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The data gathering problem is an important issue in wireless sensor networks (WSNs). In general, mobile elements are used to collect the sensed data of sensors to reduce the problem of unbalanced energy consumption caused by multi-hop transmission. However, in time-sensitive applications of WSNs where mobile elements are used to collect time-sensitive data, we must pay particular attention to the...
In today's scenario wireless networks equipped with sensors have gained a substantial attention and envisioned as a very propitious and befit technology in vast amount of practical applications, that ranging from health and environment monitoring to industrial aspects, hence can be viewed as versatile technology. For these, data collection is a significant aspect in sensor networks. Static data collection...
Mobile sink has been widely used in wireless sensor networks to balance energy consumption among sensor nodes and to prolong the network lifetime. But, as mobile sink moves, sensor nodes have to change their routes to mobile sink frequently, which results in a lot of energy consumption and also a very large transmission delay accordingly. Although using a static sink may lead to shorter network lifetime,...
High energy-efficiency and low transmission delay are most important for periodical data gathering applications in wireless sensor networks (WSNs). Therefore, the product of energy consumption and transmission delay, EnergyxDelay is a good metric for such performance evaluation. This paper presents a distributed energy-efficient and delay-aware data gathering protocol, which is efficient in the ways...
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