National 4G provider Clearwire is bound to keep using WiMAX for its network until at least 2011, an SEC filing discovered this week has found. The carrier is now known to have struck a deal with Intel that requires it use WiMAX for at least the next two years in exchange for marketing help from the chipmaker. Clearwire also has to share revenue whenever the subscriber's device is Intel-based as well as pay a limited number of activation fees.
