Timing advanced measurement for candidate cells

An apparatus for wireless communications, at a user equipment (UE), comprising:

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• transmit a capability message indicating a first quantity of candidate cells supported by the UE for a first type of mobility procedure;
• receive, in response to the capability message, a control message indicating one or more candidate cells that correspond to a second quantity of candidate cells, the second quantity of candidate cells being in accordance with the first quantity of candidate cells supported by the UE, wherein the one or more candidate cells are candidates for the first type of mobility procedure;
• and
• receive a downlink control channel order that instructs the UE to transmit a random access channel message to a candidate cell of the one or more candidate cells in accordance with the first type of mobility procedure.