This work forecasts the changes in mobile communications over the next 20 years to help the reader make informed decisions and develop successful strategies that address the future challenges of this industry. The author offers specific recommendations on which technological areas organizations should concentrate on, along with insightful discussions on technology and the limits of efficiency, standardization, radio spectrum, economics, industry structure, user requirements, and other constraints and drivers. From cellular and fixed wireless systems, to wireless local area and personal area networks, this reference provides an easy-to-understand overview of current and emerging wireless technologies and systems. The book predicts network structure in 2005, 2010, 2015 and 2020, and looks at a day in the life of users in 2010 and 2020. Contributions are included from leading industry experts Mark Birchler, Larry Marturano, Frank Yester, Michel Mouly, Tero Ojanpera, Malcolm Oliphant, Siegmund Redl, Mike Short and the UK Radiocommunications Agency.