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A method and device for indicating control channel

A control channel and indication technology, applied in the field of communication, can solve problems such as flexibility limitation of downlink control resource scheduling

Active Publication Date: 2019-11-19
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The scheme of notifying the CORESET and TCI state to the terminal device stipulated in the current agreement, in the scenario where multiple TCI states need to be delivered to the terminal device, will lead to a relatively large limitation on the flexibility of downlink control resource scheduling

Method used

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  • A method and device for indicating control channel
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  • A method and device for indicating control channel

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Embodiment Construction

[0061] The technical solution in this application will be described below with reference to the accompanying drawings.

[0062] In order to facilitate the understanding of the solutions provided by the embodiments of the present application, several concepts are firstly introduced below.

[0063] (1) Control Resource Set (CORESET) and Search Space (SS).

[0064] CORESET can indicate the frequency domain resource position of the control channel and the symbol length occupied in the time domain. Wherein, the symbol may be an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol.

[0065] The search space may indicate time-domain location information of the control channel.

[0066] Exemplarily, as figure 1 As shown, CORESET defines the frequency domain resource position of the resource block and the symbol length occupied by the resource block in the time domain. The search space defines the position of the resource block in the...

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Abstract

The invention provides a method and a device for indicating a control channel. The method comprises the following steps: network equipment sends information used for indicating N control resource sets(CORESETs) and M transmission configuration indication states (TCI state) respectively corresponding to each CORESET in the N CORESETs to terminal equipment, the M TCI states are in one-to-one association with the M search space groups; each search space group comprises one or more search spaces; wherein the CORESET and the search space are used for the terminal device to determine transmission resources of a control channel, the TCI state is used for the terminal device to determine quasi co-location (QCL) information of the control channel, N is an integer greater than or equal to 1, and Mis an integer greater than or equal to 2. One CORESET is configured to correspond to a plurality of TCI states, so that the flexibility of resource scheduling can be effectively improved.

Description

technical field [0001] The present application relates to the communication field, and specifically relates to a method and device for indicating a control channel. Background technique [0002] In a fifth generation communication (new radio, NR) system, downlink control information is carried on a downlink control channel (physical downlink control channel, PDCCH), and a base station will allocate certain time-frequency resources for transmitting the PDCCH. In NR, the PDCCH can be configured to be associated with one or more control resource sets (control resource set, CORESET) and one or more search spaces (search space, SS). CORESET is used to define the frequency domain resource position of PDCCH and the occupied time domain OFDM symbol length; SS is used to define the time domain position information of PDCCH. Each terminal device can be configured with up to 3 CORESETs and 10 SSs on the same frequency band bandwidth part (BWP). Through each configured pair of CORESET...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W72/12H04B7/024
CPCH04L5/0053H04L5/0035H04L5/001H04W24/02
Inventor 施弘哲葛士斌毕晓艳
Owner HUAWEI TECH CO LTD
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