4.30 for permissible values). BWP,i is the lowest numbered resource block of the initial active uplink bandwidth part based on common resource block indexing and is derived via RRC parameter initialUplinkBWP during initial access; otherwise, Nstart BWP,i is the lowest numbered resource block of the active uplink bandwidth part based on common resource block indexing and is derived by the higher layer parameter BWP-Uplink. nstart NRA is the frequency offset of the lowest PRACH transmission occasion in the frequency-domain relative to PRB_0 of the initial active uplink bandwidth part given by the RRC parameter msgl-FrequencyStart during initial access associated with the initial active uplink bandwidth part; otherwise, nstart is the frequency offset of lowest PRACH transmission occasion in frequency domain with respect to physical resource block 0 of the active uplink bandwidth part given by the RRC parameter prach- frequency-start associated with the active uplink bandwidth part. NRA is the PRACH transmission occasion index in the frequency-domain for a given PRACH transmission occasion in time. RB is the number of resource blocks that are occupied by PRACH preamble. The starting position of PRACH preamble in a subframe RA start Afra E {1.25, 5, 15, 30} kHz or in a slot with 60 kHz subcarrier spacing when New Radio Access Physical Layer Aspects (Part 2) 623 defined start l = 0; otherwise, start start,1- + The subframe or 60 kHz slot is assumed to start at t = 0. The timing advance is assumed to be zero NTA = 0. The numerology corresponding to Afra E {1.25,5} kHz is assumed to be u = 0; otherwise, it is given by Afra E 60, 120} kHz, and the symbol position l is given by = lo + + 14nRA where lo is the starting symbol, nRA is the PRACH transmission occasion within the PRACH slot, num- bered in increasing order from 0 to NRA,slot - 1 within a RACH slot, NRACtion duration is given and the nRA depends on fra, that is, if fRA E {1.25,5 15, 60} kHz then nRA = 0; otherwise if {fra e{30,120} kHz and either of the number of 