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Because of the limited energies of sensors, efficient data gathering in wireless sensor network has been received a great deal of attention recently. To prolong the network lifetime, in this paper, we study the problem of scheduling a mobile sink to some specific nodes, termed anchor nodes in this paper, for data collection and reducing the energy consumption of data transmission. While considering...
A proposed Internet of Things system architecture offers a solution to the broad array of challenges researchers face in terms of general system security, network security, and application security.
Recently, many researchers address on the problem of reducing power consumption for data aggregation in wireless sensor networks. However, many existing event-to-sink routing schemes for data aggregation require assistance from a global positioning system (GPS), which is not always available. In this paper, we propose a GPS-free event-to-sink routing scheme for data aggregation in wireless sensor...
In the tracking system, a better prediction model can significantly reduce power consumption in a wireless sensor network because fewer redundant sensors will be activated to keep monitoring the object. The Gauss-Markov mobility model is one of the best mobility models to describe object trajectory because it can capture the correlation of object velocity in time. Traditionally, the Gauss-Markov parameters...
Wireless sensor networks are often used to monitor and report the locations of moving objects. In light of storage in sensors, the wireless sensor network can be viewed as a distributed database for storing and retrieving the location information of objects. Many methods for the construction of the message-pruning trees have been studied to reduce the cost of updating databases and querying objects...
A wireless sensor network has unidirectional links because sensors can have different transmission ranges, sensors have unstable transmission ranges, and a hidden terminal problem exists. In this paper, we introduce a virtual coordinate assignment protocol (ABVCap_Uni) to assign virtual coordinates to nodes that have no geographic information in wireless sensor networks with unidirectional links,...
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