As data consumption by smartphone users increases exponentially every year, wireless technology companies are looking to harness the unlicensed spectrum normally used for WiFi connections to improve cellular performance. Ericsson AB, which claims to be the largest wireless equipment provider in the world, and Qualcomm Inc., which makes mobile chips for both consumer devices and enterprise clients, released information about their efforts to expand LTE into unlicensed 5 GHz spectrum (LTE-U) during the International Consumer Electronics Show (CES) in Las Vegas this week. Eric Parsons, head of...