This means setting up a radio link such as Wi-Fi networks within the city.

The technology has matured over the last few years this has become a very good solution.

Compared to a dedicated microwave link this has less bandwidth but is easier to set up as the licensing problems are not an issue.

The picture above shows a small Wi-Fi network set up to allow offices to share their data over a WAN.

Just as with the Microwave solution, the data must be encrypted to ensure privacy.