NewsFactor – As it gears up for its next-generation network, the nation’s top carrier, Verizon Wireless, is mulling a tiered pricing plan based on data usage, a top executive said in a published interview. The company’s chief financial officer, John Killian, told Business Week that as more smartphones access the Internet via Verizon’s network, “We will probably need to change the design of our pricing where it will not be totally unlimited, flat rate.”