Method and apparatus for beam association between downlink/uplink
摘要
說明書
The DCI+MAC CE indication method is a method of indicating an association with a given RS through DCI and indicating an association with a different RS through an MAC CE. In a related embodiment, the UL SRS→DL DMRS of a PDCCH may be indicated through an MAC CE, and the UL SRS→DL DMRS of a PDSCH may be indicated through DCI.
2. DL BPL Indication.
The DL BPL indication is indication for providing notification of a DL BPL to be used for DL transmission. In this case, if an UL-based DL beam association has been activated, some of BPLs established through UL BM is indicated. If the UL-based DL beam association has not been activated, some of BPLs established through DL BM is indicated. Accordingly, the DL BPL indication may be indicated regardless of whether an UL-based DL beam association has been activated. When the DL BPL indication is performed, if the number of activated BPLs is plural, there is a need for indication of a bitmap form. In the semi-static method, the DL BPL indication may be performed through higher layer signaling. Furthermore, the DL BPL indication may be dynamically performed using one of the DCI, MAC CE and DCI+MAC CE methods. The following proposes some methods for the DL BPL indication.
