Subband channel state information reporting
AssigneeApple Inc.
InventorsGhaith N. Hattab, Louay Jalloul, Ismael Gutierrez Gonzalez
Life of this patent
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Abstract
The present application relates to devices and components including apparatus, systems, and methods to perform CSI-reporting. In an example, a BWP includes “M” subbands and is configured to the UE. The UE can process “Kc” CSI-RS samples to generate “M” subband CSI reports, where “Kc>M.” The UE determines what number of CSI-RS samples to use per subband based on the channel information of the BWP, where this number can vary between the subbands.
Claims20
A user equipment (UE) comprising:
- one or more processors;
- and
- one or more memories storing instructions that, upon execution by the one or more processors, configure the UE to:
- determine that Kc channel state information reference signal (CSI-RS) samples are to be used in channel state information (CSI) reporting for M subbands, wherein Kc and M are positive integers, M<Kc, and the M subbands belong to a bandwidth part (BWP);
- determine that a first number of CSI-RS samples of the Kc CSI-RS samples is to be used for a first subband of the M subbands, wherein the first number of CSI-RS samples is different from a second number of CSI-RS samples determined for a second subband of the M subbands, wherein the first number of CSI-RS samples is determined based on channel information associated with the BWP;
- generate a CSI report for the first subband by at least using CSI-RS samples associated with the first subband, wherein a total number of the used CSI-RS samples for the CSI report is equal to the first number of CSI-RS samples;
- and
- send the CSI report to a network.
One or more non-transitory computer-readable media storing instructions that, upon execution by a user equipment (UE), cause the UE to perform operations comprising:
- determining that Kc channel state information reference signal (CSI-RS) samples are to be used in channel state information (CSI) reporting for M subbands, wherein Kc and M are positive integers, M<Kc, and the M subbands belong to a bandwidth part (BWP);
- determining that a first number of CSI-RS samples of the Kc CSI-RS samples is to be used for a first subband of the M subbands, wherein the first number of CSI-RS samples is different from a second number of CSI-RS samples determined for a second subband of the M subbands, wherein the first number of CSI-RS samples is determined based on channel information associated with the BWP;
- generating a CSI report for the first subband by at least using CSI-RS samples associated with the first subband, wherein a total number of the used CSI-RS samples for the CSI report is equal to the first number of CSI-RS samples;
- and
- sending the CSI report to a network.
A method implemented by a user equipment (UE), the method comprising:
- determining that Kc channel state information reference signal (CSI-RS) samples are to be used in channel state information (CSI) reporting for M subbands, wherein Kc and M are positive integers, M<Kc, and the M subbands belong to a bandwidth part (BWP);
- determining that a first number of CSI-RS samples of the Kc CSI-RS samples is to be used for a first subband of the M subbands, wherein the first number of CSI-RS samples is different from a second number of CSI-RS samples determined for a second subband of the M subbands, wherein the first number of CSI-RS samples is determined based on channel information associated with the BWP;
- generating a CSI report for the first subband by at least using CSI-RS samples associated with the first subband, wherein a total number of the used CSI-RS samples for the CSI report is equal to the first number of CSI-RS samples;
- and
- sending the CSI report to a network.
Dependencies are inferred from the claim text.