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This paper aims to introduce some key parameters for the tracking application in wireless sensor networks. In this paper, the Nearest Closer protocol has been implemented in Jsim simulation platform, and consequently some useful trade-off analysis results among the density, reliability and lifetime have been obtained. Based on these results, two evaluation models are proposed.
The article makes the improvement on the literature[1] which is based on the ID key management according to the wireless sensing network's characteristic. With the ring-tree topology structure's foundation and the LEAP agreement, the article can use the multinomial and the hashing function to make the wireless sensing network's connectivity achieve to 1, and has certain improvement in the security...
According to the characteristics of wireless sensor networks, a novel ranging method is proposed based on measuring propagation time of acoustic signal modulated with pseudo-random number through binary phase shift keying (BPSK) and flying to and fro between two sensor nodes in a wireless sensor network. A node, that launches a ranging process and is called active node, sends modulated acoustic signal...
The boundary node chain of a wireless network with arbitrary deployment, recognized through method based on local generalized convex hull (Igch) or local convex view (lcv), often has gaps, especially where notches or holes exist. The existence of these gaps may cause serious unexpected problems in some wireless network applications. When using Igch to recognize the boundary of a network, a smaller...
The attempts to develop a ubiquitous health care monitoring system arisen from the need of automatic real-time medical services for emergent diseases. Besides, the physiological statuses gathered and maintained by this system are very helpful for diagnosis and early warning. To improve the medical services and diagnosis accuracy, a Wireless Health Advanced Mobile Bio-diagnostic System (abbreviated...
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