First letâ€™s start by looking at the infrastructure Google has already built or committed to building â€” the largest fiber backbone in the world and the largest and most widely distributed data center build-out in the world. Both are FAR in excess of Googleâ€™s current or even future requirements UNLESS they are also intended to work with a massive 700-MHz wireless network.
Imagine a hybrid wireless broadband mesh network using 700-MHz connections for backhaul and some truly mobile links and WiFi for local service. Google has enough experience with WiFi in Mountain View to know that it isnâ€™t, by itself, a good solution for wide area networks. The key failing of metro WiFi networks is backhaul to the Internet backbone. But if Google used its 700 MHz band for that AND implemented it as a true mesh network, there would easily be enough capacity to serve almost any size network given a suitable number of backbone connections.