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A critical aspect of applications in Wireless Sensor Networks (WSNs) is network lifetime. Power-constrained WSNs are usable as long as they can communicate sensed data to a processing node. Poor communication links and hazard environment make the WSNs unreliable. The existing schemes only consider that the state of a sensor covering targets is in binary mode: success (cover the targets) or fail (cannot...
In wireless sensor networks (WSN) data transmission is usually performed by sensors in manner of multi-hop forwarding towards a central static control center (sink). A lot of cheap, low-powered and energy-limited sensors are deployed in the monitored area and some of these nodes closer to the sink node use up their energy more quickly than other nodes because they relay more packets. Although most...
Energy limitation is one of the most important characters in Wireless Sensor Networks (WSNs). Using energy efficiently is significant to prolong sensor network lifetime. The more repeated overlay is, the more energy is wasted. If we divide the nodes into some independent subsets and alternatively awake these subsets, the node energy is consumed slowly. However, the requirement of QoS is opposite to...
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