<strong>Paper Title</strong><br>
Energy Efficiency Improvement Methods In Wireless Sensor Network<br>
<br>

<strong>Abstract</strong><br>
Wireless sensor network has been an active  area of research. It provides quick, uninterrupted access to 
information, making the required data readily available to user. The nodes in wireless sensor network are battery powered 
and these batteries being irreplaceable, energy efficiency becomes an important issue. Many techniques have been proposed 
to increase the energy efficiency, thereby increasing the network lifetime in wireless sensor networks. This paper provides an 
overview of various  energy-efficiency improvement techniques used in wireless  sensor networks, thus, it also improves 
network lifetime.  
 
Keywords- Wireless Sensor Networks, Energy Efficiency, Heterogeneous Nodes