Efficient Data Collection From Wireless Nodes Under Two-Ring Communication Model
Research on Wireless Sensor Networks (WSNs) has been very active in the last two decades with researchers focusing on issues ranging from deployments with coverage guarantees to the development of energy-efficient communication protocols to improve network lifetime. Consequently, the technology advanced to the level that WSNs are now being routinely used in some environmental applications such as the monitoring of humidity levels to determine vineyard irrigation levels. In fact, commercial products are now available for building such systems. Using mobility to improve ad-hoc networks and WSNs is studied extensively in the literature. In WSNs mobile entities can be used as data mules to collect data from sensor nodes.