Method and device for transmitting/receiving downlink control information in wireless communication system
摘要
說明書
Referring to
This method may be configured in a manner similar to that of embodiment 1-1 described above, and one PDCCH candidate may be transmitted/received through different SS sets existing within the same window. For example, a UE may not consider a PDCCH candidate of aggregation level=A1 of SS set 1 and a PDCCH candidate of aggregation level=A2 of SS set 2 within the same window as different PDCCH candidates, and attempt decoding by assuming one PDCCH candidate of aggregation level=A1+A2. Through this method, various aggregation levels other than the existing aggregation level can be supported.
However, since aggregation levels or PDCCH candidates vary in each SS set, a method of generating one candidate from candidates of two SS sets without any restrictions may increase a complexity of UE implementation. To solve this problem, a restriction may be applied to the aggregation of candidates of two SS sets that generate one PDCCH candidate. For example, candidates of two SS sets generating one PDCCH candidate may be restricted to the same aggregation level and/or to the same PDCCH candidate number (or index). Alternatively, for example, one PDCCH candidate may be generated by configuring a reference set (e.g., set 1) among two SS sets, and aggregating a PDCCH candidate of set 1 with a PDCCH candidate of set 2 configured below the aggregation level of the PDCCH candidate of set 1.
