Energy conservation and collision avoidance by controlled access protocol in WSN

Energy conservation is one of the major aspects in Wireless Sensor Networks since it impacts the network lifetime. In this paper; we focus on the energy conservation in the MAC protocol which is basically used for the transmitting of data/selecting the channel for transmission. The energy conservation process is carried out by using the controlled access protocol. The paper emphasizes on operation of primary and secondary nodes in the polling mechanism and MACA-BI to carry out transmission in proper manner without any delay factor involved. The lifetime of a node and network of proposed technique is compared with the network using Random Access Protocol by considering the power consumed by each node under various modes.