Wireless technology, like many other technical fields, has its own set of jargon and acronyms. Many times, these acronyms are used simply to reduce the effort required to describe concepts. The goal of this book is to provide meaning for the acronyms and jargon used in the wireless industry with a particular emphasis on commercial systems. Although not exhaustive, an additional goal was to include the most commonly used terms. Individuals who are experts in one particular field, e.g., 3G cellular or WLANs, will find terms from other fields with which they are unfamiliar. Individuals who need to have broad view of the wireless landscape will find that this book covers most of the topics and terms that are important in today's market. This book is a dictionary that reads more like an encyclopedia. Rather than just giving a terse definition for various wireless terms, many of the definitions contain additional information to provide context for understanding the term. A little history is added where appropriate as well as some opinion regarding the technical and marketing issues that make the design of wireless systems so interesting. The book is organized into two sections. The first contains an overview of the book and addresses a couple of topics that are common to many of the definitions, frequency bands and the OSI networking model. The second part of the book contains the definitions in alphabetical order.