MOBILE DATA COLLECTORS IN WIRELESS SENSOR NETWORK – LIFE TIME EXPANSION

Abstract

Sensor networks are characterized by limited energy, processing power, and bandwidth
capabilities. These limitations become particularly critical in the case of event-based sensor networks
where multiple collocated nodes are likely to notify the sink about the same event, at almost the same
time. The propagation of redundant highly correlated data is costly in terms of system performance,
and results in energy depletion, network overloading and congestion. Data aggregation is regarded as
an effective technique to reduce energy consumption and prevent congestion. In this paper, we mainly
focus on improving the lifetime of the network by achieving the reliability using Mobile Data
Collectors .The cluster is formed which consists of few nodes. The cluster head collects the data of all
the nodes in that cluster and it acts as a Data Collector. The Data collector aggregates the data arrives
from all the nodes and forward it to the Base station .By aggregating the data ,the energy spend for
sending the data from the data collector to the base station is minimized which helps in achieving the
reliability. The data collector should select the shortest path to the base station which increases the
reliability. In this proposed system, the movement(Current location) of data collector is analysed using
the improved distribution algorithm and compare it with the analysis done using normal distribution
and centralised algorithm which should result in improvement in the reliability and network lifetime