This book focuses on a detailed description WiFi / WLAN with emphasis on PHY and MAC. Following a short view on WiFi fundamentals (architecture, standards, frequency bands), the training course investigates the tasks, and the structure of the different IEEE 802.11 physical layers (1999, a, b, g). A major focus of this WiFi book is put on understanding and comparing the MAC functions used in the various variants of WiFi: 802.11, 11h, and 11e (QoS). Another focus is related to security aspects e.g. ciphering, authentication, association. Both, the service provider’s, as well as the user’s point of view is considered (802.11,11i, and EAP authentication). Whenever applicable, we use real live examples from various sources to provide a realistic view on WiFi issues. After beefy discussing WLAN deployment the book is focusing on new 802.11 standards where 11n is discussed in detail. The aspects of introduction or extension of WiFi into existing communication networks are discussed as well. Finally this book addresses the Vo802.11 aspects and the WiFi certificates. This book course addresses the needs of engineers and technicians who shall be involved with WiFi hotspots and equipment. This book is particularly interesting for engineers already experienced in mobile radio networks.weiterlesen