Method and apparatus for transmitting and receiving downlink control signal in wireless communication system
摘要
說明書
When the overlapping region 703 exists, a method for transmitting a PDCCH may comply with, for example, the following methods.
In describing the following methods, a CORESET configured as DMRS configuration #1 will be referred to as a “first CORESET”, and a CORESET configured as DMRS configuration #2 will be referred to as a “second CORESET”. Further, a part, at which the first CORESET and the second CORESET overlap each other in a particular resource in a particular time, will be referred to as an “overlapping region”. As described above, the overlapping region may exist in a particular time or an entire time according to a monitoring periodicity (or a transmission periodicity of a DMRS complying with DMRS configuration #1) of each of the first CORESET and the second CORESET.
[Method 1]
When a BS transmits a PDCCH in the overlapping region, the BS may transmit a DMRS complying with DMRS configuration #1 in the overlapping region. That is, DMRSs are transmitted on all REGs existing in the overlapping region, and the same precoding as precoding used for the first CORESET may be applied to all the DMRSs.
When a terminal blind-decodes a PDCCH in the overlapping region, the terminal may perform the blind-decoding, assuming that a DMRS complying with DMRS configuration #1 is transmitted in the overlapping region.
