Energy and Cost Efficient Time Synchronization Using a Mobile Agent for Wireless Sensor Network

Over the past few years, Wireless Sensor Network is one of the emerging technology which is used in many distributed communication network for variety of powerful application such as environmental monitoring, traffic management, agriculture and defence etc. The basic communication in Wireless Sensor Network (WSN) greatly depends on the time synchronization of the sensor nodes in the Network. Clock synchronization is one of the basic services provided by WSN’s that aims at providing a common time scale for local clocks of nodes in the network. Nodes in sensor network have its own local clock which is difficult to time synchronize between due to some internal or external effects. Each sensor nodes have limited processing power and memory which affect the lifespan of it which in turn affect the whole network. Many synchronization protocols have been proposed for synchronizing the WSN. These protocols have their own advantages as well as disadvantages according to the way of deployment of the sensor nodes in the WSN. Clock synchronization has paid a great magnitude of attention in Wireless Sensor Network. The main aim of this paper is to synchronize the wireless sensor network using a powerful mobile agent, thereby saving the energy of the sensor nodes. This helps to increase the lifespan of the sensor nodes. Simulation results show that our proposed scheme is more energy efficient and cost effective.