Maximum Lifetime Data Aggregation (MLDA) in Wireless Sensor Network

Abstract

Wireless sensor network is collection of tiny sensor nodes. Sensor nodes have limited range of sensing,
computational storage and communication resources. We can say Sensor networks are resource-constrained.
Extensive use of computational and communication resources can potentially reduce the battery life of Wireless
sensors. Lifetime of a WSN depends on Lifetime of Sensor nodes. Energy must be conserved for network lifetime
maximization. Data aggregation process can conserve the energy of sensor nodes. Data aggregation process combines
the gathered data of multiple sensors and transmit this combined data to base station. Mainly, Flat routing protocols and
Hierarchical routing protocols supports data aggregation process. LEACH is the most famous Hierarchical clustering
protocol which had been a basis for many further clustering protocols. LEACH protocol is using “No Intelligence” in
data aggregation. In LEACH, whenever it‟s CH‟s turn to send the data to BS then it‟s buffer data will be extracted
and whole buffer data will be sent to BS. Our Modified LEACH is calculating the aggregated value from collection of
Sensed Data and sending aggregated value to BS. The consumed energy to process aggregated data is very less
compared to process bunch of data. As data aggregation logic is reducing the consumption power of sensor node, the
lifetime of sensor node is increased. As lifetime of sensor node is increased, lifetime of sensor network is increased.
Thus, Our Modified LEACH is achieving Maximum Lifetime of sensor network by utilizing Data Aggregation.