Anh Phan Speer

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Data sensing and retrieval in wireless sensor systems have a widespread application in areas such as security and surveillance monitoring, and command and control in battlefields. In query-based wireless sensor systems, a user would issue a query and expect a response to be returned within the deadline. While the use of fault tolerance mechanisms through(More)
In query-based wireless sensor networks (WSNs), the system must perform data sensing and retrieval and possibly aggregate data as a response at runtime. Since a WSN is often deployed unattended in areas where replacements of failed sensors are difficult, energy conservation is of primary concern. While the use of redundancy is desirable in terms of(More)
Data sensing and retrieval in wireless sensor systems have a widespread application in areas such as security and surveillance monitoring, as well as command and control in battlefield situations. In query-based sensor systems, a user would issue a query with quality of service (QoS) requirements in terms of reliability and timeliness, and expect a response(More)
The sensors in the WSN sense the adjacent, collects the data and deliveries the data to the sink node. It has been noticed that the sensor nodes are deactivated or damaged when obvious to committed radiations or due to energy problems. This damage leads to the transient parting of the nodes from the network which procure in the building of the holes. These(More)
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