To increase capacity in a spread spectrum packet communication system, a closed loop power control (CLPC) is provided for a common/shared downlink transport channel, such as a Forward Access Channel (FACH) and Downlink Shared Channel (DSCH), by using an existing uplink Common Packet Channel (CPCH) mechanism....http://www.google.de/patents/US6757319?utm_source=gb-gplus-sharePatent US6757319 - Closed loop power control for common downlink transport channels
