We’ve known for decades that the demand for broadband growth has been doubling every three years since 1980. Like at any time along that growth curve, there are those that look at the statistics and think that we are nearing the end of the growth curve. It’s hard for a lot of people to accept that bandwidth demand keeps growing on that steep curve.
But the growth is continuing. The company OpenVault measures broadband usage for big ISPs and they recently reported that the average monthly data use for households grew from 201.6 gigabytes in 2017 to 268.7 gigabytes in 2018 – a growth rate of 33%. What is astounding is the magnitude of growth, with an increase of 67.1 gigabytes in just a year. You don’t have to go back very many years to find a time when that number couldn’t have been imagined.
That kind of growth means that households are finding applications that use more bandwidth. Just in the last few weeks I saw several announcements that highlight how bandwidth consumptions keep growing. I wrote a blog last week describing how Google and Microsoft are migrating gaming to the cloud. Interactive gaming already uses a significant amount of bandwidth, but that usage is going to explode upwards when the machine operating the game is in a data center rather than on a local computer or game console. Google says most of its games will operate using 4K video, meaning a download speed of at least 25 Mbps for one stream plus an hourly download usage of 7.2 GB.
I also saw an announcement from Apple that the users of the Apple TV stick or box can now use it on Playstation Vue to watch up to four separate video steams simultaneously. That’s intended for the serious sports fan and there are plenty of households that would love to keep track of four sporting events at the same time. If the four separate video streams are broadcast in HD that would mean downloading 12 GB per hour. If the broadcasts are in 4K that would be an astounding 29 GB per hour.
The announcement that really caught my eye is that Samsung is now selling an 8K video-capable TV. It takes a screen of over 80 inches for the human eye to perceive any benefit from 8K video. There are no immediate plans for anybody to broadcast in 8K, but the same was true when the first 4K TVs were sold. When people buy these TVs, somebody is going to film and stream content in the format. I’m sure that 8K video will have some improved compression techniques, but without a new compression scheme, an 8K video stream is 16 times larger than an HD stream – meaning a theoretical download of 48 GB per hour.
Even without these new gadgets and toys, video usage is certainly the primary driver of the growth of household broadband. In 2014 only 1% of homes had a 4K-capable TV – the industry projects that to go over 50% by the end of this year. As recently as two years ago you had to search to find 4K programming. Today almost all original programming from Netflix, Amazon, and others is shot in 4K, and the web services automatically feed 4K speeds to any customer connection able to accept it. User-generated 4K video, often non-compressed, is all over YouTube. There are now 4K security cameras on the market, just when HD cameras have completely replaced older analog cameras.
Broadband usage is growing in other ways. Cisco projects machine-to-machine connections will represent 51% of all online connections by 2022, up from 40% today. Parks and Associates just reported that the average broadband home now has ten connected devices, and those devices all make internet connections on their own. Our computers and cellphone automatically update software over our broadband connections. Many of us set our devices to automatically back-up our hard drives, pictures, and videos in the cloud. Smart home devices constantly report back to the alarm monitoring service. None of these connections sound large, but in aggregate they really add up.
And sadly, we’re also growing more inefficient. As households download multiple streams of music, video, and file downloads we overload our WiFi connection and/or our broadband connection and thus request significant retransmission of missing or incomplete packets. I’ve seen estimates that this overhead can easily average 20% of the bandwidth used when households try to do multiple things at the same time.
I also know that when we look up a few years from now to see that broadband usage is still growing that there will be a new list of reasons for the growth. It may seem obvious, but when handed enough bandwidth, households are finding a way to use it.