Performance of Energy Efficient S-MAC Protocol for Wireless Sensor Networks

Wireless Sensor Networks are often battery-powered, and hence extending the networking lifetime is one of the primary concerns in the ubiquitous deployment of wireless sensor networks. This paper introduces energy efficient MAC protocol used for wireless sensor networks. Energy consumption is the main problem in wireless sensor network. So minimize the energy consumption and make the life of sensor nodes. The S-MAC protocol is the solution. S-MAC protocol uses three technologies to minimize energy consumption and support self-configuration. The first, neighbouring nodes are synchronized to go to sleep periodically. Second, the synchronized neighbouring nodes make a virtual cluster to synchronize their wake-up and sleep periods so the control packet overhead is kept low. Third message passing is used to reduce contention latency and control overhead. In present work the cluster heads are formed, cluster heads was fixed and S-MAC protocol was simulated in NS-2 to study the performance in terms of network lifetime, energy consumption, cluster throughput, total power, and packet delivery ratio for cluster head. Keywords— wireless sensor network, S-MAC protocol, energy consumption, periodic sleep scheduling, cluster throughput.