Power-Aware Localized Routing in Wireless Networks
IEEE Transactions on Parallel and Distributed Systems
Directed diffusion for wireless sensor networking
IEEE/ACM Transactions on Networking (TON)
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
Impact of radio irregularity on wireless sensor networks
Proceedings of the 2nd international conference on Mobile systems, applications, and services
Maximum lifetime routing in wireless sensor networks
IEEE/ACM Transactions on Networking (TON)
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
ATPC: adaptive transmission power control for wireless sensor networks
Proceedings of the 4th international conference on Embedded networked sensor systems
Random waypoint mobility model in cellular networks
Wireless Networks
Asymmetry-aware link layer services in wireless sensor networks
Journal of Embedded Computing - Design and Optimization for High Performance Embedded Systems
On link asymmetry and one-way estimation in wireless sensor networks
ACM Transactions on Sensor Networks (TOSN)
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The quality of the communication links in a Wireless Sensor Network often shows significant asymmetry and variation over time, due to, for example, heterogeneous settings of the transmission power, moving nodes or changing external interference. This makes it difficult for nodes to accurately maintain system-level properties, such as the minimum-energy path from the node to a given reference node, as required by many protocols. In this paper, we introduce a distributed service that allows nodes to maintain accurate information related to the minimum-cost path, such as its cost or parent on that path. Using controlled n-hop forwarding, to deal with asymmetric links, every node disseminates minimum-cost path and connectivity information allowing every connected node in the network to iteratively derive minimum-cost path information. This controlled n-hop forwarding is repeated to avoid stale information due to dynamic changes in link qualities. The parameters of the service allow a trade-off between the accuracy and overhead. We study the characteristics of a deployment that impact this trade-off and how the service should be parameterized accordingly. Extensive simulations and experiments for an actual deployment show a significant increase in the accuracy of the maintained minimum-cost path information, compared to the typically used local broadcasting approach.