An Event Driven approach to Scalable Energy Efficient Clustering Hierarchy in Wireless Sensor Network

Abstract

Wireless Sensor Networks are spatially distributed network of autonomous sensors used for monitoring an
environment. To ensure that in Wireless Sensor Networks, the battery powered Clusters should complete all of its tasks,
Network must minimize its use of communication resources as one of major energy costs in WSN is the energy spent on
communication between nodes and sometimes it is desirable to send data to a gateway node when an event of interest is
occurred at a node [15]. Then sensors will open communication only during a probable event, saving on communication
costs. Interested fields in this type of network include traffic control, health care, surveillance, home automation, disaster
relief, and more. In this paper we propose modification of Scalable Energy Efficient Clustering Hierarchy (SEECH) [9].
The above was designed for sensor networks where they select CHs and relay nodes separately based on the number of
neighbors (degree). Low degree and High degree nodes are employed as relay and cluster head respectively. In this
protocol data was sensed and information of all nodes are gathered periodically and sent to base station after
aggregation by the CHs. In the proposed protocol(ED-SEECH) the event driven approach is used [1] .Data is
transmitted whenever an event is reported. We evaluated the performance of our protocol with MATLAB in two different
network size scenarios and we observed our protocol outperforms the SEECH protocol in terms of energy consumption
and lifetime.