} }