Enhanced cell selection mechanisms in mobile communications

A method, comprising:

• determining, by a processor of a user equipment (UE), a frequency band and a subcarrier spacing (SCS) configuration by checking a profile;
• performing, by the processor, a cell selection or reselection procedure using the frequency band and the SCS configuration to select a cell of a wireless network;
• establishing, by the processor, a wireless connection with the selected cell;
• updating, by the processor, the profile upon either completion of the cell selection or reselection procedure, or receiving information related to one or more SCS configurations in the profile;
• and
• maintaining, by the processor, a default SCS configuration among the one or more SCS configurations in the profile,
• wherein the maintaining of the default SCS configuration comprises:
• storing a default value for the default SCS configuration in a default value table;
• and
• storing a respective exceptional value for each remaining SCS configuration of the one or more SCS configurations as a respective difference relative to the default value,
• wherein the receiving of the information related to the one or more SCS configurations in the profile comprises either:
• receiving signaling from the wireless network pertaining to the one or more SCS configurations in the profile;
• or
• retrieving the information from a Subscriber Identity Module (SIM) of the UE or a memory of the UE,
• wherein the updating of the profile comprises:
• referencing the default value table;
• and
• maintaining the default value without change responsive to a value indicated in the information being identical to the default value, and
• wherein the determining of the SCS configuration corresponding to the frequency band comprises applying the default value responsive to no entry of any SCS configuration in the profile corresponding to the frequency band.