AT&T (NYSE: ATT) is planning to spend some $110 million in upgrades to its wireless network across the Carolinas this year.

In North Carolina, the communications company said it would create 85 new cell sites, more than 30 of which will be in the Charlotte area alone. Additional sites also are planned around Raleigh and Greensboro.

AT&T’s high-speed multimedia capable network, or 3G, also will be expanded to cover the Fayetteville and Jacksonville areas. Additional 3G coverage is planned around Raleigh as well.

Additionally, AT&T plans to open 17 retail stores across the state plus two stores in Charlotte that feature the firm’s entire line of telephone, video, wireless and broadband offerings.

In South Carolina, AT&T will expand its 3G network in Charleston, Greenville, Spartanburg and Clemson/

Additional cell sites are also planned.

The investments will boost AT&T’s spending on network expansion and upgrades in North Carolina to some $1.5 billion and South Carolina to more than $700 million over the past three years.