The newfound ability to use an additional fifty-nine 20 MHz-wide channels at power levels of 18-30 dBm maximum EIRP is a game changer.įigure 2: Expanded Unlicensed Use of the 6 GHz band This announcement makes Wi-Fi a true superpower since the majority of enterprise deployments are contained indoors and a basic best practice for WLAN engineers is to limit the output power from each AP in order to optimize performance and lessen co-channel interference. By authorizing use of the entire 6 GHz band for this type of use, we provide opportunities for unlicensed operations to use up to 320-megahertz channels to expand capacity and performance capabilities.” Figure 1: Current 6 GHz channel allocations – 802.11ax Draft 6.0 The even better news is that the FCC is “opening the entire 6 GHz band for unlicensed indoor low power access points. Enabling synergistic use of both the 5 GHz and 6 GHz bands for promoting unlicensed broadband deployment.” This will permit operations at the same power levels already permitted in the 5 GHz U-NII-1 and U-NII-3 bands (5.150-5.250 GHz and 5.725-5.850 GHz, respectively). The good news is that the FCC will “authorize unlicensed standard power access points in the U-NII-5 and U-NII-7 bands through the use of an AFC (automatic frequency control/coordination) system. Note: Quotations taken directly from FCC-CIRC2004-01 Which do you want first? The good news? Or the even better news? In this chapter of Future-Fi I will share details of the Report and Order specification, which is the target of Thursday’s vote. If it succeeds, as expected, the new spectrum addition for Wi-Fi will spark a huge change in capability and innovation. The FCC Open Meeting scheduled for Thursday April 23 will decide whether this document becomes law.
The details of the upcoming FCC Report and Order concerning unlicensed usage of the 6 GHz band are written and have been posted. Here it is, just 18 months later, and we are expecting final closure on the matter by the end of this week. In addition, I shared evidence that the 802.11ax Task Group was already embedding support for those upcoming channels into the new specification, which is still undergoing ratification. In October 2018, I first reported that the FCC was considering opening the 6 GHz band for unlicensed usage by way of Notice of Proposed Rulemaking (NPRM) 19-138, in Future-Fi, Chapter 2. With important details from the upcoming Report and Order as posted in FCC-CIRC2004-1. Chapter 5: Technical Details of the FCC’s Report and Order on the Unlicensed 6 GHz Usage
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