Patent ID: 8787915

Claim:
A method of cell reselection for a user equipment (UE) in a network, the method comprising: performing, by the UE, a measurement of cells; determining, by the UE, whether a hierarchical cell structure (HCS) is used in a serving cell; if the HCS is not used in the serving cell, performing ranking of the measured cells satisfying a first criterion, wherein the first criterion is a cell selection criterion S that is used to select measured cells satisfying a minimum quality condition; if the HCS is used in the serving cell, performing ranking of the measured cells satisfying both the first criterion and a second criterion, wherein the second criterion is a quality level threshold criterion H that is used to determine whether a prioritized ranking according to hierarchical cell reselection rules apply; and performing, by the UE, cell reselection to a best cell in ranking of the measured cells satisfying both the first criterion and the second criterion, wherein the first criterion is considered prior to the second criterion when performing ranking of the measured cells.