Lack of a dominant cell:
In an area without a dominant cell, the receive level of the serving cell is similar to the receive levels of its neighboring cells. The receive levels of downlink signals between different cells are close to cell reselection thresholds. Receive levels in an area without a dominant cell is also unsatisfactory.
The SNR of the serving cell becomes unstable because of frequency reuse, and even receive quality becomes unsatisfactory.
In this situation a dominant cell is frequently reselected and changed in idle mode. As a result, frequent handovers or service drops occur on UEs in connected mode because of poor signal quality. An area without a dominant cell can also be regarded as a weak coverage area.
