This book describes key network elements, software components, and network protocols needed to implement wireless web services successfully, including the concept of user context and its potential to create personalized services. Examined mobile Web functions include location representation and tracking, security schemes, content personalization approaches, privacy mechanisms, and XSLT processing for browser content generation. The author reviews the WAP and i-mode architectures, latest mobile phone features, and describes key aspects of browser mark-up languages (WML, cHTML, and XHTML MP). Ontology concepts to enable the wireless Semantic Web are described and this book puts forward a novel definition and categorization of mobile user context in RDF Schema. An elaborated case-study of a mobile network with code samples in XML and Java is included. The book is intended for wireless Web architects, network managers, and graduate students in electrical engineering and computer science.