Networking

Reconfigurable Hardware Based Dynamic Data Aggregation in Wireless Sensor Networks

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Executive Summary

WSNs typically comprise of sensing nodes with limited computational capability and onboard power. The sensed data in a WSN is transmitted from an individual node to a network sink in a multi - hop fashion. Since transmission costs are often several orders of magnitude larger than computational costs, the efficiency of the WSN can be improved by in-network data aggregation techniques. This is, however, problematic because the aggregation to be performed depends on the requirements of the end user / application, and is either unknown at the time of deployment or changes over time. Implementation of fixed aggregation algorithms limits the utility of the net work.

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