at&t to Add 80 Cities to 3G Network

at&t Wireless will extend its third-generation (3G) wireless broadband network to more than 80 additional cities in the United States this year. About 270 communities already have 3G service available.

Most major metro areas already are covered, but you'd be surprised at the number of suburban communities even around the major markets that only have the slower EDGE data network. That's one reason, aside from battery life, that the Apple iPhone initially was available only in an EDGE network version.

By the end of the year, nearly 350 leading U.S. markets will be served by the 3G network, including all of the top 100 U.S. cities. The 3G initiative requires the building of more than 1,500 additional cell sites.

The at&t 3G network now delivers typical downlink speeds ranging between 600 and 1,400 kilobits per second, as well as uplink speeds ranging from 500 and 800 kilobits per second, though the network is not yet completely equipped for the higher upstream capacity at all sites.

People often underestimate how long it takes for a national network to be created, even if it is a wireless network. Back in the regulated days of telecom, for example, a sizable telecom company would expect to upgrade or replace only about 10 percent of total plant in any single year.

So access plant changed slowest, though switch replacements could occur more quickly. And it isn't just "physical" networks that have to be built. A large carrier might operate 50 to 100 "logical" networks, as each separate service often required its own hardware, software, provisioning and billing systems.

Likewise, consider that Verizon Wireless has invested $300 million in 2007 to enhance its networks in Maryland, Washington, D.C., and Virginia alone, largely related to broadband upgrades, spending $6.5 billion investment nationwide.

"Reliable wireless networks are not built overnight," says Tami Erwin, Verizon Wireless regional president.

From an at&t Wireless perspective, it will take a year to light 80 communities, using 1,500 towers, to create a 3G network in those areas. And there will be more work next year.