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Duty-cycled technology has been introduced as an efficient way to preserve node energy and prolong network lifetime for wireless sensor networks (WSNs). However, many applications with real-time feature require that some message must be sent to the sink node within a limited time. The authors propose a novel data collecting scheme – MTDR which aims to minimise transmission delay in low-duty-cycle...
Flooding a message from the sink has been widely used in wireless sensor networks (WSNs) for many purposes like synchronization, code dissemination etc. However, relatively little work has been done for flooding in low-duty-cycle WSNs with unreliable links. In the paper, we present an energy-efficient flooding algorithm with minimum latency (EFML) in asynchronous low-duty-cycle WSNs, The key idea...
In energy-harvesting wireless sensor networks, sensor nodes equipped with a harvesting device scavenge the valuable energy from ambient environments. In this paper, we consider the routing problem of jointly considering the distance, the remaining energy and energy-harvesting capability of sensor nodes with the objective to route the collected data toward the sink node by going through the high-density...
In the sparse wireless sensor networks, it is difficult to utilize only a few fixed nodes to achieve high-precision target localization due to the limited number of optional nodes. This paper proposes an optimization algorithm of multi-observer trajectories for collaborative bearings-only target localization to minimize the expected filtered RMS position error. The rule of the search scope of the...
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