RF Resource (RR) Efficiency measure the time when a cell is in a qualifying active set for a Ue that the cell is the primary server. For a measured area where it qualifies to be in the active set, the RR Efficiency for a cell is where the cell is the best server for all areas that it remains in a Ue’s active set. The greater the efficiency equate to the greater the cell is the primary server in the active set.
This equates to improved power efficiency for the cells main traffic. In contrast the greater the SHO%, the more places in the cells serving area also has other cells in it’s active set. Efficient networks mean improved capacity, spectral effieciency, and reduced power consumption by the base stations and mobiles alike.