Mobile and wireless networks have experienced an explosive growth during the last few years. Their impact ranges from medical, to military, to industrial, and to societal. In fact, mobile and wireless networking is gradually emerging as a discipline. The primary focus of this book is the rapidly evolving design methodologies and analytical models of wireless networks. The design, development, and analysis of wireless networks that can effectively be used in many applications remain challenging research problems due to the complexity involved. However, recent advances in wireless technology have addressed successfully many of the obstacles hindering the wide deployment of wireless networks. How to develop more efficient and reliable wireless networks and effectively model them using analytical models or simulation models remains a hot research area. The goal of the book is to serve as a reference for current design methodology and analytical models that can be used to design and analyse various wireless network systems. Important developments, new strategies, and promising analytical models for design of efficient and reliable wireless networks are presented. Important features and limitations of methods and models are identified. Consequently, this book can serve as a useful reference for researchers, educators, graduate students, and practitioners in the field of wireless networks. This book contains 14 invited chapters from prominent researchers working in this area around the world. The book is basically divided into three main parts. The authors believe all of these chapters not only provide novel ideas, new analytical models, simulation and experimental results and handful experience in this field, but also stimulate the future research activities in the area of design and analysis of wireless networks.