I watched a few news reports of the various protests, and protesters cited the following concerns about 5G. They say that it’s already being installed and will be active in most cities by next year. They say that in the near future that cellular speeds will be 100 times faster than today. They say that the FCC has blessed 5G as safe when it’s not. Let me address each of these issues:
What is 5G? Many of the protestors don’t realize that 5G is the marketing name of several different technologies. 5G can mean improved cellular service. 5G can mean high-speed wireless broadband loops like is being tested by Verizon in Sacramento. And 5G can mean gigabit radio connections made between two points, similar to traditional microwave backhaul. Protestors have conflated the claims for each technology and assume they apply to 5G cellular service.
Is 5G Being Installed Today? Cities everywhere are seeing permit requests for small cell sites and often believe these are requests to install 5G – I just talked to a fairly large city the other day who made this assumption. For now, the requests for small cell sites are to bolster the 4G cellular network. The cellular companies aren’t talking about it, but their 4G data networks are in trouble. People are using so much data on their phones that cell sites are getting overwhelmed. The amount of data being used by cellphones users is currently doubling every two years – and no data network can handle that kind of growth for very long. The cellular carriers are quietly beefing up the 4G networks in order to avoid the embarrassment of major network crashes in a few years. They are hoping that within 3 -5 years that 5G can relieve some of the pressure from cellular networks.
Will 5G Be Here Next Year? It might be a decade until we see a full 5G cellular installation. There are 13 major specifications for improvements between 4G and 5G and those will get implemented over the next decade. This won’t stop the marketing departments of the cellular carriers to loudly claim 5G networks after one or two of these improvements have been partially implemented. What the cellular companies never bothered to tell the public is that the first fully-compliant 4G cell site was just implemented last year – 5G is going to require the same slow steady introduction of changes until full 5G gets here. Starting a year or two from now we might see some 5G improvements, with more 5G upgrades introduced each year thereafter. The carriers will loudly announce every time they make a 5G trial and will make the world think they are the improvements will be immediately installed everywhere.
Will Cellular Speeds be 100 Times Faster? The 5G specification calls for cellular speeds to be improved over time to 100 Mbps, about 6 times faster than 4G cellular speeds today. Speeds won’t improve overnight and this certainly isn’t going to be here in a year or two.
The public thinks that we’ll see gigabit cellular speeds for several reasons. First, Verizon recently introduced a trial for fast cellular using millimeter wave spectrum in small portions of a few downtown areas. Millimeter wave cellular is not going to make sense for wide deployment because the fast data speeds only carry perhaps 200 feet from the transmitter. Millimeter wave spectrum in this application is blocked by almost everything in the environment. This trial was mostly to grab headlines, not to portend a real product. Confusion also came when AT&T recently announced a 2 Gbps connection made to an outdoor hot spot. This is using point-to-point technology that can never apply to cellphones – but the AT&T announcement made this fuzzy on purpose.
What About the Health Impacts? Most 5G cellular service will use the same spectrum, or some new bands that are similar to today’s cellular spectrum. The primary concern for 5G cellular (and 4G) is the introduction of small cell sites into neighborhoods. It’s concerning to citizens when a cell site is on a pole at their curb instead of at the top of a tall tower outside the neighborhood. The neighborhood cell sites are going to be broadcast at a lower power level than the current big cell sites, so theoretically the amount of cellular radiation ought to be similar to today. But to give credit to the protesters, we’ll only know that’s really true after small cell sites have been installed.
The real health concern that is troublesome is not related to 5G cellular using the same frequencies as today, but rather about the use of millimeter wave spectrum. A significant percentage of the world’s scientists that work in this area recently warned the United Nations that some past research of millimeter wave spectrum shows negative impacts for plant and animal life. The scientists admit that much more research is needed and they pleaded with the UN to not use the general public as guinea pigs. Belgium recently banned millimeter wave spectrum deployment until the health risks are understood. The FCC joins with almost every other country in allowing the deployment of millimeter wave spectrum and is in the process of licensing more of the spectrum.
As mentioned earlier, Verizon recently did a few trials of sending millimeter wave spectrum to cellphones. This was viewed mostly as a gimmick because this doesn’t seem to have real-life market potential due to the limitations for the spectrum and cellphones. I just saw an estimate that it would take over 300,000 small cell sites to blanket Los Angeles with small cells that are close enough to deploy millimeter wave spectrum – that doesn’t sound like a plausable or profitable business plan.
The technology where the protesters should be focused is millimeter wave spectrum wireless loops. Verizon deployed this to a few hundred homes in Sacramento and a few other cities, delivering about 300 Mbps broadband to homes. Verizon says they have plans to deploy this widely. This is the spectrum use that the scientists warned about. A deployment of millimeter wave loops means constantly bombarding residential neighborhoods with millimeter wave spectrum from poles on the curb. The other planned use of millimeter wave spectrum is for indoor routers that will transmit gigabit bandwidth inside of a room. People can clearly decide to not use millimeter wave routers, but have no say about a carrier introducing it into the neighborhood. Protesters have a valid concern for this technology.