Wi-Fi-6E-Whitepaper-060220-web-通信技术资料.pdf

WHITEPAPER A Guide to Wi-Fi 6E Wi-Fi 6 in the 6 GHz Band © 2020 LitePoint, A Teradyne Company. All rights reserved. Contents 1. Introduction 3 2. Why do we need more spectrum and why the 6 GHz band? 4 Wi-Fi’s Successes 4 Wi-Fi’s Challenges 5 Benefits of Wi-Fi 6E 5 3. Wi-Fi 5, Wi-Fi 6 and Wi-Fi 6E, how do they differ? 6 New Naming Scheme 6 Technology Evolution 6 4. Who are the incumbents in the 6 GHz band? 7 5. What are the rules of operation in the 6 GHz band? 9 Standard Power Access Point 10 Low Power Indoor Access Point 11 Emissions Masks 12 6. How does the IEEE define operations in the 6 GHz band? 14 Rules of Operation 14 HE PHY in the 6 GHz band 14 Scanning and Probing in the 6 GHz band 14 Channelization 15 7. Wi-Fi 6E Challenges 17 The 6 GHz Barrier 17 Consistent Performance across 1200 MHz 17 Dual Band or Tri Band Devices 17 Emissions 17 80 MHz and 160 MHz Channels 17 Higher Order Modulation: 1024-QAM 19 OFDMA 20 8. LitePoint’s Solutions for Wi-Fi 6E 22 IQxel-MW 7G 22 IQfact+ 23 A Guide to Wi-Fi 6E – Wi-Fi 6 in the 6 GHz Band 2 1. Introduction On April 23, 2020 the FCC voted unanimously to make 1,200 megahertz of spectrum available for unlicensed use in the 5.925-7. 125 GHz (6 GHz) band. This historic event was the culmination of several years of work by Wi-Fi advocates underscoring the FCC’s commitment to promote unlicensed standards as the indispensable engine for wireless connectivity for American consumers. The extension of Wi-Fi in the 6 GHz band, named Wi-Fi 6E by the Wi-Fi Alliance [1], has been strongly advocated for by many in the Wi- Fi industry. From chipset and equipment manufacturers to service providers and end users, everyone agrees that m