nology and its subscribers. Both the mobile network operators and ven- dors have felt the importance of efficient networks with equally efficient design. This has resulted in Network Planning and Optimisation related services coming into focus. How- ever, with the technological advances and the simultaneous existence of the 2G/2.5G/3G networks, the impact of services on network efficiency have become even more critical. Many more designing scenarios have developed with not only 2G networks but also with the evolution of 2G to 2.5G or even to 3G networks. Along with this, inter-operability of the networks has to be considered. With scores of books available on radio communications and technology, the real need for the planning engineers remained un-fulfilled. This book fills the gap between mobile technology and mobile networks. Books that are available on system engineering deal with radio planning aspects only. This book covers radio, transmission and core at the same time. Apart from the planning and optimisation aspects for GSM, GPRS, EDGE, WCDMA for all three sections (radio/transmission/core) are also present under the same cover. This will help planning & optimisation engineers to understand not only the technological evolu- tion but also the changes and modifications taking place in the planning and optimisation processes. Due to these reasons, issues related to the network planning and optimisation for each of the generation of networks is dealt with. This book has been divided into four parts. Each of these parts deals with 2G, 2.5G. 3G and 4G networks. There are ten chapters in this book. Part I, Part II and Part III deal with 2G (GSM), 2.5G (GPRS and EDGE) and 3G (WCDMA) networks respectively. All these three parts deal with fundamentals of Radio, Transmission, Core network planning and optimisation. However, Part I and Part III have three chapters, each dealing exclusively with planning and optimisation of these three sections of the PREFACE network. Part II contains two chapters focussing on GPRS and