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Wifi transmit power region12/29/2023 ![]() Effective Isotropic Radiated Power (EIRP) is the amount of power transmitted by the antenna of a device. Standard power operates most like the existing FCC rules for 5-GHz spectrum. Standard power can operate only in a subset of the 6 GHz band (the UNII5 and UNII7 bands). To calculate the approximate bandwidth of a given channel, you can use the following formula: Signal Bandwidth = Rate / Bandwidth EfficiencyĪpplying this formula to the example below shows that this link is 163 Mbps/7bits/Hz = 23.3 MHz of spectrum.Īs an example, here is a typical common carrier link.įSS (uplinks/downlinks) (6.875-7.075 GHz only) ![]() If you look at Figure 2 you will see that specific channels are used on each link. Everything else is tuned out as background noise. To return to the telescope analogy, if the telescope was being operated by someone looking for a specific color, you would have to be directly in the sight of the telescope and match that color in order to be noticed. The incumbent also consumes a limited amount of spectrum. Thus, you can potentially deploy an unlicensed 6 GHz device near an existing incumbent deployment without affecting the performance of that deployment. This has an effect similar to that of looking through a high-powered telescope: objects that are directly in the line of sight are greatly magnified, but anything that is off-center, even just slightly, will not be seen. This means that unless an interfering source is directly in line with a deployed link, there will be a great deal of rejection of the interference. While having five pages of such licenses for one city may look intimidating, the good news is that the typical incumbent point-to-point link uses a narrow-beamwidth antenna or “directional antenna” and often has a beamwidth of only 1 degree. We can see in this sample that many of these licenses are for city operations, utilities, and wireless carriers. As an example, here is a snapshot of some of the incumbents in the Galveston, Texas, area (a coastal city) in the UNII-5 band. Who are the incumbent operators, and what can be expected in a given area? The most common type of licensed operation in these bands is point-to-point links. Otherwise, calculations, models, margins, etc., favor the protection of incumbents. The exception is that aggregation of power from all devices in an area is not tracked instead, devices are considered individually. The process and regulations take a conservative approach that favors incumbent operators in almost all cases. The primary consideration for the FCC regulations in the 6 GHz band is the protection of incumbent operators of 6 GHz spectrum. For information on regulations in other countries, the Wi-Fi Alliance has a good reference that can be found at: GHz-wi-fi-6e. and Canada currently have a strategy for standard power operation in the 6 GHz spectrum. It should also be noted that only the U.S. and Canada in terms of 6 GHz spectrum utilization, and while this paper focuses on FCC regulations, many of the principles will be applicable to requirements and regulations for other countries. In other words, what regulations apply to 6 GHz, and what can be done to get the most out of this additional spectrum? It should be noted that while not all countries have caught up to the U.S. This 6 GHz spectrum provides almost three times as many channels as what is available in 5 GHz, and new security protocols introduced with Wi-Fi 6E will make this spectrum even more secure.īut what often isn’t reported is how to implement 6 GHz. ![]() These papers discuss the most valuable capability of Wi-Fi 6E, which is the additional spectrum in the 6 GHz range that isn’t encumbered by legacy protocols or clients. It is easy to find blogs and papers discussing why Wi-Fi 6E, and specifically the 6 GHz spectrum, offers many advantages for Wi-Fi deployments. The usefulness of this unlicensed spectrum to help meet the increasing demand for Wi-Fi (“almost 50 percent of total IP traffic will be Wi-Fi within the next two years”), to maintain connectivity in times of isolation, and to provide underserved communities with broadband access are just a few advantages available with the additional spectrum. Federal Communications Commission (FCC) Commissioner Michael O’Rielly on the potential uses of this band clearly states the need for 1200 MHz of this bandwidth for unlicensed use. Wi-Fi 6E builds upon these enhancements with the addition of the 6 GHz spectrum.Ī 2020 statement by former U.S. Wi-Fi 6 introduced many new enhancements to wireless networks.
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