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Patent Searching and Data


Title:
SYSTEM AND METHOD FOR REPORTING CHANNEL STATE AND DOPPLER FREQUENCY INFORMATION
Document Type and Number:
WIPO Patent Application WO/2021/008450
Kind Code:
A1
Abstract:
A base station may configure transmission to user equipment (UE) based on channel state information (CSI), which may be transmitted to the base station by the UE. However, channel fading may cause the CSI to become stale before the base station is able to configure transmission. Such channel fading may be addressed using Doppler frequency information. To that end, a UE may receive a first set of CSI-RSs from the base station. The UE may determine a Doppler frequency based on a carrier on which communication with the base station is configured. The UE may transmit at least one CSI report to the base station based on the first set of CSI-RSs and, further, may transmit an indication of the Doppler frequency to the base station.

Inventors:
HAO CHENXI (US)
ZHANG YU (US)
WU LIANGMING (US)
LI QIAOYU (US)
WEI CHAO (US)
XU HAO (US)
CHEN WANSHI (US)
Application Number:
PCT/CN2020/101290
Publication Date:
January 21, 2021
Filing Date:
July 10, 2020
Export Citation:
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Assignee:
QUALCOMM INC (US)
HAO CHENXI (CN)
ZHANG YU (CN)
WU LIANGMING (CN)
LI QIAOYU (CN)
WEI CHAO (CN)
XU HAO (CN)
CHEN WANSHI (US)
International Classes:
H04B17/309; H04W72/04
Domestic Patent References:
WO2018033148A12018-02-22
WO2018033148A12018-02-22
Foreign References:
US20130003807A12013-01-03
US20130003807A12013-01-03
CN109560907A2019-04-02
Other References:
MEDIATEK INC.: "Doppler compensation in initial access procedure in NR-NTN", 3GPP TSG RAN WG1 MEETING #96BIS R1-1904644, 12 April 2019 (2019-04-12), XP051699853, DOI: 20200917131039A
INTEL CORPORATION: "Summary of Rel-15 CRs for NR Mobility", 3GPP TSG RAN WG1 MEETING #96BIS R1- 1905688, 12 April 2019 (2019-04-12), XP051707747, DOI: 20200917131113A
HUAWEI ET AL.: "Sidelink reference signal design for NR V2X", 3GPP TSG RAN WG1 MEETING #97 R1-1906009, 17 May 2019 (2019-05-17), XP051727466, DOI: 20200917131200A
Attorney, Agent or Firm:
NTD PATENT & TRADEMARK AGENCY LTD. (CN)
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