EEIS: an Energy Efficient at Idle Slots MAC layer Protocol for Wireless Sensor Networks

Abstract

Wireless Sensor Network (WSN) is a new class of distributed Systems. WSN consists of several thousands of tiny devices called sensor nodes, which are distributed autonomously to monitor physical or environmental conditions, such as temperature, sound, vibration, pressure and motion at different locations. Energy plays an important role in WSN because nodes are battery operated and every sensor node has limited battery power. Therefore Medium Access Control (MAC) layer protocol should be energy efficient. The main objective of this paper is to minimize energy of WSN, in low duty cycles [7] using Energy Efficient at Idle Slots Medium Access Control layer Protocol (EEIS). It provides more energy efficiency at Cluster Head (CH) into idle Slots by letting each and every node to stay into sleep mode unless the numbers of packets in its buffer are greater than the packet threshold. It causes packet loss. This problem is solved by sending all remaining data, with the last frame slot in a round. Therefore the energy consumption is decreased and networks life increases by EEIS protocol. The experimentation is done using NS 2.34 simulator and results reveal that, the proposed protocol significantly reduces the energy consumption as compared to the existing LEACH protocol.