During its fourth quarter 2009 conference call, Chief Operating Officer John Stankey said AT&T plans to spend between $18 billion and $19 billion in 2010 upgrading its wireless and backhaul networks to handle the onslaught of new traffic. This is roughly $2 billion more than the company had invested in the previous year.
Specifically, Stankey said AT&T will add 2,000 new cell sites and upgrade existing cell sites with three times more fiber links than it had in 2009. This will increase capacity for the backhaul network that connects the cell towers to AT&T's main network. The backhaul portion of the network is a critical component to AT&T's network; with these upgrades in place, Stankey said the company will be able to easily upgrade in the future to 4G wireless technology.
AT&T will begin testing its 4G network using LTE, the same technology Verizon Wireless is using for its 4G network, starting in 2010, with a few commercial deployments ready in 2011 and more commercial deployments in 2012.
http://www.cnn.com/2010/TECH/01/29/att.network.boost/index.html