Provided are a method and a device applicable to a node for wireless communication. One example method includes: receiving first information, the first information comprises information indicating X physical random access channel (PRACH) occasions, wherein the X PRACH occasions are mapped to Q PRACH occasion groups, X is a positive integer greater than 1, and Q is a positive integer; and receiving second information, the second information comprises a plurality of candidate values, wherein the X PRACH occasions are mapped to the Q PRACH occasion groups based at least one of a priority of a candidate value associated with a respective PRACH occasion group or a quantity of PRACH occasion groups respectively corresponding to each candidate value of the plurality of candidate values.