Optimum Node Deployment Strategy for Heterogeneous Wireless Sensor Network by Estimating Network Lifetime

Heterogeneous wireless sensor networks provide endless opportunities due to their extendable capabilities such as different computing power and sensing range, but at the same time pose formidable challenges, because of the fact that energy is a scarce and usually non-renewable resources. Deployment of sensor nodes in a sensor network is a critical task as deployment should be optimum to increase network lifetime. In this study we have deployed sensor nodes which are heterogeneous on the basis of energy they dissipate while transmitting data. For estimating energy dissipation by nodes we uses a communication model where transmitter dissipates energy to run radio electronics. On the basis of energy dissipation by nodes we can predict optimum and worst case scenario of deployment of sensor nodes. Our experimental results have provided valuable insight into the benefits of heterogeneity.