The present disclosure proposes, in a terminal apparatus that communicates with a plurality of base station apparatuses while switching a connection destination, processing of acquiring a communication parameter associated with at least one handover destination candidate base station apparatus and information on an LTM execution condition, processing of determining whether the LTM execution condition associated with a handover destination candidate base station apparatus is satisfied before receiving a Cell Switch Command instructing a change of a connection destination cell from a handover source base station apparatus, and transmitting an RA preamble to the handover destination candidate base station apparatus associated with the LTM execution condition when the LTM execution condition is satisfied.