%0 Journal Article %A Shehzad Ashraf Ch. and Aftab Ahmed Khan and Zahid Mehmood and Muhammad Ahsan Habib and Qasim Mehmood %D 2010 %J International Journal of Electronics and Communication Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 44, 2010 %T Efficient Time Synchronization in Wireless Sensor Networks %U https://publications.waset.org/pdf/15817 %V 44 %X Energy efficiency is the key requirement in wireless sensor network as sensors are small, cheap and are deployed in very large number in a large geographical area, so there is no question of replacing the batteries of the sensors once deployed. Different ways can be used for efficient energy transmission including Multi-Hop algorithms, collaborative communication, cooperativecommunication, Beam- forming, routing algorithm, phase, frequency and time synchronization. The paper reviews the need for time synchronization and proposed a BFS based synchronization algorithm to achieve energy efficiency. The efficiency of our protocol has been tested and verified by simulation %P 1313 - 1316