وای‌فای ۷ در عمق: راهنمای شما برای تسلط بر وای‌فای ۷، پروتکل ۸۰۲.۱۱be و استقرار آنها (فناوری شبکه)

Cover Page About This eBook Halftitle Page Title Page Copyright Page Dedication Page Contents at a Glance Contents Foreword Preface Audience and Background Structure Acknowledgments About the Authors Chapter 1. Wi-Fi Fundamentals Evolution of 802.11 Standards The 802.11 Architecture The 802.11 Connection Process Channel Access Rules Summary Chapter 2. Reaching the Limits of Traditional Wi-Fi The Burden of Roaming A Limited QoS Scheme Coexistence Challenges 802.11 Security Summary Chapter 3. Building on the Wi-Fi 6 Revolution Channel Efficiency Improvements Functional Improvements Wi-Fi in the 6 GHz Band Summary Chapter 4. The Main Ideas in 802.11be and Wi-Fi 7 Pressure from the Market and Previous Generations’ Limitations Wi-Fi 7 Expected Challenges Summary Chapter 5. EHT Physical Layer Enhancements Wi-Fi7 in a Nutshell Purposes and Opportunities for the Physical Layer PPDU Formats and Their Fields Construction of the Data Field Major Wi-Fi7 PHY Innovations Minor Wi-Fi 7 PHY Innovations PHY Capability Signaling Summary Chapter 6. EHT MAC Enhancements for Multi-Link Operation MLO Architecture MLD Discovery and Association MLD Data Plane MLO Modes ML Reconfiguration Link Management Other MLO Enhancements Summary Chapter 7. EHT MAC Operation and Key Features EHT BSS Operation Enhanced SCS Restricted TWT Triggered TXOP Sharing EPCS Priority Access Wi-Fi 7 Security Summary Chapter 8. Wi-Fi 7 Network Planning WLAN Design Principles Designing for Wi-Fi 7 Summary Chapter 9. Future Directions Wi-Fi 8 Directions Localization and Sensing A Privacy-Respecting 802.11 Summary Index An essential guide for networking professionals responsible for implementing Wi-Fi 7 Join wireless networking experts Jerome Henry, Brian Hart, Binita Gupta, and Malcolm Smith on this deep dive into Wi-Fi 7 and 802.11be. The authors explore how to design and optimize your network to fully leverage Wi-Fi 7's new capabilities. You will learn in detail the inner workings of Wi-Fi 7 improvements like rTWT, puncturing, triggered uplink access, and SCS QC. You will explore the new possibilities of multi-link operations and learn why clients will come in five possible MLO modes that dramatically change the expectations you can have for their performances. You’ll gain practical, real-world insights into protocol implementation and its effects on cell design, roaming efficiency, and overall network performance. This book is an invaluable resource for anyone who designs, manages, and optimizes wireless networks or works with 802.11, from network architects and wireless network administrators to network engineers and anyone whose job includes the need to face the Wi-Fi 7 wave or understand 802.11be and its challenges in depth. Whether you are new to IEEE 802.11 standards or looking to deepen your understanding of the latest wireless networking advancements, this book gives you the knowledge and expertise to stay ahead in the evolving Wi-Fi technology landscape. Includes a foreword by Matt MacPherson (CTO of Wireless, Cisco Systems) In this book, you will: Understand the foundational concepts of Wi-Fi and the 802.11be protocol Explore the challenges and balance of backward compatibility in Wi-Fi 7 development Learn about the enhancements introduced in Wi-Fi 6 and Wi-Fi 6E and their impact on 802.11be Explore the enhancements in transmission and reception techniques, channel structure and multi-user access management Learn about Multi-Link Operation (MLO) and its five different modes Understand Quality of Service (QoS) mechanisms and priority scheduling Examine site survey and network planning considerations specific to Wi-Fi 7 deployments