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Cognitive LF-Ant: a novel protocol for healthcare wireless sensor networks.

Sousa M, Lopes W, Madeiro F, Alencar M - Sensors (Basel) (2012)

Bottom Line: The inter-cluster reporting is aided by the cooperative modulation diversity with spectrum sensing, which can detect new emergency reporting requests and forward them.Simulations results show the decrease of average delay time as the probability of opportunistic access increases, which privileges the emergency reporting related to the patients with higher priority of resources' usage.Furthermore, the packet loss rate is decreased by the use of cooperative modulation diversity with spectrum sensing.

View Article: PubMed Central - PubMed

Affiliation: Institute for Advanced Studies in Communications (Iecom), Federal University of Campina Grande (UFCG), Campina Grande 58429-900, Brazil. marcelo.portela@ee.ufcg.edu.br

ABSTRACT
In this paper, the authors present the Cognitive LF-Ant protocol for emergency reporting in healthcare wireless sensor networks. The protocol is inspired by the natural behaviour of ants and a cognitive component provides the capabilities to dynamically allocate resources, in accordance with the emergency degree of each patient. The intra-cluster emergency reporting is inspired by the different capabilities of leg-manipulated ants. The inter-cluster reporting is aided by the cooperative modulation diversity with spectrum sensing, which can detect new emergency reporting requests and forward them. Simulations results show the decrease of average delay time as the probability of opportunistic access increases, which privileges the emergency reporting related to the patients with higher priority of resources' usage. Furthermore, the packet loss rate is decreased by the use of cooperative modulation diversity with spectrum sensing.

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Packet loss rate for Low ED nodes, as a function of the average SNR.
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f5-sensors-12-10463: Packet loss rate for Low ED nodes, as a function of the average SNR.

Mentions: The results of Packet Loss Rate (PLR) as a function of the average SNR, for the three emergency status considered, are presented in Figures 5–7, over Poa = 0.6 and BSR = 0.4. In each evaluation, there is a comparison between the performance of the transmission with cooperative modulation diversity (if required), and without diversity (Non-CMD). In all the cases, the values of PLR decrease as the average SNR increases, which is an expected behaviour. Moreover, the higher the emergency degree, the lower the packet loss rate. This occurs because the number of packet collisions is reduced by using vacant spectrum bands according to constraints imposed by the block size ratio.


Cognitive LF-Ant: a novel protocol for healthcare wireless sensor networks.

Sousa M, Lopes W, Madeiro F, Alencar M - Sensors (Basel) (2012)

Packet loss rate for Low ED nodes, as a function of the average SNR.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472838&req=5

f5-sensors-12-10463: Packet loss rate for Low ED nodes, as a function of the average SNR.
Mentions: The results of Packet Loss Rate (PLR) as a function of the average SNR, for the three emergency status considered, are presented in Figures 5–7, over Poa = 0.6 and BSR = 0.4. In each evaluation, there is a comparison between the performance of the transmission with cooperative modulation diversity (if required), and without diversity (Non-CMD). In all the cases, the values of PLR decrease as the average SNR increases, which is an expected behaviour. Moreover, the higher the emergency degree, the lower the packet loss rate. This occurs because the number of packet collisions is reduced by using vacant spectrum bands according to constraints imposed by the block size ratio.

Bottom Line: The inter-cluster reporting is aided by the cooperative modulation diversity with spectrum sensing, which can detect new emergency reporting requests and forward them.Simulations results show the decrease of average delay time as the probability of opportunistic access increases, which privileges the emergency reporting related to the patients with higher priority of resources' usage.Furthermore, the packet loss rate is decreased by the use of cooperative modulation diversity with spectrum sensing.

View Article: PubMed Central - PubMed

Affiliation: Institute for Advanced Studies in Communications (Iecom), Federal University of Campina Grande (UFCG), Campina Grande 58429-900, Brazil. marcelo.portela@ee.ufcg.edu.br

ABSTRACT
In this paper, the authors present the Cognitive LF-Ant protocol for emergency reporting in healthcare wireless sensor networks. The protocol is inspired by the natural behaviour of ants and a cognitive component provides the capabilities to dynamically allocate resources, in accordance with the emergency degree of each patient. The intra-cluster emergency reporting is inspired by the different capabilities of leg-manipulated ants. The inter-cluster reporting is aided by the cooperative modulation diversity with spectrum sensing, which can detect new emergency reporting requests and forward them. Simulations results show the decrease of average delay time as the probability of opportunistic access increases, which privileges the emergency reporting related to the patients with higher priority of resources' usage. Furthermore, the packet loss rate is decreased by the use of cooperative modulation diversity with spectrum sensing.

Show MeSH