re initially deactivated upon configuration and after a handover. TCI state indication for UE-specific PDCCH The network may indicate a TCI state for physical downlink control (PDCCH) reception for a CORESET of a serving cell by sending the TCI state indication for UE-specific PDCCH MAC CE. New Radio Access Layer 2/3 Aspects and System Operation 207 SP CSI reporting on physical uplink control channel (PUCCH) activation/deactivation The network may activate and deactivate the configured SP CSI reporting on PUCCH of a serving cell by sending the SP CSI reporting on PUCCH activation/ deactivation MAC CE. The configured SP CSI reporting on PUCCH is initially deactivated upon configuration and after a handover. SP SRS activation/deactivation The network may activate and deactivate the configured SP SRS resource sets of a serving cell by sending the SP SRS activation/deactivation MAC CE. The config- ured SP SRS resource sets are initially deactivated upon configuration and after a handover. PUCCH spatial relation activation/deactivation The network may activate and deactivate a spatial relation for a PUCCH resource of a serving cell by sending the PUCCH spatial relation activation/deactivation MAC CE. SP zero power (ZP) CSI-RS resource set activation/deactivation The network may activate and deactivate the configured SP ZP CSI-RS resource set of a serving cell by sending the SP ZP CSI-RS resource set activation/deactivation MAC CE. The configured SP ZP CSI-RS resource sets are initially deactivated upon configuration and after a handover. Recommended bit rate The recommended bit rate procedure is used to provide the MAC entity with infor- mation about the physical layer bit rate which the gNB recommends. An averaging window with default size of 2 seconds is applied. The gNB may transmit the recom- mended bit rate MAC CE to the receiver-side MAC entity to indicate the recom- mended bit rate for the UE for a specific logical channel and downlink/uplink direction. Single and multiple-entry power headroom report (PHR) The 