Geography-informed energy conservation for Ad Hoc routing
Proceedings of the 7th annual international conference on Mobile computing and networking
Range-free localization schemes for large scale sensor networks
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
Impact of radio irregularity on wireless sensor networks
Proceedings of the 2nd international conference on Mobile systems, applications, and services
The platforms enabling wireless sensor networks
Communications of the ACM - Wireless sensor networks
Experimental evaluation of wireless simulation assumptions
MSWiM '04 Proceedings of the 7th ACM international symposium on Modeling, analysis and simulation of wireless and mobile systems
Precise Distributed Localization Algorithms for Wireless Networks
WOWMOM '05 Proceedings of the Sixth IEEE International Symposium on World of Wireless Mobile and Multimedia Networks
Radio propagation patterns in wireless sensor networks: new experimental results
Proceedings of the 2006 international conference on Wireless communications and mobile computing
Models and solutions for radio irregularity in wireless sensor networks
ACM Transactions on Sensor Networks (TOSN)
On credibility of simulation studies of telecommunication networks
IEEE Communications Magazine
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A key design issue in wireless networks is represented by the irregular and dynamic radio coverage at each node. This is especially true for wireless sensor networks, which usually employ low quality radio modules to reduce the cost. It results in irregularity in radio coverage and variations in packet reception in different directions. Due to its likely impact on the upper layer protocols, many services, such as localization, routing and others, needs to be resilient to the irregular and dynamic radio propagation, and to include mechanisms to deal with these problems. As such, accurate models of radio propagation patterns are important for protocol design and evaluation. In this paper, measurements of radio propagation patterns have been carried out using the motes themselves. With empirical data obtained from the Mica2 platforms we were able to observe and further quantify such phenomena. The results demonstrate that the radio pattern is largely random; however, radio signal attenuation varies along different direction, and more importantly, is time-varying while stationary.