6.12.1 Asymmetric DL single-TRP and UL multi-TRP

For asymmetric DL single-TRP and UL multi-TRP operation, the UL TRP may reduce or even disable DL transmission. Pathloss offsets between two TRPs can be configured by RRC and dynamically updated by Pathloss Offset Update MAC CE, which is defined in TS 38.321[6]. Each pathloss offset is explicitly indicated for the corresponding UL/Joint TCI state for PUSCH, PUCCH, and SRS transmission toward the UL TRP. The pathloss offset can also be indicated by a PDCCH order for a PDCCH order triggered PRACH toward the UL TRP, thereby facilitating pathloss calculation. In addition, up to two closed loop power control adjustment states, as specified in clause 7.3 of TS 38.213 [38], can be supported for SRS separated from those used for PUSCH.