A high-throughput path metric for multi-hop wireless routing
Proceedings of the 9th annual international conference on Mobile computing and networking
Taming the underlying challenges of reliable multihop routing in sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Comparison of routing metrics for static multi-hop wireless networks
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
Temporal properties of low power wireless links: modeling and implications on multi-hop routing
Proceedings of the 6th ACM international symposium on Mobile ad hoc networking and computing
Prediction accuracy of link-quality estimators
EWSN'11 Proceedings of the 8th European conference on Wireless sensor networks
Link quality-based channel selection for resource constrained WSNs
GPC'11 Proceedings of the 6th international conference on Advances in grid and pervasive computing
On the optimal blacklisting threshold for link selection in wireless sensor networks
EWSN'12 Proceedings of the 9th European conference on Wireless Sensor Networks
Performance evaluations of ZigBee in different smart grid environments
Computer Networks: The International Journal of Computer and Telecommunications Networking
Data-driven link quality prediction using link features
ACM Transactions on Sensor Networks (TOSN)
Routing protocol design guidelines for smart grid environments
Computer Networks: The International Journal of Computer and Telecommunications Networking
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The lossy nature of wireless communication leads to many challenges while designing multihop networks. As an integral part of reliable communication in wireless networks, effective link estimation is essential for routing protocols. Recent studies have shown that link reliability-based metrics like ETX have better performance than traditional metrics such as hop count or latency. Usually, such metrics employ techniques like blacklisting, involving thresholds during the link estimation process. In this paper, we conduct a detailed performance analysis of three commonly used link-quality metrics in wireless sensor networks: ETX, 4Bit, and RNP. We study the interplay between these metrics and CTP, a tree-based routing protocol provided by TinyOS. The objectives of our experiment are two fold. First, by applying different link-quality metrics to the same routing protocol, we provide extensive evaluation on ETX, 4Bit and RNP with insights on their performance under different criteria. Second, we study the impact of the presence or absence of a blacklisting policy when using these link quality estimation metrics. As to our knowledge, this paper is the first to compare the performance between these link quality based metrics with networks of different qualities under realistic conditions.