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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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Average delay time as a function of the block size ratio, over Poa = 0.6. High ED and Critical ED nodes present a similar performance at BSR = 1.
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f4-sensors-12-10463: Average delay time as a function of the block size ratio, over Poa = 0.6. High ED and Critical ED nodes present a similar performance at BSR = 1.

Mentions: Figure 4 shows the performance evaluation related to the average delay time as a function of the block size ratio, by the assumption of Poa = 0.6. The nodes with Low ED and High ED have their performance enhanced as the block size ratio increases. That improvement is more expressive in High ED nodes, because they can continuously use the spectrum opportunities for longer time, as the block size ratio increases. If the same block size is assured to Critical ED and to High ED nodes (block size ratio equals to one), then the performance of those nodes is similar (38 ms and 36 ms, respectively). On the other hand, if the block size ratio is 0, then only Critical ED nodes are allowed to use spectrum opportunities in the primary network, which gives the lowest average delay time to those nodes (3 ms). Despite the improvement in the performance of Low ED nodes, the increase in block size ratio does not cause too much impact (compared to the remaining node's classes) in the performance, i.e., only a variation from 69 ms to 59 ms.


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

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

Average delay time as a function of the block size ratio, over Poa = 0.6. High ED and Critical ED nodes present a similar performance at BSR = 1.
© Copyright Policy
Related In: Results  -  Collection

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

f4-sensors-12-10463: Average delay time as a function of the block size ratio, over Poa = 0.6. High ED and Critical ED nodes present a similar performance at BSR = 1.
Mentions: Figure 4 shows the performance evaluation related to the average delay time as a function of the block size ratio, by the assumption of Poa = 0.6. The nodes with Low ED and High ED have their performance enhanced as the block size ratio increases. That improvement is more expressive in High ED nodes, because they can continuously use the spectrum opportunities for longer time, as the block size ratio increases. If the same block size is assured to Critical ED and to High ED nodes (block size ratio equals to one), then the performance of those nodes is similar (38 ms and 36 ms, respectively). On the other hand, if the block size ratio is 0, then only Critical ED nodes are allowed to use spectrum opportunities in the primary network, which gives the lowest average delay time to those nodes (3 ms). Despite the improvement in the performance of Low ED nodes, the increase in block size ratio does not cause too much impact (compared to the remaining node's classes) in the performance, i.e., only a variation from 69 ms to 59 ms.

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