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Transient departure process of outgoing packets in a node of a wireless sensor network with energy saving mechanism based on threshold activation of the radio transmitter/receiver is investigated. A finite-buffer queueing system of the GI/M/1-type with N-policy, in which the transmission after each idle period is being initialized only after reaching a threshold of N packets waiting in the buffer,...
This paper introduces the design of a distributed wireless tree-like data acquisition system based on ZigBee, including its composition and the topological structure of ZigBee network. An industrial information transmission system based on ZigBee technology with CC2530 chip is designed. In this paper, every part of the hardware connections and software design will be introduced overall framework of...
In recent years, home ICT services have been actively proposed. To realize the services, power consumption of sensor station increases when a sensor station often wakes up to report sensor data. In this paper, we proposed an application-aware power-saving control method for sensor stations and confirmed an effect of a proposed method which is constructed as OSGi bundle in HGW. By using the proposed...
Establishment of pairwise keys in wireless sensor networks is a fundamental security service, which forms the basis of other security services such as authentication and encryption. However, due to the resource constraints on sensor nodes, establishing pairwise keys in wireless sensor networks is not a trivial task. For the existing key pre-distribution schemes, as the number of compromised nodes...
The objective of Synchronization In wireless sensor network is to synchronize the various sensor nodes which are distributed as well as moving in a network. Synchronization is an important problem in communication networks especially for real time applications. There may be one base station of 1000 sensor nodes moving in the network. Synchronization is considered a particularly difficult in wireless...
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