The book "Multiaccess, Mobility and Teletraffic in Wireless Communications: Volume 4" offers a comprehensive analysis of the challenges and developments in the field of wireless communication. It addresses the need for close collaboration between transmission and network professionals, particularly in the context of CDMA techniques, which are increasingly recognized as a solution for future mobile communication systems. In this fourth volume of the series, various aspects crucial for the design of wireless communication networks are covered, including physical and radio access designs, network architecture, as well as resource and mobility management. The contributions included in this volume stem from the MMT'99 workshop, which focused on the theoretical and practical challenges in this area. The authors place particular emphasis on evolutionary trends towards universal wireless access and software radio, as well as performance improvements through spectrally efficient codes and smart antennas.