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US 11,777,575 B2Granted
CSI reporting method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsJiafeng Shao, Yongxia Lyu
Life of this patent
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Abstract
The present disclosure relates to channel state information (CSI) reporting methods and apparatus. When receiving first indication information used to trigger reporting of CSI, a terminal device determines a first time interval from a plurality of candidate first time intervals. The first time interval is used to determine whether the first indication information is valid. The terminal device reports the CSI based on the first time interval.
Claims18
A channel state information (CSI) reporting method, comprising:
- receiving downlink control information (DCI) on a physical downlink control channel (PDCCH), wherein the DCI comprises first indication information, and wherein the first indication information is used to trigger a terminal device to report CSI on a first uplink channel;
- and
- determining, based on at least one of the DCI or higher layer signaling, a first time interval from a plurality of candidate first time intervals corresponding to a first subcarrier spacing, wherein the first time interval is used to determine whether the first indication information is valid, wherein the first subcarrier spacing is one of a 15 kilohertz (kHz) subcarrier spacing, a 30 kHz subcarrier spacing, a 60 kHz subcarrier spacing, and a 120 kHz subcarrier spacing, and wherein a correspondence between the first subcarrier spacing and the first time interval meets at least one of the following conditions:
- a first time interval corresponding to the 15 kHz subcarrier spacing is less than or equal to eight symbols, a first time interval corresponding to the 30 kHz subcarrier spacing is less than or equal to 12 symbols, a first time interval corresponding to the 60 kHz subcarrier spacing is less than or equal to 24 symbols, and a first time interval corresponding to the 120 kHz subcarrier spacing is less than or equal to 42 symbols.
1 more element
An apparatus comprising:
- one or more processors;
- and
- a non-transitory computer readable medium storing programming instructions for execution by the one or more processors, the programming instructions instructing the apparatus to perform operations comprising:
- sending downlink control information (DCI) to a terminal device on a physical downlink control channel (PDCCH), wherein the DCI comprises first indication information, wherein the first indication information is used to trigger the terminal device to report channel state information (CSI) on a first uplink channel, wherein at least one of the DCI or higher layer signaling is used to determine a first time interval from a plurality of candidate first time intervals corresponding to a first subcarrier spacing, wherein the first time interval is used to determine whether the first indication information is valid, wherein the first subcarrier spacing is one of a 15 kilohertz (kHz) subcarrier spacing, a 30 kHz subcarrier spacing, a 60 kHz subcarrier spacing, and a 120 kHz subcarrier spacing, and wherein a correspondence between the first subcarrier spacing and the first time interval meets at least one of the following conditions:
- a first time interval corresponding to the 15 kHz subcarrier spacing is less than or equal to eight symbols, a first time interval corresponding to the 30 kHz subcarrier spacing is less than or equal to 12 symbols, a first time interval corresponding to the 60 kHz subcarrier spacing is less than or equal to 24 symbols, and a first time interval corresponding to the 120 kHz subcarrier spacing is less than or equal to 42 symbols;
- and
- receiving the CSI from the terminal device on the first uplink channel.
4 more elements
An apparatus comprising:
- one or more processors;
- and
- a non-transitory computer readable medium storing programming instructions for execution by the one or more processors, the programming instructions instructing the apparatus to perform operations comprising:
- receiving downlink control information (DCI) on a physical downlink control channel (PDCCH), wherein the DCI comprises first indication information, and wherein the first indication information is used to trigger a terminal device to report CSI on a first uplink channel;
- and
- determining, based on at least one of the DC or higher layer signaling, a first time interval from a plurality of candidate first time intervals corresponding to a first subcarrier spacing, wherein the first time interval is used to determine whether the first indication information is valid, wherein the first subcarrier spacing is one of a 15 kilohertz (kHz) subcarrier spacing, a 30 kHz subcarrier spacing, a 60 kHz subcarrier spacing, and a 120 kHz subcarrier spacing, and wherein a correspondence between the first subcarrier spacing and the first time interval meets at least one of the following conditions:
- a first time interval corresponding to the 15 kHz subcarrier spacing is less than or equal to eight symbols, a first time interval corresponding to the 30 kHz subcarrier spacing is less than or equal to 12 symbols, a first time interval corresponding to the 60 kHz subcarrier spacing is less than or equal to 24 symbols, and a first time interval corresponding to the 120 kHz subcarrier spacing is less than or equal to 42 symbols.
4 more elements
Dependencies are inferred from the claim text.