International Journal of Engineering and Advanced Technology (IJEAT)
In cluster based wireless sensor network common sensor nodes within the cluster sense the event periodically or continuous and transmit the data packets to the respective cluster head. Cluster heads will process the packets and transmit to the sink. As the cluster head act as intermediate node between common sensor nodes and sink so these nodes consumes more energy as compare to other nodes in network. So in this case these nodes are having more chances to dead early and due to that bottleneck problem occur in the network and this leads to affect the reliability of the network.