Abstract: A user equipment receives RACH resource information comprising connection relationship information between RACH resources and synchronization blocks of a cell, and RACH preamble information representing a preamble sequence dedicated to the user equipment. On the basis of the RACH resource information and the RACH preamble information, the user equipment transmits the preamble sequence on a first RACH resource connected with a first SS block of the cell, and transmits the preamble sequence on a second RACH resource connected with a second SS block of the cell.