Samsung Electronics Co., Ltd.

Hee Don Gha

Eko Nugroho Onggosanusi

Boon Loong Ng

Young-Han Nam

Young Bum Kim

Seung Hoon Choi

Tae Hyoung Kim

Tae Han Bae

The disclosure provides a method of transmitting downlink (DL) control information, the method including: transmitting configuration information about a CORESET in which DL control information is to be transmitted; mapping the DL control information to a plurality of resource elements (REs) in the CORESET determined based on the configuration information; and transmitting the DL control information via the plurality of REs.

Method and apparatus for transmitting and receiving control information in wireless communication system

User equipment (UE) is configured to receive two types of channel state information (CSI) reference signals (CSI-RS), the first containing more antenna ports and measured less often than the second. A first CSI report is based on first type CSI-RS and a second CSI report on the second type CSI-RS. The second type CSI-RS is at least partially precoded in response to the first CSI report, is precoded for the specific UE, and is transmitted more often than the first type CSI-RS, while the first type CSI-RS is not precoded. The first CSI report contains a first precoding matrix indicator (PMI) parameter and the second CSI report contains only a second PMI parameter of a two-PMI codebook, where the first PMI parameter is a long-term and wideband PMI. The first PMI is derived from measuring the first type CSI-RS in a plurality of subframes and resource blocks.

Downlink signaling for partially precoded CSI-RS and CSI feedback

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Gyeonggi-do, South Korea

Hee Don Gha