Take me out to the ballgame, with 4G

Ever been to a sports game and tried to send a text message, upload a photo to Facebook, or send a tweet about that awesome play that just happened? If so, you may have been left frustrated by the overcrowded network that prevented that all-important message from making your friends jealous. AT&T is looking to address the challenge of high-density cell use areas by installing Distributed Antenna Systems (DAS) at stadiums and other places where crowds congregate frequently, such as airports, hotels, casinos and conventions centers. The latest installation: at TD Garden in Boston, where the Boston Bruins and Boston Celtics play.