d for HARQ-ACK and SRs. As shown in Fig. 4.78, PUCCH format 0 sequence is generated 11 and 1=0 for single-symbol PUCCH transmission and l =0,1 = for double-symbol PUCCH transmission. The sequence p(a,8, (n) was defined in the previous section, in which the parameter Mcs depends on the UCI. The sequence x(n) is New Radio Access Physical Layer Aspects (Part 2) 609 Scheduling request HARQ-ACK (1 or 2 bits) Phase rotation One OFDM symbol Per symbol pseudo random variation Configurable ID Per slot pseudo random variation Base sequence Base sequence One PRB (NACK/ACK) (NACK/ACK, -SR) (NACK/ACK, +SR) (NACK/NAC +SR) (ACK/ACK) (NACK/NACK)(ACK/ACK, -SR) (NACK/NACK, -SR) (ACK/ACK, +SR) Active uplink BWP (ACK/NACK, +SR) (ACK/NACK) (ACK/NACK, -SR) Figure 4.78 Time-frequency structure of PUCCH format 0 and signaling via phase rotation [6,14]. multiplied by amplitude scaling factor BPUCCH-FO in order to adjust the transmit power and is mapped sequentially to resource elements (k,l) assigned for PUCCH transmission in frequency-first manner on a single-antenna port [6]. As shown in Fig. 4.78, the phase rotations through parameter a represent different informa- tion bits that are separated with TT and /2 for 1- and 2-bit HARQ-ACK, respectively. In the case of a simultaneous SR, the phase rotation is increased by /4 for 1-bit acknowledgments and by /6 for 2-bit acknowledgments. The base sequences are configured per cell using an identity provided as part of the SI. Furthermore, a sequence hopping, where the base sequence varies on a slot-by-slot basis, can be used to randomize the interference between different cells. PUCCH format 0 is typically transmitted at the end of a slot. If two OFDM symbols are used for PUCCH format 0, the same information is transmitted on both OFDM symbols. However, the reference phase rotation as well as the frequency-domain resources may vary between the symbols, effectively creating a frequency-hopping effect [6,14]. 4.2.3.1.2 PUCCH Format 1 Structure and Physical Processing PUCCH format 1 is the long-