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Existing works in wireless sensor networks exploit many theoretical assumptions of transmission links. However, in practical system, these assumptions are more complicated and even could not hold for the unexpected impact from the extraneous factors. In this article, we conduct a comprehensive measurement study in the real application to observe, verify, discover and model the feature of transmission...
Interference plays an important role in the communication of wireless sensor networks. In this paper, we for the first time propose the concept of tolerable interference and investigate the tolerability of interference in multi-channel sensor networks with empirical measurements. We find that the transmission in sensor networks can tolerate certain level interference from the adjacent channels, which...
A critical issue in wireless sensor networks (WSNs) is represented by the network throughput. To meet the throughput requirement, researchers propose multi-channel design in 802.15.4 networks to better utilize the wireless medium and avoid the co-channel interference. However, traditional orthogonal channel design restricts the number of channels and limits the throughput performance. We argue that...
We are interested in event collection in a 2D region where sensors are deployed to detect and collect interested events. Using traditional multi-hop routing in wireless sensor networks to report events to a sink node or base station, will result in severe imbalanced energy consumption of static sensors. In addition, full connectivity among all the static sensors may not be possible in some cases since...
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