Wifi Interference – Add More Routers?

Many people believe its possible to overcome interference from other wifi networks and sources of interference, such as microwaves and remote controls, by having a high density of access points.

wifi-interferenceThe inexpensive nature of 802.11 access points and routers makes it extremely tempting to set up many in a small area. For example, some networks set them up in every room of an office to combat wifi interference.

This type of deployment means you greatly increase the capacity of the network, allowing ‘spatial reuse’ of the spectrum. It seems obvious that by having more access points spread about, it’s more likely that clients will be able to operate successfully even when interference is present.

But, when you deploy a dense network of access points, it’s necessary to reduce the transmit signal power of each access point. If you don’t reduce the power, the access points generate wifi interference to each other, which is known as co-channel interference. Most cheap wireless routers don’t allow you to alter the transmit signal power though!

The reduction in the transmit power of the access point exactly offsets the potential benefit of interference immunity. This means the interference immunity of a network with dense deployment of access points is not significantly better than that of a less dense deployment.

Many people over-design their networks for capacity, but a high density of access points is not a simple solution for interference.

Winchester City Council – Don’t flatten our Car Parks

Winchester City Council appears to live in an age when cars obviously didn’t exist.

With yet another car park looking to be extinguished, they have yet again ignored the wishes of local people and not considered the needs of those who live in the city boundaries.

2013′s Winchester District Car Parking Strategy consultation didn’t sufficiently consider the needs of those who live in the city and have most trouble parking their cars night and day.

The outcomes offered no alternative for those of us who have difficulty parking within 10 minutes walk of our properties.

As a tax-paying resident unable to purchase a parking permit from the Parking Office for less than £1,100 per year, I believe our parking officials consider car-owning residents as second-class citizens who should be finding an impossible greener alternative.

For those of us who are trying to build our own businesses from home and need access 24 hours a day to contribute towards our local economy, this is an extra tax that stops us from being able to make more of a difference to our great city.

The Council must consider the views of local residents who need car parking facilities, not just tourist and business traffic.

We are the rate payers who vote our local Councillors in (and out), and they should be primarily considering the needs of their constituents before greedily looking to prosper from assets which can never be re-purchased.

WiFi Expert, Digital Marketeer & Journalist from Winchester, Hampshire UK