Methods, apparatuses, and systems are provided for a
user equipment (UE) supporting on- demand
system information block 1 (SIB1) mode operation and being served by a first
cell, the methods, apparatuses, and systems supporting switching towards a second
cell operating in an on-demand SIB1 mode. The UE receives from the first
cell an indication of an on-demand SIB1 configuration information for requesting acquisition of SIB1 information from the second cell which triggers the UE to perform measurements related to the second cell, and e.g. may enable the UE to switch from the first to the second cell for
power saving reasons or else. The cell reselection priority associated with a
frequency band deployed by the second cell may be adjusted, wherein the on-demand SIB1 reselection priority is e.g. set higher than the reselection priority associated with the
frequency band deployed by the first cell, e.g. to enabled higher priority performs measurements with respect to the
frequency band deployed by the second
cell based on the on-demand SIB1 reselection priority. The UE may determine to switch to the second
cell based on the results of the measurements. Similar methods, apparatuses, and systems are provided for a cell.