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

專利號(hào)
US11159300B2
公開日期
2021-10-26
申請(qǐng)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

A BS may configure one or more BWPs for a terminal. The BS may configure at least one basic BWP (or identically, a default BWP or a primary BWP) for the terminal, and the basic BWP may be used for the purpose of a fallback operation of the terminal. As an example, BWP #1 and BWP #2 may be configured for the terminal by the BS, and BWP #1 may be configured as a basic BWP. Under the instruction of the BS, the terminal may activate BWP #2, and may perform transmission/reception in BWP #2. If additional DCI is not received after elapse of a particular predefined time, the terminal automatically may activate BWP #1, which is a basic BWP, and may perform transmission/reception in BWP #1.

The BS may configure CORESETs according to the respective BWPs for the terminal. Further, the BS may configure a common search space or a UE-specific search space for the configured CORESET.

The BS may configure at least one UE-specific search space so as to exist in each BWP configured for the terminal. That is, when one or more CORESETs are configured in each BWP, the BS may configure at least one CORESET so as to necessarily include a UE-specific search space. That is, the terminal may monitor at least one UE-specific search space in all BWPs.

The BS may configure each BWP configured for the terminal so as to include at least one common search space, or may configure only a particular BWP so as to include a common search space. This configuration may vary depending on a common search space type.

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