Clearwire spectrum is the one for the future and what Son is after;
Quote:In busy urban areas, it is capacity rather than range that’s required. In some countries, we are already seeing macro cells deployed very densely: in London every 400 to 500 meters, in China every 200 meters, and in Japan even closer. In this situation, we don’t recommend using lower frequencies (e.g. 700 or 850 MHz) because of the greater interference issues. Instead, we’d expect both 3G and LTE to use higher frequencies, such as 1800 MHz, 2.1 GHz, 2.3 GHz and 2.6 GHz.