This book includes new and noteworthy advanced research on the following topics: personal portable telephones, multimedia devices, digital assistants, and communicating palmtop computers; Registration and handoff protocols, messaging, and communications and computing requirements; Network control and management for protocols associated with routing and tracking of mobile users; Location-independent numbering plans for movable personal services; Personal profiles, personalised traffic filtering, and other database-driven aspects of personal communications; Link access technologies and protocols; Radio and infrared channel characterisation and other microcell-based personal communication systems; Satellite Systems and Global Personal Communications; Traffic management and performance issues; Policy issues in spectrum allocation, industry structure, and technology evolution; Applications, case studies, and field experience; Intelligent vehicle highway systems.