Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Understanding packet delivery performance in dense wireless sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Statistical model of lossy links in wireless sensor networks
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
Telos: enabling ultra-low power wireless research
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
Effects of Correlated Shadowing: Connectivity, Localization, and RF Tomography
IPSN '08 Proceedings of the 7th international conference on Information processing in sensor networks
Efficient data collection from wireless nodes under the two-ring communication model
International Journal of Robotics Research
Radio diversity for reliable communication in sensor networks
ACM Transactions on Sensor Networks (TOSN)
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Packet loss and energy consumption in sensor networks depend critically on the quality of the network's wireless links. In turn, link quality depends on the environment in which the RF signals propagate and the locations of the link's endpoints. Experimental results have shown that a low-power wireless link can be in one of three states or ‘regions’, as the inter-node distance increases: connected, transitional (gray), and disconnected. The gray region is characterized by extreme variability, whereby small differences in distance or end-point locations can lead to pronounced differences in loss rates. However, not all is lost. This work investigates the spatial characteristics of the gray region and experimentally shows that one can efficiently identify links with low loss rates within the radio's gray region. One of the possible applications of this finding is in the design of sparse, yet low-loss network deployments.