… Various cluster-based energy efficient cognitive MAC protocols … changes needed in R-MAC
[7] to support mobility of sensor … the sizes from 50 SU (low density) to 200 SUs (high density). …

… the biggest challenges in Wireless Sensor Networks (WSNs). … considering the matrices like
density of sink, power and etc. … in the network are movable, the optimal route varies for every …

… Wireless sensor network (WSN) is the collection of wireless … , sending data with very small
variation) and farthest nodes … from the BS, node’s residual energy and node density. It uses …

… , sensors are powered by batteries with limited power. Moreover, most areas of WSNs cannot
change batteries at any time, thus the energy efficiency … distribution density of SNs is one of …

… If the density of nodes is uniform throughout the cluster area, … The size of these clusters varies
considerably from the mean … , ‘‘Energy conservation clustering in wireless sensor networks …

… and when c is greater than 0 the size of clusters varies which generates more clusters. Each
… Considering the network density specifications and the distance of communication, the …

… , the energy conservation in the ununiform clustered network … density for maintaining correct
energy usage for every bit transmission. Augmentation of network life is possible by saving …

… in the energy consumption. This probability is specified in terms of the number of nodes in the
network and the distance of each node from its … Our clustering method is based on learning …

… a role change and in order to conserve its energy the Cluster … to other Cluster Heads but
continues its operation of sensing … for different network densities from 150 to 350 sensor nodes …

… are dynamical which changes on the basis of certain rules. In [8] said that as node … ,
message size and node density. The simulation results are carried out for the first packet drop and …