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Title:
BEAM INDICATION METHOD AND COMMUNICATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/156174
Kind Code:
A1
Abstract:
The present application provides a beam indication method, comprising: a network device sends configuration information to a terminal device, the configuration information indicating using a receiving beam of an aperiodic channel state information-reference signal (CSI-RS) as a receiving beam of a data channel; the network device transmits first downlink control information (DCI) to the terminal device, the first DCI being used for indicating the receiving beam of the aperiodic CSI-RS; and the network device transmits second DCI to the terminal device, the second DCI being used for indicating the receiving beam of the aperiodic CSI-RS; wherein a time interval between the first DCI and the second DCI is not less than an aperiodic CSI-RS beam switching timing. Because a time interval between two transmissions of the DCI by the network device is greater than or equal to beam switching capability of a capability limited terminal, it is ensured that the terminal device successfully switches the receiving beam, and subsequent communications are guaranteed.

Inventors:
GUAN PENG (CN)
FAN BO (CN)
ZHANG XI (CN)
Application Number:
CN2020/072221
Publication Date:
August 06, 2020
Filing Date:
January 15, 2020
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L5/00
Foreign References:
CN109121201A2019-01-01
CN105471559A2016-04-06
US20180278310A12018-09-27
Other References:
ERICSSON: "On DL beam indication", 3GPP TSG-RAN WG1 #88 R1-1702676, 17 February 2017 (2017-02-17), XP051209823, DOI: 20200324151824Y
QUALCOMM INC.: "Maintenance for CSI Measurement", 3GPP TSG RAN WG1 MEETING #94 R1-1809422, 24 August 2018 (2018-08-24), XP051516785, DOI: 20200324151041Y
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