 are repeated for the second transport block. 464 Chapter 4 TPC command for scheduled PUCCH (2 bits): It is used to adjust the PUCCH transmis- sion power. PUCCH resource indicator (2 bits): It is used to select PUCCH resources from a set of configured resources. PDSCH-to-HARQ_Feedback timing indicator (3 bits): It provides information on when the HARQ acknowledgment should be transmitted relative to the PDSCH transmission. Antenna port(s) and number of layers (4, 5, or 6 bits): The antenna ports PNA-1} are determined according to the ordering of DM-RS port(s). If a UE is configured with both dmrs-DownlinkForPDSCH-MappingTypeA and dmrs-DownlinkForPDSCH- MappingTypeB, the size of this field is equal to max(XA,XB), where and XB are the "antenna ports" bit sizes derived from dmrs-DownlinkForPDSCH-MappingTypeA and dmrs-DownlinkForPDSCH-MappingTypeB respectively. A number of zeros are inserted in the XB MSB positions of this field, if the mapping type of the PDSCH corre- sponds to the smaller value of or XB. Transmission configuration indication (0 or 3 bits): The size of this field is zero bit, if RRC parameter tci-PresentInDCI is not enabled; otherwise it would carry 3 bits. SRS request (2 or 3 bits): It is used to request transmission of a sounding reference sig- nals in the uplink. For UEs not configured with SUL in the cell, 2 bits are used, whereas for UEs that are configured with SUL in the cell, 3 bits are used where the first bit is the non-SUL/SUL indicator and the second and third bits are used to request periodic or aperiodic SRS transmission. This bit field may also indicate the associated CSI-RS. CBG transmission information (0, 2, 4, 6, or 8 bits): If CBG retransmissions are config- ured, this field indicates the code block groups that are retransmitted. CBG flushing out information (0 or 1): If CBG retransmissions are configured, the con- tent of this field indicates the soft buffer flushing, which is determined by RRC parame- ter codeBlockGroupFlushIndicator. DM-RS sequence initialization (1 bit): This