A method for wireless communication at a user equipment, UE , in a cell, comprising: transmitting (610; 1505; 1615; 1710; 1815; 1910), to a base station serving the cell, a random access message of a two-step random access procedure, the random access message including a random access preamble (305, 310; 405, 410; 505, 510) and a random access payload (415, 420, 425, 430; 515, 520, 525, 530), at least one of the random access preamble or the random access payload being transmitted based at least in part on one or more cell-specific transmission parameters or cell-specific transmission schemes; receiving (615; 1510; 1620; 1715; 1820; 1915), from the base station, a random access response message (230; 535, 540, 545, 550) of the two-step random access procedure in response to the random access message; and establishing (620; 1515; 1625; 1720; 1825; 1920) a connection with the base station based at least in part on the random access message and the random access response message, wherein transmitting the random access message comprises: determining a random access radio network temporary identifier based at least in part on a cell identifier; scrambling information bits of the random access payload based at least in part on the random access radio network temporary identifier, wherein a scrambling sequence applied to the information bits of the random access payload is a function of the cell identifier and a UE identifier; and transmitting the scrambled information bits of the random access payload after channel coding. transmitting (610; 1505; 1615; 1710; 1815; 1910), to a base station serving the cell, a random access message of a two-step random access procedure, the random access message including a random access preamble (305, 310; 405, 410; 505, 510) and a random access payload (415, 420, 425, 430; 515, 520, 525, 530), at least one of the random access preamble or the random access payload being transmitted based at least in part on one or more cell-specific transmission parameters or cell-specific transmission schemes; receiving (615; 1510; 1620; 1715; 1820; 1915), from the base station, a random access response message (230; 535, 540, 545, 550) of the two-step random access procedure in response to the random access message; and establishing (620; 1515; 1625; 1720; 1825; 1920) a connection with the base station based at least in part on the random access message and the random access response message, wherein transmitting the random access message comprises: determining a random access radio network temporary identifier based at least in part on a cell identifier; scrambling information bits of the random access payload based at least in part on the random access radio network temporary identifier, wherein a scrambling sequence applied to the information bits of the random access payload is a function of the cell identifier and a UE identifier; and transmitting the scrambled information bits of the random access payload after channel coding. determining a random access radio network temporary identifier based at least in part on a cell identifier; scrambling information bits of the random access payload based at least in part on the random access radio network temporary identifier, wherein a scrambling sequence applied to the information bits of the random access payload is a function of the cell identifier and a UE identifier; and transmitting the scrambled information bits of the random access payload after channel coding. <EOS>