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Method and apparatus for transmitting and receiving downlink control signal in wireless communication system

專利號
US11159300B2
公開日期
2021-10-26
申請人
Samsung Electronics Co., Ltd.（KR Suwon-si）
發(fā)明人
Taehyoung Kim; Youngbum Kim; Jinyoung Oh; Seunghoon Choi; Heedon Gha
IPC分類
H04L5/10; H04L5/00; H04L1/00; H04W72/04
技術(shù)領(lǐng)域
coreset,dmrs,search,bs,terminal,pdcch,dci,space,in,may
地域： Suwon-si

摘要

The present disclosure relates to a communication technique for fusing a 5G communication system to support a higher data rate than a 4G system with IoT technology; and a system thereof. In embodiments according to the disclosure provide an improved method for transmitting and receiving a control channel. A method performed by a base station according to disclosed aspects includes: transmitting first control area setting information containing first demodulation reference signal (DMRS) setting information for a first control area, transmitting second control area setting information containing second DMRS setting information for a second control area, identifying a third control area where the first control area overlaps with the second control area, and transmitting a DMRS on the basis of the first DMRS configuration information in the first control area including the third control area. A corresponding method performed by a terminal, a base station and a terminal are also described.

說明書

The BS may transmit, to the terminal, particular DCI for pre-emption indication, and a corresponding DCI format may be scrambled with an INT-RNTI. The BS may transmit the DCI format, scrambled with the INT-RNTI, to the terminal in a common search space. The common search space, in which the DCI format scrambled with the INT-RNTI is transmitted, will be referred to as “common search space type 4”.

The BS may transmit, to the terminal, DCI including a slot format indicator (SFI), and a corresponding DCI format may be scrambled with a particular RNTI, or may have a size distinguished from that of another DCI format. The BS may transmit an SFI to the terminal in a common search space. The common search space, in which the SFI is transmitted, will be referred to as “common search space type 5”.

Hereinafter, various methods for transmitting or receiving the above-described common search space and common DCI format will be described.

[Method 1]

For a terminal before an RRC connection, a BS may configure a CORESET for monitoring of common search space type 1 for the corresponding terminal via a MIB.

For the terminal before an RRC connection, the BS may configure a CORESET for monitoring of common search space type 2 for the terminal via RMSI, more specifically, random access configuration.

For the terminal before an RRC connection, the BS may configure a CORESET for monitoring of common search space type 3 for the terminal via RMSI, more specifically, paging configuration.

權(quán)利要求

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