Method and device for transmitting/receiving downlink control information in wireless communication system
摘要
說明書
For two search spaces configured to repeatedly transmit the same PDCCH (embodiment 1 above) or to dividedly transmit (embodiment 2 above), a DCI format to be blind decoded in each search space may be configured independently. For example, DCI format 1-0/1-1 may be configured in search space 0, and DCI format 1-2/1-1 may be configured in search space 1. In this case, multiple TRPs can be repeatedly transmitted or dividedly transmitted only for the common DCI format (e.g., DCI format 1-1 in the above example) of the two search spaces, and only one TRP can be transmitted for other DCI formats.
In order for two TRPs to transmit the same PDCCH, a QCL RS of a PDCCH DMRS transmitted by each TRP should be different, and as a result, a TCI state to be used for PDCCH decoding should be different. In the conventional method, one TCI state is defined per CORESET. However, for MTRP PDCCH transmission, two CORESETs corresponding to TCI states of two TRPs may be configured, or one CORESET may be configured and two TCI states may be configured in the CORESET.
