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内容説明 As the final 802.11n wireless LAN standard is ratified， thousands of companies are beginning to plan their deployments; many are already moving forward based on the stable Draft 2 standard. However， 802.11n is very different from legacy 802.11a， 802.11b and 802.11g wireless standards， and deployment requires new knowledge and techniques. In this book， leading wireless expert Jim Geier systematically presents all the information and guidance enterprise IT professionals and managers need to deploy 802.11n successfully and achieve maximum performance and business value. Drawing on his extensive experience with real-world 802.11n deployments， Geier covers the entire project lifecycle: planning， design， installation， testing， and support. He offers practical， how-to guidance for deploying in enterprises without existing wireless infrastructure， as well as migrating from legacy 802.11x wireless networks. Part I of this book focuses on the underlying concepts that must be understood before deploying an 802.11n wireless network. Part II focuses on the latest 802.11 standard itself， including current medium access and physical layers， 802.11n functionality， and other current updates， such as 802.11r. Detailed explanations and insider tips on migrating from legacy 802.11a， 802.11b， and 802.11g wireless networks Real world examples and case studies covering the entire project lifecycle， from planning through support Test tool and equipment configuration screenshots that illuminate key concepts and techniques