A Network Without Wires

Wi-FiThere is an emerging trend in the industry to try to create home networks without wires. ISPs and cable companies are all putting a lot of faith into WiFi as an alternative for wires running to computers and settop boxes.

It’s an interesting trend but one that is not without peril. The problem is that WiFi, at least like the big ISPs deliver it, is not always the best solution. The big cable companies like Comcast tend to provide customers with a cable modem with a decent quality WiFi router built in. This router is placed wherever the cable enters the home, which might not be the ideal location.

A single strong WiFi router can be a great device in a home with a simple network and uncomplicated demands. A family with two TVs, one computer, and a few smartphones is probably going to do fine with a strong WiFi router as long as the house isn’t too large for the signal to get where it’s needed.

But we are quickly changing to a society where many homes have complex data needs scattered throughout the house. People are likely to be demanding video streams from all over the home, and often many at the same time. There are bound to be a few computers and it’s not unlikely that somebody in the house works at home at least part of the time. Demands for big bandwidth for things like gaming and the new virtual reality sets that are just now hitting the market are increasing. And we are on the verge of seeing 4K video streams at 15 Mbps. On top of all this will be a variety of smart IoT devices that are going to want occasional attention from the network.

When a home gets crowded with devices it’s very easy to overwhelm a WiFi router. The new routers are pretty adept at setting up multiple data paths. But with too many streams the router will lose efficiency as it constantly tries to monitor and change the bandwidth for each stream it is managing. When this happens a home network can bog down, dropping the efficiency of the router precipitously.

There are a few solutions to this problem. First, you can run wires directly to a few of the bigger data eaters in a house and remove them from the WiFi network. Just make sure in doing so that you also disable having them search for a WiFi signal. But people don’t really want more wires in their home, and ISPs definitely do not like this idea.

The other solution is to add additional WiFi hotspots in the home. The simplest example of this are WiFi repeaters that simply amplify the signal from the base WiFi hotspot. However, repeaters don’t improve the contention issue, they simply bring a stronger signal closer to some of the devices that need them.

A more complex solution is to set up a network of interconnected WiFi hotspots. This consists of separate WiFi routers that all feed through one base router, a configuration that is familiar to any network engineer but alien to most home owners. The main problem with this solution is obvious to anybody who has ever operated a network with multiple routers – getting them to work together efficiently. Setting up a multiple-router network can be challenging to those unfamiliar with networks. And if configured poorly this kind of network can operate worse than one big hotspot.

But these kinds of interconnected WiFi networks are the cutting edge of home networking. I was recently talking to an engineer from a mid-size cable company and he admitted that as many as 20% of their customers already need this kind of solution. It’s a bit ironic that the demand for WiFi is mushrooming so soon after the ISPs went to the one-router solution. The percentage of homes that need a better solution is growing rapidly as homes jam more devices onto WiFi.

So there is an opportunity here for any ISP. Customers need better networks in their homes and there is a revenue opportunity in helping them to set these up. The downside, at least for now, is that this is labor intensive and there may be a lot of maintenance to keep these networks running right. But there are a number of vendors looking into solutions and one would hope that home WiFi networks will soon become plug and play.

2 thoughts on “A Network Without Wires

  1. Dear Doug:
    As I contemplated your thesis, I got to thinking, “Ugh, another technology in search of a solution.”
    But then I remembered Ken Olson, of Digital Equipment Corp., formerly in Maynard, Mass. (?), and remembered his famous quote, to the effect that people do not need more than 75K… And we all remember that he obviously won out over some dude named “Jobs”, who surmised that it not what they NEED, but what they ARE WILLING TO PAY FOR…

    WiFi has its purpose in the home. Computer access, CATV and other applications are obviously very useful, the ability to move wirelessly and seemlessly throughout the home is quite advantageous. Whether we need all of our utility/appliances connected is still a matter of debate, but I still question the overall usefulness of of a robust network in such a small application?

    On the other hand, remembering Mr. Jobs’ point, maybe everyone ought to just ignore my concerns!!

    ~ Ron


    • Ron: You are an analog man in an ever-increasingly digital world! The fact we can’t avoid moving forward is that there will be more and more devices wanting to make connections to WiFi. Certainly not everybody will enable these devices, but if you do then it’s not hard to overtax a WiFi network just through sheer numbers of connections.


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