Tree Based Aggregation Algorithm Design Issues in Wireless Sensor Networks

Ezhumalai, Periyathambi; Kumar, S. Manoj; Arun, Chokkalingam; Sridaharan, D.
November 2009
Wireless Sensor Network;Nov2009, Vol. 1 Issue 4, p306
Academic Journal
Wireless Sensor networks (WSN) consists of tiny sensor nodes which are having limited CPU, memory, battery and communication capabilities. WSN differs from conventional wireless networks in several ways such as sensor nodes have severe energy constraints produces redundant low-rate data traffic, and many-to-one flows. The end-to-end routing schemes that have been proposed in the literature for mobile ad-hoc networks are not appropriate under these constraints. Hence, it is essential to have data-centric technologies that per-form in-network aggregation which gives energy-efficient dissemination. We focus on data aggregation problems in energy constrained sensor networks. The main goal of data aggregation algorithms is to gather and aggregate data in an energy efficient manner so that the network lifetime can be increased. In this paper we present an elaborate survey on different data aggregation algorithms based tree architecture and compare them in terms of lifetime, latency and data accuracy. Also we present the different network issues such as reliability and security while performing aggregation.


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