چکیده (انگلیسی):

Wireless Sensor Networks are networks suitable for data collection
in harsh environments, where it would be difficult or costly the deployment of
wired infrastructure. In spite of these advantages, such networks often rely on
batteries to operate, which may lead to a serious limitation on the networks
lifetime. Bearing this in mind, in this article is proposed and tested a hybrid
polling approach that reduces the number of frames transmitted by the router
node. Thus, the router node lifetime can be extended significantly and hence the
network lifetime. The proposed technique becomes progressively more
advantageous, when compared to classical polling technique, as the number of
network nodes increases. The experimental results obtained using a network
with four nodes indicate a network lifetime increase of about 32.14%.
Importantly, the sensor network lifetime extension increases the economic
viability of the technology and thus makes it more accessible to potential users.