RichardBennett：2024年Wi-Fi发展历史给我们的启示（英文版）（22页）.pdf

1、Richard BennettOCTOBER 2024LESSONS FROM THE HISTORY OF Wi-Fi Introduction On April 3,1973,Marty Cooper made the worlds first public cellphone call outside the Midtown Hilton in New York.After this dramatic beginning he called a rival to declare victory the cellular network became the predominant for

2、m of worldwide electronic communication.While the wired telecom network supported 11 million subscribers after its first 110 years of operation,1 cellular went from zero to nine billion in 40 years.2 While cellular was taking off,regulators created a novel unlicensed spectrum regime,3 chiefly suited

3、 for limited-distance networks such as Wi-Fi,4 Bluetooth,and small IoT networks Zigbee and Z-Wave.5 Wi-Fi alone connects to nearly 20 billion devices6 in the homes and offices of the worlds 1.4 billion fixed broadband subscribers.7 Unlike the mobile networks that descended from Coopers first call,Wi

4、-Fi is quite limited in terms of coverage,capability,mobility,and security,even for public Wi-Fi applications.Wireless networks chiefly depend on radio frequency(RF)spectrum;hence,the demand for this resource has increased as the numbers of users and devices have grown.The regulatory response to spe

5、ctrum demand in the US has been peculiar.Our FCC has granted four to seven times as much mid-band to unlicensed Wi-Fi as to our extremely efficient licensed networks.8 In contrast,Japan allocates equal amounts of mid-band to licensed and unlicensed.Nation-by-nation,allocation strategies and usage pa

6、tterns are quite diverse.1 OECD,OECD Communications Outlook 1999,(OECD Publishing,1999),http:/www.oecd-ilibrary.org/science-and-technology/oecd-communications-outlook-1999_comms_outlook-1999-en.2“Mobile Phone Subscriptions Worldwide 2023,”Statista,accessed May 5,2024,https:/ of Spread Spectrum Syste