A high-throughput path metric for multi-hop wireless routing
Proceedings of the 9th annual international conference on Mobile computing and networking
Understanding packet delivery performance in dense wireless sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Taming the underlying challenges of reliable multihop routing in sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
TOSSIM: accurate and scalable simulation of entire TinyOS applications
Proceedings of the 1st international conference on Embedded networked sensor systems
Impact of radio irregularity on wireless sensor networks
Proceedings of the 2nd international conference on Mobile systems, applications, and services
Link-level measurements from an 802.11b mesh network
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
Efficient geographic routing in multihop wireless networks
Proceedings of the 6th ACM international symposium on Mobile ad hoc networking and computing
On accurate measurement of link quality in multi-hop wireless mesh networks
Proceedings of the 12th annual international conference on Mobile computing and networking
Understanding the causes of packet delivery success and failure in dense wireless sensor networks
Proceedings of the 4th international conference on Embedded networked sensor systems
On exploiting asymmetric wireless links via one-way estimation
Proceedings of the 8th ACM international symposium on Mobile ad hoc networking and computing
The emergence of a networking primitive in wireless sensor networks
Communications of the ACM - Web science
Exploiting asymmetric links in a convergecast routing protocol for wireless sensor networks
ADHOC-NOW'12 Proceedings of the 11th international conference on Ad-hoc, Mobile, and Wireless Networks
Asymmetric Geographic Forwarding: Exploiting Link Asymmetry in Location Aware Routing
International Journal of Embedded and Real-Time Communication Systems
Computer Standards & Interfaces
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Asymmetric links commonly exist in low power wireless sensor networks. However, it is difficult to discover and exploit them efficiently. In this work, we propose DEAL, a link management scheme to Discover and Exploit Asymmetric Links efficiently in dense wireless sensor networks. Equipped with a novel feedback mechanism, DEAL dynamically adapts its link maintenance mechanism based on the estimated link quality, and manages the (small) neighbor table so as to retain the most useful information. We implement DEAL in TinyOS and evaluate its performance using both TOSSIM and testbed. The simulation results show that more than 80% of asymmetric links can be discovered and maintained with minimum overhead. Using a collection tree application and ETX as the routing metric, the average path ETX can be reduced by up to 20%. Testbed evaluation also shows that DEAL improves the network routing performance by identifying useful asymmetric links.