Ajay Ranjan Mishra received his M. Tech in Microwave Electronics from University of Delhi in 1997. Since then, he has been working with Nokia Networks. He has been involved not only in the research and development of network designing and optimization for all three generations of the networks, but also in the deployment of these networks globally. His current interests are issues related to the design and performance of third, fourth and mixed cellular networks. He has several publications to his credit, including most recently “Fundamentals of Network Planning and Optimization for Wireless Communications: 2G, 3G and systems beyond” by Wiley (2003).